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Nucleoli migration coupled with cytomixis

  • Puneet Kumar EMAIL logo and Vijay Kumar Singhal
Published/Copyright: July 14, 2016
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Biologia
From the journal Biologia Volume 71 Issue 6

Abstract

Nucleolus was regarded as a mere ribosome-producing factory for many decades however, in the past two decades; this has come to the light that it is a plurifunctional nuclear domain which plays vital role in many cellular processes. Despite many advances, much remains to be revealed about the nucleolus association with cellular processes. While exploring the chromosomal diversity in the high altitude plants of the Indian cold desert region in North West Himalayas we came across 140 wild plants, out of these, pollen mother cell (PMC) in 31 plants showed the occurrence of additional nucleoli. Coincidently, all these plants also depicted the phenomenon of cytomixis i.e. inter-PMC chromatin material extrusion/transfer among/between adjacent meiocytes. Interestingly, it was noticed that nucleolus accompanied the chromatin material during process of cytomixis. During, and after the migration of nucleolus, change in its shape, size and number has also been discussed. So the current paper here in correlated the inter-PMC migration of nucleolus to the occurrence of cytomixis.

Keywords: additional nucleoli; chromatin migration; cytoplasmic channels; cytomixis; hypo- and hyperploid meiocytes

Acknowledgements

The authors are thankful to the University Grants Commission (UGC), New Delhi, for providing financial assistance under the DRS SAP I, II & III, ASIST programme, and Dr. D.S. Kothari Postdoctoral Fellowship to Dr. Puneet Kumar [award letter no. F.4-2/2006(BSR)/13-427/2011(BSR)]. The authors are very grateful to the head of the Department of Botany, Punjabi University, Patiala and Dr. Paramjit Singh, Director, Botanical Survey of India, Headquarters Kolkata and Joint Director, Dr. S.K. Srivastava, NRC, Dehradun, for necessary laboratory, library and internet facilities.

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Received: 2016-3-9
Accepted: 2016-5-20
Published Online: 2016-7-14
Published in Print: 2016-6-1

©2016 Institute of Botany, Slovak Academy of Sciences

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https://doi.org/10.1515/biolog-2016-0076
Keywords for this article
additional nucleoli; chromatin migration; cytoplasmic channels; cytomixis; hypo- and hyperploid meiocytes

Articles in the same Issue

  1. Cellular and Molecular Biology
  2. Molecular detection of Mycobacterium tuberculosis complex in the 8th century skeletal remains from the territory of Slovakia
  3. Cellular and Molecular Biology
  4. First report of microorganisms of Caucasus glaciers (Georgia)
  5. Cellular and Molecular Biology
  6. Codon optimization of Aspergillus niger feruloyl esterase and its expression in Pichia pastoris
  7. Botany
  8. Response of lichens Cladonia arbuscula subsp. mitis and Cladonia furcata to nitrogen excess
  9. Botany
  10. No confirmation for previously suggested presence of diploid cytotypes of Sesleria (Poaceae) on the Balkan Peninsula
  11. Botany
  12. RCD1 homologues and their constituent WWE domain in plants: analysis of conservation through phylogeny methods
  13. Botany
  14. Nucleoli migration coupled with cytomixis
  15. Cellular and Molecular Biology
  16. Evaluation of appropriate reference gene for normalization of microRNA expression by real-time PCR in Lablab purpureus under abiotic stress conditions
  17. Zoology
  18. The fractal nature of the latitudinal biodiversity gradient
  19. Zoology
  20. A new species of Neoribates (Neoribates) (Acari: Oribatida: Parakalummidae) with key to the Neotropical species of the subgenus
  21. Zoology
  22. Diversity patterns of aquatic specialists and generalists: contrasts among two spring-fen mesohabitats and nearby streams
  23. Zoology
  24. Heteroptera (Insecta: Hemiptera) of the peat bogs of Belarusian Lakeland
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  26. Cloning of monoacylglycerol o-acyltransferase 2 cDNA from a silkworm, Bombyx mori
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  28. Biological aspect of the surface structure of the tongue in the adult red kangaroo (Macropus rufus) — light and scanning electron microscopy
  29. Zoology
  30. Status of the rose-ringed parakeet Psittacula krameri in Lisbon, Portugal
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  32. Considerations on the vulnerability of the Eurasian water shrew Neomys fodiens to the presence of introduced brown trout Salmo trutta
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