ArticleChromosoma2009
The amount of heterochromatic proteins in the egg is correlated with sex determination in Planococcus citri (Homoptera, Coccoidea).
Article in Chromosoma, 2009. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 4 papers.
What it found
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The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.
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Who cites it
4 citing papers in PubMed, 8 citations in OpenAlex.
- Essential roles of histone lysine methyltransferases EZH2 and EHMT1 in male embryo development of Phenacoccus solenopsis.Communications biology · 2024Article
- Article
- Mealybug chromosome cycle as a paradigm of epigenetics.Genetics research international · 2012Article
- Temperature, age of mating and starvation determine the role of maternal effects on sex allocation in the mealybug Planococcus citri.Behavioral ecology and sociobiology · 2011Article
Corrections and comments
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Authors and funding
3 authors at 1 institution in 1 country.
Funding
No grant is acknowledged in the PubMed record.
Abstract
In the mealybug Planococcus citri, there are no identifiable sex chromosomes. Early in the development of embryos destined to become males, the genome contributed by the sperm undergoes heterochromatization and, following an inverted type of meiosis, will be eliminated. Only two vital sperms are therefore produced, both carrying the same maternally derived genome. A differential distribution observed on the two spermatids during male germline cyst formation of chromatin remodeling factors such as HP1 and methylated K9 histone H3 prompted us to propose an imprinting/sex determination model in which the imprinted sperm is the one to undergo heterochromatization at syngamy. The sex ratio is normally 1:1, but aged females are known to produce almost exclusively male progeny, suggesting that the imprinting pattern of the male gamete in P. citri, though necessary, is apparently not sufficient for sex determination. We report here that egg cells of aged females show larger amounts of HP1 and Su(Var)3-9 than egg cells of young females. These data suggest that a determinant of sex may be the amount of maternally derived heterochromatic proteins.
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Registered trials
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