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DOI: | 10.2135/cropsci2013.01.0045 |
Web URL(s): | https://dl.sciencesocieties.org/publications/cs/articles/53/4/1626 Last checked: 11/07/2016 Access conditions: Item is within a limited-access website https://dl.sciencesocieties.org/publications/cs/pdfs/53/4/1626 Last checked: 11/07/2016 Requires: PDF Reader Access conditions: Item is within a limited-access website |
Publication Type:
| Refereed |
Author(s): | Xu, Yan;
Du, Hongmei;
Huang, Bingru |
Author Affiliation: | Xu: School of Theoretical and Applied Science, Ramapo College of New Jersey, Mahwah; Huang: Dep. of Plant Biology and Pathology, Rutgers Univ., New Brunswick, NJ; Du: School of Agriculture and Biology, Shanghai Jiao Tong Univ., Shanghai, China |
Title: | Identification of metabolites associated with superior heat tolerance in thermal bentgrass through metabolic profiling |
Section: | Crop physiology & metabolism Other records with the "Crop physiology & metabolism" Section
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Source: | Crop Science. Vol. 53, No. 4, July/August 2013, p. 1626-1635. |
Publishing Information: | Madison, Wisconsin: Crop Science Society of America |
# of Pages: | 10 |
Related Web URL: | https://dl.sciencesocieties.org/publications/cs/abstracts/53/4/1626 Last checked: 11/07/2016 Notes: Abstract only https://dl.sciencesocieties.org/publications/cs/articles/53/4/1626?show-t-f=tables&wrapper=no Last checked: 11/07/2016 Notes: Tables only https://dl.sciencesocieties.org/publications/cs/articles/53/4/1626?show-t-f=figures&wrapper=no Last checked: 11/07/2016 Notes: Figures only |
Keywords: | TIC Keywords: Agrostis stolonifera; Agrostis scabra; Amino acids; Energy metabolism; Growth studies; Heat stress; Metabolites; Organic acids; Osmoregulation
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Abstract/Contents: | "Heat stress affects various metabolic processes and limits the growth of cool-season plants. The objectives of this study were to compare metabolite profiles of two Agrostis species exhibiting differential heat tolerance and identify key metabolites associated with heat tolerance in cool-season grass species. Heat-tolerant thermal bentgrass (Agrostis scabra Willd.) and heat-sensitive creeping bentgrass (Agrostis stolonifera L.) were exposed to 40/38°C (day/night) (heat stress) or 20/18°C (day/night) (control) for 10 d in growth chambers. Polar metabolites (remaining in the methanolwater phase and separated from those in the chloroform phase during extraction) from leaves and roots were quantified separately using gas chromatographymass spectrometry. The major heat-responsive metabolites in the two Agrostis grass species included organic acids (lactic acid, threonic acid, and aminomalonic acid) and sugars (glucose, fructose, sucrose, and maltose) in leaves and amino acids (valine, alanine, proline, aspartic acid, γ-aminobutyric acid, and asparagines), organic acids (threonic acid, gluconic acid, and citric acid), and sugars (fructose, floridoside, and turanose) in roots. Compared to heat-sensitive A. stolonifera, heat-tolerant A. scabra maintained higher accumulation or lesser degradation of soluble monosaccharides (fructose and glucose) necessary for energy production, branched-chain amino acids (valine and isoleucine) used in secondary signaling, and 5-oxoproline and putrescine for antioxidant defense as well as sucrose, proline, and myo-inositol involved in osmotic regulation. The results suggest that maintaining active cellular metabolisms for energy production, stress signaling, antioxidant protection, and osmoregulation could contribute to superior heat tolerance in cool-season grass species." |
Language: | English |
References: | 49 |
Note: | Tables Graphs |
| ASA/CSSA/SSSA Citation (Crop Science-Like - may be incomplete): Xu, Y., H. Du, and B. Huang. 2013. Identification of metabolites associated with superior heat tolerance in thermal bentgrass through metabolic profiling. Crop Sci. 53(4):p. 1626-1635. |
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| DOI: 10.2135/cropsci2013.01.0045 |
| Web URL(s): https://dl.sciencesocieties.org/publications/cs/articles/53/4/1626 Last checked: 11/07/2016 Access conditions: Item is within a limited-access website https://dl.sciencesocieties.org/publications/cs/pdfs/53/4/1626 Last checked: 11/07/2016 Requires: PDF Reader Access conditions: Item is within a limited-access website |
| MSU catalog number: b2211522a |
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