Comparative Ecophysiological Study of Salt Stress for Wild and Cultivated Soybean Species from the Yellow River Delta, China

Osmotic and ionic stresses were the primary and instant damage produced by salt stress. They can also bring about other secondary stresses. Soybean is an important economic crop and the wild soybean aroused increasing attention for its excellent performance in salt resistance. For this reason, we co...

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Bibliographic Details
Published in:TheScientificWorld 2014-01, Vol.2014 (2014), p.1-13
Main Authors: Shao, Hongbo, Tang, Xiaoli, Chen, Peng, Zhou, Zhengda, Wu, Gang, Wang, Hongyan
Format: Article
Language:English
Subjects:
Abiotic stress
China
Crops
Environmental aspects
Genetic diversity
Genetically altered foods
Glycine max - drug effects
Glycine max - physiology
Health aspects
Homeostasis
Laboratories
Osmosis
Plasma
Rivers
Salinity
Salt
Salts
Science
Seedlings
Seedlings - drug effects
Seedlings - physiology
Signal transduction
Sodium chloride
Sodium Chloride - pharmacology
Soybean
Soybeans
Stress (Physiology)
Studies
Water content
Water potential
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Summary:Osmotic and ionic stresses were the primary and instant damage produced by salt stress. They can also bring about other secondary stresses. Soybean is an important economic crop and the wild soybean aroused increasing attention for its excellent performance in salt resistance. For this reason, we compared the different performances of Glycine max L. (ZH13) and Glycine soja L. (BB52) in both young and mature seedlings, hoping to clarify the specific reasons. Our research revealed that, compared to the cultivated soybean, the wild soybean was able to maintain higher water potential and relative water content (RWC), accumulate more amount of proline and glycine betaine, reduce the contents of Na+ and Cl− by faster efflux, and cut down the efflux of the K+ as well as keep higher K+/Na+ ratio. And what is more is that, almost all the excel behaviors became particularly obvious under higher NaCl concentration (300 mM). Therefore, according to all the detections and comparisons, we concluded that the wild soybean had different tolerance mechanisms and better salt resistance. It should be used as eminent germplasm resource to enhance the resistant ability of cultivated soybean or even other crops.
ISSN:2356-6140
1537-744X
1537-744X
DOI:10.1155/2014/651745