Transcriptomics

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Three MYB Transcription Factors Control Pollen Tube Differentiation Required for Sperm Release


ABSTRACT: Flowering plants have immotile sperm that develop within pollen and must be carried to female gametes by a pollen tube. The pollen tube engages in molecular interactions with several cell types within the pistil and these interactions are essential for successful fertilization. We identified a group of three closely related pollen tube-expressed MYB transcription factors (MYB97, MYB101, MYB120), which are required for proper interaction of the pollen tube with the female gametophyte. These transcription factors are transcriptionally induced during growth in the pistil. They regulate a transcriptional network leading to proper differentiation and maturation of the pollen tube, promoting proper pollen tube-ovule interactions resulting in sperm release and double fertilization. We used microarrays to discover genes regulated by the transcription factors MYB97, MYB101 and MYB120 in pollen tubes growing through the pistil at 8 hours after pollination.

ORGANISM(S): Arabidopsis thaliana

PROVIDER: GSE44405 | GEO | 2013/06/18

SECONDARY ACCESSION(S): PRJNA189778

REPOSITORIES: GEO

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