Small Family Research Articles

Split Cycle: a new Condorcet-consistent voting method independent of clones and immune to spoilers

We propose a Condorcet-consistent voting method that we call Split Cycle. Split Cycle belongs to the small family of known voting methods satisfying the anti-vote-splitting criterion of independence of clones. In this family, only Split Cycle satisfies a new criterion we call immunity to spoilers, which concerns adding candidates to elections, as well as the known criteria of positive involvement and negative involvement, which concern adding voters to elections. Thus, in contrast to other clone-independent methods, Split Cycle mitigates both “spoiler effects” and “strong no show paradoxes.”

Regulation of rat HspB5/alphaB-Crystallin by microRNAs miR-101a-3p, miR-140-5p, miR-330-5p, and miR-376b-3p

HspB5/alphaB-crystallin is an ubiquitously expressed member of the small heat shock protein family which help cells to survive cellular stress conditions and are also implicated in neurodegenerative diseases. MicroRNAs are small non-coding RNAs fine-tuning protein expression mainly by inhibiting the translation of target genes. Our earlier finding of an increase in HspB5/alphaB-crystallin protein amount after heat shock in rat hippocampal neurons without a concomitant increase of mRNA prompted us to look for microRNAs as a posttranscriptional regulatory mechanism. Microarray miRNA expression data of rat hippocampal neurons under control and stress conditions in combination with literature search, miRNA binding site prediction and conservation of target sites yielded nine candidate microRNAs. Of these candidates, five (miR-101a-3p, miR-129-2-3p, miR-330-5p, miR-376b-3p, and miR-491-5p) were able to convey a downregulation by binding to the HspB5 3′- or 5′-UTR in a luciferase reporter gene assay while one (miR-140-5p) led to an upregulation. Overexpression of these six microRNAs in C6 glioma cells showed that three of them (miR-101a-3p, miR-140-5p, and miR-376b-3p) regulated endogenous HspB5 protein amount significantly in the same direction as in the reporter gene assay. In addition, overexpression of miR-330-5p and miR-491-5p in C6 cells resulted in regulation of HspB5 in the opposite direction as expected from the luciferase assay. Analysis of miRNA expression in rat hippocampal neurons after cellular stress by qPCR showed that miR-491-5p was not expressed in these cells. In total, we therefore identified four microRNAs, namely miR-101a-3p, miR-140-5p, miR-330-5p, and miR-376b-3p, which can regulate rat HspB5 directly or indirectly.

Business advisory services and innovation during crises: Evidence from small businesses in Chile

State-sponsored business advisory services face pressure to demonstrate value-added effects among their assisted enterprises. We employ a unique survey to measure the effectiveness of a business advisory program in promoting innovation in small businesses in Chile during the COVID-19 pandemic. We also seek to determine the role of innovation in mitigating the negative effects of the pandemic on enterprises’ closure, sales, and job creation. We observe a large likelihood of innovation and a lower likelihood of closure by assisted enterprises. We also find a reduction in sales and employment during the pandemic. However, these negative effects are mitigated in enterprises that implemented innovations such as online sales, delivery, commercialization through internet channels, and the creation of new products and/or services during the pandemic. The effects of the pandemic and induced innovation are more pronounced in family businesses than in non-family businesses. This finding suggests small family firms are both more vulnerable to crises but benefit more from crises-induced innovation.

