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12 results on '"Wei, Haimin"'

8. Research on the Marketalized Operation Model in the Field of Urban Infrastructure Construction in Western Cities of China

Author

Wei Haimin and Hu Zhen

Subjects
Government, Economic growth, Service level, Field (Bourdieu), media_common.quotation_subject, Urban infrastructure, Quality (business), Town and country planning, Business, China, Operation model, Environmental planning, media_common
Abstract

based on the practical situation of the westward of china, the author bring forward seven operation models of marketalized in the field of urban infrastructure construction, and analyses the different features of operation models and their applicable field. Hoping to give the guidance and reference of improving the quality and service level of western urban infrastructure construction of our country.

Published
2010

11. Melatonin improves K+ and Na+ homeostasis in rice under salt stress by mediated nitric oxide.

Author

Yan, Feiyu, Wei, Haimin, Li, Weiwei, Liu, Zhenghui, Tang, She, Chen, Lin, Ding, Chengqiang, Jiang, Yu, Ding, Yanfeng, and Li, Ganghua

Subjects
POLYAMINES, NITRIC oxide, UPLAND rice, NITRIC-oxide synthases, SOIL salinity, MELATONIN, RICE
Abstract

Rice (Oryza sativa L.) productivity is greatly affected by soil salinity and melatonin (MLT) has long been recognized as a positive molecule that can alleviate the damage caused by salt. Here, the role of nitric oxide (NO) in the regulation of salt tolerance by MLT was investigated in rice. MLT pretreatment increased the fresh and dry weight of rice seedlings under salt stress. Its beneficial effects include less relative electrolyte leakage (REL) and better K+/Na+ homeostasis. MLT increased the activity of nitric oxide synthase (NOS). The polyamines (PAs) content and the utilization of arginine were also increased, thereby increasing NO content in salt-stressed rice seedlings. Pharmacological approach showed that NO, as a necessary downstream signaling molecule, was involved in the regulation of MLT on the K+/Na+ homeostasis of rice. Under salt stress, MLT improved the H+-pumps activities in plasma membrane (PM) and vacuole membrane (VM) in roots, MLT also increased the ATP content of rice roots by increasing the NO content of rice. Thus, the efflux of Na+ and the influx of K+ were promoted. When endogenous NO was scavenged, the regulation of K+/Na+ homeostasis by MLT was blocked. Therefore, MLT mediated K+/Na+ homeostasis of rice under salt stress by mediating NO. • Melatonin increased NO content in rice under salt stress. • Melatonin increased the efflux of Na+ and the influx of K+ in rice roots. • NO was necessary signaling molecule for melatonin to regulate K+ and Na+ homeostasis of rice. • The function of NO regulated by melatonin was to enhance H+-pump activity. [ABSTRACT FROM AUTHOR]

Published
2020
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12. Melatonin improves K + and Na + homeostasis in rice under salt stress by mediated nitric oxide.

Author

Yan F, Wei H, Li W, Liu Z, Tang S, Chen L, Ding C, Jiang Y, Ding Y, and Li G

Subjects
Ions metabolism, Oryza metabolism, Plant Roots drug effects, Salinity, Salt Tolerance, Seedlings drug effects, Homeostasis physiology, Melatonin metabolism, Nitric Oxide metabolism, Oryza physiology, Potassium metabolism, Salt Stress physiology, Sodium metabolism
Abstract

Rice (Oryza sativa L.) productivity is greatly affected by soil salinity and melatonin (MLT) has long been recognized as a positive molecule that can alleviate the damage caused by salt. Here, the role of nitric oxide (NO) in the regulation of salt tolerance by MLT was investigated in rice. MLT pretreatment increased the fresh and dry weight of rice seedlings under salt stress. Its beneficial effects include less relative electrolyte leakage (REL) and better K + /Na + homeostasis. MLT increased the activity of nitric oxide synthase (NOS). The polyamines (PAs) content and the utilization of arginine were also increased, thereby increasing NO content in salt-stressed rice seedlings. Pharmacological approach showed that NO, as a necessary downstream signaling molecule, was involved in the regulation of MLT on the K + /Na + homeostasis of rice. Under salt stress, MLT improved the H + -pumps activities in plasma membrane (PM) and vacuole membrane (VM) in roots, MLT also increased the ATP content of rice roots by increasing the NO content of rice. Thus, the efflux of Na + and the influx of K + were promoted. When endogenous NO was scavenged, the regulation of K + /Na + homeostasis by MLT was blocked. Therefore, MLT mediated K + /Na + homeostasis of rice under salt stress by mediating NO., (Copyright © 2020. Published by Elsevier Inc.)

Published
2020
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