Repositorio
Institucional

Sinha, Neelima R.

Ostria-Gallardo, Enrique#Ranjan, Aashish#Ichihashi, Yasunori#Corcuera, Luis J.

Decoding the gene coexpression network underlying the ability of Gevuina avellana to live in diverse light conditions

WILEY

NEW PHYTOLOGIST

en

Gevuina avellana (Proteaceae) is a typical tree from the South American temperate rainforest. Although this species mostly regenerates in shaded understories, it exhibits an exceptional ecological breadth, being able to live under a wide range of light conditions. Here we studied the genetic basis that underlies physiological acclimation of the photosynthetic responses of G.avellana under contrasting light conditions. We analyzed carbon assimilation and light energy used for photochemical processes in plants acclimated to contrasting light conditions. Also, we used a transcriptional profile of leaf primordia from G.avellana saplings growing under different light environments in their natural habitat, to identify the gene coexpression network underpinning photosynthetic performance and light-related processes. The photosynthetic parameters revealed optimal performance regardless of light conditions. Strikingly, the mechanism involved in dissipation of excess light energy showed no significant differences between high- and low-light-acclimated plants. The gene coexpression network defined a community structure consistent with the photochemical responses, including genes involved mainly in assembly and functioning of photosystems, photoprotection, and retrograde signaling. This ecophysiological genomics approach improves our understanding of the intraspecific variability that allows G.avellana to have optimal photochemical and photoprotective mechanisms in the diverse light habitats it encounters in nature.

Artículo original

E.O-G. thanks the Chilean National Commission for Scientific and Technological Research for doctoral fellowship, and the internship grant supported by Universidad de Concepcion, project Mecesup UCO0708. We also thank Dr Carolina Sanhueza and Karina Rifo for their support in gas exchange and fluorescence of Chla measurements, and Katalapi Park for excellent research field facilities. Part of the work was supported by NSF PGRP grant IOS-1238243 (to Julia Bailey-Serres, N.R.S., Siobhan Brady and Roger Deal). Y.I. thanks the Japan Science and Technology Agency (PRESTO, JPMJPR15Q2).

E.O-G. agradece a la Comisión Nacional de Investigación Científica y Tecnológica de Chile por la beca doctoral y la beca de prácticas de la Universidad de Concepción, proyecto Mecesup UCO0708. También agradecemos a la Dra. Carolina Sanhueza y a Karina Rifo por su apoyo en las mediciones de intercambio gaseoso y fluorescencia de Chla, y a Katalapi Park por sus excelentes instalaciones de investigación. Parte del trabajo fue financiado por la beca PGRP de la NSF IOS-1238243 (para Julia Bailey-Serres, N.R.S., Siobhan Brady y Roger Deal). Y.I. agradece a la Agencia Japonesa de Ciencia y Tecnología (PRESTO, JPMJPR15Q2).

10.1111/nph.15278

pdf

gene coexpression network# Gevuina avellana# light acclimation# photosynthesis# temperate rainforest

http://dx.doi.org/10.1111/nph.15278

Plant Sciences

red de coexpresión genética# Gevuina avellana# aclimatación ligera# fotosíntesis# selva templada

Botánica

Genética y Herencia

Ecología

WOS:000442993700026

Decoding the gene coexpression network underlying the ability of <i>Gevuina avellana</i> to live in diverse light conditions

Artículo original

version publicada

WILEY

NEW PHYTOLOGIST

Ciencias de las plantas

0028-646X

en

UdeC Mecesup UCO0708#NSF PGRP IOS-1238243#JPMJPR15Q2

ANID CONICYT

UdeC UCO0708

NSF PGRP IOS-1238243

Japan Science and Technology Agency JPMJPR15Q2

E.O-G. thanks the Chilean National Commission for Scientific and Technological Research for doctoral fellowship, and the internship grant supported by Universidad de Concepcion, project Mecesup UCO0708. We also thank Dr Carolina Sanhueza and Karina Rifo for their support in gas exchange and fluorescence of Chla measurements, and Katalapi Park for excellent research field facilities. Part of the work was supported by NSF PGRP grant IOS-1238243 (to Julia Bailey-Serres, N.R.S., Siobhan Brady and Roger Deal). Y.I. thanks the Japan Science and Technology Agency (PRESTO, JPMJPR15Q2).

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