Prevalence and factors associated with early childbearing in sub-saharan Africa: evidence from demographic and health surveys of 31 countries

BackgroundEarly childbearing remains a public health concern in sub-Saharan Africa (SSA) because it has substantial implications for women’s and children’s health and population control. However, little is known about recent changes in early childbearing in the region following the implementation of the Family Planning 2020 initiative (FP2020) national-level interventions. Thus, this study examined factors associated with early childbearing among women in SSA.MethodsThe study used data from the most recent Demographic and Health Surveys conducted in 31 countries in sub-Saharan Africa between 2010 and 2021. The analysis included a pooled sample of 54,671 parous young women aged 20–24 years. A multivariable binary logistic regression model was used to examine the association between early childbearing and individual and household-level factors. All analyses were weighted to account for complex survey design.ResultsThe study shows that the mean prevalence of early childbearing was high in SSA at 39% (95% CI: 35, 43). Chad had the highest prevalence of early childbearing, 62% (95% CI: 60, 64) while Rwanda had the lowest prevalence of 13% (95% CI: 11, 15). Completing secondary school (aOR = 0.57; 95% CI: 0.52, 0.62) or attaining tertiary level education (aOR = 0.32; 95% CI: 0.22, 0.45), first sexual debut in the age range 15–24 years (aOR = 0.15; 95% CI: 0.14, 0.16) and desire for a small family size (aOR = 0.63; 95% CI: 0.58, 0.69) were associated with reduced odds of early childbearing among young women in SSA.ConclusionThe study has established that the prevalence of early childbearing is high in SSA. Level of education, age at first sexual debut, household size, and desired family size are associated with early childbearing in SSA. Governments of SSA countries should enhance sexual and reproductive health interventions to change reproductive behaviour, particularly in adolescents and young women.

Do arrestin oligomers have specific functions?

Arrestins are a small family of versatile regulators of cell signaling. Arrestins regulate signaling and trafficking of G protein-coupled receptors, regulate and direct to particular subcellular compartments numerous protein kinases, ubiquitin ligases, etc. Three out of four arrestin subtypes expressed in vertebrates self-associate, each forming oligomers of a distinct size and shape. While the structures of the solution oligomers of arrestin-1, -2, and -3 have been elucidated, no function specific for the oligomeric form of either of these three subtypes has been identified thus far. Considering how multi-functional average-sized (~45 kDa) arrestin proteins were found to be, it appears likely that certain functions are predominantly or exclusively fulfilled by monomeric and oligomeric forms of each subtype.

Cage-like Cu5Cs4-Phenylsilsesquioxanes: Synthesis, Supramolecular Structures, and Catalytic Activity.

A small family of nonanuclear Cu5Cs4-based phenylsilsesquioxanes 1-2 were prepared by a convenient self-assembly approach and characterized by X-ray diffraction studies. The compounds 1 and 2 show some unprecedented structural features such as the presence of a [Ph14Si14O28]14- silsesquioxane ligand and a CuII5CsI4 nuclearity in which the metal cations occupy unusual positions within the cluster. Copper ions are "wrapped" into a silsesquioxane matrix, while cesium ions are located in external positions. This resulted in cesium-involved aggregation of coordination polymer structures. Both compounds 1 and 2 realize specific metallocene (cesium-phenyl) linkage between neighboring cages. Compound 2 is evaluated as a catalyst in the Baeyer-Villiger (B-V) oxidation of cyclohexanone and tandem cyclohexane oxidation/B-V oxidation of cyclohexanone with m-chloroperoxybenzoic acid (mCPBA) as an oxidant, in an aqueous acetonitrile medium, and HNO3 as the promoter. A quantitative yield of ε-caprolactone was achieved under conventional heating at 50 °C for 4 h or MW irradiation for 30 min (for cyclohexanone as substrate); 17 and 19% yields of lactone upon MW irradiation at 80 °C for 30 min and heating at 50 °C for 4 h, respectively (for cyclohexane as a substrate), were achieved. Complex 2 was evaluated as a catalyst for the oxidation of alkanes to alkyl hydroperoxides and alcohols to ketones with peroxides at 60 °C in acetonitrile. The maximum yield of cyclohexane oxidation products was 30%. Complex 2 exhibits high activity in the oxidation of alcohols.

Two new species of Ismarus Haliday (Hymenoptera, Ismaridae) from Yunnan, China.

