PLANT MORPHOLOGY
Online ISSN : 1884-4154
Print ISSN : 0918-9726
ISSN-L : 0918-9726
Differentiation of organelles during male gametophyte development in higher plants
Noriko Nagata
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2003 Volume 15 Issue 1 Pages 68-75

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Abstract
Summary: This review describes phenomena that are common and unique to organell differentiation during male gametophyte development: (1)selective decreases/increases in plastid and mitochondrial DNA in generative cells just after pollen mitosis one. (PMI), which determine the mode of cytoplasmic inheritance; (2)the unique distribution of mitochondria, which surround the nuclear envelope in a single compact layer, just before and after PMI in Pharbitis nil; (3)the role of CSL1, a novel nuclear protein, in controlling vacuole contraction before and after PMI; and(4)tapetosome differentiation in tapetal cells depending on the sterol content under the control ofHMG1, a key enzyme in the cytosolic isoprenoid biosynthesis pathway in higher plants.
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© The Japanese Society of Plant Morphology
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