Peanut Growth Research Articles

Investigation on growth and development of 42 kDa chitinase transgenic peanuts (Arachis hypogaea L.) cultivar L14 under in vivo condition

The purpose of this study was to assess the growth and development of chitinase transgenic peanuts against phytopathogenic fungi including lines WTA-2 containing the Chi42 gene, S1A-15 containing the syncodChi42-1 gene and S2A-12 containing the syncodChi42-2 gene. The present results show that the peanut lines containing two optimized genes derived from the Chi42 wild-type gene of Trichoderma asperellum SH16, S1A-15 (syncodChi42-1) and S2A-12 (syncodChi42-2) seemed to grow stronger and produce a higher number of mature pods, weight of 100 pods and weight of 100 seeds than line WAT-2 with the Chi42 gene and non-transgenic control. Moreover, lines S1A-15 and S2A-12 also resulted in higher seed quality in terms of lipid and protein content than in comparison to the WTA-2 line and the control. These findings suggest that chitinase transgenic peanuts containing one of two synthetic genes in peanut roots could be a promising candidate for peanut production against phytopathogenic fungi.

A Dosis Pupuk Mashitam Dan Pupuk Petro Biofertil Terhadap Pertumbuhan Dan Produksi Tanaman Kacang Tanah (Arachis hypogeae L.) Varietas Jerapah

Peanut (Arachis hypogeae L.) is a legume plant that has high nutritional value. In Indonesia, peanuts as a food source have the potential to be developed. The problem in the peanut farming business is that its production is still low. One of the efforts to increase peanut production is by proper fertilization. The continuous use of inorganic fertilizers causes land damage, so it is necessary to implement a sustainable agricultural system. The use of Mashitam organic fertilizer combined with Petro Biofertil biofertilizer is expected to increase peanut production and can be an alternative in reducing the use of inorganic fertilizers. This study aims to explain the effect of giving a dose of organic Mashitam and Petro Biofertil biofertilizers on the growth and production of peanuts. This study used a factorial randomized block design (RAK) with 2 factors and 3 replications. The first factor is the dose of Mashitam fertilizer with 3 levels, namely 300 kg/ha; 400 kg/ha; 500 kg/ha and the second factor is the dosage of Petro Biofertil fertilizer with 4 levels, namely 50 kg/ha; 75 kg/ha; 100 kg/ha; and 125 kg/ha which was repeated 3 times. The results of this study showed that there was a significant interaction in the treatment of giving Mashitam fertilizer and Petro Biofertil fertilizer on the variables: dry weight of 100 peanuts, after the DMRT 5% test showed that the treatment that had the highest average was M2P2 (Masitam fertilizer 400 kg/ha and Petro Biofertil fertilizer 75 kg/ha), while the efficient treatment is M1P3 (Mashitam fertilizer 300 kg/ha and Petro Biofertil fertilizer 100 kg/ha). In the single treatment, the dosage of Mashitam and Petro Biofertil fertilizers on the observed variables of plant height, number of leaves, stem diameter, and fresh weight of pods/plant samples at all observation ages showed no significant difference after further testing with the 5% BNT test.
 Keywords: Peanut, Petro Biofertil Biofertilizer, Mashitam Organic Fertilizer

Response of peanut plant and soil N-fixing bacterial communities to conventional and biodegradable microplastics