The genus Ismarus Haliday are rarely collected parasitoids in the small family Ismaridae. In this study, two new species are described from China's Yunnan Province: Ismarusrobustus Chen & Yan, sp. nov. and Ismarusunisulcus Chen & Yan, sp. nov. An updated key to the Chinese species of the genus is provided.

Genome-Wide Identification and Expression Analysis of the Sucrose Synthase Gene Family in Sweet Potato and Its Two Diploid Relatives.

Sucrose synthases (SUS; EC 2.4.1.13) encoded by a small multigene family are the central system of sucrose metabolism and have important implications for carbon allocation and energy conservation in nonphotosynthetic cells of plants. Though the SUS family genes (SUSs) have been identified in several plants, they have not been explored in sweet potato. In this research, nine, seven and seven SUSs were identified in the cultivated sweet potato (Ipomoea batatas, 2n = 6x = 90) as well as its two diploid wild relatives I. trifida (2n = 2x = 30) and I. triloba (2n = 2x = 30), respectively, and divided into three subgroups according to their phylogenetic relationships. Their protein physicochemical properties, chromosomal localization, phylogenetic relationship, gene structure, promoter cis-elements, protein interaction network and expression patterns were systematically analyzed. The results indicated that the SUS gene family underwent segmental and tandem duplications during its evolution. The SUSs were highly expressed in sink organs. The IbSUSs especially IbSUS2, IbSUS5 and IbSUS7 might play vital roles in storage root development and starch biosynthesis. The SUSs could also respond to drought and salt stress responses and take part in hormone crosstalk. This work provides new insights for further understanding the functions of SUSs and candidate genes for improving yield, starch content, and abiotic stress tolerance in sweet potatoes.

The Impact of Infidelity on Children’s Psychological Development

Children's psychological development is development related to conditions that can affect children's daily lives both in the circle of friends and the surrounding community. There are so many factors that can affect the psychological development of children, including the family environment which will be the closest factor in the psychological development of children. Because basically the family is the first place for children to socialize after being born. The family is the first place for children regarding the social environment. If a child is in a harmonious and happy family, he will experience good psychological development, he will grow into a child who is physically, mentally and behaviorally healthy. However, it will be inversely proportional to children who grow and develop in an inharmonious family environment, such as the occurrence of an affair from one of their parents or both parents having an affair. These problems will have a tremendous impact, both on the perpetrators of the affair themselves, their partners and their children. Children will become victims of the infidelity committed by their parents. The impacts that will be obtained by the child include: there will be a child's distrust of a marriage relationship or distrust of the opposite sex, will cause anger and hatred in the child towards parents who have an affair, will cause indifference to their environment, children will close himself from the environment, the child will experience stress and the worst the child will experience depression. From the impact that the child gets, it will affect the development of the child in the future, both physically, psychologically and mentally. Efforts that can be made to maintain household harmony and maintain children's psychological development can be done by parents by building and maintaining small family harmony, by doing positive things together, spending weekends traveling together, being open to one another. So that the household is harmonious and the development and growth experienced by children is good and healthy physically, mentally and in behavior for the future.

“Localness” in donburi rice bowls in a remote rural areas: The case of Noto Peninsula, Japan

This paper takes the example of “notobowl (Notodon)”, which was created as a new “local dish” in the Oku-Noto region, a peripheral area at the tip of the Noto Peninsula, Japan, to showcase how local chefs selected local ingredients to serve on bowls of rice to promote the local characteristics of the Noto (or Oku-Noto) region. This research focuses on small-scale family businesses, in the context of globalization and the global market economy. Each restaurant used products that it had already been selling locally by recommodifying them with a Notodon theme, so that they could be sold in a larger market area. I conducted semi-structured interviews with restaurant managers and other people who were part of the production process. The interviews focused on how each restaurant came up with its original dish, which considered the restaurant’s location, its existing operation, and the influence of outside actors. The interview questions also inquired about the effects of commodifying localness on small family businesses in peripheral areas. The interviews indicated that local small-scale businesses led the promotion of Notodon. The restaurants followed their own procedures when they served their local dishes, they encouraged tourists to consume their Notodon.

