ArticleThe Plant cell2023
Acetylation of inorganic pyrophosphatase by S-RNase signaling induces pollen tube tip swelling by repressing pectin methylesterase.
Article in The Plant cell, 2023. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 18 papers.
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Who cites it
18 citing papers in PubMed, 29 citations in OpenAlex.
- Chromosome doubling is associated with enhanced self-compatibility and transcriptional remodeling of pollen-pistil interactions in Lycium chinense.Plant cell reports · 2026Article
- The MdERF1B-MdWRKY75-MdSOS3 Module Confers Salt Tolerance by Regulating Sodium-Potassium Homoeostasis in Apple.Plant, cell & environment · 2026Article
- PbrFEN-1 positively regulates pear pollen tube growth and is involved in the self-incompatibility response.Plant reproduction · 2026Article
- Pectin dynamics of alfalfa pollen tube elongation in response to low boron based on proteomics.BMC plant biology · 2026Article
- A multi-layered disruption: how calcium, acidification, and ROS signals converge to shut down energy metabolism in incompatible pollen.The Plant cell · 2026Article
- PbrRALF5/10 prevents incompatible pollen tube death by reconstructing the methyl-esterified pectin and reactive oxygen species metabolism of pear in vitro.Plant molecular biology · 2025Article
- S-RNase-based self-incompatibility in angiosperms: Degradation, condensation, and evolution.Plant physiology · 2025Review
- Haplotype-resolved T2T genome assembly of the pear cultivar 'Danxiahong'.Scientific data · 2025Article
- PbrBGAL6 promotes pollen tube growth by influencing apical pectin level in Pyrus bretschneideri.BMC genomics · 2025Article
- An involvement of a new zinc finger protein PbrZFP719 into pear self-incompatibility reaction.Plant cell reports · 2025Article
- Transcriptome profiling of foxtail millet (Setaria italica) pollen and anther.BMC plant biology · 2024Article
- Effector CLas0185 targets methionine sulphoxide reductase B1 of Citrus sinensis to promote multiplication of 'Candidatus Liberibacter asiaticus' via enhancing enzymatic activity of ascorbate peroxidase 1.Molecular plant pathology · 2024Article
- PbrCSP1, a pollen tube-specific cold shock domain protein, is essential for the growth and cold resistance of pear pollen tubes.Molecular breeding : new strategies in plant improvement · 2024Article
- Ac-DEVD-CHO (caspase-3/DEVDase inhibitor) suppresses self-incompatibility-induced programmed cell death in the pollen tubes of petunia (Petunia hybrida E. Vilm.).Cell death discovery · 2024Article
- Pectin methylesterase 31 is transcriptionally repressed by ABI5 to negatively regulate ABA-mediated inhibition of seed germination.Frontiers in plant science · 2024Article
- Research overview on the genetic mechanism underlying the biosynthesis of polysaccharide in tuber plants.PeerJ · 2024Review
- Analysis of Genetic Diversity in Adzuki Beans (Plants (Basel, Switzerland) · 2023Article
- Pear pollen self-awareness is the result of acetylation of an inorganic pyrophosphatase leading to pollen tube tip swelling.The Plant cell · 2023Article
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Authors and funding
14 authors at 2 institutions in 2 countries.
Funding
No grant is acknowledged in the PubMed record.
Abstract
Self-incompatibility (SI) is a widespread genetically determined system in flowering plants that prevents self-fertilization to promote gene flow and limit inbreeding. S-RNase-based SI is characterized by the arrest of pollen tube growth through the pistil. Arrested pollen tubes show disrupted polarized growth and swollen tips, but the underlying molecular mechanism is largely unknown. Here, we demonstrate that the swelling at the tips of incompatible pollen tubes in pear (Pyrus bretschneideri [Pbr]) is mediated by the SI-induced acetylation of the soluble inorganic pyrophosphatase (PPA) PbrPPA5. Acetylation at Lys-42 of PbrPPA5 by the acetyltransferase GCN5-related N-acetyltransferase 1 (GNAT1) drives accumulation of PbrPPA5 in the nucleus, where it binds to the transcription factor PbrbZIP77, forming a transcriptional repression complex that inhibits the expression of the pectin methylesterase (PME) gene PbrPME44. The function of PbrPPA5 as a transcriptional repressor does not require its PPA activity. Downregulating PbrPME44 resulted in increased levels of methyl-esterified pectins in growing pollen tubes, leading to swelling at their tips. These observations suggest a mechanism for PbrPPA5-driven swelling at the tips of pollen tubes during the SI response. The targets of PbrPPA5 include genes encoding cell wall-modifying enzymes, which are essential for building a continuous sustainable mechanical structure for pollen tube growth.
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