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

JeanMalo Couzigou | Zendy; Vladimir A. Zhukov | Zendy; Samuel Mondy | Zendy; Ghada Abu el Heba | Zendy; Viviane Cosson | Zendy; Noel Ellis | Zendy; Mike Ambrose | Zendy; Jiangqi Wen | Zendy; Million Tadege | Zendy; И. А. Тихонович | Zendy; Kirankumar S. Mysore | Zendy; Joanna Putterill | Zendy; Julie Hofer | Zendy; Alexei Y. Borisov | Zendy; Pascal Ratet | Zendy

Open Access

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

Author(s) -

JeanMalo Couzigou,

Vladimir A. Zhukov,

Samuel Mondy,

Ghada Abu el Heba,

Viviane Cosson,

Noel Ellis,

Mike Ambrose,

Jiangqi Wen,

Million Tadege,

И. А. Тихонович,

Kirankumar S. Mysore,

Joanna Putterill,

Julie Hofer,

Alexei Y. Borisov,

Pascal Ratet

Publication year - 2012

Publication title -

the plant cell

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 5.324

H-Index - 341

eISSN - 1532-298X

pISSN - 1040-4651

DOI - 10.1105/tpc.112.103747

Subject(s) - biology , medicago truncatula , lotus japonicus , root nodule , rhizobia , botany , symbiosis , petiole (insect anatomy) , pisum , mutant , legume , nodule (geology) , arabidopsis , arabidopsis thaliana , gene , genetics , bacteria , paleontology , hymenoptera

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.

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