Performance-based inference of selection on stomatal length and specific leaf area varies with climate-of-origin of the forest tree, Eucalyptus ovata

Costa e Silva, João; Potts, Brad M.; Prober, Suzanne M.

Publicação

Performance-based inference of selection on stomatal length and specific leaf area varies with climate-of-origin of the forest tree, Eucalyptus ovata

2024Artigo científico

dc.contributor.author	Costa e Silva, João
dc.contributor.author	Potts, Brad M.
dc.contributor.author	Prober, Suzanne M.
dc.date.accessioned	2024-01-15T13:46:18Z
dc.date.available	2024-01-15T13:46:18Z
dc.date.issued	2024
dc.description.abstract	Understanding how functional traits affect plant performance and fitness is a key step in unravelling the role of natural selection in shaping the evolutionary trajectory of populations. We examined early-age selection acting on leaf traits via their effects on growth performance and fitness, measured in Eucalyptus ovata trees planted in a common-garden field trial embedded in a reforestation planting in Tasmania, Australia. We focused on two important leaf traits - stomatal length and specific leaf area (SLA) - measured two years after planting, and compared interplanted E. ovata groups originating from dry and wet home-site climates, with the trial site having intermediate long-term mean annual rainfall. Two-year height growth was used as the performance attribute, and the time-averaged tree survival over the subsequent six years as the fitness component. There was evidence for performance-based selection on the leaf traits, with the strength and form of selection depending on the trait and climate group being considered. In this sense, selection in the dry group operated mainly on stomatal length where a combination of directional (favouring longer stomata) and stabilizing selection was detected, whereas selection in the wet group acted only on SLA and was purely stabilizing. Estimates of performance-based correlational selection were not statistically significant. For both climate groups, estimates of fitness-based selection gradients provided evidence for significant directional (but not quadratic) selection on height performance, favouring individuals with faster growth, but did not indicate statistical support for direct effects of the leaf traits on tree survival, conditional on measured performance. These results validated qualitative inferences of selection from the performance-based analysis, and suggested that selection on the leaf traits appeared to be mediated by their effects on early-age height performance, which in turn directly influenced later-age survival. We discuss the mechanisms by which the focal traits may have affected height performance, and likely factors contributing to the different patterns of phenotypic selection observed in the two groups experiencing the same environment. We also provide expressions of analytical derivatives that were developed for the estimation of selection gradients based on a logistic regression model relating a binary fitness response to linear and nonlinear covariate terms for the target regressor variables.	pt_PT
dc.description.version	info:eu-repo/semantics/publishedVersion	pt_PT
dc.identifier.citation	Costa e Silva, J., Potts, B.M., Prober, S.M. Performance-based inference of selection on stomatal length and specific leaf area varies with climate-of-origin of the forest tree, Eucalyptus ovata, Perspectives in Plant Ecology. Evolution and Systematics. Volume 62, 2024, 125765.	pt_PT
dc.identifier.uri	http://hdl.handle.net/10400.5/29825
dc.language.iso	eng	pt_PT
dc.publisher	Elsevier	pt_PT
dc.relation	Not Available
dc.relation	Forest Research Centre
dc.relation	Forest Research Centre
dc.rights.uri	http://creativecommons.org/licenses/by/4.0/	pt_PT
dc.subject	Phenotypic selection	pt_PT
dc.subject	Selection gradients	pt_PT
dc.subject	Performance gradients	pt_PT
dc.subject	Leaf functional traits	pt_PT
dc.subject	Growth performance	pt_PT
dc.subject	Tree survival	pt_PT
dc.title	Performance-based inference of selection on stomatal length and specific leaf area varies with climate-of-origin of the forest tree, Eucalyptus ovata	pt_PT
dc.type	journal article
dspace.entity.type	Publication
oaire.awardNumber	DL 57/2016/CP1382/CT0008
oaire.awardNumber	UID/AGR/00239/2019
oaire.awardNumber	UIDB/00239/2020
oaire.awardTitle	Not Available
oaire.awardTitle	Forest Research Centre
oaire.awardTitle	Forest Research Centre
oaire.awardURI	info:eu-repo/grantAgreement/FCT/DL 57%2F2016/DL 57%2F2016%2FCP1382%2FCT0008/PT
oaire.awardURI	info:eu-repo/grantAgreement/FCT/6817 - DCRRNI ID/UID%2FAGR%2F00239%2F2019/PT
oaire.awardURI	info:eu-repo/grantAgreement/FCT/6817 - DCRRNI ID/UIDB%2F00239%2F2020/PT
oaire.citation.startPage	125765	pt_PT
oaire.citation.title	Perspectives in Plant Ecology, Evolution and Systematics	pt_PT
oaire.citation.volume	62	pt_PT
oaire.fundingStream	DL 57/2016
oaire.fundingStream	6817 - DCRRNI ID
oaire.fundingStream	6817 - DCRRNI ID
person.familyName	Costa e Silva
person.givenName	Joao
person.identifier.orcid	0000-0003-1422-9554
project.funder.identifier	http://doi.org/10.13039/501100001871
project.funder.identifier	http://doi.org/10.13039/501100001871
project.funder.identifier	http://doi.org/10.13039/501100001871
project.funder.name	Fundação para a Ciência e a Tecnologia
project.funder.name	Fundação para a Ciência e a Tecnologia
project.funder.name	Fundação para a Ciência e a Tecnologia
rcaap.rights	openAccess	pt_PT
rcaap.type	article	pt_PT
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