Defence, Symbiosis and ABCG Transporters

摘要: Plant genomes encode more than 100 ATP-binding cassette (ABC) transporters, a number far exceeding those of other organisms. The membrane-bound ABC transporters belonging to the G subfamily (ABCGs) can be categorised by their distinctive topology and taxa distribution. ABCGs form largest known proteins, with 43 50 members in Arabidopsis rice, respectively. Collected experimental data have revealed great functional diversity these proteins. substrates transferred ABCGs, usually through plasma membrane, include surface lipids, plant hormones secondary metabolites. Therefore, are recognised as being important for development well interactions environment. Historically, certain ABCG were considered proteins that evolved involved pathogenic processes or biotic stress responses. However, recent discoveries demonstrated function plants extends beyond simply secretion anti-microbial molecules. Equally defence against invaders microorganisms beneficial both partners. Such (1) symbiotic associations fungi phylum Glomeromycota, also arbuscular mycorrhizae (AM) (2) legume–rhizobia symbiosis (LRS). We only just begun discover modulators symbioses, but how they participate is unclear. Here, we provide basic information regarding position them context reactions plants, special emphasis on legumes.