中国农业科学院农业信息研究所 中国农学会
Agricultural Information Institute of CAAS China Association of Agricultural Science Societies
En
Ch
中国农业科学院农业信息研究所 中国农学会 主办

AI检索

订阅

返回顶部
当前位置: 首页 > 文章 > Calcium Signaling is Involved in Negative Phototropism of Rice Seminal Roots 水稻科学(英文版) 2014,21 (1)
Position: Home > Articles > Calcium Signaling is Involved in Negative Phototropism of Rice Seminal Roots Rice Science 2014,21 (1)

Calcium Signaling is Involved in Negative Phototropism of Rice Seminal Roots

作  者：
Juan Chen;Yiwei Mo;Huawei X
单  位：
Institute of South Subtropical Crop Research Institute, Chinese Academy of Tropical Agricultural Science, Zhanjiang 524091, China;Hubei Key Laboratory of Economic Forest Germplasm Improvement and Resources Comprehensive Utilization, College of Chemistry and Life Science, Huanggang Normal University, Huanggang 438000, China;College of Agriculture, Henan University of Science and Technology, Luoyang 471003, Chin;College of Life Science, Shaoxing University, Shaoxing 312000, China
关键词：
mol;negative phototropism;calcium signaling;100;verapamil;lacl
摘  要：
Calcium ions (Ca2+) act as an intracellular second messenger and affect nearly all aspects of cellular life. They are functioned by interacting with polar auxin transport, and the negative phototropism of plant roots is caused by the transport of auxin from the irradiated side to the shaded side of the roots. To clarify the role of calcium signaling in the modulation of rice root negative phototropism, as well as the relationship between polar auxin transport and calcium signaling, calcium signaling reagents were used to treat rice seminal roots which were cultivated in hydroculture and unilaterally illuminated at an intensity of 100-200 mu mol/(m(2).s) for 24 h. Negative phototropism curvature and growth rate of rice roots were both promoted by exogenous CaCl2 lower than 100 mu mol/L, but inhibited by calcium channel blockers (verapamil and LaCl3), calcineurin inhibitor (chlorpromazine, CPZ), and polar auxin transport inhibitor (N-1-naphthylphthalamic acid, NPA). Roots stopped growing and negative phototropism disappeared when the concentrations increased to 100 mu mol/L verapamil, 12.500 mu mol/L LaCl3, 60 mu mol/L CPZ, and 6 ae mol/L NPA. Moreover, 100 mu mol/L CaCl2 could relieve the inhibition of LaCl3, verapamil and NPA. The enhanced negative phototropism curvature was caused by the transportation of more auxin from the irradiated side to the shaded side in the presence of exogenous Ca2+. Calcium signaling plays a key role as a second messenger in the process of light signal regulation of rice root growth and negative phototropism.

相似文章

导出引用
计量
文章访问数: 12
HTML全文浏览量: 0
PDF下载量: 0

所属期刊

推荐期刊

友情链接Friendly link
农业信息研究所Agricultural information institute 农业智能知识服务平台Agricultural intelligent knowledge service platform 农业学术服务平台Agricultural Knowledge Service System 中国知网CNKI 维普网VIP 万方WANFANG DATA
联系我们Contact us

电话Tell：010-82109652-808

邮箱E-mail：agrijournal@caas.cn

服务Service
关于我们About us 意见建议Opinions and suggest
版权说明Copyright
单位：中国农业科学院农业信息研究所 中国农学会 © 2017中国农业科学院农业信息研究所 ICP备案号：京ICP备09089781号-46