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Title

Effects of different arbuscular mycorrhizal fungal backgrounds and soils on olive plants growth and water relation properties under well-watered and drought conditions

AuthorsCalvo-Polanco, Mónica; Sánchez-Castro, Iván; Cantos, Manuel ; García Fernández, José Luis ; Azcón González de Aguilar, Rosario; Ruiz-Lozano, Juan Manuel; Beuzón, Carmen R.; Aroca, Ricardo
KeywordsArbuscular mycorrhizalfungi
Root hydraulic conductivity
Aquaporins
Olea europaea
Issue DateNov-2016
PublisherBlackwell Publishing
CitationPlant Cell and Environment 39(11): 2498-2514 (2016)
AbstractThe adaptation capacity of olive trees to different environments is well recognized. However, the presence of microorganisms in the soil is also a key factor in the response of these trees to drought. The objective of the present study was to elucidate the effects of different arbuscular mycorrhizal (AM) fungi coming from diverse soils on olive plant growth and water relations. Olive plants were inoculated with native AM fungal populations from two contrasting environments, that is, semi-arid – Freila (FL) and humid – Grazalema (GZ) regions, and subjected to drought stress. Results showed that plants grew better on GZ soil inoculated with GZ fungi, indicating a preference of AM fungi for their corresponding soil. Furthermore, under these conditions, the highest AM fungal diversity was found. However, the highest root hydraulic conductivity (Lp) value was achieved by plants inoculated with GZ fungi and growing in FL soil under drought conditions. So, this AM inoculum also functioned in soils from different origins. Nine novel aquaporin genes were also cloned from olive roots. Diverse correlation and association values were found among different aquaporin expressions and abundances and Lp, indicating how the interaction of different aquaporins may render diverse Lp values. 17 páginas.-- 6 figuras.-- 5 tablas.-- 89 referencias.-- Additional Supporting Information may be found in the online version of this article at the publisher’s web-site
Description17 páginas.-- 6 figuras.-- 5 tablas.-- 89 referencias.-- Additional Supporting Information may be found in the online version of this article at the publisher’s web-site
Publisher version (URL)http://dx.doi.org/10.1111/pce.12807
URIhttp://hdl.handle.net/10261/141668
DOI10.1111/pce.12807
Identifiersdoi: 10.1111/pce.12807
issn: 1365-3040
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