Short, direct repeats (SDRs)-mediated post-transcriptional processing of a transcription factor gene OsVP1 in rice (Oryza sativa).

Short, direct repeats (SDRs)-mediated post-transcriptional processing of a transcription factor gene OsVP1 in rice (Oryza sativa). Research Abstract Details 

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Short, direct repeats (SDRs)-mediated post-transcriptional processing of a transcription factor gene OsVP1 in rice (Oryza sativa). Abstract Text:

Jing Fan,Xiangli Niu,Yuguo Wang,Guangjun Ren,Ting Zhuo,Yi Yang,Bao-Rong Lu,Yongsheng Liu,Jing Fan,Xiangli Niu,Yuguo Wang,Guangjun Ren,Ting Zhuo,Yi Yang,Bao-Rong Lu,Yongsheng Liu,Jing Fan,Xiangli Niu,Yuguo Wang,Guangjun Ren,Ting Zhuo,Yi Yang,Bao-Rong Lu,Yongsheng Liu,

The various degrees of preharvest sprouting occurring in hybrid rice is a limiting factor in the propagation and production of hybrid rice seeds. The phenotype of sprouted rice is very similar to that of the maize (Zea mays) seed-specific mutation viviparous 1. VP1 has been shown to be a transcription factor essential for seed maturation and dormancy induction. In this study, numerous truncated transcripts of OsVP1 resulting from an unusual post-transcriptional processing, were detected in four rice (Oryza sativa) cultivars. The observed events took place at a region spanning exons 1 to 5, and led to a variety of deletions that resulted in the loss of functional domain and frame-shifts with premature termination by introducing a stop codon. Various proportions of the transcripts expressed in both immature and mature embryos were observed to be incorrectly processed and associated with the genetic variation of preharvest sprouting rates among various rice varieties. In sprouting-susceptible rice cultivars, G46B and HeiB, many more incorrectly processed OsVP1 transcripts were expressed in immature than in mature embryos, indicating that the unusual post-transcriptional processing of the OsVP1 gene was developmentally regulated. In addition, comprehensive sequence analyses demonstrated the presence of paired short direct repeats (SDRs) at the junctions of the unusual excision sites in exons of OsVP1 gene. Site selection for the deletion of exon materials was altered along with the genotypes and developmental stages.

Short, direct repeats (SDRs)-mediated post-transcriptional processing of a transcription factor gene OsVP1 in rice (Oryza sativa). Publishing Authors By Initials

J Fan,X Niu,Y Wang,G Ren,T Zhuo,Y Yang,BR Lu,Y Liu,J Fan,X Niu,Y Wang,G Ren,T Zhuo,Y Yang,BR Lu,Y Liu,J Fan,X Niu,Y Wang,G Ren,T Zhuo,Y Yang,BR Lu,Y Liu,

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Short, direct repeats (SDRs)-mediated post-transcriptional processing of a transcription factor gene OsVP1 in rice (Oryza sativa). Journal Published:

PUBLICATION TYPE: Research Support, Non-U.S. Gov

Journal: Journal of experimental botany

VOLUME: 58

Page Numbers: 3811-7

Journal Abbreviation: J. Exp. Bot.

ISSN: 1460-2431

DAY: 6

MONTH: 12

YEAR: 2007

Short, direct repeats (SDRs)-mediated post-transcriptional processing of a transcription factor gene OsVP1 in rice (Oryza sativa). Information

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LANGUAGE: eng

NlmUniqueID: 9882906

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Grant and Affiliation Information for Short, direct repeats (SDRs)-mediated post-transcriptional processing of a transcription factor gene OsVP1 in rice (Oryza sativa).

AFFILIATION: Ministry of Education Key Laboratory for Bio-resource and Eco-environment, College of Life Science, Sichuan University, Chengdu 610064, China.

Country: England

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MEDLINETA: J Exp Bot

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