Abstract
Unpredictable climate change might cause serious lack of food in the world. Therefore, in the present world, it is urgent to prepare countermeasures to solve problems in terms of human survival. In this research, quantitative trait loci (QTLs) were analyzed when rice attacked by white backed planthopper (WBPH) were analyzed using 120 Cheongcheong/Nagdong double haploid lines. Moreover, from the detected QTLs, WBPH resistance-related genes were screened in large candidate genes. Among them, OsCM, a major gene in the synthesis of Cochlioquinone-9 (cq-9), was screened. OsCM has high homology with the sequence of chorismate mutase, and exists in various functional and structural forms in plants that produce aromatic amino acids. It also induces resistance to biotic stress through the synthesis of secondary metabolites in plants. The WBPH resistance was improved in rice overexpressed through map-based cloning of the WBPH resistance-related gene OsCM, which was finally detected by QTL mapping. In addition, cq-9 increased the survival rate of caecal ligation puncture (CLP)-surgery mice by 60%. Moreover, the aorta of rat treated with cq-9 was effective in vasodilation response and significantly reduced the aggregation of rat platelets induced by collagen treatment. A cq-9, which is strongly associated with resistance to WBPH in rice, is also associated with positive effect of CLP surgery mice survival rate, vasodilation, and significantly reduced rat platelet aggregation induced by collagen treatment. Therefore, cq-9 presents research possibilities as a substance in a new paradigm that can act on both Plant-Insect in response to the present unpredictable future.
Highlights
The Green Revolution of the 1960s led to a notable acceleration in grain production in developing countries, mainly due to the development of high-yielding hybrid strains of rice (Oryza sativa L.), wheat and maize, and the introduction of chemical fertilizers, pesticides and irrigation
The resistance score was assigned to the Cheongcheong/Nagdong double haploid (CNDH) lines through the comparison of phenotypes after treatment with white backed planthopper (WBPH)
The CNDH lines showed resistance and susceptible when inoculated with WBPH, and as a result of high-performance liquid chromatography (HPLC) analysis, peaks appeared different at specific times and showed various concentrations (Supplementary Materials Figure S1)
Summary
The Green Revolution of the 1960s led to a notable acceleration in grain production in developing countries, mainly due to the development of high-yielding hybrid strains of rice (Oryza sativa L.), wheat and maize, and the introduction of chemical fertilizers, pesticides and irrigation. Because of their genetic homogeneity, the cultivars were more susceptible to pests, weeds and diseases than the traditional varieties. White backed planthopper (WBPH; Sogatella furcifera Horváth) and brown planthopper (Nilaparvata lugens Stal, BPH) are among the major pests causing the greatest damage to rice crops worldwide. SRBSDV belongs to the Fijivirus genus which includes Oat Sterile Dwarf Virus (OSDV), Garlic Dwarf Virus (GDV), Fiji Disease
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