Skip to main content
Log in

Variability of polyteny of giant chromosomes in Drosophila melanogaster salivary glands

  • Original Paper
  • Published:
Genetica Aims and scope Submit manuscript

Abstract

Polyteny is an effective mechanism for accelerating growth and enhancing gene expression in eukaryotes. The purpose of investigation was to study the genetic variability of polyteny degree of giant chromosomes in the salivary glands of Drosophila melanogaster Meig. in relation to the differential fitness of different genotypes. 16 strains, lines and hybrids of fruit flies were studied. This study demonstrates the significant influence of hereditary factors on the level of polytenization of giant chromosomes in Drosophila. This is manifested in the differences between strains and lines, the effect of inbreeding, chromosome isogenization, hybridization, adaptively significant selection, sexual differences, and varying degrees of individual variability of a trait in different strains, lines, and hybrids. The genetic component in the variability of the degree of chromosome polyteny in Drosophila salivary glands was 45.3%, the effect of sex was 9.5%. It has been shown that genetic distances during inbreeding, outbreeding or hybridization, which largely determine the selective value of different genotypes, also affect polyteny patterns. Genetic, humoral, and epigenetic aspects of endocycle regulation, which may underlie the variations in the degree of chromosome polyteny, as well as the biological significance of the phenomenon of endopolyploidy, are discussed.

This is a preview of subscription content, log in via an institution to check access.

Access this article

Price excludes VAT (USA)
Tax calculation will be finalised during checkout.

Instant access to the full article PDF.

Fig. 1
Fig. 2
Fig. 3
Fig. 4
Fig. 5

Similar content being viewed by others

Abbreviations

C V :

Coefficient of variation

ES:

Ecdysterone

HSP:

Heat shock proteins

IIS:

Insulin/insulin-like growth factor

JH:

Juvenile hormone

SSD:

Sexual size dimorphism

EGFR/MAPK:

Epidermal growth factor receptor/mitogen-activated protein kinase

Hpo/Yki:

Hippo/Yorkie

JAK/STAT:

Janus kinases/signal transducer and activator of transcription proteins

JNK:

C-Jun N-terminal kinases

PI3K/TOR:

Phosphoinositide-3-kinase/target of rapamycin

References

Download references

Acknowledgements

This work was supported by the Ministry of Education and Science of Ukraine (Project State Registration Number: 0117U004836).

Author information

Authors and Affiliations

Authors

Contributions

All authors contributed to the conception and design. All authors participated in data collection and analysis. VYS wrote the first draft of the manuscript. All authors commented on previous versions, read and approved the final manuscript.

Corresponding author

Correspondence to Volodymyr Yu. Strashnyuk.

Ethics declarations

Conflict of interest

The authors declare that they have no conflict of interest.

Additional information

Publisher's Note

Springer Nature remains neutral with regard to jurisdictional claims in published maps and institutional affiliations.

Supplementary Information

Below is the link to the electronic supplementary material.

Supplementary file1 (DOCX 28 KB)

Rights and permissions

Springer Nature or its licensor holds exclusive rights to this article under a publishing agreement with the author(s) or other rightsholder(s); author self-archiving of the accepted manuscript version of this article is solely governed by the terms of such publishing agreement and applicable law.

Reprints and permissions

About this article

Check for updates. Verify currency and authenticity via CrossMark

Cite this article

Strashnyuk, V.Y., Shakina, L.A. & Skorobagatko, D.A. Variability of polyteny of giant chromosomes in Drosophila melanogaster salivary glands. Genetica 151, 75–86 (2023). https://doi.org/10.1007/s10709-022-00168-4

Download citation

  • Received:

  • Accepted:

  • Published:

  • Issue Date:

  • DOI: https://doi.org/10.1007/s10709-022-00168-4

Keywords

Navigation