Cited by 41Plant Stress Responses and TolerancePlant Molecular Biology ResearchGenetic and Environmental Crop Studies

A comparative transcriptomic meta-analysis revealed conserved key genes and regulatory networks involved in drought tolerance in cereal crops

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Baldoni, Elena, Frugis, Giovanna, Martinelli, Federico, Benny, Jubina, Paffetti, Donatella, Buti, Matteo·2021·International Journal of Molecular Sciences

Abstract

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.

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  • HSP70 genes are crucial for heat tolerance in various cereal crops.

    “Several HSP-encoding genes, including HSP70, have been identified as crucial for heat tolerance in various cereal crops (Baldoni et al., 2021).”

    From Emerging applications of gene editing technologies for the development of climate-resilient crops (2025) · cites this paper as Baldoni et al., 2021

    Results §2.5 identifies HSP70 and OsHsp60-1 as heat-shock-protein-encoding genes involved in abiotic stress responses. But the analysis concerns drought tolerance across cereal species; the cited passage does not establish that these genes are crucial for heat tolerance. (LLM, conf=0.88)

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Authors
Baldoni, E., Frugis, G., Martinelli, F., Benny, J., Paffetti, D., & Buti, M.
Affiliations
  • Istituto di Biologia e Biotecnologia Agraria (IT)
  • University of Florence (IT)
  • University of Palermo (IT)
Corresponding author
  • Baldoni, Elena
  • Buti, Matteo
Venue
International Journal of Molecular Sciences
Publisher
MDPI AG
Published
2021-12-02
Volume
22
Issue
23
Pages
13062
ISSN
1422-0067 (ISSN-L)
OpenAlex
W3216921533
Cited by
41
References
111
Citations by year
2026: 7 · 2025: 13 · 2024: 6 · 2023: 8 · 2022: 7
FWCI
3.15
Type
journal article
Language
en
Open access
Locations
  • International Journal of Molecular Sciences (publishedVersion, cc-by)
  • PubMed Central (publishedVersion, cc-by)
  • PubMed (publishedVersion)
  • Florence Research (University of Florence) (submittedVersion, cc-by)
  • DOAJ (DOAJ: Directory of Open Access Journals) (submittedVersion, cc-by-sa)
Funders
  • “Gruppi di Ricerca 2020” SMART-BREED Project A0375E0166, POR FESR LAZIO 2014-2020 (A0375E0166)
  • “Economia Circolare (Green & Circular Economy ‐ GECE)” - FOE 2019 (MIUR), Decreto Ministeriale n. 856 del 10/10/2019 (Decreto Ministeriale n. 856 del 10/10/2019)
Topics
  • Life Sciences › Agricultural and Biological Sciences › Plant Science › Plant Stress Responses and Tolerance
  • Life Sciences › Agricultural and Biological Sciences › Plant Science › Plant Molecular Biology Research
  • Life Sciences › Agricultural and Biological Sciences › Plant Science › Genetic and Environmental Crop Studies
Keywords
drought tolerance, cereals, Poaceae, photosynthesis, leaf senescence, jasmonic acid signaling, chlorophyll biosynthesis, secondary metabolism, transcription factors, gene regulatory networks, comparative transcriptomics
MeSH terms
Hordeum, Binding Sites, Edible Grain, Zea mays, Plant Proteins, Oryza, Stress, Physiological, Transcription Factors, Sequence Analysis, RNA, Gene Expression Regulation, Plant, Databases, Genetic, Gene Regulatory Networks, Droughts, Brachypodium, Protein Interaction Maps

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