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Ruiz Valcárcel, Magdalena and Quemada Saenz-Badillos, Miguel and García-García, Rosa María and Carrillo Becerril, Jose Maria and Benavente Barzana, M. Elena (2016). Use of thermographic imaging to screen for drought-tolerant genotypes in Brachypodium distachyon. "Crop Pasture Sci", v. 67 (n. 1); pp. 99-108. ISSN 1836-0947. https://doi.org/10.1071/CP15134.
Title: | Use of thermographic imaging to screen for drought-tolerant genotypes in Brachypodium distachyon |
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Author/s: |
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Item Type: | Article |
Título de Revista/Publicación: | Crop Pasture Sci |
Date: | January 2016 |
ISSN: | 1836-0947 |
Volume: | 67 |
Subjects: | |
Faculty: | E.T.S.I. Agrónomos (UPM) [antigua denominación] |
Department: | Biotecnología - Biología Vegetal |
Creative Commons Licenses: | Recognition - No derivative works - Non commercial |
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Thermal imaging has been used to evaluate the response to drought and warm temperatures in a collection of Brachypodium distachyon lines adapted to varied environmental conditions. Thermographic records were able to separate lines from contrasting rainfall regimes. Genotypes from dryer environments showed warmer leaves under water deficit, which suggested that decreased evapotranspiration was related to a more intense stomatal closure. When irrigated and under high temperature conditions, drought-adapted lines showed cooler leaves than lines from wetter zones. The consistent, inverse thermographic response of lines to water stress and heat validates the reliability of this method to assess drought tolerance in this model cereal. It additionally supports the hypothesis that stomatal-based mechanisms are involved in natural variation for drought tolerance in Brachypodium. The study further suggests that these mechanisms are not constitutive but likely related to a more efficient closing response to avoid dehydration in adapted genotypes. Higher leaf temperature under water deficit seems a dependable criterion of drought tolerance, not only in B. distachyon but also in the main cereal crops and related grasses where thermography can facilitate high-throughput preliminary screening of tolerant materials.
Item ID: | 41266 |
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DC Identifier: | https://oa.upm.es/41266/ |
OAI Identifier: | oai:oa.upm.es:41266 |
DOI: | 10.1071/CP15134 |
Official URL: | https://doi.org/10.1071/CP15134 |
Deposited by: | Memoria Investigacion |
Deposited on: | 20 Jun 2016 14:37 |
Last Modified: | 30 Nov 2022 09:00 |