ROLE OF NITRATE NUTRITION IN ALLEVIATION OF THE ADVERSE EFFECTS OF DROUGHT STRESS ON MAIZE CULTIVARS: BIOMASS PRODUCTION AND ANTIOXIDATIVE CAPACITY

ISWC OpenIR > 水保所知识产出(1956---)

	ROLE OF NITRATE NUTRITION IN ALLEVIATION OF THE ADVERSE EFFECTS OF DROUGHT STRESS ON MAIZE CULTIVARS: BIOMASS PRODUCTION AND ANTIOXIDATIVE CAPACITY
	Zhang Lixin; Wang Kai; Zhang Xifeng; Zhang, LX
	2011
发表期刊	PAKISTAN JOURNAL OF BOTANY
卷号	43 期号:6 页码:2869-2874
摘要	Optimal nitrogen (N) nutrition has been shown to alleviate the negative effects of drought stress (DS) on plants. The mechanisms of beneficial effect of nitrogen form are not conclusive. In this study, the effects of different ratios of nitrate (NO3-) to ammonium (NH4+) nutrition on the growth and oxidative damage of two maize cultivar i.e. Zhengdan 958 (ZD958) and Jundan 20 (JD20) were investigated under DS and non-DS in nutrient solution. The activities of superoxide dismutase (SOD) and catalase (CAT) increased, while that of peroxidase (POD) remained unchanged in ZD958 with supplies of NO3-: NH4+ ratios of either 100:0 or 50:50, while in NO3-: NH4+ ratio of 0:100 in ZD958 and all NO3-: NH4+ ratios in JD20 all the enzymes showed decreased activities compared to control. Furthermore, DS decreased biomass production, whereas increased the contents of superoxide radical (O-2(.-)) and hydrogen peroxide (H2O2), along with an enhanced accumulation of malondialdehyde (MDA) in the leaves of both cultivars. The above effects were greater in JD20 than those in ZD958. An increased ratio of NO3-: NH4+ in culture solution increased the activities of SOD, POD and CAT while decreased the production of O-2(.-) and H2O2, thereby diminishing MDA accumulation, and increasing biomass production of drought-stressed plants of both cultivars. The above responses were pronounced in ZD958 than those in JD20. This study demonstrated that increased NO3--nutrition played a favored anti-oxidative metabolic role, as compared with NH4+-nutrition, in the plants thereby increasing tolerance to DS.
关键词	Rice Oryza-sativa Water-stress Lipid-peroxidation L. Ammonium Photosynthesis Tolerance Seedlings Growth Signal
收录类别	SCI
语种	英语
文献类型	期刊论文
条目标识符	sbir.nwafu.edu.cn/handle/361005/4663
专题	水保所知识产出(1956---)
通讯作者	Zhang, LX
推荐引用方式 GB/T 7714	Zhang Lixin,Wang Kai,Zhang Xifeng,et al. ROLE OF NITRATE NUTRITION IN ALLEVIATION OF THE ADVERSE EFFECTS OF DROUGHT STRESS ON MAIZE CULTIVARS: BIOMASS PRODUCTION AND ANTIOXIDATIVE CAPACITY[J]. PAKISTAN JOURNAL OF BOTANY,2011,43(6):2869-2874.
APA	Zhang Lixin,Wang Kai,Zhang Xifeng,&Zhang, LX.(2011).ROLE OF NITRATE NUTRITION IN ALLEVIATION OF THE ADVERSE EFFECTS OF DROUGHT STRESS ON MAIZE CULTIVARS: BIOMASS PRODUCTION AND ANTIOXIDATIVE CAPACITY.PAKISTAN JOURNAL OF BOTANY,43(6),2869-2874.
MLA	Zhang Lixin,et al."ROLE OF NITRATE NUTRITION IN ALLEVIATION OF THE ADVERSE EFFECTS OF DROUGHT STRESS ON MAIZE CULTIVARS: BIOMASS PRODUCTION AND ANTIOXIDATIVE CAPACITY".PAKISTAN JOURNAL OF BOTANY 43.6(2011):2869-2874.