ArticleBMC genomics2021
Comprehensive analysis and identification of drought-responsive candidate NAC genes in three semi-arid tropics (SAT) legume crops.
Article in BMC genomics, 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 11 papers.
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11 citing papers in PubMed, 29 citations in OpenAlex.
- Waterlogging tolerance in pigeonpea: current understanding of physiological responses, genetic resources, and genomic prospects.Frontiers in plant science · 2026Review
- Comparative analysis of NAC genes and their expression patterns under various treatments in Dendrobium huoshanense.BMC plant biology · 2025Article
- Functional Genomics: From Soybean to Legume.International journal of molecular sciences · 2025Review
- Genome-Wide Analysis of NAC Transcription Factor Gene Family inPlants (Basel, Switzerland) · 2025Article
- Drought Tolerance in Plants: Physiological and Molecular Responses.Plants (Basel, Switzerland) · 2024Review
- Genome-wide identification, evolution, and expression analysis of the NAC gene family in chestnut (Frontiers in genetics · 2024Article
- Developing drought-smart, ready-to-grow future crops.The plant genome · 2023Review
- Geographically Disperse, Culturable Seed-Associated Microbiota in Forage Plants of Alfalfa (Biology · 2022Article
- Genome-Wide Identification and Expression Analysis of the Zinc Finger Protein Gene Subfamilies under Drought Stress inPlants (Basel, Switzerland) · 2022Article
- Genome-wide analyses of the mung bean NAC gene family reveals orthologs, co-expression networking and expression profiling under abiotic and biotic stresses.BMC plant biology · 2022Article
- Genome-Wide Identification of theInternational journal of molecular sciences · 2022Article
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4 authors at 1 institution in 1 country.
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Abstract
backgroundChickpea, pigeonpea, and groundnut are the primary legume crops of semi-arid tropics (SAT) and their global productivity is severely affected by drought stress. The plant-specific NAC (NAM - no apical meristem, ATAF - Arabidopsis transcription activation factor, and CUC - cup-shaped cotyledon) transcription factor family is known to be involved in majority of abiotic stresses, especially in the drought stress tolerance mechanism. Despite the knowledge available regarding NAC function, not much information is available on NAC genes in SAT legume crops.
resultsIn this study, genome-wide NAC proteins - 72, 96, and 166 have been identified from the genomes of chickpea, pigeonpea, and groundnut, respectively, and later grouped into 10 clusters in chickpea and pigeonpea, while 12 clusters in groundnut. Phylogeny with well-known stress-responsive NACs in Arabidopsis thaliana, Oryza sativa (rice), Medicago truncatula, and Glycine max (soybean) enabled prediction of putative stress-responsive NACs in chickpea (22), pigeonpea (31), and groundnut (33). Transcriptome data revealed putative stress-responsive NACs at various developmental stages that showed differential expression patterns in the different tissues studied. Quantitative real-time PCR (qRT-PCR) was performed to validate the expression patterns of selected stress-responsive, Ca_NAC (Cicer arietinum - 14), Cc_NAC (Cajanus cajan - 15), and Ah_NAC (Arachis hypogaea - 14) genes using drought-stressed and well-watered root tissues from two contrasting drought-responsive genotypes of each of the three legumes. Based on expression analysis, Ca_06899, Ca_18090, Ca_22941, Ca_04337, Ca_04069, Ca_04233, Ca_12660, Ca_16379, Ca_16946, and Ca_21186; Cc_26125, Cc_43030, Cc_43785, Cc_43786, Cc_22429, and Cc_22430; Ah_ann1.G1V3KR.2, Ah_ann1.MI72XM.2, Ah_ann1.V0X4SV.1, Ah_ann1.FU1JML.2, and Ah_ann1.8AKD3R.1 were identified as potential drought stress-responsive candidate genes.
conclusionAs NAC genes are known to play role in several physiological and biological activities, a more comprehensive study on genome-wide identification and expression analyses of the NAC proteins have been carried out in chickpea, pigeonpea and groundnut. We have identified a total of 21 potential drought-responsive NAC genes in these legumes. These genes displayed correlation between gene expression, transcriptional regulation, and better tolerance against drought. The identified candidate genes, after validation, may serve as a useful resource for molecular breeding for drought tolerance in the SAT legume crops.
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