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Biology 2017, 6(3), 35;

The Role of Oocyte Organelles in Determining Developmental Competence

Department of Anatomy, University of Otago, PO Box 56, Dunedin 9054, New Zealand
Animal Reproduction, AgResearch Invermay Agricultural Centre, Private Bag 50034, Mosgiel 9053, New Zealand
Author to whom correspondence should be addressed.
Academic Editor: Jukka Finne
Received: 14 September 2017 / Revised: 14 September 2017 / Accepted: 14 September 2017 / Published: 18 September 2017
(This article belongs to the Special Issue Reproductive Biology)
Full-Text   |   PDF [2173 KB, uploaded 19 September 2017]   |  


The ability of an oocyte to undergo successful cytoplasmic and nuclear maturation, fertilization and embryo development is referred to as the oocyte’s quality or developmental competence. Quality is dependent on the accumulation of organelles, metabolites and maternal RNAs during the growth and maturation of the oocyte. Various models of good and poor oocyte quality have been used to understand the essential contributors to developmental success. This review covers the current knowledge of how oocyte organelle quantity, distribution and morphology differ between good and poor quality oocytes. The models of oocyte quality are also described and their usefulness for studying the intrinsic quality of an oocyte discussed. Understanding the key critical features of cytoplasmic organelles and metabolites driving oocyte quality will lead to methods for identifying high quality oocytes and improving oocyte competence, both in vitro and in vivo. View Full-Text
Keywords: oocyte; oocyte quality; organelles; cytoplasm; oocyte maturation oocyte; oocyte quality; organelles; cytoplasm; oocyte maturation

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Reader, K.L.; Stanton, J.-A.L.; Juengel, J.L. The Role of Oocyte Organelles in Determining Developmental Competence. Biology 2017, 6, 35.

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