Analysis of the early-flowering mechanisms and generation of T-DNA tagging lines in Kitaake, a model rice cultivar.
Analysis of the early-flowering mechanisms and generation of T-DNA tagging lines in Kitaake, a model rice cultivar.
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DOI：
10.1093/jxb/ert226
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发表时间：
2013-11
影响因子：
6.9
通讯作者：
An G
中科院分区：
文献类型：
--
作者：
Kim SL;Choi M;Jung KH;An G
As an extremely early flowering cultivar, rice cultivar Kitaake is a suitable model system for molecular studies. Expression analyses revealed that transcript levels of the flowering repressor Ghd7 were decreased while those of its downstream genes, Ehd1, Hd3a, and RFT1, were increased. Sequencing the known flowering-regulator genes revealed mutations in Ghd7 and OsPRR37 that cause early translation termination and amino acid substitutions, respectively. Genetic analysis of F2 progeny from a cross between cv. Kitaake and cv. Dongjin indicated that those mutations additively contribute to the early-flowering phenotype in cv. Kitaake. Because the short life cycle facilitates genetics research, this study generated 10 000 T-DNA tagging lines and deduced 6758 flanking sequence tags (FSTs), in which 3122 were genic and 3636 were intergenic. Among the genic lines, 367 (11.8%) were inserted into new genes that were not previously tagged. Because the lines were generated by T-DNA that contained the promoterless GUS reporter gene, which had an intron with triple splicing donors/acceptors in the right border region, a high efficiency of GUS expression was shown in various organs. Sequencing of the GUS-positive lines demonstrated that the third splicing donor and the first splicing acceptor of the vector were extensively used. The FST data have now been released into the public domain for seed distribution and facilitation of rice research.
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影响因子：
44.1
作者：
Fu, Fang-Fang;Ye, Rui;Xue, Hong-Wei
通讯作者：
Xue, Hong-Wei
影响因子：
7.2
作者：
Kumar, CS;Wing, RA;Sundaresan, V
通讯作者：
Sundaresan, V
影响因子：
7.2
作者：
Jeong, DH;An, S;An, G
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An, G
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An, SY;Park, S;An, GH
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Chern, Chyr-Guan;Fan, Ming-Jen;Hsing, Yue-Ie C.
通讯作者：
Hsing, Yue-Ie C.