Narrow-sense heritability and P-ST estimates of DNA methylation in three Populus nigra L. populations under contrasting water availability

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216208%3A11310%2F18%3A10385600" target="_blank" >RIV/00216208:11310/18:10385600 - isvavai.cz</a>

Result on the web

<a href="https://doi.org/10.1007/s11295-018-1293-6" target="_blank" >https://doi.org/10.1007/s11295-018-1293-6</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1007/s11295-018-1293-6" target="_blank" >10.1007/s11295-018-1293-6</a>

Result language

angličtina

Original language name

Narrow-sense heritability and P-ST estimates of DNA methylation in three Populus nigra L. populations under contrasting water availability

Original language description

In a context of climate change and forest decline, a better understanding of the sources of tree flexibility involved in phenotypic plasticity and adaptation is needed. These last years, the role of epigenetics in the response to environmental variations has been established in several model plants at the genotype level but little is known at the level of natural populations grown in pedoclimatic sites. Here, we focused on three French natural populations of black poplar, a key pioneer tree from watersheds, planted in common garden and subjected to controlled variations of water availability. We estimated common genetic parameters such as narrow-sense heritability (h(2)), phenotypic differentiation index (P-ST), and the overall genetic differentiation index (F-ST) from genome-wide SNPs to evaluate the extent of epigenetic variations. Indeed, global DNA methylation levels from individuals exposed to drought or irrigated in a common garden were used. We found that the three populations were not distinguished by their levels of DNA methylation. However, a moderate drought was associated to a significant decrease in DNA methylation in the populations. Narrow-sense heritability and P-ST estimates of DNA methylation were similar to those found for biomass productivity. Heritability and P-ST were higher when trees were subjected to drought than in control condition. Negative genetic correlations between global DNA methylation and height or biomass were detected in drought condition only. Altogether, our data highlight that global DNA methylation acts as a genetic marker of natural population differentiation under drought stress in a pedoclimatic context.

Czech name

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Czech description

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Type

J_imp - Article in a specialist periodical, which is included in the Web of Science database

CEP classification

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OECD FORD branch

10611 - Plant sciences, botany

Project

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Continuities

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Publication year

2018

Confidentiality

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Name of the periodical

Tree Genetics and Genomes

ISSN

1614-2942

e-ISSN

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Volume of the periodical

14

Issue of the periodical within the volume

5

Country of publishing house

DE - GERMANY

Number of pages

12

Pages from-to

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UT code for WoS article

000446045800001

EID of the result in the Scopus database

2-s2.0-85053914893