ArfA and SarA small GTPases involved in growth, patulin biosynthesis and virulence of Penicillium expansum

Although the Sar/Arf GTPase belonging to a small family of GTPases contributes to growth of fungi, its function in postharvest fungi has not been characterized. Here, ArfA and SarA gene deletion mutants were generated in Penicillium expansum. We found that ΔArfA and ΔSarA exhibited attenuated colony growth and rough colony morphology, as well as insufficient spore development. ΔArfA also increased hyphal branches. Stress experiments showed that knocking out the ArfA or SarA genes affected cell wall integrity of the P. expansum strain. In addition, ΔArfA and ΔSarA significantly downregulated the expression of genes controlling spore development (wetA, abaA and brlA) and MAPK pathway regulators (Fus3, Kss1, Hog1 and Mpk1). Absence of ArfA and SarA reduced patulin production, and the related gene expression was significantly limited. ΔArfA showed attenuated virulence in infected fruit and downregulated PG and PL gene expression. However, ΔSarA had no significant effect on fungal virulence. Taken together, both ArfA and SarA contribute to the growth, development and patulin biosynthesis in P. expansum. ArfA is also involved in the virulence of P. expansum in fruit.

Stability of the interorbital-hopping mechanism for ferromagnetism in multi-orbital Hubbard models

The emergence of insulating ferromagnetic phase in iron oxychalcogenide chain system has been recently argued to be originated by interorbital hopping mechanism. However, the practical conditions for the stability of such mechanism still prevents the observation of ferromagnetic in many materials. Here, we study the stability range of such ferromagnetic phase under modifications in the crystal fields and electronic correlation strength, constructing a theoretical phase diagram. We find a rich emergence of phases, including a ferromagnetic Mott insulator, a ferromagnetic orbital-selective Mott phase, together with antiferromagnetic and ferromagnetic metallic states. We characterize the stability of the ferromagnetic regime in both the Mott insulator and the ferromagnetic orbital-selective Mott phase forms. We identify a large stability range in the phase diagram at both intermediate and strong electronic correlations, demonstrating the capability of the interorbital hopping mechanism in stabilizing ferromagnetic insulators. Our results may enable additional design strategies to expand the relatively small family of known ferromagnetic insulators.

DNA-Binding Activity of CAMTA3 Is Essential for Its Function: Identification of Critical Amino Acids for Its Transcriptional Activity.

Calmodulin-binding transcription activators (CAMTAs), a small family of highly conserved transcription factors, function in calcium-mediated signaling pathways. Of the six CAMTAs in Arabidopsis, CAMTA3 regulates diverse biotic and abiotic stress responses. A recent study has shown that CAMTA3 is a guardee of NLRs (Nucleotide-binding, Leucine-rich repeat Receptors) in modulating plant immunity, raising the possibility that CAMTA3 transcriptional activity is dispensable for its function. Here, we show that the DNA-binding activity of CAMTA3 is essential for its role in mediating plant immune responses. Analysis of the DNA-binding (CG-1) domain of CAMTAs in plants and animals showed strong conservation of several amino acids. We mutated six conserved amino acids in the CG-1 domain to investigate their role in CAMTA3 function. Electrophoretic mobility shift assays using these mutants with a promoter of its target gene identified critical amino acid residues necessary for DNA-binding activity. In addition, transient assays showed that these residues are essential for the CAMTA3 function in activating the Rapid Stress Response Element (RSRE)-driven reporter gene expression. In line with this, transgenic lines expressing the CG-1 mutants of CAMTA3 in the camta3 mutant failed to rescue the mutant phenotype and restore the expression of CAMTA3 downstream target genes. Collectively, our results provide biochemical and genetic evidence that the transcriptional activity of CAMTA3 is indispensable for its function.

Diarrhea Prevalence and Associated Factors among Children in Azezo Sub-City, Northwest Ethiopia: A Community-Based Cross-Sectional Study.

