Interaction of root-traits related QTL with soil stress factors in rainfed lowland and upland rice

旱稻和旱稻根性状相关QTL与土壤胁迫因子的相互作用

• 批准号: 22405042
• 负责人: YAMAUCHI Akira
• 金额: $ 11.23万
• 依托单位: Nagoya University
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Scientific Research (B)
• 财政年份: 2010
• 资助国家: 日本
• 起止时间: 2010-04-01 至 2014-03-31
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-22405042/
• 关键词: 土壌環境; 根; QTL; 相互作用; 天水田

Roots play important roles in crop adaptation to various abiotic stresses such as water stress, but traits responsible for such adaptations may differ with environments. This study aimed at identifying the root traits and their associated QTL, and evaluating their interactions with soil water stresses. We made an extensive survey on genetic resources in rice in the Philippines and evaluated their responses to water stress conditions. We then identified the root plasticity as one of the key traits for adaptation and a QTL that is related with branching on chr 6. Field experiments showed the genotype that showed greater dry matter production under rainfed lowland conditions may have exhibited the root plasticity at soil depths with more available soil moistures. In cases where root plasticity at deeper soil layers were observed, such root plastic development may have occurred in response to the reduction of soil hardness when the soil moisture was high during soil moisture fluctuations.

根系在作物适应各种非生物胁迫（如水分胁迫）中发挥着重要作用，但负责这种适应的性状可能因环境而异。本研究旨在鉴定根系性状及其相关QTL，并评价其与土壤水分胁迫的相互作用。我们对菲律宾水稻的遗传资源进行了广泛的调查，并评估了它们对水分胁迫条件的反应。然后，我们确定了根系可塑性是适应的关键性状之一，并且是与chr 6上的分支相关的QTL。田间试验表明，雨养低地条件下干物质产量较高的基因型可能在土壤有效水分较多的土壤深处表现出根系可塑性。在观察到较深土层根系塑性的情况下，这种根系塑性发育可能是在土壤湿度波动期间土壤湿度较高时土壤硬度降低的反应。

项目成果

乾燥ストレス条件下のイネ乾物生産における根系の可塑的発育の役割

干旱胁迫条件下根系塑性发育在水稻干物质生产中的作用

• 发表时间: 2012
• 作者: Murabayashi N;Sugiyama T;Zhang L;Kamimoto Y;Umekawa T;Ma N;Sagawa N.;亀岡笑・山内章
• 通讯作者: 亀岡笑・山内章

土壌乾燥条件下でのイネ乾物生産における根系発達と根水通導性の貢献度に関する定量的評価

干旱土壤条件下根系发育和根系导水率对水稻干物质生产贡献的定量评价

• 发表时间: 2013
• 作者: K.Miyamoto;A.Maruyama;Y.Haneishi;S.Matsumoto;T.Tsuboi;G.Asea;S.Okello;M.Takagaki;Masao Kikuchi;吉田佳督,吉田康子,佐藤祐造,薛迪,馬徳福,張玉梅,王培玉;亀岡 笑・Amelia Henry・三屋史朗・山内 章
• 通讯作者: 亀岡 笑・Amelia Henry・三屋史朗・山内 章

Measurement of bleeding rate and nitrogen content in bleeding sap of rice for evaluating the activity of root system

测定水稻伤流液中的伤流率和氮含量评价根系活性

• 发表时间: 2011
• 作者: Abe;J.;Morita;S.
• 通讯作者: S.

土壌水分変動条件に適応したイネ系統における乾燥ストレス後の再潅水に対する根系発育反応

适应不同土壤湿度条件的水稻品系干旱胁迫后根系发育对重新浇水的反应

• 发表时间: 2013
• 作者: Akemi Ohmiya;Masumi Hirashima;Masafumi Yagi;Koji Tanase;Chihiro Yamamizo;Tran Thiem Thi;大宮あけみ・佐々木克友・奈島賢児・小田（山溝）千尋・平島真澄・住友克彦;山内 章;渡辺健太・山溝千尋・小野公代・大宮あけみ・小野道之;仲田(狩野) 麻奈
• 通讯作者: 仲田(狩野) 麻奈

Field evaluation on functional roles of root plastic responses on dry matter production and grain yield of rice under cycles of transient soil moisture stresses using chromosome segment substitution lines

• DOI: 10.1007/s11104-012-1178-7
• 发表时间: 2012-03
• 期刊: Plant and Soil
• 影响因子: 4.9
• 作者: J. Niones;R. Suralta;Y. Inukai;A. Yamauchi