Toward the understanding of the regulation of seed shattering habit in cereal plants using wild species

利用野生物种了解谷类植物种子落粒习性的调节

• 批准号: 23580473
• 负责人: ISHIKAWA RYO
• 金额: $ 3.58万
• 依托单位: Kobe University
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Scientific Research (C)
• 财政年份: 2011
• 资助国家: 日本
• 起止时间: 2011 至 2013
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-23580473/
• 关键词: イネ; 脱粒性

Previously, two major quantitative trait loci (QTLs, qSH1 and sh4) were shown to be responsible for the seed-shattering degree. We produced introgression lines carrying cultivated alleles from O. sativa Nipponbare at the two major QTLs in wild rice O. rufipogon W630, genetic background. The introgression lines carrying Nipponbare alleles at either or both loci showed complete or partial abscission layer formation, respectively. This result indicated that other unknown loci might be involved in enhancing seed shattering in wild rice. Using an F2 population between Nipponbare and the wild introgression line carrying the Nipponbare alleles at the two QTLs. We identified a single QTL regulating seed-shattering degree and named it qSH3. A significant effect on seed-shattering degree was observed for the wild introgression line carrying Nipponbare alleles at qSH3 and the two QTLs, suggesting an important role of qSH3 on seed shattering in coordination with the two QTLs.

以前，两个主要的数量性状位点（qSH 1和sh4）被证明是负责种子脱落程度。我们从O. sativa Nipponbare在野生稻O. rufipogon W630，遗传背景。在一个或两个位点上携带日本晴等位基因的渐渗系分别显示完全或部分分离层形成。这一结果表明，其他未知的位点可能参与提高野生稻种子的落粒率。利用在两个QTL上携带日本晴等位基因的日本晴与野生渐渗系的F2群体。我们确定了一个控制落粒度的QTL，并将其命名为qSH3。结果表明，携带日本晴qSH3等位基因的野生导入系对落粒率有显著影响，qSH3与这2个QTL协同作用对落粒率有重要影响。

项目成果

Identification of a quantitative trait locus involved in abscission layer formation for seed shattering in Asian wild rice, Oryza rufipogon

亚洲野生稻种子落粒离层形成相关数量性状基因座的鉴定

• 发表时间: 2014
• 作者: Htun TM;Inoue C;Chhourn O;Ishii T;Ishikawa R
• 通讯作者: Ishikawa R

QTL analysis for submergence avoidance using backcross recombinant inbred lines between Oryza sativa and O. rufipogon

• DOI: 10.18964/jcr.56.0_45
• 发表时间: 2011
• 作者: Phuong Dang Thai Phan;P. Thanh;N. Mori;R. Ishikawa;T. Ishii

DNA Methylation: Principles, Mechanisms and Challenges The Role of DNA Methylation in Plants, Chapter 3

DNA 甲基化：原理、机制和挑战 DNA 甲基化在植物中的作用，第 3 章

• 发表时间: 2012
• 作者: Kenji Osabe;Taku Sasaki;Ryo Ishikawa;and Ryo Fujimoto
• 通讯作者: and Ryo Fujimoto

野生イネ(Oryza rufipogon)の遺伝的背景における種子脱粒性遺伝子座間の相互作用

野生稻（Oryza rufipogon）遗传背景中种子脱落位点之间的相互作用

• 发表时间: 2014
• 作者: 花神彩香;橋本智美;小宅綾菜;岸本利彦;四方哲也;山本和輝・織田裕二・長谷田茜・小野寺康之・三上哲夫;井上千鶴,Htun TM,石井尊生,石川亮
• 通讯作者: 井上千鶴,Htun TM,石井尊生,石川亮

Phytochrome B regulates Heading date 1 (Hd1)-mediated expression of rice florigen Hd3a and critical day length in rice

• DOI: 10.1007/s00438-011-0621-4
• 发表时间: 2011-06-01
• 期刊: MOLECULAR GENETICS AND GENOMICS
• 影响因子: 3.1
• 作者: Ishikawa, Ryo;Aoki, Mayumi;Shimamoto, Ko
• 通讯作者: Shimamoto, Ko