The Effect of Molybdenum on Drought Stress Response in Peach
- State Key Laboratory of Crop Biology, College of Horticulture Science and Engineering, Shandong Agricultural University, Tai’an 271018, China
Received date: 2018-06-19
Accepted date: 2018-11-16
Online published: 2018-12-07
Abstract
Peach (Amygdalus persica) seedlings were used to analyze the effect of ammonium molybdate on the expression of molybdenum cofactor sulfurase gene (LOS5/ABA3), ABA content and physiological indexes related to drought resistance under drought stress. Water, chlorophyll and proline contents of peach seedling leaves were significantly higher with ammonium molybdate, preferably 0.04%, than control treatment, and electrolyte leakage was lower. Under drought stress, the expression of LOS5/ABA3 in leaves treated with 0.04% ammonium molybdate was significantly increased and ABA content, water use efficiency, and net photosynthetic rate was higher than with control treatment. Transpiration rate was lower, antioxidant enzyme activity was higher, and malondialdehyde content was lower in leaves; the quality loss of leaves in vitro was reduced. Thus, ammonium molybdate treatment of peach seedlings can increase the content of ABA and proline, increase the activity of antioxidant enzymes, relieve cell membrane oxidation damage, decrease the rate of water loss of leaves, and alleviate drought stress damage by regulating the expression of drought- resistant genes, then increase the drought resistance of plants.
Key words： peach seedlings; ammonium molybdate; drought stress; LOS5/ABA3; drought resistance
Cite this article
Huaifeng Gao,Yafei Zhang,Guodong Wang,Xiwu Sun,Yue He,Futian Peng,Yuansong Xiao . The Effect of Molybdenum on Drought Stress Response in Peach[J]. Chinese Bulletin of Botany, 2019 , 54(2) : 227 -236 . DOI: 10.11983/CBB18142
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