ArticleBMC plant biology2017
RhMKK9, a rose MAP KINASE KINASE gene, is involved in rehydration-triggered ethylene production in rose gynoecia.
Article in BMC plant biology, 2017. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 12 papers.
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12 citing papers in PubMed, 29 citations in OpenAlex.
- Petal senescence in cut roses.Horticulture research · 2026Article
- Engineering resilient roses: molecular insights into biotic and abiotic stress adaptation.Horticulture research · 2026Article
- Drought Stress in Roses: A Comprehensive Review of Morphophysiological, Biochemical, and Molecular Responses.International journal of molecular sciences · 2025Review
- Comprehensive transcriptome analysis of AP2/ERFs inFrontiers in plant science · 2024Article
- Ethylene Response Factor LlERF110 Mediates Heat Stress Response via Regulation ofInternational journal of molecular sciences · 2022Article
- Insights into the Genomic Regions and Candidate Genes of Senescence-Related Traits in Upland Cotton via GWAS.International journal of molecular sciences · 2022Article
- Mitogen-Activated Protein Kinase and Substrate Identification in Plant Growth and Development.International journal of molecular sciences · 2022Review
- The involvement of gaseous signaling molecules in plant MAPK cascades: function and signal transduction.Planta · 2021Review
- Molecular understanding of postharvest flower opening and senescence.Molecular horticulture · 2021Review
- Genome-Wide Identification and Analysis ofInternational journal of molecular sciences · 2021Article
- ROS Homeostasis in Abiotic Stress Tolerance in Plants.International journal of molecular sciences · 2020Review
- Mitogen-Activated Protein Kinase Cascades in Plant Hormone Signaling.Frontiers in plant science · 2018Review
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12 authors at 4 institutions in 1 country.
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Abstract
backgroundFlower opening is an important process in the life cycle of flowering plants and is influenced by various endogenous and environmental factors. Our previous work demonstrated that rose (Rosa hybrida) flowers are highly sensitive to dehydration during flower opening and the water recovery process after dehydration induced ethylene production rapidly in flower gynoecia. In addition, this temporal- and spatial-specific ethylene production is attributed to a transient but robust activation of the rose MAP KINASE6-ACC SYNTHASE1 (RhMPK6-RhACS1) cascade in gynoecia. However, the upstream component of RhMPK6-RhACS1 is unknown, although RhMKK9 (MAP KINASE KINASE9), a rose homologue of Arabidopsis MKK9, could activate RhMPK6 in vitro. In this study, we monitored RhMKK2/4/5/9 expression, the potential upstream kinase to RhMPK6, in rose gynoecia during dehydration and rehydration.
resultsWe found only RhMKK9 was rapidly and strongly induced by rehydration. Silencing of RhMKK9 significantly decreased rehydration-triggered ethylene production. Consistently, the expression of several ethylene-responsive genes was down regulated in the petals of RhMKK9-silenced flowers. Moreover, we detected the DNA methylation level in the promoter and gene body of RhMKK9 by Chop-PCR. The results showed that rehydration specifically elevated the DNA methylation level on the RhMKK9 gene body, whereas it resulted in hypomethylation in its promoter.
conclusionsOur results showed that RhMKK9 possibly acts as the upstream component of the RhMKK9-RhMPK6-RhACS1 cascade and is responsible for water recovery-triggered ethylene production in rose gynoecia, and epigenetic DNA methylation is involved in the regulation of RhMKK9 expression by rehydration.
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