ArticleThe Plant cell2009
Cellular pathways regulating responses to compatible and self-incompatible pollen in Brassica and Arabidopsis stigmas intersect at Exo70A1, a putative component of the exocyst complex.
Article in The Plant cell, 2009. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 135 papers.
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Who cites it
135 citing papers in PubMed, 281 citations in OpenAlex.
- Assessing the relative contributions of different Arabidopsis thaliana stigma factors to pollen hydration.Plant reproduction · 2026Article
- Molecular understanding of plant pollination, fertilization, seed development and protoplast regeneration.Science China. Life sciences · 2026Review
- Deciphering the Transcriptomic Dynamics of Self-Incompatibility in Yellow Passion Fruit: Evidence of Modified Sporophytic Mechanism.Plants (Basel, Switzerland) · 2026Article
- The Ubiquitin-Proteasome System in Flowering Plant Reproduction: Mechanisms, Functional Diversity, and Regulatory Networks.Plants (Basel, Switzerland) · 2026Review
- Several plant self-incompatibility systems may be controlled by atypical receptor-ligand interactions.The Plant journal : for cell and molecular biology · 2026Review
- From recognition to response: integrated signaling pathways determining pollen acceptance and rejection in Brassicaceae.The New phytologist · 2026Review
- Transcriptional signatures associated with female receptivity and longevity in genetically male-sterile wheat (Triticum aestivum L.).Scientific reports · 2026Article
- Plant cell surface receptors.The Plant journal : for cell and molecular biology · 2026Review
- Graft compatibility emerges from the balance between regeneration and immunity: lessons from plant-plant interactions.Frontiers in plant science · 2026Review
- Characterization of long non-coding RNAs during compatible and incompatible pollination inFrontiers in plant science · 2026Article
- Genome-wide identification of theFrontiers in plant science · 2026Article
- Characterization of self-incompatibility genes inFrontiers in plant science · 2026Article
- Transcriptome profiling of foxtail millet (Setaria italica) pollen and anther.BMC plant biology · 2024Article
- From lock and key to molecular diplomacy: understanding pollen recognition and discrimination in brassicaceae.Plant reproduction · 2024Review
- Genome-wide identification, transcript profiling and functional analyses of PCP gene family in Wucai (Brassica campestris).Scientific reports · 2024Article
- The Arabidopsis SNARE complex genes regulate the early stages of pollen-stigma interactions.Plant reproduction · 2024Article
- Investigating a role for PUB17 and PUB16 in the self-incompatibility signaling pathway in transgenicPlant direct · 2024Article
- The story of a decade: Genomics, functional genomics, and molecular breeding in Brassica napus.Plant communications · 2024Review
- Molecular insights into self-incompatibility systems: From evolution to breeding.Plant communications · 2024Review
- Transcriptomics reveal the involvement of reactive oxygen species production and sequestration during stigma development and pollination inForestry research · 2024Article
75 more citing papers are in PubMed but not listed here.
Corrections and comments
PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.
Authors and funding
6 authors at 1 institution in 1 country.
Funding
No grant is acknowledged in the PubMed record.
Abstract
In the Brassicaceae, compatible pollen-pistil interactions result in pollen adhesion to the stigma, while pollen grains from unrelated plant species are largely ignored. There can also be an additional layer of recognition to prevent self-fertilization, the self-incompatibility response, whereby self pollen grains are distinguished from nonself pollen grains and rejected. This pathway is activated in the stigma and involves the ARM repeat-containing 1 (ARC1) protein, an E3 ubiquitin ligase. In a screen for ARC1-interacting proteins, we have identified Brassica napus Exo70A1, a putative component of the exocyst complex that is known to regulate polarized secretion. We show through transgenic studies that loss of Exo70A1 in Brassica and Arabidopsis thaliana stigmas leads to the rejection of compatible pollen at the same stage as the self-incompatibility response. A red fluorescent protein:Exo70A1 fusion rescues this stigmatic defect in Arabidopsis and is found to be mobilized to the plasma membrane concomitant with flowers opening. By contrast, increased expression of Exo70A1 in self-incompatible Brassica partially overcomes the self pollen rejection response. Thus, our data show that the Exo70A1 protein functions at the intersection of two cellular pathways, where it is required in the stigma for the acceptance of compatible pollen in both Brassica and Arabidopsis and is negatively regulated by Brassica self-incompatibility.
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Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.