Time-Course Transcriptomics Analysis Reveals Key Responses of Submerged Deepwater Rice to Flooding

Plant Physiology
Anzu MinamiStefan Reuscher

Abstract

Water submergence is an environmental factor that limits plant growth and survival. Deepwater rice (Oryza sativa) adapts to submergence by rapidly elongating its internodes and thereby maintaining its leaves above the water surface. We performed a comparative RNA sequencing transcriptome analysis of the shoot base region, including basal nodes, internodes, and shoot apices of seedlings at two developmental stages from two varieties with contrasting deepwater growth responses. A transcriptomic comparison between deepwater rice cv C9285 and nondeepwater rice cv Taichung 65 revealed both similar and differential expression patterns between the two genotypes during submergence. The expression of genes related to gibberellin biosynthesis, trehalose biosynthesis, anaerobic fermentation, cell wall modification, and transcription factors that include ethylene-responsive factors was significantly different between the varieties. Interestingly, in both varieties, the jasmonic acid content at the shoot base decreased during submergence, while exogenous jasmonic acid inhibited submergence-induced internode elongation in cv C9285, suggesting that jasmonic acid plays a role in the submergence response of rice. Furthermore, a targeted de novo...Continue Reading

Citations

May 12, 2019·Development·Vrushali PatilSarah M McKim
Apr 11, 2019·Frontiers in Plant Science·Takeshi FukaoJulián Mario Peña-Castro
Apr 2, 2021·Frontiers in Plant Science·Anna KonkinaPanagiotis Kalaitzis
Sep 17, 2020··‘Ainun Sayyidah ZakiyahChoirun Nita Fikriani

❮ Previous
Next ❯

Related Concepts