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《ACTA BOTANICA BOREALI-OCCIDENTALIA SINICA》 1996-03
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INVOLVEMENT OF CALCIUM AND CALMODULIN IN THE REGULATION OF DEOUGHT RESISTANCE IN ZEA MAYS SEEDLINGS

Gong Ming;Du Chaokun and Xu Wenzhong (Department of Biology, Yunnan Normal Univsity,Kunming 650092)  
The effects of Ca2+ and calmodulin treatments on the drought resistance of maizeseedlings were studied in this paper. Soaking maize seeds with 20 mmol/L CaCl2 solutionsignificantly increased their germination percentage, improved the growth of theseedlings,alliviated the membrane damage of maize embryonic roots,enhanced their vitality and the survival percentage of maize seedlings under drought stress. However,thiscalcium-enhanced drought resistance could be weakened by the treatment of calmodulininhibitors CPZ. In addition, CaCl2 treatment also raised the proline content of theseedlings under drought stress,which could be one of the physiological bases for the enhancement of drought resistance by CaCl2 in the maize seedlings.
【Fund】: 国家自然科学基金 云南省应用基础研究基金
【CateGory Index】: S513.01
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