Comparative Root Transcriptomics Provide Insights into Drought Adaptation Strategies in Chickpea (Cicer arietinum L.)

International Journal of Molecular Sciences
Vijay BhaskarlaNitin Mantri

Abstract

Drought adversely affects crop production across the globe. The root system immensely contributes to water management and the adaptability of plants to drought stress. In this study, drought-induced phenotypic and transcriptomic responses of two contrasting chickpea (Cicer arietinum L.) genotypes were compared at the vegetative, reproductive transition, and reproductive stages. At the vegetative stage, drought-tolerant genotype maintained higher root biomass, length, and surface area under drought stress as compared to sensitive genotype. However, at the reproductive stage, root length and surface area of tolerant genotype was lower but displayed higher root diameter than sensitive genotype. The shoot biomass of tolerant genotype was overall higher than the sensitive genotype under drought stress. RNA-seq analysis identified genotype- and developmental-stage specific differentially expressed genes (DEGs) in response to drought stress. At the vegetative stage, a total of 2161 and 1873 DEGs, and at reproductive stage 4109 and 3772 DEGs, were identified in the tolerant and sensitive genotypes, respectively. Gene ontology (GO) analysis revealed enrichment of biological categories related to cellular process, metabolic process, resp...Continue Reading

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Citations

Dec 15, 2020·Physiologia Plantarum·Jitendra KumarKadambot H M Siddique
Aug 20, 2021·Cellular and Molecular Life Sciences : CMLS·Andrey S MarchevMilen I Georgiev

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Methods Mentioned

BETA
gene modification
RNA-seq

Software Mentioned

EdgeR
HTSeq
R
agriGO
Bowtie
count
SPSS
superSAGE
Tophat

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