A Comparative Transcriptomic Meta-Analysis Revealed Conserved Key Genes and Regulatory Networks Involved in Drought Tolerance in Cereal Crops.
Binding Sites
Brachypodium
/ genetics
Databases, Genetic
Droughts
Edible Grain
/ genetics
Gene Expression Regulation, Plant
Gene Regulatory Networks
Hordeum
/ genetics
Oryza
/ genetics
Plant Proteins
/ genetics
Protein Interaction Maps
/ genetics
Sequence Analysis, RNA
Stress, Physiological
/ genetics
Transcription Factors
/ genetics
Zea mays
/ genetics
Brachypodium
barley
comparative transcriptomics
drought tolerance
maize
photosynthesis
rice
stay-green rice
transcription factors
Journal
International journal of molecular sciences
ISSN: 1422-0067
Titre abrégé: Int J Mol Sci
Pays: Switzerland
ID NLM: 101092791
Informations de publication
Date de publication:
02 Dec 2021
02 Dec 2021
Historique:
received:
30
09
2021
revised:
26
11
2021
accepted:
30
11
2021
entrez:
10
12
2021
pubmed:
11
12
2021
medline:
7
1
2022
Statut:
epublish
Résumé
Drought affects plant growth and development, causing severe yield losses, especially in cereal crops. The identification of genes involved in drought tolerance is crucial for the development of drought-tolerant crops. The aim of this study was to identify genes that are conserved key players for conferring drought tolerance in cereals. By comparing the transcriptomic changes between tolerant and susceptible genotypes in four Gramineae species, we identified 69 conserved drought tolerant-related (CDT) genes that are potentially involved in the drought tolerance of all of the analysed species. The CDT genes are principally involved in stress response, photosynthesis, chlorophyll biogenesis, secondary metabolism, jasmonic acid signalling, and cellular transport. Twenty CDT genes are not yet characterized and can be novel candidates for drought tolerance. The k-means clustering analysis of expression data highlighted the prominent roles of photosynthesis and leaf senescence-related mechanisms in differentiating the drought response between tolerant and sensitive genotypes. In addition, we identified specific transcription factors that could regulate the expression of photosynthesis and leaf senescence-related genes. Our analysis suggests that the balance between the induction of leaf senescence and maintenance of photosynthesis during drought plays a major role in tolerance. Fine-tuning of CDT gene expression modulation by specific transcription factors can be the key to improving drought tolerance in cereals.
Identifiants
pubmed: 34884864
pii: ijms222313062
doi: 10.3390/ijms222313062
pmc: PMC8657901
pii:
doi:
Substances chimiques
Plant Proteins
0
Transcription Factors
0
Types de publication
Comparative Study
Journal Article
Meta-Analysis
Langues
eng
Sous-ensembles de citation
IM
Subventions
Organisme : "Gruppi di Ricerca 2020" SMART-BREED Project A0375E0166, POR FESR LAZIO 2014-2020
ID : A0375E0166
Organisme : "Economia Circolare (Green & Circular Economy - GECE)" - FOE 2019 (MIUR), Decreto Ministeriale n. 856 del 10/10/2019
ID : Decreto Ministeriale n. 856 del 10/10/2019
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