NDLI: Transcriptome sequencing reveals population differentiation in gene expression linked to functional traits and environmental gradients in the South African shrub Protea repens.

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Transcriptome sequencing reveals population differentiation in gene expression linked to functional traits and environmental gradients in the South African shrub Protea repens.

Content Provider	World Health Organization (WHO)-Global Index Medicus
Author	Akman, Melis Carlson, Jane E. Holsinger, Kent E. Latimer, Andrew M.
Description	Country affiliation: United States Author Affiliation: Akman M ( Department of Plant Sciences, University of California Davis, One Shields Avenue, Davis, CA, 95616, USA.); Carlson JE ( Department of Biological Sciences, Nicholls State University, PO Box 2021, Thibodaux, LA, 70310, USA.); Holsinger KE ( Department of Ecology & Evolutionary Biology, University of Connecticut, U-3043, Storrs, CT, 06269-3043, USA.); Latimer AM ( Department of Plant Sciences, University of California Davis, One Shields Avenue, Davis, CA, 95616, USA.)
Abstract	Understanding the environmental and genetic mechanisms underlying locally adaptive trait variation across the ranges of species is a major focus of evolutionary biology. Combining transcriptome sequencing with common garden experiments on populations spanning geographical and environmental gradients holds promise for identifying such mechanisms. The South African shrub Protea repens displays diverse phenotypes in the wild along drought and temperature gradients. We grew plants from seeds collected at 19 populations spanning this species' range, and sequenced the transcriptomes of these plants to reveal gene pathways associated with adaptive trait variation. We related expression in co-expressed gene networks to trait phenotypes measured in the common garden and to source population climate. We found that expression in gene networks correlated with source-population environment and with plant traits. In particular, the activity of gene networks enriched for growth related pathways correlated strongly with source site minimum winter temperature and with leaf size, stem diameter and height in the garden. Other gene networks with enrichments for photosynthesis related genes showed associations with precipitation. Our results strongly suggest that this species displays population-level differences in gene expression that have been shaped by source population site climate, and that are reflected in trait variation along environmental gradients.
File Format	HTM / HTML
ISSN	0028646X
Issue Number	1
Journal	New Phytologist
Volume Number	210
e-ISSN	14698137
Language	English
Publisher	Wiley
Publisher Date	2016-04-01
Publisher Place	Great Britain (UK)
Access Restriction	One Nation One Subscription (ONOS)
Content Type	Text
Resource Type	Article
Subject	Physiology Plant Science

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Data from: Isolation by distance and isolation by environment contribute to population differentiation in Protea repens (Proteaceae L.), a widespread South African species (Dataset)

Climate explains population divergence in drought-induced plasticity of functional traits and gene expression in a South African Protea

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Transcriptome sequencing reveals population differentiation in gene expression linked to functional traits and environmental gradients in the South African shrub Protea repens.

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Data from: Isolation by distance and isolation by environment contribute to population differentiation in Protea repens (Proteaceae L.), a widespread South African species (Dataset)

Climate explains population divergence in drought-induced plasticity of functional traits and gene expression in a South African Protea

Direct and indirect selection on floral pigmentation by pollinators and seed predators in a color polymorphic South African shrub

Conservation of functional traits leads to shrub expansion across a chronosequence of shrub thicket development

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Transcriptome sequencing reveals population differentiation in gene expression linked to functional traits and environmental gradients in the South African shrub Protea repens.