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| DOI: | 10.21273/HORTSCI12413-17 |
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| Publication Type:
| Refereed |
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| Author(s): | Zhang, Xunzhong;
Wu, Wenli;
Ervin, Erik H.;
Shang, Chao;
Harich, Kim |
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| Author Affiliation: | Zhang, Ervin, and Shang: Department of Crop and Soil Environmental Sciences, Virginia Polytechnic Institute and State University, Blacksburg, VA; Wu: Department of Crop and Soil Environmental Sciences, Virginia Polytechnic Institute and State University, Blacksburg, VA and Institute of Agricultural Environment and Resources, Shanxi Academy of Agricultural Sciences, Taiyuan, Shanxi, People's Republic of China; Harich: Department of Biochemistry, Virginia Polytechnic Institute and State University, Blacksburg, VA |
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| Title: | Salt stress-induced injury is associated with hormonal alteration in kentucky bluegrass |
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| Section: | Turf mangement
Other records with the "Turf mangement" Section
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| Source: | HortScience. Vol. 53, No. 1, January 2018, p. 97-101. |
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| Publishing Information: | Alexandria, Virginia: American Society for Horticultural Science |
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| # of Pages: | 5 |
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| Keywords: | TIC Keywords: Abiotic injury; Electrolyte leakage; Hormonal control; Photosynthetic capacity; Plant growth regulators; Plant physiology; Poa pratensis; Salt stress; Stress response
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| Abstract/Contents: | "Plant hormones play an important role in plant adaptation to abiotic stress, but hormonal responses of cool-season turfgrass species to salt stress are not well documented. This study was carried out to investigate the responses of hormones to salt stress and examine if salt stress-induced injury was associated with hormonal alteration in kentucky bluegrass (KBG, Poa pratensis L.). The grass was grown in a growth chamber for 6 weeks and then subjected to salt stress (170 mM NaCl) for 28 days. Salt stress caused cell membrane damage, resulting in photosynthetic rate (Pn), chlorophyll (Chl), and turf quality decline in KBG. Salt stress increased leaf abscisic acid (ABA) and ABA/cytokinin (CK) ratio; reduced trans-zeatin riboside (ZR), isopentenyl adenosine (iPA), and indole-3-acetic acid (IAA), but did not affect gibberellin A4 (GA4). On average, salt stress reduced ZR by 67.4% and IAA by 58.6%, whereas it increased ABA by 398.5%. At the end of the experiment (day 28), turf quality, Pn, and stomatal conductance (gs) were negatively correlated with ABA and ABA/CK ratio, but positively correlated with ZR, iPA, and IAA. Electrolyte leakage (EL) was positively correlated with ABA and ABA/CK and negatively correlated with ZR, iPA, IAA, and GA4. GA4 was also positively correlated with turf quality and gs. The results of this study suggest that salt stress-induced injury of the cell membrane and photosynthetic function may be associated with hormonal alteration and imbalance in KBG." |
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| Language: | English |
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| References: | 29 |
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| Note: | Tables
Graphs |
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| ASA/CSSA/SSSA Citation (Crop Science-Like - may be incomplete):
Zhang, X., W. Wu, E. H. Ervin, C. Shang, and K. Harich. 2018. Salt stress-induced injury is associated with hormonal alteration in kentucky bluegrass. HortScience. 53(1):p. 97-101. |
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| DOI: 10.21273/HORTSCI12413-17 |
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MSU catalog number: b2217685a |
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