Detail Legumes Symbioses: Absence of Nod Genes in Photosynthetic Bradyrhizobia   Oleh:  Giraud, Eric ; Moulin, Lionel ; Vallenet, David ; Barbe, Valerie ; Cytryn, Eddie ; et al. Jenis: Article from Bulletin/Magazine Dalam koleksi: SCIENCE (keterangan: ada di Proquest) vol. 316 no. 5829 (Jun. 2007), page 1307. Topik: Microbiology Ketersediaan Perpustakaan FK Nomor Panggil: S01.K.2007.06 Non-tandon: 1 (dapat dipinjam: 0) Tandon: tidak ada     Lihat Detail Induk Isi artikel Leguminous plants (such as peas and soybeans) and rhizobial soil bacteria are symbiotic partners that communicate through molecular signaling pathways, resulting in the formation of nodules on legume roots and occasionally stems that house nitrogen-fixing bacteria. Nodule formation has been assumed to be exclusively initiated by the binding of bacterial, host-specific lipochito-oligosaccharidic Nod factors, encoded by the nod ABC genes, to kinase-like receptors of the plant. Here we show by complete genome sequencing of two symbiotic, photosynthetic, Bradyrhizobium strains, BTAil and ORS278, that canonical nod ABC genes and typical lipochitooligosaccharidic Nod factors are not required for symbiosis in some legumes. Mutational analyses indicated that these unique rhizobia use an alternative pathway to initiate symbioses, where a purine derivative may playa key role in triggering nodule formation. Opini Anda Klik untuk menuliskan opini Anda tentang koleksi ini! Kembali

Copyright © 2006, 2007 Unika Atma Jaya, all rights reserved