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Oogenesis in Fundulus heteroclitus IV. Yolk‐vesicle formation

Oogenesis in Fundulus heteroclitus IV. Yolk‐vesicle formation Yolk vesicles first appear within the oocyte of Fundulus heteroclitus in association with elaborate smooth endoplasmic reticulum and Golgi elements. Cytochemistry indicates the yolk vesicles contain an acidic glycoconjugate. [3H]Glucose is used to examine the synthesis and accumulation of yolk vesicles in studies performed both in vivo and in vitro, since it is selectively incorporated into nascent yolk vesicles. The endogenous synthesis of yolk‐vesicle glycoconjugate is documented by autoradiography, gel electrophoresis, and fluorography. A large (> 200 kDa) glycoconjugate has been identified, which is thought to reside in yolk vesicles. Incorporation studies done in vitro substantiate that this putative yolk‐vesicle material is synthesized by the oocyte itself and that synthesis occurs not only during the so‐called yolk‐vesicle stage, but also throughout vitellogenesis and early maturation. The view is thus adopted that various synthetic and physiological events are sequentially initiated and subsequently remain active throughout oocyte growth. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png The Journal of Experimental Zoology Part A: Ecological and Integrative Physiology Wiley

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References (44)

Publisher
Wiley
Copyright
Copyright © 1986 Wiley Subscription Services, Inc., A Wiley Company
ISSN
2471-5638
eISSN
2471-5646
DOI
10.1002/jez.1402390215
Publisher site
See Article on Publisher Site

Abstract

Yolk vesicles first appear within the oocyte of Fundulus heteroclitus in association with elaborate smooth endoplasmic reticulum and Golgi elements. Cytochemistry indicates the yolk vesicles contain an acidic glycoconjugate. [3H]Glucose is used to examine the synthesis and accumulation of yolk vesicles in studies performed both in vivo and in vitro, since it is selectively incorporated into nascent yolk vesicles. The endogenous synthesis of yolk‐vesicle glycoconjugate is documented by autoradiography, gel electrophoresis, and fluorography. A large (> 200 kDa) glycoconjugate has been identified, which is thought to reside in yolk vesicles. Incorporation studies done in vitro substantiate that this putative yolk‐vesicle material is synthesized by the oocyte itself and that synthesis occurs not only during the so‐called yolk‐vesicle stage, but also throughout vitellogenesis and early maturation. The view is thus adopted that various synthetic and physiological events are sequentially initiated and subsequently remain active throughout oocyte growth.

Journal

The Journal of Experimental Zoology Part A: Ecological and Integrative PhysiologyWiley

Published: Aug 1, 1986

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