Organ growth without cell division: somatic polyploidy in a moth, Ephestia kuehniella

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F60077344%3A_____%2F12%3A00384781" target="_blank" >RIV/60077344:_____/12:00384781 - isvavai.cz</a>

Result on the web

<a href="http://dx.doi.org/10.1139/g2012-060" target="_blank" >http://dx.doi.org/10.1139/g2012-060</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1139/g2012-060" target="_blank" >10.1139/g2012-060</a>

Result language

angličtina

Original language name

Organ growth without cell division: somatic polyploidy in a moth, Ephestia kuehniella

Original language description

Organ growth depends on cell division and cell growth. Here, we present a study on two organs whose growth depends entirely on cell growth, Malpighian tubules and silk glands of Ephestia kuehniella. We determined the number of endocyles required to reachthese stages by Feulgen cytometry. Cells of Malpighian tubules were in the 2C stage in first instar larvae and reached 1024C after 9 endocycles in last instar larvae (1C = 0.45 pg DNA). Silk gland cells already reached a DNA content of 8C-16C in first instar larvae and attained up to 8192C in last instar larvae after a total of 12 endocycles. The nuclei were small and spherical in first instar larvae, but they were huge, flat, and bizarrely branched in last instar larvae. We consider branching as a compensatory adaptation to improve molecular traffic between nucleus and cytoplasm in highly polyploid cells (i) by reducing the mean distance between nucleus and cytoplasm and (ii) by enlarging the surface-to-volume ratio of these nuclei.

Czech name

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Czech description

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Type

J_x - Unclassified - Peer-reviewed scientific article (Jimp, Jsc and Jost)

CEP classification

EB - Genetics and molecular biology

OECD FORD branch

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Project

<a href="/en/project/IAA600960925" target="_blank" >IAA600960925: Evolutionary history of sex chromosomes in Lepidoptera</a><br>

Continuities

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)<br>I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Publication year

2012

Confidentiality

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Name of the periodical

Genome

ISSN

0831-2796

e-ISSN

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Volume of the periodical

55

Issue of the periodical within the volume

11

Country of publishing house

CA - CANADA

Number of pages

9

Pages from-to

755-763

UT code for WoS article

000311897800002

EID of the result in the Scopus database

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