Microplastics (MPs) occur and distribute widely in agroecosystems, posing a potential threat to soil−plant systems. However, little is known about their effects on legumes and N-fixing microbes. Here, we explored the effects of high-density polyethylene (HDPE), polystyrene (PS), and polylactic acid (PLA) on the growth of peanuts and soil N-fixing bacterial communities. All MPs treatments showed no phytotoxic effects on plant biomass, and PS and PLA even increased plant height, especially at the high dose. All MPs changed soil NO3−-N and NH4+-N contents and the activities of urease and FDAse. Particularly, high-dose PLA decreased soil NO3−-N content by 97% and increased soil urease activity by 104%. In most cases, MPs negatively affected plant N content, and high-dose PLA had the most pronounced effects. All MPs especially PLA changed soil N-fixing bacterial community structure. Symbiotic N-fixer Rhizoboales were greatly enriched by high-dose PLA, accompanied by the emergence of root nodulation, which may represent an adaptive strategy for peanuts to overcome N deficiency caused by PLA MPs pollution. Our findings indicate that MPs can change peanut−N fixing bacteria systems in a type- and dose-dependent manner, and biodegradable MPs may have more profound consequences for N biogeochemical cycling than traditional MPs.

Genome-Wide Identification and Characterization of the Phytochrome Gene Family in Peanut.

To investigate the potential role of phytochrome (PHY) in peanut growth and its response to environmental fluctuations, eight candidate AhPHY genes were identified via genome-wide analysis of cultivated peanut. These AhPHY polypeptides were determined to possess acidic and hydrophilic physiochemical properties and exhibit subcellular localization patterns consistent with residence in the nucleus and cytoplasm. Phylogenetic analysis revealed that the AhPHY gene family members were classified into three subgroups homologous to the PHYA/B/E progenitors of Arabidopsis. AhPHY genes within the same clade largely displayed analogous gene structure, conserved motifs, and phosphorylation sites. AhPHY exhibited symmetrical distribution across peanut chromosomes, with 7 intraspecific syntenic gene pairs in peanut, as well as 4 and 20 interspecific PHY syntenic gene pairs in Arabidopsis and soybean, respectively. A total of 42 cis-elements were predicted in AhPHY promoters, including elements implicated in phytohormone regulation, stress induction, physiology, and photoresponse, suggesting putative fundamental roles across diverse biological processes. Moreover, spatiotemporal transcript profiling of AhPHY genes in various peanut tissues revealed distinct expression patterns for each member, alluding to putative functional specialization. This study contributes novel insights into the classification, structure, molecular evolution, and expression profiles of the peanut phytochrome gene family, and also provides phototransduction gene resources for further mechanistic characterization.

Increasing Calcium and Decreasing Nitrogen Fertilizers Improves Peanut Growth and Productivity by Enhancing Photosynthetic Efficiency and Nutrient Accumulation in Acidic Red Soil

Increasing Calcium and Decreasing Nitrogen Fertilizers Improves Peanut Growth and Productivity by Enhancing Photosynthetic Efficiency and Nutrient Accumulation in Acidic Red Soil

Regulation of the C:N Ratio Improves the N-Fixing Bacteria Activity, Root Growth, and Nodule Formation of Peanut

Regulation of the C:N Ratio Improves the N-Fixing Bacteria Activity, Root Growth, and Nodule Formation of Peanut

Response of Diverse Peanut Cultivars to Nano and Conventional Calcium Forms under Alkaline Sandy Soil.

