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학술연구/단체지원/교육 등 연구자 활동을 지속하도록 DBpia가 지원하고 있어요.
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논문 기본 정보
- 자료유형
- 학술저널
- 저자정보
- 발행연도
- 2019.1
- 수록면
- 858 - 868 (11page)
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Shoot branching is an essential agronomic trait that impacts on plant architecture and yield. Shoot branching is determined by two independent steps: axillary meristem formation and axillary bud outgrowth. Although several genes and regulatory mechanism have been studied with respect to shoot branching, the roles of chromatin-remodeling factors in the developmental process have not been reported in rice. We previously identified a chromatin-remodeling factor OsVIL2 that controls the trimethylation of histone H3 lysine 27 (H3K27me3) at target genes. In this study, we report that loss-of-function mutants in OsVIL2 showed a phenotype of reduced tiller number in rice. The reduction was due to a defect in axillary bud (tiller) outgrowth rather than axillary meristem initiation. Analysis of the expression patterns of the tiller-related genes revealed that expression of OsTB1, which is a negative regulator of bud outgrowth, was increased in osvil2 mutants. Chromatin immunoprecipitation assays showed that OsVIL2 binds to the promoter region of OsTB1 chromatin in wild-type rice, but the binding was not observed in osvil2 mutants. Tiller number of double mutant osvil2 ostb1 was similar to that of ostb1, suggesting that osvil2 is epistatic to ostb1. These observations indicate that OsVIL2 suppresses OsTB1 expression by chromatin modification, thereby inducing bud outgrowth.
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참고문헌 (44)
참고문헌 신청
Arite, T. / 2007 / DWARF10, an RMS1/MAX4/DAD1ortholog, controls lateral bud outgrowth in rice / Plant J 51:1019~1029
Bemer, M. / 2012 / Dynamic regulation of Polycomb groub activity during plant development / Curr. Opin. Plant Biol 15:523~529
Chen, Y. / 2012 / Over-expression of OsPIN2 leads to increased tiller numbers, angle and shorter plant height through suppression of OsLAZY1 / Plant Biotechnol. J 10:139~149
Gynheung An / 2018 / Roles of Sugars in Controlling Flowering Time / Journal of Plant Biology(한국식물학회지) 61(3):121~130
Cho, L. H. / 2016 / Homodimerization of Ehd1 is required to induce flowering in rice / Plant Physiol 170:2159~2171
Bemer, M. / 2012 / Dynamic regulation of Polycomb groub activity during plant development / Curr. Opin. Plant Biol 15:523~529
Chen, Y. / 2012 / Over-expression of OsPIN2 leads to increased tiller numbers, angle and shorter plant height through suppression of OsLAZY1 / Plant Biotechnol. J 10:139~149
Gynheung An / 2018 / Roles of Sugars in Controlling Flowering Time / Journal of Plant Biology(한국식물학회지) 61(3):121~130
Cho, L. H. / 2016 / Homodimerization of Ehd1 is required to induce flowering in rice / Plant Physiol 170:2159~2171
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