Analysis of the early-flowering mechanisms and generation of T-DNA tagging lines in Kitaake, a model rice cultivar

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 t...

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Veröffentlicht in:Journal of experimental botany. - 1985. - 64(2013), 14 vom: 01. Nov., Seite 4169-82
1. Verfasser: Kim, Song Lim (VerfasserIn)
Weitere Verfasser: Choi, Minkyung, Jung, Ki-Hong, An, Gynheung
Format: Online-Aufsatz
Sprache:English
Veröffentlicht: 2013
Zugriff auf das übergeordnete Werk:Journal of experimental botany
Schlagworte:Journal Article Research Support, Non-U.S. Gov't Flanking sequence database GUS Kitaake T-DNA. flowering time genes splicing donor and acceptor DNA, Bacterial Plant Proteins mehr... T-DNA Glucuronidase EC 3.2.1.31
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520 |a 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 
650 4 |a Journal Article 
650 4 |a Research Support, Non-U.S. Gov't 
650 4 |a Flanking sequence database 
650 4 |a GUS 
650 4 |a Kitaake 
650 4 |a T-DNA. 
650 4 |a flowering time genes 
650 4 |a splicing donor and acceptor 
650 7 |a DNA, Bacterial  |2 NLM 
650 7 |a Plant Proteins  |2 NLM 
650 7 |a T-DNA  |2 NLM 
650 7 |a Glucuronidase  |2 NLM 
650 7 |a EC 3.2.1.31  |2 NLM 
700 1 |a Choi, Minkyung  |e verfasserin  |4 aut 
700 1 |a Jung, Ki-Hong  |e verfasserin  |4 aut 
700 1 |a An, Gynheung  |e verfasserin  |4 aut 
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