Calcium is one of the most limiting factors for the growth and reproduction of peanut, which ultimately affects pod and seed yields. A two-year field experiment was carried out to assess the impact of five calcium applications, including nano-calcium and conventional forms, on growth, leaf nutrient content, yield traits, and quality parameters of three diverse peanut cultivars (Ismailia-1, Giza-5, and Giza-6). The applied calcium applications were calcium sulfate, which is recommended for commercial peanut cultivation and commonly referred to as gypsum (coded as Ca-1), calcium nitrate (Ca-2), nano-calcium nitrate (Ca-3), 50% calcium nitrate + 50% nano-calcium (Ca-4), and 50% calcium sulfate + 50% nano-calcium (Ca-5). Calcium sulfate (gypsum, Ca-1) was soil-supplied during the seedbed preparation as recommended, while the other calcium applications (Ca-2, Ca-3, Ca-4, and Ca-5) were exogenously sprayed three times at 30, 45, and 60 days after sowing. The soil of the experimental site was alkaline, with a high pH of 8.6. The results revealed significant differences among cultivars, calcium applications, and their interactions. The soil-supplied gypsum Ca-1 displayed lower agronomic performance on all recorded growth, leaf nutrient content, yield traits, and quality parameters. On the other hand, the foliar-supplied calcium, particularly Ca-4 and Ca-5, displayed superior effects compared to the other simple calcium forms. Ca-4 and Ca-5 produced significantly higher seed yield (3.58 and 3.38 t/ha) than the simple recommended form (Ca-1, 2.34 t/ha). This could be due to the difficulty of calcium uptake from soil-supplied calcium under high soil pH compared to the exogenously sprayed nano-calcium form. Moreover, the superior performance of Ca-4 and Ca-5 could be caused by the mixture of fertilizers from the synergistic effect of calcium and nitrate or sulfate. Furthermore, the effect of nitrate was applied in nano form in the Ca4 and Ca-5 treatments, which contributed to improving nutrient uptake efficiency and plant growth compared to the other treatments. The peanut cultivar Giza-6 showed superiority for most measured traits over the other two cultivars. The interaction effect between the assessed cultivars and calcium applications was significant for various traits. The cultivar Giza-6 showed a significant advantage for most measured traits with the mixture of 50% calcium nitrate + 50% nano-calcium (Ca-4). Conclusively, the results pointed out the advantage of the exogenously sprayed nano-calcium form combined with calcium nitrate or calcium sulfate for promoting growth, leaf nutrient content, yield, and quality traits of peanut, particularly with high-yielding cultivars under sandy soil with high pH.

Conjunctive and concentration dependent effects of nanoscale zinc and boron on the physiological, biochemical, nutrient uptake, and translocation processes in peanut (Arachis hypogaea L.)

In the present investigation, different concentrations (150, 200, 300, 400, and 500 mg/L) of nanoscale zinc oxide (ZnO) and boron (B) were applied through foliar spray (pot culture) to evaluate their effects on the growth and biochemical parameters of peanut. Nanoscale zinc oxide and nano boron were prepared using modified oxalate decomposition and encapsulation methods, respectively, and were characterized using techniques such as, X-ray diffraction (XRD), dynamic light scattering (DLS), ultraviolet–visible (UV–vis) spectroscopy, and transmission electron microscopy (TEM). The average size (37.2 nm, 53.6 nm) and zeta potential (−37.7 mV, −28.3 mV) of nano ZnO and nano boron were measured, respectively. Fourier transform infrared spectroscopic (FT-IR) studies revealed the functional groups that are present in the hydrosols. Highest germination percentage (98.7% and 96%), seedling vigor index (2359 and 1325) and total chlorophyll content (3.28 and 2.24 mg g−1) were recorded at 500 mg/L of nano zinc oxide and nano boron. Significantly higher peroxidase, catalase, superoxide dismutase (SOD) enzymatic activities, pod yield (39.76 g pot−1 and 38.14 g pot−1) and haulm yield (49.56 g pot−1 and 47.05 g pot−1) were also recorded with the application of nano ZnO and boron @ 500 mg/L. Translocation of nanoscale nutrients through stomata was clearly observed. Significant nutrient uptake with the foliar application of nanoscale nutrients has been recorded. The performance of groundnut (in terms of yield, quality and nutrient uptake) was significantly enhanced with the application of nanoscale nutrients and this point to achieving the nutrient bio-fortification with the desired levels for the betterment of human health.

Increased Growth and Yield of Peanuts (Arachis Hypogaea L.) with Tillage and Liquid Organic Fertilizer Fish Waste.

