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Response of root morphology, physiology and endogenous hormones in maize (Zea mays L.) to potassium deficiency
Alternative TitleResponse of root morphology, physiology and endogenous hormones in maize (Zea mays L.) to potassium deficiency
Zhao Xinhue1; Yu Haiqiu1; Wen Jing1; Wang Xiaoguang1; Du Qi1; Wang Jing1; Wang Qiao1
2016
Source PublicationJOURNAL OF INTEGRATIVE AGRICULTURE
ISSN2095-3119
Volume15Issue:4Pages:785-794
AbstractPotassium (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.
Other AbstractPotassium (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.
KeywordLOW 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
Indexed ByCSCD
Language英语
Funding Project[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 IDCSCD:5686293
Citation statistics
Document Type期刊论文
Identifierhttp://ir.imr.ac.cn/handle/321006/142640
Collection中国科学院金属研究所
Affiliation1.中国科学院金属研究所
2.中山大学
Recommended Citation
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.
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