ACgD) was reported to regulate plant defense response in Arabidopsis in a complex pattern (Xu

ACgD) was reported to regulate plant defense response in Arabidopsis in a complex pattern (Xu et al Shen et al).Genes Enriched in All Stigma SamplesThree selfincompatibility related genes, the stigma determinant gene BnSRK (BnaAgD) (Stein et al Takasaki et al Okamoto et al), pollen adhesion related genes SLG (BnaAgD) and two copies of SLR (BnaCgD and BnaAgD) (Luu et al ,) had been identified to be expressed highly in unpollinated stigma, as well as the expression levels of these reported pollenstigma interaction genes showed no obvious differences amongst compatible and incompatible pollinations.Thus, enriched genes in all stigma samples could also take part in pollenstigma interactions.Genes with FPKM values above in UP had been selected, and most very expressed genes had been identified and annotated (Supplemental File S).Gene Ontology (GO) analysis and GOterm enrichment analysis have been performed to elucidate the biological functions in the stigmaenriched genes (Supplemental File S).The GO term “recognition of pollen” (GO) was overrepresented, with BnSRK (BnaAgD), SLG (BnaAgD) and SLR (BnaCgD and BnaAgD) identified (Supplemental File S).The most highly represented GO terms in each category of biological approach, cellular elements and molecular functions are shown in Figure A.Several overrepresented GO terms associated to strain response had been found, including “response toabiotic stimulus” (osmotic anxiety and temperature stimulus), and “response to inorganic substance” (including cadmium and metal ions) (Figure A; Supplemental File S).GO term “cell wall” was identified in the category of cellular components.Plant cell wall can be a extremely dynamic, responsive structure that extends for the plasma membrane and underlying cytoskeleton for the duration of signal transduction (reviewed by Baluska et al).The PubMed ID:http://www.ncbi.nlm.nih.gov/pubmed/21542610 cell wall of stigma is regarded as an obstacle for pollen tube development and in addition, it plays a vital role in relaying details from external stimuli (reviewed by Humphrey et al).Furthermore, the terms “water transport” in molecular function and “water channel activity” in biological course of action have been overrepresented, confirming the role of stigma in offering resources for the hydration and germination of pollen grains in compatible pollination.Chloroplast connected terms “thylakoid,” “chloroplast part,” and “chloroplast envelope” in cellular elements, “chlorophyll binding” and “ribulosebisphosphate SMER28 COA carboxylase activity” in molecular functions have been also found.To characterize metabolic pathways activated in the stigma, stigmaenriched genes were mapped to metabolic pathways working with the GOEnzymeCode Mapping tool with all the computer software BlastGo.A total of metabolic pathways had been identified and ranked in line with the number of mapped enzymes (Supplemental File S).Starch and sucrose metabolism (eight enzymes such as nine genes), biosynthesis of antibiotics (six enzymes, genes) and cysteine and methionine metabolism (five enzymes, seven genes) have been the three most overrepresentedFrontiers in Plant Science www.frontiersin.orgMay Volume ArticleZhang et al.PollenStigma Interactions in Brassica napus L.TABLE UP vs.PI particular DEGs involving the enriched GO term “immune program method.” Brassica napus gene ID BnaAgD BnaAgD BnaAgD BnaAgD BnaAgD BnaAgD BnaAgD BnaAgD BnaAgD BnaAgD BnaAgD BnaAgD BnaCgD BnaCgD BnaCgD BnaCgD BnaCgD BnaCgD BnaCgD BnaCgD BnaCgD Arabidopsis gene ID None ATG ATG ATG ATG ATG ATG none ATG ATG ATG ATG ATG ATG ATG ATG ATG none ATG ATG ATG Gene name Gene descriptionNone N.

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