Peanut (Arachis hypogaea L.) is an important food commodity in Indonesia. The low production of peanuts in Riau Province has not been able to meet the people's need for peanuts. According to the Riau Province Food Crops Service (2022) the need for peanuts in Riau Province in 2019 is 8,516 tons, in 2020 the need for peanuts is 7,390 tons, and in 2021 the need for peanuts is 6,474 tons. This study aims to determine the effect and interaction between tillage and the application of fish waste liquid organic fertilizer (POC) and the single factor of both the growth and production of peanut plants and to get the best combination. The research was conducted using a split-plot design. The first factor as the main plot is tillage consisting of three levels, namely without tillage, minimum tillage, and maximum tillage. The second factor as a subplot was POC concentration consisting of four levels, without POC fish waste, 25% POC fish waste (250 ml POC + 750 ml water), 50% POC fish waste (500 ml POC + 500 ml water), and 50 % POC waste fish 75% (POC 750 ml + water 250 ml). Parameters observed included plant height, number of primary branches, flowering age, harvest age, number of pods, number of filled pods, seed production per plant, and weight of 100 seeds. The data obtained were analyzed statistically using analysis of variance and continued with Duncan's multiple range test at the 5% level using the SAS application. The results showed that the interaction of tillage and POC fish waste affected increasing plant height, number of primary branches, number of pods, number of filled pods, seed production per plant, and weight of 100 seeds.

Response of Banggai Yam Plant (Dioscorea alata) and Peanut (Arachys hypogaea) to Liquid Organic Fertilizer in Intercropping system

The aim of this study was to examine the effect of liquid organic fertilizer (LOF) on the yield and growth of local peanuts and yams from Banggai (casavva banggai) in an intercropping system. This study was conducted using a two-factor factorial Randomized Block Design. The first factor is the dose of Liquid Organic Fertilizer (LOF) (eco farming) consisting of three levels: Without LO, 3.5 l/ha, and 7 l/ha. The second factor is local yam varieties from Banggai Islands (Banggai sweet potato), namely Pusus, Solopia Patek, and Boan Mela. Each treatment was repeated three times. The results showed that the dose of LOF 7 l/ha increased the Leaf Area Index (LAI) of peanuts, there was an interaction between the dose of LOF and the Banggai yam variety on the dry weight of peanuts with the highest combination being achieved at a dose of LOF 7 l/ha planted with yam varieties of Solopia and Pussy. The Solopia Patek variety had the highest stem diameter, number of shoots, tuber length, and tuber weight compared to the Pusus and Boan Mela varieties.

Increasing Growth and Yield of Peanuts with Various Types and Dosages of Organic Fertilizer in Dry Land

Dry land is very potential to be developed into agricultural land, one of which is planting peanuts, although it has constraints such as low pH and low soil fertility. Efforts can be made to improve soil fertility by applying organic fertilizer. Organic fertilizers are expected to improve the soil's physical, chemical, and biological properties and provide nutrients that peanut plants need. This research aims to obtain the right organic fertilizer type and dosage to increase peanut production. This research was conducted in farmers' fields in Margo Bhakti Village, Block C unit II, Mesuji District, Ogan Komering Ilir Regency (OKI) from March to June 2021. The layout in the field used a factorial RAK design with 9 treatment combinations repeated 3 x. Type of Organic Fertilizer: cow manure organic fertilizer, chicken manure organic fertilizer, biofertilizer. Dosage of organic fertilizer: 200 kg/ha, 400 kg/ha, 600 kg/ha. The heaviest pod weight was achieved in the combination of biofertilizer treatment at the dosage of 400 kg/ha at 89.67 g/plant or 6.97 kg/plot and increased production by 109.31% when compared to cow manure organic fertilizer at the rate of 200 kg/ha.

APLIKASI PUPUK HAYATI MIKORIZA DALAM MENINGKATKAN FASE PERTUMBUHAN VEGETATIF DAN GENERATIF KACANG TANAH (Arachis hypogea L.)

