Changes of Oxidative Stress and Soluble Sugar in Anthers Involve in Rice Pollen Abortion Under Drought Stress

doi:10.1016/S1671-2927(11)60089-8

摘要/Abstract

摘要： Two rice maintaining lines with different drought tolerances, viz., Jin 23B (tolerant) and Zhenshan 97B (sensitive), wereused to study the oxidative stress and soluble sugar in rice anthers and pollen viability under drought stress duringflowering stage. Higher antioxidant enzyme activities and lower malonaldehyde (MDA) content in rice anthers wereobserved in Jin 23B than in Zhenshan 97B under drought stress. Further, a great increase in the content of soluble sugarin rice anthers of Jin 23B was observed across the whole drought exposure, while Zhenshan 97B showed significantdecrease in soluble sugar during 9-12 d after drought stress (DADS). Accordingly, a marked decline of pollen fertility andactivity, pollen numbers in an anther and pollen numbers on a stigma was observed in Zhenshan 97B, whereas littledifference was found in Jin 23B. Thus, we suggest that pollen abortion caused by drought stress may be related with thereciprocity between oxidative stress and soluble sugar content in rice anthers.

关键词:

drought stress, oxidative stress, soluble sugar, pollen abortion, rice anthers, flowering stage

Abstract: Two rice maintaining lines with different drought tolerances, viz., Jin 23B (tolerant) and Zhenshan 97B (sensitive), wereused to study the oxidative stress and soluble sugar in rice anthers and pollen viability under drought stress duringflowering stage. Higher antioxidant enzyme activities and lower malonaldehyde (MDA) content in rice anthers wereobserved in Jin 23B than in Zhenshan 97B under drought stress. Further, a great increase in the content of soluble sugarin rice anthers of Jin 23B was observed across the whole drought exposure, while Zhenshan 97B showed significantdecrease in soluble sugar during 9-12 d after drought stress (DADS). Accordingly, a marked decline of pollen fertility andactivity, pollen numbers in an anther and pollen numbers on a stigma was observed in Zhenshan 97B, whereas littledifference was found in Jin 23B. Thus, we suggest that pollen abortion caused by drought stress may be related with thereciprocity between oxidative stress and soluble sugar content in rice anthers.

Key words: drought stress, oxidative stress, soluble sugar, pollen abortion, rice anthers, flowering stage

FU Guan-fu*, SONG Jian*, XIONG Jie, LI Yu-rong, CHEN Hui-zhe, LE Ming-kai and TAO Long-xing. Changes of Oxidative Stress and Soluble Sugar in Anthers Involve in Rice Pollen Abortion Under Drought Stress[J]. Journal of Integrative Agriculture, 2011, 10(7): 1016-1025.

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