Staff Publications

Staff Publications

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    'Staff publications' is the digital repository of Wageningen University & Research

    'Staff publications' contains references to publications authored by Wageningen University staff from 1976 onward.

    Publications authored by the staff of the Research Institutes are available from 1995 onwards.

    Full text documents are added when available. The database is updated daily and currently holds about 240,000 items, of which 72,000 in open access.

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Record number 411973
Title IPD3 Controls the Formation of Nitrogen-Fixing Symbiosomes in Pea and Medicago Spp.
Author(s) Ovchinnikova, E.; Journet, E.P.; Chabaud, M.; Cosson, V.; Ratet, P.; Duc, G.; Fedorova, E.; Liu, W.; Camp, R. Op den; Zhukov, V.; Tikhonovich, I.A.; Borisov, A.Y.; Bisseling, T.; Limpens, E.H.M.
Source Molecular Plant-Microbe Interactions 24 (2011)11. - ISSN 0894-0282 - p. 1333 - 1344.
Department(s) Laboratory of Molecular Biology
Publication type Refereed Article in a scientific journal
Publication year 2011
Keyword(s) dependent protein-kinase - symbiotic nodule development - erf transcription factor - root-nodules - genes sym33 - intracellular accommodation - n-2-fixing symbiosomes - peribacteroid membrane - truncatula roots - infection
Abstract A successful nitrogen-fixing symbiosis requires the accommodation of rhizobial bacteria as new organelle-like structures, called symbiosomes, inside the cells of their legume hosts. Two legume mutants that are most strongly impaired in their ability to form symbiosomes are sym1/TE7 in Medicago truncatula and sym33 in Pisum sativum. We have cloned both MtSYM1 and PsSYM33 and show that both encode the recently identified interacting protein of DMI3 (IPD3), an ortholog of Lotus japonicus (Lotus) CYCLOPS. IPD3 and CYCLOPS were shown to interact with DMI3/CCaMK, which encodes a calcium- and calmodulin-dependent kinase that is an essential component of the common symbiotic signaling pathway for both rhizobial and mycorrhizal symbioses. Our data reveal a novel, key role for IPD3 in symbiosome formation and development. We show that MtIPD3 participates in but is not essential for infection thread formation and that MtIPD3 also affects DMI3-induced spontaneous nodule formation upstream of cytokinin signaling. Further, MtIPD3 appears to be required for the expression of a nodule-specific remorin, which controls proper infection thread growth and is essential for symbiosome formation.
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