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Descripción
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.
Internacional	Si
JCR del ISI	Si
Título de la revista	Crop Pasture Sci
ISSN	1836-0947
Factor de impacto JCR	1,483
Información de impacto
Volumen	67
DOI	http://dx.doi.org/10.1071/CP15134
Número de revista	1
Desde la página	99
Hasta la página	108
Mes	SIN MES
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• Autor: Maria Elena Benavente Barzana (UPM)
• Autor: Jose Maria Carrillo Becerril (UPM)

• Creador: Grupo de Investigación: Mejora Genética de plantas
• Departamento: Biotecnología - Biología Vegetal