Globally, diarrheal disease continues to be a major cause of morbidity and mortality among children under 5 years of age, especially in low-income countries such as Ethiopia. However, there is still limited evidence in the study area quantifying the burden of diarrheal disease among children under 5 years. A community-based cross-sectional study was conducted in April 2019 to estimate the prevalence of childhood diarrhea and to identify its associated factors in Azezo sub-city, northwest Ethiopia. A simple random sampling technique was applied to recruit the eligible cluster villages with children under 5 years. Data were collected by interviewing mothers or guardians using structured questionnaires. The completed data were entered into EpiInfo version 7 and exported to SPSS version 20 for analysis. Binary logistic regression model was used to identify factors associated with diarrheal disease. Adjusted odds ratio (AOR) with 95% CI was used to measure the strength of association between the dependent and independent variable. The period prevalence of diarrheal disease among children under 5 years was 24.9% (95% CI: 20.4-29.7%). Age group between 1 and 12 months [AOR: 9.22, 95% CI: (2.93-29.04)] and 13 and 24 months [AOR: 4.44, 95% CI: (1.87-10.56)], as well as low monthly income (AOR: 3.68, 95% CI: (1.81-7.51)] and poor handwashing practice [AOR: 8.37, 95% CI: (3.12-22.52), were significantly associated with high risk of childhood diarrhea. In contrast, small family size [AOR: 0.32, 95% CI: (0.16-0.65)], and immediate consumption of prepared meals [AOR: 0.39, 95% CI: (0.19-0.81)] were significantly associated with low risk of childhood diarrhea. Diarrheal diseases were a common health problem among children under 5 years of age in Azezo sub-city. Therefore, an appropriate hygiene intervention program through health education is recommended with a focus on identified risk factors to reduce the burden of diarrheal diseases.

The Balancing Game: Probing the Lived Experiences of College Studying Mothers

Student mothers handle enormous responsibilities between taking care of their child and pursuing their studies. In this study, the researchers aim to explore the lived experiences of the student mothers in reference to their dual roles. The purpose of this study is to shed a light on the lives of these young women by providing a profound understanding of their struggles, motivations, and the different stories. The conversation partners were chosen via snowball and purposive sampling, which are guided by the following criteria: a.) a bonafide student enrolled in a state university in Negros Occidental in the 1st semester of Academic Year 2022-2023; b.) ages 20 - 24 years old; c.) a biological mother to young child/children ages 0 – 6 years old; d.) single parent or married; e.) has the custody of the child/living with her child or children, and f.) willing to participate in the study. Researchers employed an in-depth semi-structured interview as a tool in gathering the data. Each student mother underwent a one-on-one interview with the researchers in order to obtain substantial information of their lived experiences. The interviews were then transcribed for data analysis. After rigorous analysis, four core themes emerged from the data. Results revealed that most of the participants experienced personal struggles, societal acceptance as well as family and peer acceptance. Moreover, the student mothers shared that a strong support system is something that they wish for to have that could further help them in dealing with their day-to-day struggles. To cope with the different challenges that arise, the conversation partners rely greatly on their small family, their faith, as well as their immediate families and friends. The results of this study allowed the researchers to have a deeper insight of their situation and a glimpse of what is it like being a student mother.

Knowledge, Attitude, and Practices (KAP) on Antibiotic Use and Disposal Ways in Sidama Region, Ethiopia: A Community-Based Cross-Sectional Survey.

