Genetic architecture of variation in heading date among Asian rice accessions.
Genetic architecture of variation in heading date among Asian rice accessions.
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DOI：
10.1186/s12870-015-0501-x
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发表时间：
2015-05-08
影响因子：
5.3
通讯作者：
Yano M
中科院分区：
文献类型：
--
作者：
Hori K;Nonoue Y;Ono N;Shibaya T;Ebana K;Matsubara K;Ogiso-Tanaka E;Tanabata T;Sugimoto K;Taguchi-Shiobara F;Yonemaru J;Mizobuchi R;Uga Y;Fukuda A;Ueda T;Yamamoto S;Yamanouchi U;Takai T;Ikka T;Kondo K;Hoshino T;Yamamoto E;Adachi S;Nagasaki H;Shomura A;Shimizu T;Kono I;Ito S;Mizubayashi T;Kitazawa N;Nagata K;Ando T;Fukuoka S;Yamamoto T;Yano M
抽穗期是决定水稻区域和季节适应性的重要因素，也是水稻育种的主要选择目标。尽管近20年来对水稻抽穗期的分子调控研究取得了长足的进展，但以往分离的基因和已鉴定的数量性状基因座(QTL)不能完全解释不同水稻材料抽穗期的自然变异。为了从遗传上剖析水稻抽穗期自然发生的变异，我们收集了来自亚洲不同地区的11个不同水稻材料(5个籼稻、3个澳稻和3个粳稻)的高级回交群体的QTL，这些QTL来自于杂交组合Koshihikari(作为共同亲本)。对14,000多个回交个体的QTL分析表明，255个QTL广泛分布于水稻基因组中。在检测到的QTL中，有128个QTL与已有研究确定的抽穗期基因hd1、hd6、hd3a、Ghd7、DTH8和RFT1的基因组位置相对应。除抽穗期基因外，其余127个QTL位于不同的染色体区域。我们的结果表明，超前回交后代允许我们检测和确认加性效应相对较小的QTL，而水稻抽穗期的自然变异可能是大效和小效QTL的组合造成的。我们还发现玉米、拟南芥和水稻在抽穗期(开花时间)的遗传结构上存在差异。本文的在线版本(doi：10.1186/s12870-0150501-x)包含补充材料，授权用户可以使用。
Heading date, a crucial factor determining regional and seasonal adaptation in rice (Oryza sativa L.), has been a major selection target in breeding programs. Although considerable progress has been made in our understanding of the molecular regulation of heading date in rice during last two decades, the previously isolated genes and identified quantitative trait loci (QTLs) cannot fully explain the natural variation for heading date in diverse rice accessions. To genetically dissect naturally occurring variation in rice heading date, we collected QTLs in advanced-backcross populations derived from multiple crosses of the japonica rice accession Koshihikari (as a common parental line) with 11 diverse rice accessions (5 indica, 3 aus, and 3 japonica) that originate from various regions of Asia. QTL analyses of over 14,000 backcrossed individuals revealed 255 QTLs distributed widely across the rice genome. Among the detected QTLs, 128 QTLs corresponded to genomic positions of heading date genes identified by previous studies, such as Hd1, Hd6, Hd3a, Ghd7, DTH8, and RFT1. The other 127 QTLs were detected in different chromosomal regions than heading date genes. Our results indicate that advanced-backcross progeny allowed us to detect and confirm QTLs with relatively small additive effects, and the natural variation in rice heading date could result from combinations of large- and small-effect QTLs. We also found differences in the genetic architecture of heading date (flowering time) among maize, Arabidopsis, and rice. The online version of this article (doi:10.1186/s12870-015-0501-x) contains supplementary material, which is available to authorized users.
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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
通讯作者：
Wan JM
影响因子：
5.4
作者：
Ebana, Kaworu;Shibaya, Taeko;Wu, Jianzhong;Matsubara, Kazuki;Kanamori, Hiroyuki;Yamane, Hiroko;Yamanouchi, Utako;Mizubayashi, Tatsumi;Kono, Izumi;Shomura, Ayahiko;Ito, Sachie;Ando, Tsuyu;Hori, Kiyosumi;Matsumoto, Takashi;Yano, Masahiro
通讯作者：
Yano, Masahiro
影响因子：
2.4
作者：
Kojima, Y;Ebana, K;Kawase, M
通讯作者：
Kawase, M
在评估玉米多样性和相关性评估中简单序列重复和单核苷酸多态性的经验比较。
影响因子：
3.7
作者：
Hamblin, Martha T.;Warburton, Marilyn L.;Buckler, Edward S.
通讯作者：
Buckler, Edward S.
影响因子：
56.9
作者：
Buckler, Edward S.;Holland, James B.;McMullen, Michael D.
通讯作者：
McMullen, Michael D.