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| DOI: | 10.1016/j.envexpbot.2015.02.003 |
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| Web URL(s): | http://www.sciencedirect.com/science/article/pii/S0098847215000222
Last checked: 04/02/2015
Access conditions: Item is within a limited-access website |
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| Publication Type:
| Refereed |
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| Author(s): | Yu, Jingjin;
Sun, Lihong;
Fan, Ningli;
Yang, Zhimin;
Huang, Bingru |
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| Author Affiliation: | Yu, Sun, Fan, and Yang: College of Agro-Grassland Science, Nanjing Agricultural University, Nanjing, PR China; Huang: Department of Plant Biology and Pathology, Rutgers University, New Brunswick, NJ |
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| Title: | Physiological factors involved in positive effects of elevated carbon dioxide concentration on Bermudagrass tolerance to salinity stress |
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| Source: | Environmental and Experimental Botany. Vol. 115, July 2015, p. 20-27. |
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| Publishing Information: | Elsevier |
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| # of Pages: | 8 |
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| Keywords: | TIC Keywords: Air pollution; Carbon dioxide; Irrigation water; Non-potable water; Physiological responses; Quality evaluation; Saline water; Salinity stress
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| Abstract/Contents: | "Salinity stress due to increased use of non-potable water sources for irrigation imposes major limitations on plant growth in salt-affected soils. However, rising atmospheric CO2 concentration may counteract the negative effects of salinity stress. The objective of this study was to determine whether elevated CO2 mitigates salinity stress by influencing physiological activities and/or ion (Na+ and K+) balance in Bermudagrass (Cynodon dactylon cv. 'Tifway'). Plants were exposed to either ambient CO2 concentration (400 μ mol mol-1) or elevated CO2 concentration (800 μ mol mol-1) and maintained well-watered (control) with fresh water or subjected to salinity stress by irrigating plants with NaCl solution (200 mM). Salinity stress caused reduction in turf quality (TQ), leaf relative water content (RWC), leaf net photosynthetic rate (Pn), transpiration rate, stomatal conductance, and cellular membrane stability. Elevated CO2 concentration alleviated the depression of those physiological parameters and promoted osmotic adjustment through accumulation of soluble sugars, proline, and glycine betaine (GB) under salinity stress, but had no significant effects on the ratio of Na+ to K+. Our results demonstrated that elevated CO2 concentration was effective in alleviating physiological damages of salinity stress in Bermudagrass, suggesting that C4 grasses may benefit from the rising atmospheric CO2 concentration associated with global climate changes. The positive physiological effects of elevated CO2, as manifested by improved TQ, RWC, Pn and cell membrane stability could be related to the maintenance of cellular hydration associated with osmotic adjustment due to the accumulation of soluble sugars, proline and GB, and the suppression of Na+ accumulation independent of changes in K+ accumulation." |
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| Language: | English |
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| References: | 48 |
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| Note: | Graphs |
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| ASA/CSSA/SSSA Citation (Crop Science-Like - may be incomplete):
Yu, J., L. Sun, N. Fan, Z. Yang, and B. Huang. 2015. Physiological factors involved in positive effects of elevated carbon dioxide concentration on Bermudagrass tolerance to salinity stress. Environ. Exp. Bot. 115:p. 20-27. |
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| DOI: 10.1016/j.envexpbot.2015.02.003 |
| Web URL(s):
http://www.sciencedirect.com/science/article/pii/S0098847215000222
Last checked: 04/02/2015
Access conditions: Item is within a limited-access website |
| 
MSU catalog number: b4885055 |
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