您好，欢迎访问山东省农业科学院文献资源数据库平台

Moderate Salinity Stress Reduces Rice Grain Yield by Influencing Expression of Grain Number- and Grain Filling-Associated Genes

文献类型： 外文期刊

作者： Zheng, Chongke 1 ; Zhou, Guanhua 1 ; Zhang, Zhizhen 1 ; Li, Wen 1 ; Peng, Yongbin 1 ; Xie, Xianzhi 1 ;

作者机构： 1.Shandong Acad Agr Sci, Shandong Rice Res Inst, Shandong Rice Engn Technol Res Ctr, Jinan 250100, Peoples R China

2.Shandong Normal Univ, Coll Life Sci, Jinan 250014, Peoples R China

关键词： Rice; Salinity; Grain number; Grain weight; Yield-associated gene

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： Soil salinity is an environmental stress severely impacting on rice grain yield. However, limited information is available on how salinity affects expression levels of genes determining grain yield. In this study, we investigated agronomic traits associated with grain yield among threejaponicarice cultivars grown either under moderate salinity with an electrical conductivity of 4 dS/m or under non-saline conditions in a paddy field in Dongying, Shandong, China. Moderate salinity affected rice yield predominantly by reducing grain number and grain filling. We compared expression levels of genes determining grain number in young panicles (0.5-1 cm in length) of plants grown under salinity or non-saline conditions. Transcription ofLax panicle 1,Lax panicle 2,Ideal plant architecture(IPA1),Dense and erect panicle 1,Tawawa 1, andOsMADS1was significantly repressed, whereas that ofCytokinin oxidase/dehydrogenase,Grain number per panicle 1, andNarrow leaf 1was not significantly influenced by salinity. OsmicroRNA156, the posttranscriptional regulator ofIPA1, was induced by salinity in the panicle and seedlings and complemented the expression patterns ofIPA1. This result implied that the OsmicroRNA156-IPA1 pathway was involved in rice salinity responses. The grain filling-associated genesGrain incomplete filling 1,Grain incomplete filling 2, andNuclear factor Ywere down-regulated by salinity in the spikelet at 5 or 10 days after fertilization, which contributed to the salinity-triggered reduction in grain weight. These findings suggest some targets that may be utilized to improve the grain yield under salinity stress conditions via breeding and gene-pyramiding approaches.

  • 相关文献

[1]Moderate Salinity Stress Reduces Rice Grain Yield by Influencing Expression of Grain Number- and Grain Filling-Associated Genes. Zheng, Chongke,Zhou, Guanhua,Zhang, Zhizhen,Li, Wen,Peng, Yongbin,Xie, Xianzhi,Zhang, Zhizhen.

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：山东省农业科学院文献资源数据库平台

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