Antibiotic resistance has been among the top public health threats elsewhere. Scientific information on knowledge, attitudes, and practices (KAP) at the community level towards antibiotic use and disposal ways is a vital step for effective intervention. This study aimed at determining the levels of KAP and associated risk factors for antibiotics in and around Hawassa City, southern Ethiopia. A community-based cross-sectional study was conducted, and data were collected using a structured questionnaire. Descriptive statistics, chi-square test, and logistic regression were used to analyze and interpret the results. A total of 504 participants with a mean age of 35.32 ± 9.03 years were included in the study. Most of the participants were urban dwellers (59.5%); more than half (55.6%) of the participants were male; most of the participants (62.7%) were at least college graduates; about half were employed (52.4%); about 41.7% of the participants had a large family size (≥7) with a mean family size of 5.7 ± 2.7; the average family monthly income was ETB 7213.71 ± 3673, and over three-fourth (74.8%) of the study participants were married. In addition, about 83.13% of the study participants heard about antibiotics; almost all of them (99.8%) had ever used antibiotics at some point in their life (75% of which used antibiotics within 6 months), and all of them could name at least one common type of antibiotic. Moreover, most of the participants (86.5%) did not receive any training related to antibiotics, and 29.4% of them obtained antibiotics without a prescription. Most participants had poor knowledge (64%), negative attitudes (60.4%), and poor practices (55%) towards antibiotic use, resistance, and disposal methods. Significant and positive linear correlations between knowledge and attitude (r = 0.539, P ≤ 0.001), knowledge-practice (r = 0.532, P ≤ 0.001), and attitude-practice (r = 0.786, P < 0.001) were also observed. Most of the sociodemographic variables were significantly associated with the mean KAP scores of the study participants. Living in a rural area, having a large family size, and being female, married, illiterate, and farmer resulted in a very low level of knowledge. Similarly, living in a rural area, having a small family size, and being older and married resulted in a negative attitude. Furthermore, having a smaller family size, having a low family monthly income, and being married, illiterate, and self-employed resulted in poor practice. A very low level of KAP towards antibiotics among people living in and around Hawassa City calls for urgent and effective intervention strategies.

Identification of a novel PTH1R variant in a family with primary failure of eruption

BackgroundPrimary failure of tooth eruption (PFE) is a rare autosome genetic disorder that causes open bite. This work aimed to report a small family of PFE(OMIM: # 125,350) with a novel PTH1R variant. One of the patients has a rare clinical phenotype of the anterior tooth involved only.Case presentationThe proband was a 13-year-old young man with an incomplete eruption of the right upper anterior teeth, resulting in a significant open-bite. His left first molar partially erupted. Family history revealed that the proband’s 12-year-old brother and father also had teeth eruption disorders. Genetic testing found a novel PTH1R variant (NM_000316.3 c.1325-1336del), which has never been reported before. The diagnosis of PFE was based on clinical and radiographic characteristics and the result of genetic testing. Bioinformatic analysis predicted this variant would result in the truncation of the G protein-coupled receptor encoded by the PTH1R, affecting its structure and function.ConclusionA novel PTH1R variant identified through whole-exome sequencing further expands the mutation spectrum of PFE. Patients in this family have different phenotypes, which reflects the characteristics of variable phenotypic expression of PFE.

Functional trait diversity of Cyclanthaceae and its convergent evolution with Araceae in Neotropical forests.

The Cyclanthaceae comprise a relatively small family of about 230 species and 12 genera in the Pandanales that is widespread in wet Neotropical forests. The great majority of species can be divided into three growth forms (understory herbs, epiphytes, and root-climbing hemiepiphytes) that share functional traits with similar growth forms present in the Araceae, a member of the Alismatales and not closely related. Our objectives were first to characterize the diversity, functional growth forms, and ecological traits of Cyclanthaceae at the La Selva Biological Station. Specific functional leaf and canopy traits of terrestrial herbs and epiphytes are very similar and associated with ecological success in both families. We further examined the functional traits of root-climbing hemiepiphytes, a specialized growth form that links the two families but rare in other families and argue that their specialized functional traits allow them to be considered as a distinct functional growth form. A key trait in distinguishing hemiepiphytes which are rare outside of the Cyclanthaceae and Araceae is the severance of the main stem hydraulic connection to the soil early in plant development. We used field data to examine the possible evolutionary pathways of developmental and ecological transition from terrestrial to hemiepiphyte growth forms. The broader ecological success of hemiepiphytic Araceae compared to Cyclanthaceae is hypothesized to result from the presence of heteroblasty in developing stems and leaves which allows more efficient utilization of complex canopy light environments of wet tropical forests.

