ArticleSexual plant reproduction2004
gemini pollen 2, a male and female gametophytic cytokinesis defective mutation.
Article in Sexual plant reproduction, 2004. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 12 papers.
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Who cites it
12 citing papers in PubMed, 36 citations in OpenAlex.
- Molecular understanding of plant pollination, fertilization, seed development and protoplast regeneration.Science China. Life sciences · 2026Review
- In Vitro Live Cell Imaging Reveals Nuclear Dynamics and Role of the Cytoskeleton During Asymmetric Division of Pollen Mitosis I in Nicotiana Benthamiana.Cytoskeleton (Hoboken, N.J.) · 2026Article
- From gametes to zygote: Mechanistic advances and emerging possibilities in plant reproduction.Plant physiology · 2024Review
- Pollen-Specific Protein PSP231 Activates Callose Synthesis to Govern Male Gametogenesis and Pollen Germination.Plant physiology · 2020Article
- A Conserved cis-Regulatory Module Determines Germline Fate through Activation of the Transcription Factor DUO1 Promoter.Plant physiology · 2017Article
- An EAR-Dependent Regulatory Module Promotes Male Germ Cell Division and Sperm Fertility in Arabidopsis.The Plant cell · 2014Article
- Wide-scale screening of T-DNA lines for transcription factor genes affecting male gametophyte development in Arabidopsis.Sexual plant reproduction · 2012Article
- Male gametogenesis and germline specification in flowering plants.Sexual plant reproduction · 2011Review
- Nuclear behavior, cell polarity, and cell specification in the female gametophyte.Sexual plant reproduction · 2011Review
- RA68 is required for postmeiotic pollen development in Oryza sativa.Plant molecular biology · 2010Article
- Arabidopsis DUO POLLEN3 is a key regulator of male germline development and embryogenesis.The Plant cell · 2009Article
- Transcriptome analysis of haploid male gametophyte development in Arabidopsis.Genome biology · 2004Article
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Authors and funding
4 authors at 1 institution in 2 countries.
Funding
Abstract
Gametophytic cytokinesis is essential for the development and function of the male and female gametophytes. We have previously described the isolation and characterisation of the gemini pollen 1 (gem1) that acts gametophytically to disturb asymmetric division and cytokinesis at pollen mitosis I in Arabidopsis. Here we describe the genetic and cytological analysis of an independent gametophytic mutant, gem2, with similar characteristics to gem1, but which maps to a different genetic locus. gem2 shows reduced genetic transmission through both male and female gametes and leads to the production of divided or twin-celled pollen. Developmental analysis revealed that gem2 does not affect karyokinesis at pollen mitosis I, but leads to repositioning of the cell plate and partial or complete failure of cytokinesis, resulting in symmetrical divisions or binucleate pollen grains respectively. Symmetrical divisions lead to altered pollen cell fate with both sister cells displaying vegetative cell fate. Moreover, we demonstrate that the predominant female defect in gem2 is a lack of cellularization of the embryo sac during megagametogenesis. GEM2 therefore defines an independent genetic locus that is involved in the correct specification of both male and female gametophytic cytokinesis.
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Registered trials
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.