A gibberellin-stimulated transcript, OsGASR1, controls seedling growth and α-amylase expression in rice

被引：19
作者：
Lee, Sang-Choon [1 ,4 ,5 ]
Kim, Soo-Jin [1 ]
Han, Soon-Ki [1 ]
An, Gynheung [2 ,3 ]
Kim, Seong-Ryong [1 ]
机构：
[1] Sogang Univ, Dept Life Sci, Seoul 121742, South Korea
[2] Kyung Hee Univ, Crop Biotech Inst, Yongin 446701, South Korea
[3] Kyung Hee Univ, Dept Plant Mol Syst Biotechnol, Yongin 446701, South Korea
[4] Seoul Natl Univ, Coll Agr & Life Sci, Plant Genom & Breeding Inst, Dept Plant Sci, Seoul 151921, South Korea
[5] Seoul Natl Univ, Coll Agr & Life Sci, Res Inst Agr & Life Sci, Seoul 151921, South Korea
来源：
JOURNAL OF PLANT PHYSIOLOGY | 2017年 / 214卷
关键词：
T-DNA insertion mutant; DNA INSERTIONAL MUTAGENESIS; ORYZA-SATIVA L; T-DNA; ABIOTIC STRESS; RESPONSIVE GENE; IN-PLANTA; ARABIDOPSIS; PROTEIN; ACID; DEGRADATION;
D O I：
10.1016/j.jplph.2017.04.010
中图分类号：
Q94 [植物学];
学科分类号：
071001 ;
摘要：
From a T-DNA-tagging population in rice, we identified OsGASR1 (LOC_Os03g55290), a member of the GAST (gibberellin (GA)-Stimulated Transcript) family that is induced by salt stress and ABA treatment. This gene was highly expressed in the regions of cell proliferation and panicle development, as revealed by a GUS assay of the mutant line. In the osgasr1 mutants, the second leaf blades were much longer than those of the segregating wild type due to an increase in cell length. In addition, five alpha-amylase genes were up-regulated in the mutants, implying that OsGASR1 is a negative regulator of those genes. These results suggest that OsGASR1 plays important roles in seedling growth and alpha-amylase gene expression.
引用
收藏
页码：116 / 122
页数：7
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