ArticlePlant cell reports2024
OsCactin positively regulates the drought stress response in rice.
Article in Plant cell reports, 2024. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 3 papers.
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Who cites it
3 citing papers in PubMed.
- Genome-Wide Identification of thePlants (Basel, Switzerland) · 2026Article
- The Structure, Classification, Functional Diversity and Regulatory Mechanism of Plant C2H2 Transcription Factors.Biology · 2026Review
- Drought-Induced Zinc Finger Transcription Factor OsDi19-3 Positively Regulates Drought Stress Acclimatization in Rice (Plants (Basel, Switzerland) · 2025Article
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Authors and funding
10 authors.
Funding
Abstract
key messageOsCactinpositively regulates drought tolerance in rice. OsCactin is regulated by OsTRAB1 and interacts with OsDi19 proteins to defend against drought stress. Drought stress significantly limits plant growth and production. Cactin, a CactinC_cactus domain-containing protein encoded by a highly conserved single-copy gene prevalent across the eukaryotic kingdom, is known to play diverse roles in fundamental biological processes. However, its function in rice drought tolerance remains poorly understood. In this study, with its overexpression and knockout rice lines in both a pot drought experiment and a PEG drought-simulation test, OsCactin was found to positively regulate rice drought tolerance during the rice seedling stage. The OsCactin-overexpressing lines presented high tolerance to drought stress, whereas the OsCactin-knockout plants were sensitive to drought stress. OsCactin was localized in the nucleus, and was predominantly expressed in the leaves and panicles at the seedling and booting stages, respectively. Furthermore, OsTRAB1, a drought-responsive TF of the bZIP family, binds to the promoter of OsCactin as a drought-responsive regulator. OsDi19 proteins, the Cys2/His2 (C2H2)-type zinc finger TFs from the drought-induced 19 family, interact with OsCactin both in vitro and in vivo. Our results provide new insights into the intricate mechanisms by which OsCactin regulates the rice drought stress response, which may contribute to the design of molecular breeding methods for rice.
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