アブシシン酸受容体の利用による節水性と耐乾性を兼ね備えたコムギの開発

• 妻鹿 良亮

  山口大学・大学院創成科学研究科

• 岡本 昌憲

  宇都宮大学・バイオサイエンス教育研究センター

書誌事項

タイトル別名

• Functional enhancement of abscisic acid receptor confers water-saving and drought tolerance in wheat
• アブシシンサン ジュヨウタイ ノ リヨウ ニ ヨル セッスイセイ ト タイカンセイ オ カネ ソナエタ コムギ ノ カイハツ

抄録

Many climate models predict that water stress will increasingly challenge agricultural yields and exacerbate projected food deficits.　To maintain a stable food supply, the improvement of water use in wheat crop production is essential to overcome water resource deficiencies.　The phytohormone abscisic acid （ABA） has critical roles for drought stress tolerance and the control of transpiration from leaves.　In this report, we introduce that enhancing the response of ABA signaling using an ABA receptor can confer drought stress tolerance and increase water use efficiency （i.e., the ratio of CO2 assimilation to transpiration）.　We developed an ABA-receptor-overexpressing wheat （TaPYLox） that exhibited significantly lower total lifetime water consumption and increased biomass and grain production per liter of water consumption.　Improved water use efficiency in TaPYLox was attributed to the increased photosynthetic activity in the leaves.　TaPYLox also alleviated the decline of seed productivity and grain quality under reduced water conditions.　Our findings provide a general strategy for increasing water productivity that should be portable to other crops due to the high conservation of the ABA signaling pathway.

収録刊行物

• 植物の生長調節

  植物の生長調節 55 (2), 126-130, 2020

  一般社団法人 植物化学調節学会

詳細情報

• CRID: 1390290473084396544
• NII論文ID: 130008131341
• NII書誌ID: AA11550064
• DOI: 10.18978/jscrp.55.2_126
• ISSN: 21896305
• ISSN: 13465406
• NDL書誌ID: 031215726
• Web Site: https://ndlsearch.ndl.go.jp/books/R000000004-I031215726
• 本文言語コード: ja
• データソース種別:
  • JaLC
  • NDL
  • CiNii Articles
  • KAKEN
• 抄録ライセンスフラグ: 使用不可