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作物学报 ›› 2006, Vol. 32 ›› Issue (07): 1044-1048.

• 研究论文 • 上一篇    下一篇

高温胁迫对早稻根系质膜ATPase活性及NH4+吸收的影响

石庆华;李木英;许锦彪;谭雪明   

  1. 江西农业大学农学院/江西省作物生理生态与遗传育种重点实验室,江西南昌330045
  • 收稿日期:2005-08-15 修回日期:1900-01-01 出版日期:2006-07-12 网络出版日期:2006-07-12

Effects of High Temperature Stress on ATPase Activity of Plasma Membrane and NH4+ Absorption Rate in Roots of Early Rice

SHI Qing-Hua,LI Mu-Ying,XU Jing-Biao,TAN Xue-Ming   

  1. College of Agronomy, Jiangxi Agricultural University, Key Laboratory of Crop Physiology, Ecology and Genetic Breeding of Jiangxi Province, Nanchang 330045, Jiangxi China
  • Received:2005-08-15 Revised:1900-01-01 Published:2006-07-12 Published online:2006-07-12

摘要: 选用高温耐性品种农大228、082和高温敏感品种茉莉占、协青早B,比较研究了高温胁迫对根系质膜ATPase活性和NH4+吸收速率的影响。结果表明,高温胁迫下,农大228和082根系质膜H+-ATPase和Ca2+-ATPase活性均比对照提高,而茉莉占和协青早B分别比对照大幅度下降,品种间差异显著(Duncan’s法检验)。根系质膜蛋白含量在高温胁迫后均表现下降。082的NH4+吸收速率不受高温影响,热敏感型品种NH4+吸收速率受高温胁迫明显下降。

关键词: 早稻, 根系质膜, 高温胁迫, ATPase活性

Abstract:

Cultivars of early rice with heat resistance: Nongda 228 and 082, and those with heat sensitivity: Molizhan and Xeiqingzao B were used to study the ATPase activity of plasma membrane and NH4+ absorption rate in roots under high temperature stress. The results indicated that under high temperature stress, H+-ATPase and Ca2+-ATPase activities of plasma membrane were increased in roots of Nongda 228 and 082 while declined in roots of Molizhan and Xeiqingzao B, with significant differences between them by Duncan’s method test. The protein content in all cultivars declined under high temperature stress. The NH4+ absorption rate had no change in the cultivars with heat resistance but declined in the cultivars with heat sensitivity under high temperature.

Key words: Early rice, Plasma membrane of roots, High temperature stress, ATPase activity

中图分类号: 

  • S511
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