Chromosome number, sex determination, and meiotic chromosome behavior in the praying mantid Hierodula membranacea.
Journal
PloS one
ISSN: 1932-6203
Titre abrégé: PLoS One
Pays: United States
ID NLM: 101285081
Informations de publication
Date de publication:
2022
2022
Historique:
received:
11
08
2021
accepted:
29
07
2022
entrez:
12
8
2022
pubmed:
13
8
2022
medline:
17
8
2022
Statut:
epublish
Résumé
Praying mantids are important models for studying a wide range of chromosome behaviors, yet few species of mantids have been characterized chromosomally. Here we show that the praying mantid Hierodula membranacea has a chromosome number of 2n = 27, and X1X1X2X2 (female): X1X2Y (male) sex determination. In male meiosis I, the X1, X2, and Y chromosomes of H. membranacea form a sex trivalent, with the Y chromosome associating with one spindle pole and the X1 and X2 chromosomes facing the opposite spindle pole. While it is possible that such a sex trivalent could experience different spindle forces on each side of the trivalent, in H. membranacea the sex trivalent aligns at the spindle equator with all of the autosomes, and then the sex chromosomes separate in anaphase I simultaneously with the autosomes. With this observation, H. membranacea can be used as a model system to study the balance of forces acting on a trivalent during meiosis I and analyze the functional importance of chromosome alignment in metaphase as a preparatory step for subsequent correct chromosome segregation.
Identifiants
pubmed: 35960713
doi: 10.1371/journal.pone.0272978
pii: PONE-D-21-26053
pmc: PMC9374246
doi:
Banques de données
Dryad
['10.5061/dryad.9s4mw6mkb']
Types de publication
Journal Article
Research Support, Non-U.S. Gov't
Research Support, U.S. Gov't, Non-P.H.S.
Langues
eng
Sous-ensembles de citation
IM
Pagination
e0272978Déclaration de conflit d'intérêts
The authors have declared that no competing interests exist.
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