ArticleBMC plant biology2021
Regulation of wound ethylene biosynthesis by NAC transcription factors in kiwifruit.
Article in BMC plant biology, 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 11 papers.
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11 citing papers in PubMed, 36 citations in OpenAlex.
- The aldehyde (ALD) locus controls C6-aldehyde production in kiwifruit and affects consumer perception of fruit aroma.Plant physiology · 2025Article
- Spatial regulation of chlorophyll degradation in kiwifruit: AcNAC2-AcSGR1/2 cascades mediate rapid de-greening in the inner pericarp.Plant biotechnology journal · 2025Article
- Transcriptome Analysis Unveils the Molecular Mechanisms of Ethylene-Induced Ready-to-Eat Kiwifruit-Picking Ripening.Foods (Basel, Switzerland) · 2025Article
- The triggering mechanism for predominant hormonal signal production in fleshy fruit ripening.Molecular horticulture · 2025Review
- Identification of lineage-specific cis-trans regulatory networks related to kiwifruit ripening initiation.The Plant journal : for cell and molecular biology · 2024Article
- Identification ofPhysiology and molecular biology of plants : an international journal of functional plant biology · 2024Article
- The Ethylene Biosynthetic Enzymes, 1-Aminocyclopropane-1-Carboxylate (ACC) Synthase (ACS) and ACC Oxidase (ACO): The Less Explored Players in Abiotic Stress Tolerance.Biomolecules · 2024Review
- MaDREB1F confers cold and drought stress resistance through common regulation of hormone synthesis and protectant metabolite contents in banana.Horticulture research · 2023Article
- The NAC transcription factors play core roles in flowering and ripening fundamental to fruit yield and quality.Frontiers in plant science · 2023Review
- Alcohol acyl transferase genes at a high-flavor intensity locus contribute to ester biosynthesis in kiwifruit.Plant physiology · 2022Article
- Review
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9 authors at 3 institutions in 2 countries.
Funding
Abstract
backgroundThe phytohormone ethylene controls many processes in plant development and acts as a key signaling molecule in response to biotic and abiotic stresses: it is rapidly induced by flooding, wounding, drought, and pathogen attack as well as during abscission and fruit ripening. In kiwifruit (Actinidia spp.), fruit ripening is characterized by two distinct phases: an early phase of system-1 ethylene biosynthesis characterized by absence of autocatalytic ethylene, followed by a late burst of autocatalytic (system-2) ethylene accompanied by aroma production and further ripening. Progress has been made in understanding the transcriptional regulation of kiwifruit fruit ripening but the regulation of system-1 ethylene biosynthesis remains largely unknown. The aim of this work is to better understand the transcriptional regulation of both systems of ethylene biosynthesis in contrasting kiwifruit organs: fruit and leaves.
resultsA detailed molecular study in kiwifruit (A. chinensis) revealed that ethylene biosynthesis was regulated differently between leaf and fruit after mechanical wounding. In fruit, wound ethylene biosynthesis was accompanied by transcriptional increases in 1-aminocyclopropane-1-carboxylic acid (ACC) synthase (ACS), ACC oxidase (ACO) and members of the NAC class of transcription factors (TFs). However, in kiwifruit leaves, wound-specific transcriptional increases were largely absent, despite a more rapid induction of ethylene production compared to fruit, suggesting that post-transcriptional control mechanisms in kiwifruit leaves are more important. One ACS member, AcACS1, appears to fulfil a dominant double role; controlling both fruit wound (system-1) and autocatalytic ripening (system-2) ethylene biosynthesis. In kiwifruit, transcriptional regulation of both system-1 and -2 ethylene in fruit appears to be controlled by temporal up-regulation of four NAC (NAM, ATAF1/2, CUC2) TFs (AcNAC1-4) that induce AcACS1 expression by directly binding to the AcACS1 promoter as shown using gel-shift (EMSA) and by activation of the AcACS1 promoter in planta as shown by gene activation assays combined with promoter deletion analysis.
conclusionsOur results indicate that in kiwifruit the NAC TFs AcNAC2-4 regulate both system-1 and -2 ethylene biosynthesis in fruit during wounding and ripening through control of AcACS1 expression levels but not in leaves where post-transcriptional/translational regulatory mechanisms may prevail.
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