Abstract:
BACKGROUND:The effective functional analysis of male gametophyte development requires new tools enabling the spatially and temporally controlled expression of both marker genes and modified genes of interest. In particular, promoters driving expression at earlier developmental stages including microspores are required. RESULTS:Transcriptomic datasets covering four progressive stages of male gametophyte development in Arabidopsis were used to select candidate genes showing early expression profiles that were male gametophyte-specific. Promoter-GUS reporter analysis of candidate genes identified three promoters (MSP1, MSP2, and MSP3) that are active in microspores and are otherwise specific to the male gametophyte and tapetum. The MSP1 and MSP2 promoters were used to successfully complement and restore the male transmission of the gametophytic two-in-one (tio) mutant that is cytokinesis-defective at first microspore division. CONCLUSION:We demonstrate the effective application of MSP promoters as tools that can be used to elucidate gametophytic gene functions in microspores in a male-specific manner.
journal_name
BMC Plant Bioljournal_title
BMC plant biologyauthors
Honys D,Oh SA,Renák D,Donders M,Solcová B,Johnson JA,Boudová R,Twell Ddoi
10.1186/1471-2229-6-31subject
Has Abstractpub_date
2006-12-21 00:00:00pages
31issn
1471-2229pii
1471-2229-6-31journal_volume
6pub_type
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