Details

Autor(en) / Beteiligte

• FU Guan-fu, SONG Jian, XIONG Jie, LI Yu-rong, CHEN Hui-zhe, LE Ming-kai and TAO Long-xing (College of Agronomy, Agricultural University of Hebei/Hebei Sub-Center of Chinese National Maize Improvement Center/Northern China Key Laboratory for Crop Germplasm Resources, Ministry of Education)

Titel

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

Ist Teil von

• Journal of Integrative Agriculture, 2011-07, Vol.10 (7), p.1016-1025

Ort / Verlag

Science Press

Erscheinungsjahr

2011

Beschreibungen/Notizen

• 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.