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Use of transcriptomics and co-expression networks to analyze the interconnections between nitrogen assimilation and photorespiratory metabolism.

Abstract：

:Nitrogen is one of the most important nutrients for plants and, in natural soils, its availability is often a major limiting factor for plant growth. Here we examine the effect of different forms of nitrogen nutrition and of photorespiration on gene expression in the model legume Lotus japonicus with the aim of identifying regulatory candidate genes co-ordinating primary nitrogen assimilation and photorespiration. The transcriptomic changes produced by the use of different nitrogen sources in leaves of L. japonicus plants combined with the transcriptomic changes produced in the same tissue by different photorespiratory conditions were examined. The results obtained provide novel information on the possible role of plastidic glutamine synthetase in the response to different nitrogen sources and in the C/N balance of L. japonicus plants. The use of gene co-expression networks establishes a clear relationship between photorespiration and primary nitrogen assimilation and identifies possible transcription factors connected to the genes of both routes.

journal_name

J Exp Bot

journal_title

Journal of experimental botany

authors

Pérez-Delgado CM,Moyano TC,García-Calderón M,Canales J,Gutiérrez RA,Márquez AJ,Betti M

doi

10.1093/jxb/erw170

subject

Has Abstract

pub_date

2016-05-01 00:00:00

pages

3095-108

issue

10

eissn

0022-0957

issn

1460-2431

pii

erw170

journal_volume

67

pub_type

杂志文章

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