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| Web URL(s): | https://dl.sciencesocieties.org/publications/cs/articles/40/4/923
Last checked: 05/04/2017
https://dl.sciencesocieties.org/publications/cs/pdfs/40/4/923
Last checked: 05/04/2017
Requires: PDF Reader |
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| Publication Type:
| Refereed |
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| Author(s): | Malinowski, Dariusz P.;
Belesky, David P. |
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| Author Affiliation: | Malinowski: Texas A&M University, Texas Agric. Exp. Stn., Vernon TX; Belesky: USDA-ARS, Appalachian Farming Systems Research Center, Beaver, WV |
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| Title: | Adaptations of endophyte-infected cool-season grasses to environmental stresses: mechanisms of drought and mineral stress tolerance |
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| Section: | Review and interpretation
Other records with the "Review and interpretation" Section
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| Source: | Crop Science. Vol. 40, No. 4, July/August 2000, p. 923-940. |
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| Publishing Information: | Madison, WI: Crop Science Society of America |
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| # of Pages: | 18 |
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| Keywords: | TIC Keywords: Adaptation; Endophytes; Cool season turfgrasses; Environmental stress; Drought resistance; Minerals; Nutrition; Aluminum; Trifolium pratense; Festuca arundinacea; Genotypes; Alkaloids; Water use; Osmotic adjustment; Nitrogen; Phosphorus; Dry weight; Roots; Shoots; Nutrient availability; Soil pH; Arbuscular mycorrhizae; Stress factors
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| Abstract/Contents: | "Cool-season grasses infected with Neotyphodium spp. endophytes have an extraordinary impact on the ecology and economy of pasture and turf. A range of adaptations of endophyte-infected grasses to biotic and abiotic stresses has been identified but mechanisms of these adaptations are not clearly understood. In this review, we present recent research progress on endophyte-related mechanisms affecting abiotic (drought, mineral) and selected aspects of biotic stress tolerance in cool-season grasses. Endophytes induce mechanisms of drought avoidance (morphological adaptations), drought tolerance (physiological and biochemical adaptations), and drought recovery in infected grasses. Mineral nutrition (nitrogen, phosphorous, calcium) affects production of ergot alkaloids, thus understanding mechanisms involved in mineral economy of endophyte-infected grasses will help in developing management practices to reduce forage toxcity to live-stock. Previous research resolved the role of endophyte in nitrogen (N) economy of tall fescue. We identified two endophyte-related mechanisms in tall fescue operating in response to phosphorus (P) deficiency. The mechanisms are altered root morphology (reduced root diameters and longer root hairs) and chemical modification of the rhizosphere resulting from exudation of phenolic-like compounds. These mechanisms were shown to benefit endophyte-infected plants grown under P deficiency. We also report a mechanism of aluminum (Al) sequestration on root surfaces in endopyte-infected tall fescue, which appears to be related to exudation of phenolic-like compunds with Al-chelated activity. Understanding mechanisms of abiotic stress tolerance in endophyte-infected grasses is essential for continued improvement and persistence of grasses for a range of applications, e.g., forage for semi-arid areas or cover plants for soil renovation." |
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| Language: | English |
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| References: | 100+ |
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| See Also: | Other items relating to: Carbon sequestration of turf
Other items relating to: Disasters - Drought |
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| Note: | Charts
Graphs |
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| ASA/CSSA/SSSA Citation (Crop Science-Like - may be incomplete):
Malinowski, D. P., and D. P. Belesky. 2000. Adaptations of endophyte-infected cool-season grasses to environmental stresses: mechanisms of drought and mineral stress tolerance. Crop Sci. 40(4):p. 923-940. |
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| Web URL(s):
https://dl.sciencesocieties.org/publications/cs/articles/40/4/923
Last checked: 05/04/2017
https://dl.sciencesocieties.org/publications/cs/pdfs/40/4/923
Last checked: 05/04/2017
Requires: PDF Reader |
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MSU catalog number: SB 183 .C7 |
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