This technology enhances drought stress resistance by transforming and overexpressing the CaADBZ1 bZIP transcription factor protein isolated from pepper, its encoding gene, and a recombinant vector containing this gene in plants. It also includes compositions, kits, and transgenic plants for enhancing resistance that utilize these proteins, genes, and vectors as active ingredients.
As global warming and desertification exacerbate water shortages, drought has hindered normal crop growth and significantly reduced grain yields. While plants respond to drought by closing stomata and accumulating abscisic acid (ABA), the ABA signaling pathway has not been fully elucidated, and research on drought-tolerance genes and their application in transgenic crops remains limited.
This technology is based on findings that silencing CaADBZ1 in pepper reduces ABA sensitivity and weakens drought resistance, while overexpressing this gene in Arabidopsis increases ABA sensitivity and significantly improves drought tolerance. Drought-tolerant plants can be created in two steps: inserting the nucleotide sequence of SEQ ID NO: 2 into a vector and transforming it for overexpression. This can be applied to developing drought-tolerant pepper varieties, breeding transgenic crops for arid regions, and improving plants for desert greening, enabling the creation of crops that maintain yields with less water and securing genetic resources for precisely regulating ABA responsiveness.
This invention was developed with support from the Ministry of Science and ICT for research on identifying the role of post-translational modification regulatory proteins in stomatal movement in pepper and utilizing them for stress tolerance.
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