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Version 3.21
Publication Type J
Authors Liu, A; Hu, ZR; Bi, AY; Fan, JB; Gitau, MM; Amombo, E; Chen, L; Fu, JM
Author Full Name Liu, Ao; Hu, Zhengrong; Bi, Aoyue; Fan, Jibiao; Gitau, Margaret Mukami; Amombo, Erick; Chen, Liang; Fu, Jinmin
Title Photosynthesis, antioxidant system and gene expression of bermudagrass in response to low temperature and salt stress
Language English
Document Type Article
Author Keywords Cynodon dactylon; Cold stress; Salt stress; Photosystem II; Antioxidant defense systems; Gene expression
Abstract There is widespread distribution of salinized lands in northern China. Harnessing such land is essential to environmental health. Bermudagrass [Cynodon dactylon (L.) Pers.] has the potential to improve the salinized lands. However, low temperature remarkably limits the growth of bermudagrass in winter. Currently, there is no information about the interaction of cold and salt in this plant. Hence, the objectives of this study were to figure out the effects of combined cold and salinity stress on bermudagrass. In this study, 4 A degrees C and 200 mM salt solution was used as cold and salt treatments respectively while 4 A degrees C along with 200 mM salt solution were applied as combined stress. After 5 days treatment, bermudagrass displayed a dramatic decline in the turf quality and chlorophyll content, but higher malonaldehyde, electrolyte leakage, hydrogen peroxide content, antioxidant enzyme activity in the combined stress regime as compared to cold or salt treated alone. Analysis of chlorophyll a revealed that the combined stress aggravated stress-induced inhibition of photosystem II. In addition, the expressions of stress-related genes were up-regulated with a lower expression level when cold and salt applied together. In summary, the grass exposed to combined stress presented a relatively lower stress tolerance and suffered a more severe damage than grass grown in the other regimes. These findings are crucial for elucidating the molecular mechanisms of cold and salt combined stress in bermudagrass, and provide information for breeding programs to select and develop bermudagrass cultivars that are suitable for improvement of the northern China salinized land.
Author Address [Liu, Ao; Hu, Zhengrong; Bi, Aoyue; Fan, Jibiao; Gitau, Margaret Mukami; Amombo, Erick; Chen, Liang; Fu, Jinmin] Chinese Acad Sci, Key Lab Plant Germplasm Enhancement & Specialty A, Wuhan 430074, Hubei, Peoples R China; [Liu, Ao; Hu, Zhengrong; Bi, Aoyue; Fan, Jibiao; Chen, Liang] Univ Chinese Acad Sci, 19 Yuquan Rd, Beijing 100049, Peoples R China
Reprint Address Chen, L; Fu, JM (reprint author), Chinese Acad Sci, Key Lab Plant Germplasm Enhancement & Specialty A, Wuhan 430074, Hubei, Peoples R China.; Chen, L (reprint author), Univ Chinese Acad Sci, 19 Yuquan Rd, Beijing 100049, Peoples R China.
E-mail Address Chenliang1034@126.com; jfu@wbgcas.cn
Funding Agency and Grant Number China National Science Foundation (NSFC) [31401915, 31272194]; China-Africa Center for Research and Education [SAJC201325]; Hubei Province National Science Foundation Sciences [ZRY1326]; CAS Key Laboratory of Plant Germplasm Enhancement and Specialty Agriculture [Y452341X01]
Funding Text This work was supported by the China National Science Foundation (NSFC) (Grant Nos. 31401915 and 31272194), China-Africa Center for Research and Education (Grant No. SAJC201325), the Hubei Province National Science Foundation Sciences (Grant No. ZRY1326) and the outstanding young talent program of CAS Key Laboratory of Plant Germplasm Enhancement and Specialty Agriculture (Grant No. Y452341X01).
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Cited Reference Count 71
Times Cited 2
Total Times Cited Count (WoS, BCI, and CSCD) 2
Publisher SPRINGER
Publisher City DORDRECHT
ISSN 0963-9292
29-Character Source Abbreviation ECOTOXICOLOGY
ISO Source Abbreviation Ecotoxicology
Publication Date OCT
Year Published 2016
Volume 25
Issue 8
Beginning Page 1445
Ending Page 1457
Digital Object Identifier (DOI) 10.1007/s10646-016-1696-9
Page Count 13
Web of Science Category Ecology; Environmental Sciences; Toxicology
Subject Category Environmental Sciences & Ecology; Toxicology
Document Delivery Number EA6BU
Unique Article Identifier WOS:000386710800001
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