Most of Tobacco Male Meiocytes Are Involved in Intercellular Nuclear Migration at the First Meiotic Prophase
Mursalimov, S.; Ohno, N.; Matsumoto, M.; Bayborodin, S.; Deineko, E.
Show abstract
Serial block-face scanning electron microscopy was used here to study tobacco male meiosis. Three-dimensional ultrastructural analyses revealed that intercellular nuclear migration (INM) occurs in 90-100% of tobacco meiocytes. At the very beginning of meiosis, every meiocyte connected with neighboring cells by more than 100 channels was capable of INM. At leptotene and zygotene, the nucleus in most tobacco meiocytes approached the cell wall and formed nuclear protuberances (NPs) that crossed the cell wall through the channels and got into the cytoplasm of a neighboring cell. The NPs did not separate from the migrating nuclei and never produced micronuclei. Approximately 70% of NPs reached nuclei of neighboring cells. The NPs and the nuclei they reached got very close, and the gap between their nuclear membranes became indistinguishable in some cases. At pachytene, NPs detached from the nuclei of neighboring cells and came back into their own cells. After that, the INM stopped. The reason for such behavior of nuclei is unclear. INM probably causes a short-lived fusion of two nuclei and thus has a potential to form aneuploid or unreduced pollen. We consider INM a normal part of tobacco meiosis.Competing Interest StatementThe authors have declared no competing interest.View Full Text
Matching journals
The top 7 journals account for 50% of the predicted probability mass.
Similar papers in this journal
- Elongation of stigmatic papillae induced by heat stress is associated with disturbance of pollen attachment in Arabidopsis thaliana 93%
- Diploid male gametes circumvent hybrid sterility between Asian and African rice species 93%
- A comprehensive toolkit for quick and easy visualization of marker proteins, protein-protein interactions and cell morphology in Marchantia polymorpha. 93%
Similar papers in this journal
- KAKU4-mediated deformation of the vegetative nucleus controls its precedent migration over sperm cells in pollen tubes 95%
- DNA replication and chromosome positioning throughout the interphase in three-dimensional space of plant nuclei 94%
- High throughput isolation of male gametophyte cells of Solanum lycopersicum var. Micro-Tom by fluorescence-activated cell sorting. 94%
Similar papers in this journal
- Near-infrared imaging of phytochrome-derived autofluorescence in plant nuclei 94%
- Ploidy-specific transcriptomes shed light on the heterogeneous identity and metabolism of developing pericarp cells 93%
- Probing the in-situ volumes of Arabidopsis leaf plastids using 3D confocal and scanning electron microscopy 93%
Similar papers in this journal
- Somatic cell nuclear transfer in non-enucleated goldfish oocytes: understanding DNA fate during meiosis resumption and first cellular division. 92%
- Transcriptional Activation of Arabidopsis Zygotes Is Required for Their Initial Division 91%
- Unraveling Cross-Cellular Communication in Cannabis sativa Sex Determination: A Network Ontology Transcript Annotation (Nota) Analysis. 91%
Similar papers in this journal
"Similar papers" are the closest papers from that journal in the model's embedding space. They show what the match is built on, but the ranking comes mostly from a classifier over the whole training set, not from these examples alone.