ArticleMolecular horticulture2022
Yang cycle enzyme DEP1: its moonlighting functions in PSI and ROS production during leaf senescence.
Article in Molecular horticulture, 2022. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 4 papers.
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4 citing papers in PubMed, 7 citations in OpenAlex.
- The MdERF17-MdbHLH149 Module Mediates Ethylene-Induced Starch Degradation Through the Transcriptional Repression of α-Amylase MdAMY1 in Apple.Plant biotechnology journal · 2026Article
- Two DNA-binding One Zinc Finger transcription factors, MdCDOF3 and MdDOF3.6, accelerate leaf senescence by activatingHorticulture research · 2025Article
- The NAC transcription factor MdNAC4 positively regulates nitrogen deficiency-induced leaf senescence by enhancing ABA biosynthesis in apple.Molecular horticulture · 2023Article
- Recent progresses in molecular postharvest biology.Molecular horticulture · 2022Article
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Authors and funding
6 authors at 2 institutions in 2 countries.
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Abstract
Ethylene-mediated leaf senescence and the compromise of photosynthesis are closely associated but the underlying molecular mechanism is a mystery. Here we reported that apple DEHYDRATASE-ENOLASE-PHOSPHATASE-COMPLEX1 (MdDEP1), initially characterized to its enzymatic function in the recycling of the ethylene precursor SAM, plays a role in the regulation of photosystem I (PSI) activity, activating reactive oxygen species (ROS) homeostasis, and negatively regulating the leaf senescence. A series of Y2H, Pull-down, CO-IP and Cell-free degradation biochemical assays showed that MdDEP1 directly interacts with and dephosphorylates the nucleus-encoded thylakoid protein MdY3IP1, leading to the destabilization of MdY3IP1, reduction of the PSI activity, and the overproduction of ROS in plant cells. These findings elucidate a novel mechanism that the two pathways intersect at MdDEP1 due to its moonlighting role in destabilizing MdY3IP1, and synchronize ethylene-mediated leaf senescence and the compromise of photosynthesis.
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