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| Standard Gene Set Name | QIN_SIV-PT/4HPT_DN |
| Species | Arabidopsis thaliana |
| Brief Description | Down-regulated in SIV PT v 4hPT (Table S14 PubmedID:19714218) |
| Full Description/Abstract | For successful reproduction in flowering plants, a single-celled pollen tube must rapidly extend through female pistil tissue, locate female gametes, and deliver sperm. Pollen tubes undergo a dramatic transformation while growing in the pistil; they grow faster compared to tubes grown in vitro and become competent to perceive and respond to navigation cues secreted by the pistil. The genes expressed by pollen tubes in response to growth in the pistil have not been characterized. We used a surgical procedure to obtain large quantities of uncontaminated pollen tubes that grew through the pistil and defined their transcriptome by microarray analysis. Importantly, we identify a set of genes that are specifically expressed in pollen tubes in response to their growth in the pistil and are not expressed during other stages of pollen or plant development. We analyzed mutants in 33 pollen tube¨Cexpressed genes using a sensitive series of pollen function assays and demonstrate that seven of these genes are critical for pollen tube growth; two specifically disrupt growth in the pistil. By identifying pollen tube genes induced by the pistil and describing a mutant analysis scheme to understand their function, we lay the founDation for functional genomic analysis of pollen¨Cpistil interactions |
| External Pathway ID/Pubmed ID | 19714218 |
| Source | Literature |
| Contributor/Author | Liming Lai and Xijin Ge |
| Organization of contributer | South Dakota State University |
| External URL | http://www.plosgenetics.org/article/info%3Adoi%2F10.1371%2Fjournal.pgen.1000621;jsessionid=0156DCBD58797B8B319CFC6B60C695FA |