Peanut has long been cultivated in Indonesia and is generally grown on dry land. The continuous use of inorganic fertilizers can have a negative impact on the soil, so there is a need for environmentally friendly fertilizers such as biological fertilizers. This study aimed to elucidate the effect of mycorrhiza biofertilizer on the vegetative and generative growth of peanuts. The study was conducted in the experimental field of Cikabayan IPB with a three-factor Completely Randomized Design. The treatments tested were 1) control, 2) 100% NPK fertilizer, 3) 100% organic fertilizer, 4) 100% organic fertilizer + NPK, 5) 5 g mycorrhizae, 6) 100% NPK + mycorrhizae 5 g, 7) 100% organic fertilizer + mycorrhiza 5 g, and 8) organic fertilizer + NPK 100% + mycorrhiza 5 g. Parameters observed included plant height, number of primary branches, number of pods, pod weight, colonization or root infection, number and types of spores. The results showed that the application of NPK fertilizer + organic fertilizer + mycorrhizae 5 g could increase vegetative and generative growth in peanut plants. The treatment of NPK+ organic fertilizer + mycorrhizae 5 g (AOM) had a very high percentage of infection, which was 86.67%. The AOM treatment had a high number of spores, which was 32 spores and 3 types of spores were successfully associated, namely Acaulospora sp1, Acaulospora sp 2 and Glomus etunicatum.

Stress Drought and Mycorrhizal Dose on the Growth Characteristics of Boci Sawala Pandanga Morotai Local Peanuts

Mycorrhizal can provide plant resistance when drought came. Thus, this study aims to examine the effect of stress drought and mycorrhizal dose on the growth of Boci Sawala Pandanga Morotai local peanuts. The study was conducted at the BPTP screen house North Maluku in Kusu Village, Tidore Kepulauan City, North Maluku Province from March to June 2022 with the elevation of 50m above sea level. It utilized a factorial design with 2 factors. The first factor is the drought (K) 2 levels (K0 = optimal and K1 = stress), and the second factor is mycorrhizal (M) 4 levels (M0 = 0 g/polybag, M1 = 20 g/polybag, M2 = 25 g/polybag, M3 = 30 g/polybag) with 3 replications. The parameters observed consisted of relative growth rate, flowering age, and number of gynophores. The fingerprint results showed that the Boci Swala Pandanga Morotai local peanuts cultivar is tolerant to drought conditions which can be seen from the relative growth rate, number of ginophores, and the fastest flower. With drought stress conditions by giving mycorrhiza 30 g/polybag of peanuts land, it still grew and worked.

Growth and yield performance of three peanut cultivars on different watering intervals

Many peanut planting fields have limited water resources, therefore farmers must use water efficiently. A study aimed to obtain appropriate watering intervals and adaptive peanut cultivars at limited water conditions. The greenhouse study was conducted at Central Bengkulu Regency, Indonesia, from December 2019 to March 2020. Three varieties of peanut (Takar 2, Talam 1, and Kancil) and four watering intervals (1, 3, 6, and 9-day intervals) were arranged using a split-plot design and replicated three times. Results showed that the three varieties evaluated had similar agronomic performance (P≥0.05). The Takar 2 and Kancil had similar growth and yield components to the dry land adaptive variety Talam 1. It indicates that Takar 2 and Kancil cultivars are suitable for cultivation in a water-limited field. Watering every 6 days reduced peanut growth and insignificantly differed from watering every 9 days. Daily watering produced the highest growth and yield of peanut, irrespective of genotypes. Nevertheless, in areas with limited water availability, watering every 3 days was sufficient with yield reduction by about 25.55% of watering daily.
 Keywords: drought, irrigation, peanut production

Is degradable plastic film alternative? Insights from crop productivity enhancement and soil environment improvement

