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NODULE ROOT and COCHLEATA Maintain Nodule Development and Are Legume Orthologs of Arabidopsis BLADE-ON-PETIOLE Genes

Publication Type:Journal Article
Year of Publication:2012
Authors:Couzigou, J-M, Zhukov, V, Mondy, S, Heba, GAbu el, Cosson, V, Ellis, THNoel, Ambrose, M, Wen, J, Tadege, M, Tikhonovich, I, Mysore, KS, Putterill, J, Hofer, J, Borisov, AY, Ratet, P
Journal:The Plant Cell
Volume:24
Issue:11
Date Published:2012
ISBN Number:10404651
Keywords:Medicago
Abstract:

During their symbiotic interaction with rhizobia, legume plants develop symbiosis-specific organs on their roots, called nodules, that house nitrogen-fixing bacteria. The molecular mechanisms governing the identity and maintenance of these organs are unknown. Using Medicago truncatula nodule root (noot) mutants and pea (Pisum sativum) cochleata (coch) mutants, which are characterized by the abnormal development of roots from the nodule, we identified the NOOT and COCH genes as being necessary for the robust maintenance of nodule identity throughout the nodule developmental program. NOOT and COCH are Arabidopsis thaliana BLADE-ON-PETIOLE orthologs, and we have shown that their functions in leaf and flower development are conserved in M. truncatula and pea. The identification of these two genes defines a clade in the BTB/POZ-ankyrin domain proteins that shares conserved functions in eudicot organ development and suggests that NOOT and COCH were recruited to repress root identity in the legume symbiotic organ.

URL:http://www.jstor.org/stable/23327525
Short Title:The Plant Cell
Taxonomic name: 
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Scratchpads developed and conceived by (alphabetical): Ed Baker, Katherine Bouton Alice Heaton Dimitris Koureas, Laurence Livermore, Dave Roberts, Simon Rycroft, Ben Scott, Vince Smith