http://www.cnr.it/ontology/cnr/individuo/prodotto/ID40879

Dual requirement of the ljsym4 gene for mycorrhizal development in epidermal and cortical cells of Lotus japonicus roots (Articolo in rivista)

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Dual requirement of the ljsym4 gene for mycorrhizal development in epidermal and cortical cells of Lotus japonicus roots (Articolo in rivista) (literal)

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Novero M., Faccio A., Genre A., Stougaard J., Webb K. J., Mulder L., Parniske M., Bonfante P. (2002)
Dual requirement of the ljsym4 gene for mycorrhizal development in epidermal and cortical cells of Lotus japonicus roots
in New phytologist (Print)
(literal)

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Novero M., Faccio A., Genre A., Stougaard J., Webb K. J., Mulder L., Parniske M., Bonfante P. (literal)

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-Faccio A., Istituto per la Protezione delle Piante, CNR, Viale Mattioli 25, I-10125 Torino, ITALY -Novero M., Genre A., Bonfante P., Dipartimento di Biologia Vegetale, Università degli Studi di Torino, Viale Mattioli 25, I-10125 Torino, ITALY -Stougaard J., Laboratory of Gene Expression, Department of Molecular and Structural Biology, University of Aarhus, Gustav Wieds Vej 10, 8000 Aarhus C, DANEMARK -Webb K. J., Institute of Grassland and Environmental Research, Aberystwyth, Ceredigion SY23 3EB, UK -Mulder L., Parniske M., The Sainsbury Laboratory, John Innes Centre, Colney Lane, Norwich NR4 7UH, UK (literal)

Titolo

Dual requirement of the ljsym4 gene for mycorrhizal development in epidermal and cortical cells of Lotus japonicus roots (literal)

Abstract

* The LjSym4 mutation leads to Lotus japonicus plants that are defective in arbuscular mycorrhiza (AM) development. * Two alleles of LjSym4 with different phenotypic strength were compared. AM development was assessed by considering five parameters related to fungal structures present in root segments from wild type and mutant plants. The distribution of intercellular hyphae was determined using semithin sections from resin-embedded roots. Cellular interactions were investigated at ultrastructural level, while cell wall components from the host plant were identified by using immunogold labelling. * In roots of Ljsym4-1 fungal hyphae are mostly restricted to the intercellular spaces of the cortex, indicating a block of infection of mutant cortical cells, resulting in a very low number of arbuscules. * This observation suggests the presence of an additional genetically defined checkpoint for mycorrhizal development, located at the wall of cortical cells. The LjSym4 gene is therefore required for infection of both epidermal and cortical cells by AM fungi. (literal)

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