Currently, it is unclear whether degradable film mulching is a feasible viable alternative to non-degradable film mulching for improving crop productivity and soil environmental conditions. In the present study, a three-year-long field experiment was conducted to evaluate the effects of three alternative degradable films and a traditional plastic film (PF) on soil properties and peanut growth performance. Results showed that degradable films enhanced peanut yields by 6.0–14.3% compared to no mulching (CK), while reduced the peanut yield compared to PF. The results of the structural decomposition model analysis attributed the positive correlations between peanut yields and soil temperature, soil organic carbon, soil alkali-hydrolyzable nitrogen, soil microbial biomass carbon (MBC), and soil microbial biomass nitrogen (MBN). The degradable films decreased soil temperature, soil organic matter, soil alkali-hydrolyzable nitrogen content, MBC and MBN content by 0.12–11.8%, 1.40–10.9%, 1.90–9.91%, 2.31–13.2% and 12.7–34.2% compared to PF, respectively, despite they performed better effects on soil environment than CK. Moreover, the degradation rates of the three degradable films ranged from 7.38% to 91.3%. The aliphatic polyester polylactic acid-based film was found to be the best alternative because of improvement of soil environment and crop yield as well as superior degradation properties.

Trichoderma viride F7 improves peanut performances while remediating cadmium-contaminated soil with microplastics

Microplastics (MPs) and cadmium (Cd) in soil have serious negative impacts on plant growth. As a bioremediator, Trichoderma viride may modulate the impacts of MPs and/or Cd on plant growth and heavy metal uptake. In this study, T. viride F7 was used to treat Cd-contaminated soil with and without the presence of polylactic acid MPs to investigate its effects on peanut growth, Cd uptake efficiency, and soil properties. Results showed that F7 increased soil pH, dissolved organic carbon, cation exchange capacity, microbial biomass nitrogen, and microbial biomass carbon, which resulted in increases of 2.10%–19.83% in peanut biomass and mitigated the negative effects of MPs and Cd on peanut growth. Trichoderma viride F7 reduced the soil bioavailable Cd and plant Cd concentrations by 16.68%–34.20% and 5.37%–25.84%, respectively. Regression path analysis showed that F7 could improve peanut performances by altering soil properties and reducing peanut Cd concentrations in MP-Cd-contaminated soil. Soil fungal community analysis indicated that the microbial community was altered via F7 inoculation, which antagonized Fusarium and promoted peanut growth. This study reveals the mechanisms of F7 in mitigating Cd contamination in the soil with the presence of MPs, which provides new ideas for managing MP-heavy metal-contaminated soil and improving soil health.

Comparative study of the effectiveness of nano-sized iron-containing particles as a foliar top-dressing of peanut in rainy conditions

The high loss of foliar-applied fertilizers in the wet season and other extreme weather conditions reduces fertilizer use efficiency remarkably low. Emerging nano-iron materials, owing to their highly desirable properties such as exceptionally small size, particle surface and interface attributes, strong adhesion and high iron ratio, could overcome the limitations of traditional fertilizers. However, their anti-leaching property, leaching resistance mechanism, iron nutrition enrichment capacity and cost effectiveness remain unclear. In this study, four nano-iron materials (Fe nanoparticles (Fe-NPs), Fe3O4-NPs, α-Fe2O3-NPs and γ-Fe2O3-NPs) were compared with traditional iron fertilizers (FeSO4 and Fe-EDTA). The results showed that the efficiency of traditional iron fertilizers decreased greatly under simulated rainfall conditions due to their poor leaching resistance. In contrast, nano-iron fertilizers performed exceptionally well under simulated rainfall conditions with significant increase in leaf iron concentration, photosynthesis and growth of peanut. This was mainly attributed to their decreased contact angle, increased wetting capacity and increased adhesion on plant surface, which collectively decreased fertilizer leaching remarkably. The adhesion capacity of Fe3O4-NPs (53.5 mN/m), was nearly three times that of traditional iron fertilizer (18.3 mN/m). Therefore, only a small amount of Fe3O4-NPs (4 mg/plant) was needed relative to traditional iron fertilizers (FeSO4, 59 mg/plant) to achieve comparable high leaf Fe concentration (1076.96 μg/g) under rainfall conditions. Cost evaluation suggests that the cost-competitiveness of Fe3O4-NPs will become comparable to that of FeSO4 when its price comes down from the current cost of $139/kg to $36/kg, the cost of FeSO4, which is likely considering the pace of nano-material technology development. Together, these results demonstrate the remarkable potential of nano-iron fertilizers in mitigating the escalating fertilizer cost and improving the environmental outcomes of peanut, as well as potentially other crops grown in wet season.

