Response of root morphology, physiology and endogenous hormones in maize (Zea mays L.) to potassium deficiency

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	Response of root morphology, physiology and endogenous hormones in maize (Zea mays L.) to potassium deficiency
其他题名	Response of root morphology, physiology and endogenous hormones in maize (Zea mays L.) to potassium deficiency
	Zhao Xinhue 1; Yu Haiqiu 1; Wen Jing 1; Wang Xiaoguang 1; Du Qi 1; Wang Jing 1; Wang Qiao 1
	2016
发表期刊	JOURNAL OF INTEGRATIVE AGRICULTURE
ISSN	2095-3119
卷号	15 期号:4 页码:785-794
摘要	Potassium (K) deficiency is one of the major abiotic stresses which has drastically influenced maize growth and yield around the world. However, the physiological mechanism of K deficiency tolerance is not yet fully understood. To identify the differences of root morphology, physiology and endogenous hormones at different growing stages, two maize inbred lines 90-21-3 (tolerance to K deficiency) and D937 (sensitive to K deficiency) were cultivated in the long-term K fertilizer experimental pool under high potassium (+K) and low potassium (K) treatments. The results indicated that the root length, volume and surface area of 90-21-3 were significantly higher than those of D937 under K treatment at different growing stages. It was noteworthy that the lateral roots of 90-21-3 were dramatically higher than those of D937 at tasselling and flowering stage under K treatment. Meanwhile, the values of superoxide dismutase (SOD) and oxidizing force of 90-21-3 were apparently higher than those of D937, whereas malondialdehyde (MDA) content of D937 was obviously increased. Compared with +K treatment, the indole-3-acetic acid (IAA) content of 90-21-3 was largely increased under K treatment, whereas it was sharply decreased in D937. On the contrary, abscisic acid (ABA) content of 90-21-3 was slightly increased, but that of D937 was significantly increased. The zeatin riboside (ZR) content of 90-21-3 was significantly decreased, while that of D937 was relatively increased. These results indicated that the endogenous hormones were stimulated in 90-21-3 to adjust lateral root development and to maintain the physiology function thereby alleviating K deficiency.
其他摘要	Potassium (K) deficiency is one of the major abiotic stresses which has drastically influenced maize growth and yield around the world. However, the physiological mechanism of K deficiency tolerance is not yet fully understood. To identify the differences of root morphology, physiology and endogenous hormones at different growing stages, two maize inbred lines 90-21-3 (tolerance to K deficiency) and D937 (sensitive to K deficiency) were cultivated in the long-term K fertilizer experimental pool under high potassium (+K) and low potassium (–K) treatments. The results indicated that the root length, volume and surface area of 90-21-3 were significantly higher than those of D937 under –K treatment at different growing stages. It was noteworthy that the lateral roots of 90-21-3 were dramatically higher than those of D937 at tasselling and flowering stage under –K treatment. Meanwhile, the values of superoxide dismutase (SOD) and oxidizing force of 90-21-3 were apparently higher than those of D937, whereas malondialdehyde (MDA) content of D937 was obviously increased. Compared with +K treatment, the indole-3-acetic acid (IAA) content of 90-21-3 was largely increased under –K treatment, whereas it was sharply decreased in D937. On the contrary, abscisic acid (ABA) content of 90-21-3 was slightly increased, but that of D937 was significantly increased. The zeatin riboside (ZR) content of 90-21-3 was significantly decreased, while that of D937 was relatively increased. These results indicated that the endogenous hormones were stimulated in 90-21-3 to adjust lateral root development and to maintain the physiology function thereby alleviating K deficiency.
关键词	LOW PHOSPHORUS AVAILABILITY ARABIDOPSIS-THALIANA MAGNESIUM-DEFICIENCY OXIDATIVE STRESS HIGHER-PLANTS BEAN-PLANTS ARCHITECTURE EFFICIENCY TOLERANCE GROWTH potassium deficiency maize root morphology physiological variation endogenous hormone
收录类别	CSCD
语种	英语
资助项目	[Program for Liaoning Excellent Talents in University, China] ; [National Natural Science Foundation of China] ; [Tianzhu Mountian Scholars Support Plan of Shenyang Agricultural University, China]
CSCD记录号	CSCD:5686293
引用统计	被引频次：5[CSCD] [CSCD记录]
文献类型	期刊论文
条目标识符	http://ir.imr.ac.cn/handle/321006/142640
专题	中国科学院金属研究所
作者单位	1.中国科学院金属研究所 2.中山大学
推荐引用方式 GB/T 7714	Zhao Xinhue,Yu Haiqiu,Wen Jing,et al. Response of root morphology, physiology and endogenous hormones in maize (Zea mays L.) to potassium deficiency[J]. JOURNAL OF INTEGRATIVE AGRICULTURE,2016,15(4):785-794.
APA	Zhao Xinhue.,Yu Haiqiu.,Wen Jing.,Wang Xiaoguang.,Du Qi.,...&Wang Qiao.(2016).Response of root morphology, physiology and endogenous hormones in maize (Zea mays L.) to potassium deficiency.JOURNAL OF INTEGRATIVE AGRICULTURE,15(4),785-794.
MLA	Zhao Xinhue,et al."Response of root morphology, physiology and endogenous hormones in maize (Zea mays L.) to potassium deficiency".JOURNAL OF INTEGRATIVE AGRICULTURE 15.4(2016):785-794.