2020年10月
Metabolic and physiological responses to progressive drought stress in bread wheat
SCIENTIFIC REPORTS
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- 巻
- 10
- 号
- 1
- 開始ページ
- 17189
- 終了ページ
- 17189
- 記述言語
- 英語
- 掲載種別
- 研究論文(学術雑誌)
- DOI
- 10.1038/s41598-020-74303-6
- 出版者・発行元
- NATURE RESEARCH
Wheat (Tritium aestivum) is vulnerable to future climate change because it is predominantly grown under rain-fed conditions in drought-prone areas. Thus, in-depth understanding of drought effect on wheat metabolism is essential for developing drought-tolerant wheat varieties. Here, we exposed wheat 'Norin 61' plants to progressive drought stress [0 (before drought), 2, 4, 6, 8, and 10 days after withholding water] during the flowering stage to investigate physiological and metabolomic responses. Transcriptional analyses of key abscisic acid-responsive genes indicated that abscisic acid signalling played a major role in the adaptation of wheat to water deficit. Carbon isotope composition had a higher value than the control while canopy temperature (CT) increased under drought stress. The CT depression was tightly correlated with soil water potential (SWP). Additionally, SWP at -517 kPa was identified as the critical point for increasing CT and inducing reactive oxygen species. Metabolome analysis identified four potential drought-responsive biomarkers, the enhancement of nitrogen recycling through purine and pyrimidine metabolism, drought-induced senescence based on 1-aminocyclopropane-1-carboxylic acid and Asn accumulation, and an anti-senescence response through serotonin accumulation under severe drought stress. Our findings provide in-depth insight into molecular, physiological and metabolite changes involved in drought response which are useful for wheat breeding programs to develop drought-tolerant wheat varieties.
- リンク情報
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- DOI
- https://doi.org/10.1038/s41598-020-74303-6
- PubMed
- https://www.ncbi.nlm.nih.gov/pubmed/33057205
- PubMed Central
- https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7560863
- Web of Science
- https://gateway.webofknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcAuth=JSTA_CEL&SrcApp=J_Gate_JST&DestLinkType=FullRecord&KeyUT=WOS:000582678400019&DestApp=WOS_CPL
- ID情報
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- DOI : 10.1038/s41598-020-74303-6
- ISSN : 2045-2322
- PubMed ID : 33057205
- PubMed Central 記事ID : PMC7560863
- Web of Science ID : WOS:000582678400019