The tomato calcium-permeable channel 4.1 (SlOSCA4.1) is a susceptibility factor for pepino mosaic virus.

The hyperosmolality-gated calcium permeable channel 4.1 (OSCA4.1) belongs to an evolutionarily conserved small family of mechano-sensitive channels. OSCA members may represent key players in plant resistance to drought and to pathogen infection but are scarcely studied. After screening for resistance to pepino mosaic virus (PepMV) a collection of 1000 mutagenized tomato families, we identified a mutant showing no symptoms and reduced virus accumulation. Resistance was mapped to chromosome 2 between positions 46 309 531 to 47 044 163, where a missense mutation caused the putative truncation of the OSCA4.1 protein. A CRISPR/Cas9 slosca4.1 mutant was resistant to PepMV, but not to tobacco mosaic virus or potato virus X. Inoculation of mutant and wild type tomato protoplasts showed that resistance was expressed in single cells, suggesting a role for SlOSCA4.1 in early viral function(s); congruently, SlOSCA4.1 re-localized to structures reminiscent of viral replication complexes. We propose that SlOSCA4.1 contributes to the correct regulation of the Ca2+ homeostasis necessary for optimal PepMV infection. PepMV is a pandemic virus that causes significant losses in tomato crops worldwide. In spite of its importance, no tomato-resistant varieties have been deployed yet; the mutant identified here has great potential to breed tomato varieties resistant to PepMV.

Characterization of Hsp17, a Novel Small Heat Shock Protein, in Sphingomonas melonis TY under Heat Stress.

Bacteria are constantly exposed to a variety of environmental stresses. Temperature is considered one of the most important environmental factors affecting microbial growth and survival. As ubiquitous environmental microorganisms, Sphingomonas species play essential roles in the biodegradation of organic contaminants, plant protection, and environmental remediation. Understanding the mechanism by which they respond to heat shock will help further improve cell resistance by applying synthetic biological strategies. Here, we assessed the transcriptomic and proteomic responses of Sphingomonas melonis TY to heat shock and found that stressful conditions caused significant changes in functional genes related to protein synthesis at the transcriptional level. The most notable changes observed were increases in the transcription (1,857-fold) and protein expression (11-fold) of Hsp17, which belongs to the small heat shock protein family, and the function of Hsp17 in heat stress was further investigated in this study. We found that the deletion of hsp17 reduced the capacity of the cells to tolerate high temperatures, whereas the overexpression of hsp17 significantly enhanced the ability of the cells to withstand high temperatures. Moreover, the heterologous expression of hsp17 in Escherichia coli DH5α conferred to the bacterium the ability to resist heat stress. Interestingly, its cells were elongated and formed connected cells following the increase in temperature, while hsp17 overexpression restored their normal morphology under high temperature. In general, these results indicate that the novel small heat shock protein Hsp17 greatly contributes to maintaining cell viability and morphology under stress conditions. IMPORTANCE Temperature is generally considered the most important factor affecting metabolic functions and the survival of microbes. As molecular chaperones, small heat shock proteins can prevent damaged protein aggregation during abiotic stress, especially heat stress. Sphingomonas species are widely distributed in nature, and they can frequently be found in various extreme environments. However, the role of small heat shock proteins in Sphingomonas under high-temperature stress has not been elucidated. This study greatly enhances our understanding of a novel identified protein, Hsp17, in S. melonis TY in terms of its ability to resist heat stress and maintain cell morphology under high temperature, leading to a broader understanding of how microbes adapt to environmental extremes. Furthermore, our study will provide potential heat resistance elements for further enhancing cellular resistance as well as the synthetic biological applications of Sphingomonas.