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International Journal of Current Microbiology and Applied Sciences (IJCMAS)
IJCMAS is now DOI (CrossRef) registered Research Journal. The DOIs are assigned to all published IJCMAS Articles.
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National Academy of Agricultural Sciences (NAAS)
NAAS Score: *5.38 (2020)
[Effective from January 1, 2020]
For more details click here

ICV 2019: 96.39
Index Copernicus ICI Journals Master List 2019 - IJCMAS--ICV 2019: 96.39
For more details click here

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PRINT ISSN : 2319-7692
Online ISSN : 2319-7706
Issues : 12 per year
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Editor-in-chief: Dr.M.Prakash
Index Copernicus ICV 2018: 95.39
NAAS RATING 2020: 5.38

Int.J.Curr.Microbiol.App.Sci.2020.9(5): 2961-2971
DOI: https://doi.org/10.20546/ijcmas.2020.905.339


Epigenetics Mechanisms in Insects: A Review
Pirithiraj1, R. P. Soundararajan2* and C. Gailce Leo Justin1
1Anbil Dharmalingam Agricultural College and Research Institute,
Tiruchirappalli-620 027, India
2Horticultural College and Research Institute (Women), Tiruchirappalli-620 027, India
*Corresponding author
Abstract:

Epigenetics is the study of heritable changes in gene expression that do not involve changes in the underlying DNA sequence (or) a change in phenotype without a change in genotype. Phenotype is the observable or measurable characteristics of an organism i.e., height, behaviour, colour, shape, and size. Insects are being examined for their epigenetic phenomena and the underlying mechanism behind it. Epigenetics is well studied in fruit fly, Drosophila melanogaster. Gene is segments of the DNA sequence that store the information to synthesize proteins or RNAs that carry out specific functions. Epigenetics is important in cellular differentiation which is responsible for the phenotypic plasticity. Epigenetics is been investigated in plants and animals. On comparing other organisms insects possess a high degree of phenotypic variation. This variation is due to switch on and off mechanism of gene. Gene expression and repression in insects is regulated through epigenetic mechanisms i.e. DNA Methylation, Histone modification and Noncoding RNAs which influence the phenotypic modification. In recent days insects are used as models in studying epigenetics. RNA interference (RNAi), also known as RNA silencing, refers to a set of molecular processes in which noncoding RNA molecules target and silence the expression of specific nucleic acids. Silencing Dnmt3 expression in newly hatched honeybee larvae mimics the effect of royal jelly, namely, the larvae destined to become workers develop into queens with fully developed ovaries. The detailed mechanisms of epigenetics in insect were discussed in the paper.


Keywords: Epigenetics, Insects, DNA methylation, Histone modification and RNAi
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How to cite this article:

Pirithiraj, U., R. P. Soundararajan and Gailce Leo Justin, C. 2020. Epigenetics Mechanisms in Insects: A Review.Int.J.Curr.Microbiol.App.Sci. 9(5): 2961-2971. doi: https://doi.org/10.20546/ijcmas.2020.905.339