Agronomic Responses of Sweet Corn - Peanut Intercropping to Liquid Organic Fertilizer Grown in Different Dosages of Vermicompost

Applying organic fertilizer and intercropping systems are among the techniques for preserving land sustainability in organic vegetable production systems. In organic vegetable production, the use of liquid organic fertilizer has been suggested in addition to the use of solid organic fertilizer. This study evaluates how growth and yields of sweet corn and peanuts grown utilizing row intercropping respond to different vermicomposting dosages. A factorial experiment is arranged using a split-plot design with three replicates. The main plot is vermicomposting dosages; 5, 10, 15, 20, and 25 Mg/ha, and the sub-plot was the applications of liquid organic fertilizer, not fertilized and fertilized with liquid organic fertilizer. Results show that the application of liquid organic fertilizer elevated plant height and leaf area, length, diameter, and weight of husked ears of sweet corn. Vermicomposting increased plant height, husked ear length, husked ear diameter, and husked ear fresh weight of sweet corn. Twenty Mg/ha is the best dosage for producing sweet corn intercropped with peanuts. However, using vermicompost and liquid organic fertilizers did not increase the growth and yields of peanuts. Evaluation of nutrient uptakes by intercropped crops, sweet corn, and peanut, in organic production systems, should be the subject of further study.

Advances in omics research on peanut response to biotic stresses.

Peanut growth, development, and eventual production are constrained by biotic and abiotic stresses resulting in serious economic losses. To understand the response and tolerance mechanism of peanut to biotic and abiotic stresses, high-throughput Omics approaches have been applied in peanut research. Integrated Omics approaches are essential for elucidating the temporal and spatial changes that occur in peanut facing different stresses. The integration of functional genomics with other Omics highlights the relationships between peanut genomes and phenotypes under specific stress conditions. In this review, we focus on research on peanut biotic stresses. Here we review the primary types of biotic stresses that threaten sustainable peanut production, the multi-Omics technologies for peanut research and breeding, and the recent advances in various peanut Omics under biotic stresses, including genomics, transcriptomics, proteomics, metabolomics, miRNAomics, epigenomics and phenomics, for identification of biotic stress-related genes, proteins, metabolites and their networks as well as the development of potential traits. We also discuss the challenges, opportunities, and future directions for peanut Omics under biotic stresses, aiming sustainable food production. The Omics knowledge is instrumental for improving peanut tolerance to cope with various biotic stresses and for meeting the food demands of the exponentially growing global population.

Comparative Evaluation of Microbially-Produced Biostimulants on Peanut Growth

Improper fertilization has become an essential factor limiting peanut yield and quality improvement. To improve peanut yield and quality, the effects of different fertilizer additives on peanut growth and yield were investigated. In this work, the effects of four fertilizer additives produced by microorganisms (CL, T6, T4, and P1) on peanut growth and yield were evaluated through pot and field trials. The results indicated that all fertilizer additives significantly increased the branch number and biomass of peanuts compared to the control. Additionally, T6 and CL treatments led to significantly higher peanut yields in the field. The aboveground nitrogen concentration of peanuts treated with CL and T6 was also significantly higher than that of the control, while T4 treatment did not show a significant difference. Overall, CL and T6 had the best positive effect on the growth of peanuts. The potential application values of CL and T6 in peanuts showed that fertilizer additives produced by microorganisms could be used as effective measures to achieve highly efficient production in agriculture.