Full TGIF Record # 290270
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Web URL(s):https://scisoc.confex.com/crops/2017am/webprogram/Paper106559.html
    Last checked: 10/11/2017
Publication Type:
i
Report
Content Type:Abstract or Summary only
Author(s):Wu, Wenli; Zhang, Qiang; Ervin, Erik H.; Yang, Zhiping; Zhang, Xunzhong
Author Affiliation:Wu: Institute of Agricultural Environment and Resource, Shanxi Academy of Agricultural Science, Taiyuan, China; Qiang Zhang and Yang: Shanxi Academy of Agricultural Science, Taiyuan, China; Ervin: Crop and Soil Environmental Sciences Dept, Virginia Tech University, Blacksburg, VA; Xunzhong Zhang: CSES and Virginia Tech, Blacksburg, VA
Title:24-epibrassinolide impacts on salt tolerance of perennial ryegrass
Section:C05 Turfgrass Science
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Turf science and management general poster (includes student competition)
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Meeting Info.:Tampa, Florida: October 22-25, 2017
Source:ASA, CSSA and SSSA International Annual Meetings. 2017, p. 106559.
Publishing Information:[Milwaukee, Wisconsin]: [American Society of Agronomy and the Entomological Society of America]
# of Pages:1
Keywords:TIC Keywords: Brassinosteroids; Growth regulator evaluation; Lolium perenne; Salt tolerance
Abstract/Contents:"Brassinosteroids (BR) regulate plant tolerance to salt stress but the mechanisms underlying are not fully understood. This study was to investigate physiological mechanisms of 24-epibrassinolide (EBR)'s impact on salt stress tolerance in perennial ryegrass (Lolium perenne L.) The grass seedlings were treated with EBR at 0, 10, and 100 nM, and subjected to salt stress (250 mM NaCl). The grass irrigated with regular water without EBR served as the control. Salt stress increased leaf electrolyte leakage (EL), malondialdehyde (MDA) and reduced photosynthetic rate (Pn). Exogenous EBR reduced EL and MDA, increased Pn, chlorophyll content, and stomatal conductance (gs). The EBR applications also alleviated decline of superoxide dismutase (SOD) and catalase (CAT) and ascorbate peroxidase (APX) activity when compared to salt treatment alone. Salt stress increased leaf abscisic acid (ABA) and gibberellin A4 (GA4) content but reduced indole-3-acetic acid (IAA), zeatin riboside (ZR), isopentenyl adenosine (iPA), and salicylic acid (SA). Exogenous EBR at 10 nm and 100 nM increased ABA, and iPA content under salt stress. The EBR treatment at 100 nM also increased leaf IAA, ZR, JA, and SA. In addition, EBR treatments increased leaf proline and ions (K+, Mg2+, and Ca2+) content, and reduced Na+/K+ in leaf tissues. The results of this study suggest that EBR treatment may improve salt stress tolerance by increasing the level of selected hormones and antioxidant enzyme (SOD and CAT) activity, promoting accumulation of proline and ions (K+, Ca2+, and Mg2+) in perennial ryegrass."
Language:English
References:0
Note:This item is an abstract only!
"619"
ASA/CSSA/SSSA Citation (Crop Science-Like - may be incomplete):
Wu, W., Q. Zhang, E. H. Ervin, Z. Yang, and X. Zhang. 2017. 24-epibrassinolide impacts on salt tolerance of perennial ryegrass. Agron. Abr. p. 106559.
Fastlink to access this record outside TGIF: https://tic.msu.edu/tgif/flink?recno=290270
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    Last checked: 10/11/2017
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