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Intraspecific variation in drought susceptibility in Eucalyptus globulus is linked to differences in leaf vulnerability

Lucani, CJ, Brodribb, TJ ORCID: 0000-0002-4964-6107, Jordan, G ORCID: 0000-0002-6033-2766 and Mitchell, PJ 2018 , 'Intraspecific variation in drought susceptibility in Eucalyptus globulus is linked to differences in leaf vulnerability' , Functional Plant Biology, vol. 46, no. 3 , pp. 286-293 , doi: 10.1071/FP18077.

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Abstract

Understanding intraspecific variation in the vulnerability of the xylem to hydraulic failure during drought is critical in predicting the response of forest tree species to climate change. However, few studies have assessed intraspecific variation in this trait, and a likely limitation is the large number of measurements required to generate the standard 'vulnerability curve' used to assess hydraulic failure. Here we explore an alternative approach that requires fewer measurements, and assess within species variation in leaf xylem vulnerability in Eucalyptus globulus Labill., an ecologically and economically important species with known genetic variation in drought tolerance. Using this approach we demonstrate significant phenotypic differences and evidence of plasticity among two provenances with contrasting drought tolerance.

Item Type: Article
Authors/Creators:Lucani, CJ and Brodribb, TJ and Jordan, G and Mitchell, PJ
Keywords: eucalypt, leaf xylem vulnerability, hydraulic vulnerability, intraspecific variation, Eucalyptus
Journal or Publication Title: Functional Plant Biology
Publisher: CSIRO Publishing
ISSN: 1445-4408
DOI / ID Number: 10.1071/FP18077
Copyright Information:

Copyright 2018 CSIRO

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