RRC ID 50327
著者 Minami A, Yano K, Gamuyao R, Nagai K, Kuroha T, Ayano M, Nakamori M, Koike M, Kondo Y, Niimi Y, Kuwata K, Suzuki T, Higashiyama T, Takebayashi Y, Kojima M, Sakakibara H, Toyoda A, Fujiyama A, Kurata N, Ashikari M, Reuscher S.
タイトル Time-Course Transcriptomics Analysis Reveals Key Responses of Submerged Deepwater Rice to Flooding.
ジャーナル Plant Physiol
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 transcript assembly revealed transcripts that were specific to cv C9285, including submergence-induced biotic stress-related genes. Our multifaceted transcriptome approach using the rice shoot base region illustrates a differential response to submergence between deepwater and nondeepwater rice. Jasmonic acid metabolism appears to participate in the submergence-mediated internode elongation response of deepwater rice.
巻・号 176(4)
ページ 3081-3102
公開日 2018-4-1
DOI 10.1104/pp.17.00858
PII pp.17.00858
PMID 29475897
PMC PMC5884608
MeSH Adaptation, Physiological / genetics Cyclopentanes / metabolism Floods* Gene Expression Profiling / methods* Gene Expression Regulation, Developmental Gene Expression Regulation, Plant Gibberellins / biosynthesis Oryza / genetics* Oryza / growth & development Oryza / metabolism Oxylipins / metabolism Plant Leaves / genetics* Plant Leaves / growth & development Plant Leaves / metabolism Plant Shoots / genetics* Plant Shoots / growth & development Plant Shoots / metabolism Seedlings / genetics Seedlings / growth & development Seedlings / metabolism Time Factors Transcription Factors / genetics Transcription Factors / metabolism Water / metabolism*
IF 6.902
引用数 15
リソース情報
イネ C9285