Pollen embryogenesis

Pollen embryogenesis Plant Molecular Biology 33: 1–10, 1997. 1 c 1997 Kluwer Academic Publishers. Printed in Belgium. Mini-review Thomas L. Reynolds Department of Biology, The University of North Carolina at Charlotte, 9201 University City Boulevard, Charlotte, NC 28223, USA Received 20 August 1996; accepted in revised form 16 September 1996 Key words: androgenesis, anther and microspore culture, gene expression, haploids, pollen embryogenesis Introduction Microgametogenesis In general, plants display a remarkable potential for To better understand the anomalous pathway of pol- cellular totipotency. In fact, it may be that any differ- len development, it is useful to briefly review normal entiated plant cell that retains its nucleus has the ability pollen ontogeny. The process of microgametogenesis to revert to the embryogenic condition and regenerate occurs in two distinct phases. First, within the anther an entire new plant. Evolutionarily this ability to repro- locule, a diploid microsporocyte undergoes meiosis duce from somatic cells has been an important survival to produce a tetrad of microspores which are held adaptation to predation since plants are stationary and together by a callose wall. As the microspores devel- do not always have well developed defense mechan- op, the callose wall dissociates releasing four indi- isms. One of http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Plant Molecular Biology Springer Journals

Pollen embryogenesis

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Kluwer Academic Publishers
Copyright © 1997 by Kluwer Academic Publishers
Life Sciences; Biochemistry, general; Plant Sciences; Plant Pathology
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