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| DOI: | 10.1016/j.envexpbot.2017.02.012 |
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| Web URL(s): | http://www.sciencedirect.com/science/article/pii/S0098847217300485?via%3Dihub
Last checked: 07/12/2017
Access conditions: Item is within a limited-access website |
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| Publication Type:
| Refereed |
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| Author(s): | Zhang, Jing;
Shi, Yi;
Zhang, Xunzhong;
Du, Hongmei;
Xu, Bin;
Huang, Bingru |
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| Author Affiliation: | Jing Zhang: College of Agro-grassland Science, Nanjing Agricultural University, Nanjing, PR China and Department of Plant Biology and Pathology, Rutgers, the State University of New Jersey, New Brunswick, NJ; Shi: Department of Plant Biology and Pathology, Rutgers, the State University of New Jersey, New Brunswick, NJ and College of Pratacultural Science, Gansu Agricultural University, Lanzhou, Gansu, PR China; Xunzhong Zhang: Department of Crop and Soil Environmental Sciences, Virginia Polytechnic Institute and State University, Blacksburg, VA; Du: Department of Plant Biology and Pathology, Rutgers, the State University of New Jersey, New Brunswick, NJ and School of Agriculture and Biology, Shanghai Jiao Tong University, Shanghai, PR China; Xu: College of Agro-grassland Science, Nanjing Agricultural University, Nanjing, PR China; Huang: Department of Plant Biology and Pathology, Rutgers, the State University of New Jersey, New Brunswick, NJ |
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| Title: | Melatonin suppression of heat-induced leaf senescence involves changes in abscisic acid and cytokinin biosynthesis and signaling pathways in perennial ryegrass (Lolium perenne L.) |
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| Source: | Environmental and Experimental Botany. Vol. 138, June 2017, p. 36-45. |
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| Publishing Information: | Elsevier |
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| # of Pages: | 10 |
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| Related Web URL: | http://ars.els-cdn.com/content/image/1-s2.0-S0098847217300485-mmc1.docx
Last checked: 07/17/2017
Requires: Microsoft Word
Access conditions: Item is within a limited-access website
Notes: Supplementary tables |
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| Keywords: | TIC Keywords: Abscisic acid; Biosynthesis; Cytokinins; Heat resistance; Heat stress; Lolium perenne; Senescence; Symptoms
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| Cultivar Names: | Pinnacle |
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| Abstract/Contents: | "Leaf senescence is a typical symptom of heat damage in cool-season plant species. The objective of this study was to determine whether melatonin could suppress heat-induced leaf senescence in perennial ryegrass (Lolium perenne L.) and whether melatonin interacted with abscisic acid (ABA) and cytokinin (CK) to exert its biological function. Perennial ryegrass (cv. 'Pinnacle') plants were foliar sprayed with melatonin or water and exposed to heat stress at 38/33 ° C (day/night) and non-stress condition at 22/17 ° C for 28 d in growth chambers. Exogenous application of melatonin alleviated growth inhibition and leaf senescence induced by heat stress, as manifested by significant higher tiller number, above-ground dry weight, plant height, turf quality, leaf chlorophyll (Chl) content, photochemical efficiency (Fv/Fm), net photosynthesis rate, and cell membrane stability in melatonin-treated plants compared to non-melatonin treatment under heat stress. The suppression of heat-induced leaf senescence by melatonin was also reflected by the reduction of transcript levels of senescence-associated genes (LpSAG12.1 and Lph36) in plants exposed to heat stress. Melatonin treatment increased the endogenous content of melatonin and CK content, whereas it decreased ABA content under heat stress. The expression of CK biosynthesis genes and its signaling response transcription factors (type B ARRs) were up-regulated, while the biosynthesis and signaling genes involved in ABA were down-regulated by melatonin treatment under heat stress. These results indicate that the suppression of heat-induced leaf senescence by exogenous melatonin could be associated with activating CK synthesis and signaling while inhibiting ABA synthesis and signaling in perennial ryegrass." |
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| Language: | English |
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| References: | 55 |
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| Note: | Pictures, color
Figures
Tables
Graphs |
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| ASA/CSSA/SSSA Citation (Crop Science-Like - may be incomplete):
Zhang, J., Y. Shi, X. Zhang, H. Du, B. Xu, and B. Huang. 2017. Melatonin suppression of heat-induced leaf senescence involves changes in abscisic acid and cytokinin biosynthesis and signaling pathways in perennial ryegrass (Lolium perenne L.). Environ. Exp. Bot. 138:p. 36-45. |
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| DOI: 10.1016/j.envexpbot.2017.02.012 |
| Web URL(s):
http://www.sciencedirect.com/science/article/pii/S0098847217300485?via%3Dihub
Last checked: 07/12/2017
Access conditions: Item is within a limited-access website |
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MSU catalog number: b4885055 |
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