Developmental plasticity in Protea as an evolutionary response to environmental clines in the Cape Floristic Region.

Local adaptation along steep environmental gradients likely contributes to plant diversity in the Cape Region of South Africa, yet existing analyses of trait divergence are limited to static measurements of functional traits rather than trajectories of individual development. We explore whether five...

Descripción completa

Guardado en:

Detalles Bibliográficos
Autores principales:	Jane E Carlson, Kent E Holsinger
Formato:	article
Lenguaje:	EN
Publicado:	Public Library of Science (PLoS) 2012
Materias:	Medicine R Science Q
Acceso en línea:	https://doaj.org/article/9f77bc345b034e07810ee2a85e232e98
Etiquetas:	Agregar Etiqueta Sin Etiquetas, Sea el primero en etiquetar este registro!

id	oai:doaj.org-article:9f77bc345b034e07810ee2a85e232e98
record_format	dspace
spelling	oai:doaj.org-article:9f77bc345b034e07810ee2a85e232e982021-11-18T08:05:10ZDevelopmental plasticity in Protea as an evolutionary response to environmental clines in the Cape Floristic Region.1932-620310.1371/journal.pone.0052035https://doaj.org/article/9f77bc345b034e07810ee2a85e232e982012-01-01T00:00:00Zhttps://www.ncbi.nlm.nih.gov/pmc/articles/pmid/23272203/pdf/?tool=EBIhttps://doaj.org/toc/1932-6203Local adaptation along steep environmental gradients likely contributes to plant diversity in the Cape Region of South Africa, yet existing analyses of trait divergence are limited to static measurements of functional traits rather than trajectories of individual development. We explore whether five taxa of evergreen shrubs (Protea section Exsertae) differ in their developmental trajectories and capacity for plasticity using two environmentally-distinct common gardens in South Africa. We measured seedlings in the summer-dry season and winter-wet season of each of two consecutive years to characterize ontogeny and plasticity within years, as same-age leaf cohorts mature, and between years, i.e., from leaf one cohort to the next. We compared patterns of development between gardens to assess whether trait trajectories are programmed versus plastic and examined whether developmental differences covaried with characteristics of a seedling's home environment. We detected plasticity in developmental trajectories for leaf area, stomatal size, stomatal pore index, and to a limited extent specific leaf area, but not for stomatal density. We showed that the species growing in the harshest environments exhibits both the smallest increase in leaf area between years and the least change in SLA and photosynthetic rates as leaves age within years. These results show that within this clade, species have diverged in developmental trajectories and plasticity as well as in mean trait values. Some of these differences may be associated with adaptation to cold and drought stress within an environmentally-complex region.Jane E CarlsonKent E HolsingerPublic Library of Science (PLoS)articleMedicineRScienceQENPLoS ONE, Vol 7, Iss 12, p e52035 (2012)
institution	DOAJ
collection	DOAJ
language	EN
topic	Medicine R Science Q
spellingShingle	Medicine R Science Q Jane E Carlson Kent E Holsinger Developmental plasticity in Protea as an evolutionary response to environmental clines in the Cape Floristic Region.
description	Local adaptation along steep environmental gradients likely contributes to plant diversity in the Cape Region of South Africa, yet existing analyses of trait divergence are limited to static measurements of functional traits rather than trajectories of individual development. We explore whether five taxa of evergreen shrubs (Protea section Exsertae) differ in their developmental trajectories and capacity for plasticity using two environmentally-distinct common gardens in South Africa. We measured seedlings in the summer-dry season and winter-wet season of each of two consecutive years to characterize ontogeny and plasticity within years, as same-age leaf cohorts mature, and between years, i.e., from leaf one cohort to the next. We compared patterns of development between gardens to assess whether trait trajectories are programmed versus plastic and examined whether developmental differences covaried with characteristics of a seedling's home environment. We detected plasticity in developmental trajectories for leaf area, stomatal size, stomatal pore index, and to a limited extent specific leaf area, but not for stomatal density. We showed that the species growing in the harshest environments exhibits both the smallest increase in leaf area between years and the least change in SLA and photosynthetic rates as leaves age within years. These results show that within this clade, species have diverged in developmental trajectories and plasticity as well as in mean trait values. Some of these differences may be associated with adaptation to cold and drought stress within an environmentally-complex region.
format	article
author	Jane E Carlson Kent E Holsinger
author_facet	Jane E Carlson Kent E Holsinger
author_sort	Jane E Carlson
title	Developmental plasticity in Protea as an evolutionary response to environmental clines in the Cape Floristic Region.
title_short	Developmental plasticity in Protea as an evolutionary response to environmental clines in the Cape Floristic Region.
title_full	Developmental plasticity in Protea as an evolutionary response to environmental clines in the Cape Floristic Region.
title_fullStr	Developmental plasticity in Protea as an evolutionary response to environmental clines in the Cape Floristic Region.
title_full_unstemmed	Developmental plasticity in Protea as an evolutionary response to environmental clines in the Cape Floristic Region.
title_sort	developmental plasticity in protea as an evolutionary response to environmental clines in the cape floristic region.
publisher	Public Library of Science (PLoS)
publishDate	2012
url	https://doaj.org/article/9f77bc345b034e07810ee2a85e232e98
work_keys_str_mv	AT janeecarlson developmentalplasticityinproteaasanevolutionaryresponsetoenvironmentalclinesinthecapefloristicregion AT kenteholsinger developmentalplasticityinproteaasanevolutionaryresponsetoenvironmentalclinesinthecapefloristicregion
_version_	1718422247058702336

Developmental plasticity in Protea as an evolutionary response to environmental clines in the Cape Floristic Region.

Ejemplares similares