ISSN:
1432-2145
Keywords:
Key words Maize pollen
;
Male sterility
;
Microsporogenesis
;
Gametophytic gene expression
Source:
Springer Online Journal Archives 1860-2000
Topics:
Biology
Notes:
Abstract Several pollen-specific genes from different species have been isolated and characterized at the molecular level, but the precise role of most of them is unknown. Mutant analysis represents a direct approach to uncovering gene function, but the paucity of available mutants affecting pollen development and/or function and the poor characterization of the known mutants have so far limited the exploitation of this approach. Here we present the cytological characterization of gametophytic male sterile-1 (gaMS-1), a maize mutant that we identified in a program of transposon insertion mutagenesis for the production of mutations in gametophytically acting genes involved in microsporogenesis. gaMS-1 is expressed during or immediately after the first microspore division and leads to the production of immature, non-functional pollen grains. The mutation appears to affect the events leading to the developmental switch that follows the first microspore mitosis.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1007/s004970050034
