ArticleJournal of experimental botany2016
Functional characterization and hormonal regulation of the PHEOPHYTINASE gene LpPPH controlling leaf senescence in perennial ryegrass.
Article in Journal of experimental botany, 2016. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 29 papers.
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29 citing papers in PubMed, 70 citations in OpenAlex.
- Securing the replication ground: how barley stripe mosaic virus safeguards the host chloroplast envelope.The Plant cell · 2026Article
- LpCbDR1 regulates leaf senescence and drought tolerance by activating the chlorophyll b reductase gene and stress-related genes in perennial ryegrass.Horticulture research · 2026Article
- Temperature Dominates Light in Regulating Lycopene During a Critical Period in Postharvest Tomato Fruit.International journal of molecular sciences · 2026Article
- Chromosome-level genome assembly ofHorticulture research · 2026Article
- Genome-Wide Identification of thePlants (Basel, Switzerland) · 2026Article
- Mechanism of Penoxsulam's Effect on Chlorophyll Synthesis and the Metabolism of Foxtail Millet.Plants (Basel, Switzerland) · 2025Article
- Article
- Transcriptome-Wide Identification of Dark- and Salt-Induced Senescence-RelatedInternational journal of molecular sciences · 2024Article
- Exogenous Methyl Jasmonate Mediated MiRNA-mRNA Network Improves Heat Tolerance of Perennial Ryegrass.International journal of molecular sciences · 2023Article
- Proteasomal degradation of MaMYB60 mediated by the E3 ligase MaBAH1 causes high temperature-induced repression of chlorophyll catabolism and green ripening in banana.The Plant cell · 2023Article
- Genome-Wide Identification and Expression Analysis of Senescence-Associated Genes in Grapevine (International journal of molecular sciences · 2022Article
- The NAC factor LpNAL delays leaf senescence by repressing two chlorophyll catabolic genes in perennial ryegrass.Plant physiology · 2022Article
- Evolution of chlorophyll degradation is associated with plant transition to land.The Plant journal : for cell and molecular biology · 2022Article
- Genome-Wide Characterization and Expression Analysis of KH Family Genes Response to ABA and SA inInternational journal of molecular sciences · 2022Article
- Genome-Wide Identification and Characterization of theFrontiers in plant science · 2022Article
- Chitosan (CTS) Alleviates Heat-Induced Leaf Senescence in Creeping Bentgrass by Regulating Chlorophyll Metabolism, Antioxidant Defense, and the Heat Shock Pathway.Molecules (Basel, Switzerland) · 2021Article
- Characterization ofPlants (Basel, Switzerland) · 2021Article
- Melatonin Pretreatment Confers Heat Tolerance and Repression of Heat-Induced Senescence in Tomato Through the Modulation of ABA- and GA-Mediated Pathways.Frontiers in plant science · 2021Article
- Functional Characterization of the Pheophytinase Gene,Frontiers in plant science · 2021Article
- Natural variation of physiological traits, molecular markers, and chlorophyll catabolic genes associated with heat tolerance in perennial ryegrass accessions.BMC plant biology · 2020Article
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Authors and funding
6 authors at 2 institutions in 2 countries.
Funding
No grant is acknowledged in the PubMed record.
Abstract
Chlorophyll (Chl) degradation occurs naturally during leaf maturation and senescence, and can be induced by stresses, both processes involving the regulation of plant hormones. The objective of this study was to determine the functional roles and hormonal regulation of a gene encoding pheophytin pheophorbide hydrolyase (PPH) that catabolizes Chl degradation during leaf senescence in perennial grass species. A PPH gene, LpPPH, was cloned from perennial ryegrass (Lolium perenne L.). LpPPH was localized in the chloroplast. Overexpressing LpPPH accelerated Chl degradation in wild tobacco, and rescued the stay-green phenotype of the Arabidopsis pph null mutant. The expression level of LpPPH was positively related to the extent of leaf senescence. Exogenous application of abscisic acid (ABA) and ethephon (an ethylene-releasing agent) accelerated the decline in Chl content in leaves of perennial ryegrass, whereas cytokinin (CK) and aminoethoxyvinylglycine (AVG; an ethylene biosynthesis inhibitor) treatments suppressed leaf senescence, corresponding to the up- or down-regulation of LpPPH expression. The promoters of five orthologous PPH genes were predicted to share conserved cis-elements potentially recognized by transcription factors in the ABA and CK pathways. Taken together, the results suggested that LpPPH-mediated Chl breakdown could be regulated positively by ABA and ethylene, and negatively by CK, and LpPPH could be a direct downstream target gene of transcription factors in the ABA and CK signaling pathways.
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