您好，欢迎访问中国农业科学院 机构知识库！

全部

  • 全部
  • 标题
  • 学者
  • 机构
  • 关键词

A 2-Mb Chromosome Inversion Interrupted Transcription of LAX2-4 and Generated Pleiotropic Phenotypes in Rice

文献类型： 外文期刊

作者： Dai, Dongqing 1 ; Chen, Junyu 1 ; Du, Chengxing 1 ; Liang, Minmin 1 ; Wu, Mingyue 1 ; Mou, Tongmin 3 ; Zhang, Huali 1 ; M 1 ;

作者机构： 1.China Natl Rice Res Inst, State Key Lab Rice Biol, Hangzhou 310006, Peoples R China

2.China Natl Rice Res Inst, Chinese Natl Ctr Rice Improvement, Hangzhou 310006, Peoples R China

3.Huazhong Agr Univ, Natl Key Lab Crop Genet Improvement, Wuhan, Peoples R China

4.Huazhong Agr Univ, Natl Ctr Plant Gene Res Wuhan, Wuhan, Peoples R China

关键词： Rice; Lax; Lateral spikelet; Sterile lemma; INV

期刊名称：JOURNAL OF PLANT GROWTH REGULATION （ 影响因子：4.169； 五年影响因子：4.038 ）

ISSN： 0721-7595

年卷期：

页码：

收录情况： SCI

摘要： The number of grains per panicle is one of the most important factors of rice yield and determinated by branch and spikelet number. Genetic and molecular mechanisms responsible for panicle branching and spikelet development remain unclear in rice. Here, we report a mutant lax2-4 mainly showing lax panicle, longer grains, a little abnormal spikelet, lower setting rate and abaxial curled leaf. Genetic analysis indicated that the defective panicle phenotype of lax2-4 was controlled by single recessive gene. Further mapping and re-sequencing revealed that the fourth exon of LAX2 was lost caused by an approximately 2-Mb INV in lax2-4, thus LAX2-4 could be a new allele of LAX2. Overexpression assays showed that lax panicle was rescued in correspondence with the gradually increased expression level of wild-type LAX2-4 transcript. CRISPR/Cas9-mediated knockout of the fourth exon verified that LAX2-4 participates the regulation of sterile lemma and lemma development in rice. LAX2-4 could interact with an E-class gene, OsMADS1, and the fourth exon was necessary for its function. Collectively, we proposed that LAX2-4 plays a dual role in lateral spikelet and lemma development.

  • 相关文献
作者其他论文 更多>>
置顶
购物车
反馈

© 京ICP备09089781号-29 主办单位：中国农业科学院

学术资源： 中国农业科学院 农业专业知识服务系统 农科联盟资源共建共享平台 中国农业科技文献与信息服务平台 中国农业期刊集成服务平台