Effects of Hd2 in the presence of the photoperiod-insensitive functional allele of Hd1 in rice.
Effects of Hd2 in the presence of the photoperiod-insensitive functional allele of Hd1 in rice.
复制标题
Hd1 光周期不敏感功能等位基因存在时 Hd2 对水稻的影响
DOI：
10.1242/bio.021071
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发表时间：
2016-11-15
期刊：
影响因子：
2.4
通讯作者：
Cheng SH
中科院分区：
文献类型：
--
作者：
Zhang ZH;Cao LY;Chen JY;Zhang YX;Zhuang JY;Cheng SH
水稻开花基因的光周期敏感性（PS）在水稻中的作用已经得到了广泛的认识，而这些基因的非光周期敏感性成分，特别是它们对基因间相互作用的影响却很少受到关注。本研究利用Hd1光周期敏感等位基因对光周期不敏感但继续影响抽穗期（HD）的水稻群体，对HD数量性状位点（QTL）进行了精细定位，并分析了其与Hd1的遗传关系。QTL定位于7号染色体长臂远端96.3 kb的区域。序列比较显示该QTL与Hd2相同。在近等基因系（NIL）群体中，Hd1和Hd2表现出光周期不敏感，对HD、株高和产量性状具有多效性。发现这两个基因在调节HD和产量性状方面主要是加性的。结果表明，参与光周期响应的开花基因的非ps组分在水稻开花时间和产量控制中起着重要作用，这将有助于育种者更好地操纵多效性基因，以平衡适应性和高产积累。摘要：研究表明，水稻Hd1和Hd2等位基因的光周期不敏感组分在平衡生态适应性和高产积累中起着重要作用。
ABSTRACT The role of photoperiod sensitivity (PS) of flowering genes have become well recognized in rice, whereas little attention has been drawn to the non-PS component of these genes, especially to their influence on gene-by-gene interactions. Rice populations in which the photoperiod-sensitive allele at Hd1 has become insensitive to photoperiod but continued to affect heading date (HD) were used in this study to fine-map a quantitative trait locus (QTL) for HD and analyze its genetic relationship to Hd1. The QTL was delimitated to a 96.3-kb region on the distal end of the long arm of chromosome 7. Sequence comparison revealed that this QTL is identical to Hd2. In the near-isogenic line (NIL) populations analyzed, Hd1 and Hd2 were shown to be photoperiod insensitive and have pleiotropic effects for HD, plant height and yield traits. The two genes were found to largely act additively in regulating HD and yield traits. The results indicate that non-PS components of flowering genes involved in photoperiod response play an important role in controlling flowering time and grain yield in rice, which should allow breeders to better manipulate pleiotropic genes for balancing adaptability and high-yielding accumulation. Summary: We show that photoperiod-insensitive components of alleles of Hd1 and Hd2 play an important role in balancing ecological adaptability and high-yield accumulation in rice.
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影响因子：
4.5
作者：
Gao H;Zheng XM;Fei G;Chen J;Jin M;Ren Y;Wu W;Zhou K;Sheng P;Zhou F;Jiang L;Wang J;Zhang X;Guo X;Wang JL;Cheng Z;Wu C;Wang H;Wan JM
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通讯作者：
McCouch, SR
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作者：
Matsubara, Kazuki;Yamanouchi, Utako;Yano, Masahiro
通讯作者：
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