Full TGIF Record # 293659
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DOI:10.1016/j.scienta.2017.10.004
Web URL(s):http://www.sciencedirect.com/science/article/pii/S0304423817306088
    Last checked: 12/12/2017
    Access conditions: Item is within a limited-access website
Publication Type:
i
Refereed
Author(s):Chen, Zhifei; Wang, Zhi; Yang, Yungui; Li, Min; Xu, Bingcheng
Author Affiliation:Chen: College of Animal Science and Technology, Northwest A&F University, Yangling, Shaanxi, People's Republic of China and State Key Laboratory of Soil Erosion and Dryland Farming on the Loess Plateau, Northwest A&F University, Yangling, Shaanxi, People's Republic of China; Wang and Xu: State Key Laboratory of Soil Erosion and Dryland Farming on the Loess Plateau, Northwest A&F University, Yangling, Shaanxi, People's Republic of China and Institute of Soil and Water Conservation, Chinese Academy of Sciences and Ministry of Water Resources, Yangling, Shaanxi, People's Republic of China; Yang: College of Animal Science and Technology, Northwest A&F University, Yangling, Shaanxi, People's Republic of China; Li: State Key Laboratory of Soil Erosion and Dryland Farming on the Loess Plateau, Northwest A&F University, Yangling, Shaanxi, People's Republic of China
Title:Abscisic acid and brassinolide combined application synergistically enhances drought tolerance and photosynthesis of tall fescue under water stress
Source:Scientia Horticulturae. Vol. 228, January 26 2018, p. 1-9.
# of Pages:9
Publishing Information:Amsterdam, Elsevier
Keywords:TIC Keywords: Abscisic acid; Brassinolide; Chlorophyll content; Combination treatments; Drought resistance; Festuca arundinacea; Photosynthetic capacity; Photosynthetic rate; Physiological processes; Relative water content; Stomatal conductance; Transpiration; Water stress
Abstract/Contents:"Tall fescue (Festuca arundinacea Schreb.) is a widely used cool-season turfgrass, and its growth is mainly limited by water deficit. Abscisic acid (ABA) and brassinolide (BR) are two important stress hormones regulating plant physiological processes and growth under water deficit. To investigate effects of exogenous ABA and BR on physiological and photosynthetic performance of tall fescue under water stress conditions, ABA (10 and 20 mg L-1) and BR (0.4 and 0.8 mg L-1) were applied individually and in combination (0.4 mg L-1 BR and 10 mg L-1 ABA) under three soil water regimes [75 ± 5% FC (HW), 50 ± 5% FC (MW) and 25 ± 5% FC (LW)] in the greenhouse. Results revealed that ABA and BR application markedly decreased the relative conductivity and malondialdehyde, notably increased leaf relative water content, antioxidant enzyme activity and proline content under water stress. ABA plus BR application was equally effective in improving the activities of antioxidant enzyme as ABA at 20 mg L-1. ABA application reduced stomatal conductance and decreased both transpiration and net photosynthetic rate (Pn), while BR application significantly increased Pn and water use efficiency (WUE) by enhancing chlorophyll content. The ABA and BR combination application showed higher Pn and WUE as well as BR single application. It indicated that ABA and BR combination application increased photosynthetic capacity, and reduced the effect on photosynthetic loss caused by ABA under water stress. All these confirmed that ABA plus BR application exhibited a synergistic interaction on enhancing drought tolerance and photosynthesis of tall fescue under water stress."
Language:English
References:54
Note:Tables
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ASA/CSSA/SSSA Citation (Crop Science-Like - may be incomplete):
Chen, Z., Z. Wang, Y. Yang, M. Li, and B. Xu. 2018. Abscisic acid and brassinolide combined application synergistically enhances drought tolerance and photosynthesis of tall fescue under water stress. Scientia Horticulturae. 228:p. 1-9.
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DOI: 10.1016/j.scienta.2017.10.004
Web URL(s):
http://www.sciencedirect.com/science/article/pii/S0304423817306088
    Last checked: 12/12/2017
    Access conditions: Item is within a limited-access website
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