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(Reference retrieved automatically from Web of Science through information on FAPESP grant and its corresponding number as mentioned in the publication by the authors.)

Local adaptation of a dominant coastal tree to freshwater availability and solar radiation suggested by genomic and ecophysiological approaches

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Cruz, Mariana Vargas [1, 2] ; Mori, Gustavo Maruyama [3] ; Signori-Muller, Caroline [2] ; da Silva, Carla Cristina [1] ; Oh, Dong-Ha [4] ; Dassanayake, Maheshi [4] ; Zucchi, Maria Imaculada [5] ; Oliveira, Rafael Silva [2] ; de Souza, Anete Pereira [1, 2]
Total Authors: 9
[1] Univ Estadual Campinas, Ctr Mol Biol & Genet Engn, UNICAMP, BR-13083875 Campinas, SP - Brazil
[2] Univ Estadual Campinas, Inst Biol, Dept Plant Biol, UNICAMP, BR-13083863 Campinas, SP - Brazil
[3] Sao Paulo State Univ Unesp, Inst Biosci, BR-11330900 Sao Vicente, SP - Brazil
[4] Louisiana State Univ, Dept Biol Sci, Baton Rouge, LA 70803 - USA
[5] Sao Paulo Agcy Agribusiness Technol APTA, BR-13400790 Piracicaba, SP - Brazil
Total Affiliations: 5
Document type: Journal article
Source: SCIENTIFIC REPORTS; v. 9, DEC 27 2019.
Web of Science Citations: 1

Local adaptation is often a product of environmental variations in geographical space and has implications for biodiversity conservation. We investigated the role of latitudinal heterogeneity in climate on the organization of genetic and phenotypic variation in the dominant coastal tree Avicennia schaueriana. In a common garden experiment, samples from an equatorial region, with pronounced seasonality in precipitation, accumulated less biomass, and showed lower stomatal conductance and transpiration, narrower xylem vessels, smaller leaves and higher reflectance of long wavelengths by the stem epidermis than samples from a subtropical region, with seasonality in temperature and no dry season. Transcriptomic differences identified between trees sampled under field conditions at equatorial and subtropical sites, were enriched in functional categories such as responses to temperature, solar radiation, water deficit, photosynthesis and cell wall biosynthesis. Remarkably, the diversity based on genome-wide SNPs revealed a north-south genetic structure and signatures of selection were identified for loci associated with photosynthesis, anthocyanin accumulation and the responses to osmotic and hypoxia stresses. Our results suggest the existence of divergence in key resource-use characteristics, likely driven by seasonality in water deficit and solar radiation. These findings provide a basis for conservation plans and for predicting coastal plants responses to climate change. (AU)

FAPESP's process: 15/24346-9 - Allelic variation analysis in genes of economic importance among hom(oe)ologous regions of sugarcane (Saccharum spp.) genome
Grantee:Carla Cristina da Silva
Support type: Scholarships in Brazil - Post-Doctorate
FAPESP's process: 14/22821-9 - Population and functional genomics on the evolutionary study of neotropical Rhizophora species in face of historical and current climate changes
Grantee:Gustavo Maruyama Mori
Support type: Scholarships abroad - Research Internship - Post-doctor
FAPESP's process: 13/26793-7 - Evolution of Avicennia schaueriana in face of historical and current climate changes: Functional genomics and ecophysiology
Grantee:Mariana Vargas Cruz
Support type: Scholarships in Brazil - Doctorate
FAPESP's process: 13/08086-1 - Population and functional genomics and an ecophysiological approach on the evolutionary study of neotropical mangrove species in face of historical and current climate changes
Grantee:Gustavo Maruyama Mori
Support type: Scholarships in Brazil - Post-Doctorate
FAPESP's process: 11/52072-0 - Soil-plant-atmosphere interactions in a changing tropical landscape
Grantee:Rafael Silva Oliveira
Support type: Research Grants - Research Partnership for Technological Innovation - PITE