ArticleFrontiers in plant science2016
Characterization of Rice Homeobox Genes, OsHOX22 and OsHOX24, and Over-expression of OsHOX24 in Transgenic Arabidopsis Suggest Their Role in Abiotic Stress Response.
Article in Frontiers in plant science, 2016. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 30 papers.
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30 citing papers in PubMed, 77 citations in OpenAlex.
- Genome-Wide Meta-QTL Analysis and InDel Markers for Salt Tolerance in Rice: Bridging the Gap from Genomics to Breeding.Rice (New York, N.Y.) · 2026Article
- Meta-QTL and ortho analysis unravels the genetic architecture and key candidate genes for cold tolerance at seedling stage in rice.Physiology and molecular biology of plants : an international journal of functional plant biology · 2024Article
- Transcriptional survey of abiotic stress response in maize (AoB PLANTS · 2024Article
- Evolutionary Consequences of Functional and Regulatory Divergence of HD-Zip I Transcription Factors as a Source of Diversity in Protein Interaction Networks in Plants.Journal of molecular evolution · 2023Review
- Unravelling the molecular mechanism underlying drought stress response in chickpeaFrontiers in plant science · 2023Article
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- Identification and characterization of stress responsive homeodomain leucine zipper transcription factors in Medicago truncatula.Molecular biology reports · 2022Article
- Genome-wide analysis of the homeodomain-leucine zipper family inFrontiers in plant science · 2022Article
- Genome-Wide Analysis of KNOX Transcription Factors and Expression Pattern of Dwarf-RelatedFrontiers in plant science · 2022Article
- Expression analysis of miRNAs and their putative target genes confirm a preponderant role of transcription factors in the early response of oil palm plants to salinity stress.BMC plant biology · 2021Article
- Genome-Wide Analysis of the Homeobox Gene Family and Identification of Drought-Responsive Members inPlants (Basel, Switzerland) · 2021Article
- Transcription Factors Interact with ABA through Gene Expression and Signaling Pathways to Mitigate Drought and Salinity Stress.Biomolecules · 2021Review
- Plant Transcription Factors Involved in Drought and Associated Stresses.International journal of molecular sciences · 2021Review
- Article
- A moso bamboo transcription factor, Phehdz1, positively regulates the drought stress response of transgenic rice.Plant cell reports · 2021Article
- Article
- Genome-wide discovery of OsHOX24-binding sites and regulation of desiccation stress response in rice.Plant molecular biology · 2021Article
- Promoter Architecture and Transcriptional Regulation of Genes Upregulated in Germination and Coleoptile Elongation of Diverse Rice Genotypes Tolerant to Submergence.Frontiers in genetics · 2021Article
- The Effect of Drought on Transcriptome and Hormonal Profiles in Barley Genotypes With Contrasting Drought Tolerance.Frontiers in plant science · 2020Article
- TaARF4 genes are linked to root growth and plant height in wheat.Annals of botany · 2019Article
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Authors and funding
3 authors at 2 institutions in 1 country.
Funding
No grant is acknowledged in the PubMed record.
Abstract
Homeobox transcription factors are well known regulators of plant growth and development. In this study, we carried out functional analysis of two candidate stress-responsive HD-ZIP I class homeobox genes from rice, OsHOX22, and OsHOX24. These genes were highly up-regulated under various abiotic stress conditions at different stages of rice development, including seedling, mature and reproductive stages. The transcript levels of these genes were enhanced significantly in the presence of plant hormones, including abscisic acid (ABA), auxin, salicylic acid, and gibberellic acid. The recombinant full-length and truncated homeobox proteins were found to be localized in the nucleus. Electrophoretic mobility shift assay established the binding of these homeobox proteins with specific DNA sequences, AH1 (CAAT(A/T)ATTG) and AH2 (CAAT(C/G)ATTG). Transactivation assays in yeast revealed the transcriptional activation potential of full-length OsHOX22 and OsHOX24 proteins. Homo- and hetero-dimerization capabilities of these proteins have also been demonstrated. Further, we identified putative novel interacting proteins of OsHOX22 and OsHOX24 via yeast-two hybrid analysis. Over-expression of OsHOX24 imparted higher sensitivity to stress hormone, ABA, and abiotic stresses in the transgenic Arabidopsis plants as revealed by various physiological and phenotypic assays. Microarray analysis revealed differential expression of several stress-responsive genes in transgenic lines as compared to wild-type. Many of these genes were found to be involved in transcriptional regulation and various metabolic pathways. Altogether, our results suggest the possible role of OsHOX22/OsHOX24 homeobox proteins as negative regulators in abiotic stress responses.
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