ISSN:
0192-253X
Keywords:
Caffeine
;
cytokinesis
;
development
;
embryogenesis
;
mutant
;
pattern formation
;
pea
;
Life and Medical Sciences
;
Genetics
Source:
Wiley InterScience Backfile Collection 1832-2000
Topics:
Biology
Notes:
Embryogenesis in higher plants requires the precise regulation of cell division, orientation of cell elongation and specification of cell differentiation. The division plane is determined by the position of a new cell plate at cytokinesis. A mutant of pea has been isolated in which both the embryo pattern and surface morphology is altered. The phenotype of the mutant is manifest primarily in the cotyledons where cell plates only partially form, generating cell wall stubs and multinucleate cells. Some cotyledonary cells of the mutant proceed through nine DNA replication cycles, including nuclear division, but not cytokinesis, producing nuclei with a DNA content of ca. 1000C. The cytological phenotype of the mutant could be mimicked by the treatment of wild-type cells with caffeine. We have termed this mutant cytokinesis-defective (cyd). © 1995 Wiley-Liss, Inc.
Additional Material:
5 Ill.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1002/dvg.1020160405
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