Full TGIF Record # 285598
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DOI:10.17660/eJHS.2017/82.2.4
Web URL(s):http://www.pubhort.org/ejhs/82/2/4/82_2_4.pdf
    Last checked: 06/16/2017
    Requires: PDF Reader
Publication Type:
i
Report
Author(s):Xu, Lixin; Li, Xiaoshuai; Han, Liebao; Li, Deying; Song, Guilong
Author Affiliation:Xu, Xiaoshuai Li, Han, and Song: Institute of Turfgrass Science, Beijing Forestry University, Beijing, China; Deying Li: North Dakota State University, Fargo, North Dakota
Title:Epichloe endophyte infection improved drought and heat tolerance of tall fescue through altered antioxidant enzyme activity
Source:European Journal of Horticultural Science. Vol. 82, No. 2, 2017, p. 90-97.
Publishing Information:Stuttgart, Germany: Eugen Ulmer KG
# of Pages:8
Keywords:TIC Keywords: Drought resistance; Endophyte-infected plants; Epichloe; Evaluations; Festuca arundinacea; Heat resistance
Abstract/Contents:"Background of the study: Epichloe species are fungal endophytes of many cool season grass species. The Epichloe-tall fescue association is generally known to confer drought tolerance of tall fescue although the effect varied depending a lot of factors. Besides, few studies are focused on the effect of fungal endophyte on heat tolerance of tall fescue. Objectives: This study was to investigate the effect of fungal endophyte on drought and heat tolerance of tall fescue. Methods: In this study, endophyte infected (E+) and non-infected (E-) tall fescue plants were exposed to two separate experiments, drought tolerance experiment and heat tolerance experiment. Physiological parameters and antioxidant enzyme activity were measured. Results: Compared with E- plants, lower levels of electrolyte leakage, malondialdehyde content, and hydrogen peroxide (H2O2) content were observed in E+ plants during drought, re-watering and heat stress treatment. Lower level of superoxide (O2-) content was also observed in E+ plants upon re-watering. In addition, endophyte infection promoted higher relative water content and higher superoxide dismutase (SOD) and ascorbate peroxidase (APX) activity at the end of drought treatment. E+ plants had higher levels of catalase (CAT), guaiacol peroxidase (POD) and APX activity than E- plants by the end of heat treatment. Conclusions: Our results support a protective role of the endophyte in conferring drought and heat tolerance of tall fescue. E+ plants appear to reduce ROS (reactive oxygen species, e.g., O2- and H2O2) production in part by maintaining higher enzyme activity of SOD and APX under drought and CAT, POD and APX activity under heat stressed conditions."
Language:English
References:47
Note:Summary appears as abstract
Includes sidebar, "Significance of this study", p. 90
Graphs
ASA/CSSA/SSSA Citation (Crop Science-Like - may be incomplete):
Xu, L., X. Li, L. Han, D. Li, and G. Song. 2017. Epichloe endophyte infection improved drought and heat tolerance of tall fescue through altered antioxidant enzyme activity. European Journal of Horticultural Science. 82(2):p. 90-97.
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DOI: 10.17660/eJHS.2017/82.2.4
Web URL(s):
http://www.pubhort.org/ejhs/82/2/4/82_2_4.pdf
    Last checked: 06/16/2017
    Requires: PDF Reader
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