Stem hydraulic traits and leaf water-stress tolerance are co-ordinated with the leaf phenology of angiosperm trees in an Asian tropical dry karst forest.

Annals of Botany
Pei-Li FuKun-Fang Cao

Abstract

The co-occurring of evergreen and deciduous angiosperm trees in Asian tropical dry forests on karst substrates suggests the existence of different water-use strategies among species. In this study it is hypothesized that the co-occurring evergreen and deciduous trees differ in stem hydraulic traits and leaf water relationships, and there will be correlated evolution in drought tolerance between leaves and stems. A comparison was made of stem hydraulic conductivity, vulnerability curves, wood anatomy, leaf life span, leaf pressure-volume characteristics and photosynthetic capacity of six evergreen and six deciduous tree species co-occurring in a tropical dry karst forest in south-west China. The correlated evolution of leaf and stem traits was examined using both traditional and phylogenetic independent contrasts correlations. It was found that the deciduous trees had higher stem hydraulic efficiency, greater hydraulically weighted vessel diameter (D(h)) and higher mass-based photosynthetic rate (A(m)); while the evergreen species had greater xylem-cavitation resistance, lower leaf turgor-loss point water potential (π(0)) and higher bulk modulus of elasticity. There were evolutionary correlations between leaf life span and stem ...Continue Reading

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Citations

Jun 23, 2012·Annals of Botany·J S Pat Heslop-Harrison
Oct 21, 2014·Ecology Letters·Megan K BartlettLawren Sack
May 16, 2018·The New Phytologist·Feng-Ping ZhangTimothy J Brodribb
Jan 13, 2018·Ecology and Evolution·José L A SilvaJuliana E Lichston
Jan 13, 2018·Ecology and Evolution·Nalaka GeekiyanageKaoru Kitajima
Sep 30, 2014·The New Phytologist·Ya-Jun ChenFrans Bongers
Jan 30, 2013·The New Phytologist·Stefano ManzoniAmilcare Porporato
Feb 22, 2021·Tree Physiology·Georgina González-RebelesClara Tinoco-Ojanguren
Jun 26, 2021·The New Phytologist·German Vargas GJennifer S Powers

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