Integration of physiological and molecular traits would help to improve the insights of drought resistance in highbush blueberry cultivars

Balboa, Karen; Ballesteros, Gabriel I.; Molina-Montenegro, Marco A.

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dc.contributor.author	Balboa, Karen
dc.contributor.author	Ballesteros, Gabriel I.
dc.contributor.author	Molina-Montenegro, Marco A.
dc.date.accessioned	2020-12-11T19:29:01Z
dc.date.available	2020-12-11T19:29:01Z
dc.date.issued	2020
dc.identifier.uri	http://repositorio.ucm.cl/handle/ucm/3355
dc.description.abstract	Water deficit or drought is one of the most severe factors limiting plant yield or fruit quality. Thus, water availability for irrigation is decisive for crop success, such as the case of highbush blueberry (Vaccinium corymbosum L.). Therefore, drought stress may compromise blueberry production due to lower fruit weight or fruit yield. Despite this, it is unclear if there is any difference in the response of blueberry cultivars to water deficit, either in terms of physiological and molecular parameters, or in terms of their sensitivity or resistance to drought. In this study, we determined the effect of drought on different physiological parameters in blueberry plants (relative water content (RWC), photochemical efficiency of photosystem II (Fv/Fm), Carbon Isotopic Discrimination, and proline content) in six V. corymbosum cultivars. We also explored molecular responses in terms of gene expression coding for late embryogenesis abundant proteins. Finally, we estimated cultivar water deficit resistance using an integrative model based on physiological results. Upon water deficit conditions, we found reductions in Fv/Fm, RWC, and isotopic discrimination of 13C (Δ13C), while proline content increased significantly for all cultivars. Additionally, we also found differences in the estimated water deficit resistance index. These results indicate differences in water deficit resistance, possibly due to variations in cultivars’ genetic composition.	es_CL
dc.language.iso	en	es_CL
dc.rights	Atribución-NoComercial-SinDerivadas 3.0 Chile	*
dc.rights.uri	http://creativecommons.org/licenses/by-nc-nd/3.0/cl/	*
dc.source	Plants, 9(11), 1457	es_CL
dc.subject	Blueberry cultivar	es_CL
dc.subject	Drought stress	es_CL
dc.subject	Water deficit tolerance index	es_CL
dc.subject	Physiological parameters	es_CL
dc.subject	Late embryogenesis abundant proteins	es_CL
dc.title	Integration of physiological and molecular traits would help to improve the insights of drought resistance in highbush blueberry cultivars	es_CL
dc.type	Article	es_CL
dc.ucm.indexacion	Scopus	es_CL
dc.ucm.indexacion	Isi	es_CL
dc.ucm.doi	doi.org/10.3390/plants9111457	es_CL