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ABSTRACT: Background
Drought is a major environmental stress that affects crop productivity worldwide. Although previous research demonstrated links between strigolactones (SLs) and drought, here we used barley (Hordeum vulgare) SL-insensitive mutant hvd14 (dwarf14) to scrutinize the SL-dependent mechanisms associated with water deficit response.Results
We have employed a combination of transcriptomics, proteomics, phytohormonomics analyses, and physiological data to unravel differences between wild-type and hvd14 plants under drought. Our research revealed that drought sensitivity of hvd14 is related to weaker induction of abscisic acid-responsive genes/proteins, lower jasmonic acid content, higher reactive oxygen species content, and lower wax biosynthetic and deposition mechanisms than wild-type plants. In addition, we identified a set of transcription factors (TFs) that are exclusively drought-induced in the wild-type barley.Conclusions
Critically, we resolved a comprehensive series of interactions between the drought-induced barley transcriptome and proteome responses, allowing us to understand the profound effects of SLs in alleviating water-limiting conditions. Several new avenues have opened for developing barley more resilient to drought through the information provided. Moreover, our study contributes to a better understanding of the complex interplay between genes, proteins, and hormones in response to drought, and underscores the importance of a multidisciplinary approach to studying plant stress response mechanisms.
SUBMITTER: Daszkowska-Golec A
PROVIDER: S-EPMC10515045 | biostudies-literature | 2023 Sep
REPOSITORIES: biostudies-literature
Daszkowska-Golec Agata A Mehta Devang D Uhrig R Glen RG Brąszewska Agnieszka A Novak Ondrej O Fontana Irene M IM Melzer Michael M Płociniczak Tomasz T Marzec Marek M
BMC plant biology 20230922 1
<h4>Background</h4>Drought is a major environmental stress that affects crop productivity worldwide. Although previous research demonstrated links between strigolactones (SLs) and drought, here we used barley (Hordeum vulgare) SL-insensitive mutant hvd14 (dwarf14) to scrutinize the SL-dependent mechanisms associated with water deficit response.<h4>Results</h4>We have employed a combination of transcriptomics, proteomics, phytohormonomics analyses, and physiological data to unravel differences be ...[more]