Journal Article

Expression of <i>LjENOD40</i> Genes in Response to Symbiotic and Non-symbiotic Signals: <i>LjENOD40–1</i> and <i>LjENOD40–2</i> are Differentially Regulated in <i>Lotus japonicus</i>

Naoya Takeda, Satoru Okamoto, Makoto Hayashi and Yoshikatsu Murooka

in Plant and Cell Physiology

Published on behalf of Japanese Society of Plant Physiologists

Volume 46, issue 8, pages 1291-1298
Published in print August 2005 | ISSN: 0032-0781
Published online August 2005 | e-ISSN: 1471-9053 | DOI: http://dx.doi.org/10.1093/pcp/pci138
Expression of LjENOD40 Genes in Response to Symbiotic and Non-symbiotic Signals: LjENOD40–1 and LjENOD40–2 are Differentially Regulated in Lotus japonicus

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Nitrogen fixation in nodules provides leguminous plants with an ability to grow in nitrogen-starved soil. Infection of the host plants by microsymbionts triggers various physiological and morphological changes during nodule formation. In Lotus japonicus, expression of early nodulin (ENOD) genes is triggered by perception of bacterial signal molecules, nodulation factors (Nod factors). We examined the expression patterns of ENOD40 genes during the nodule formation process. Two ENOD40 genes of L. japonicus were specifically expressed in the nodule formation process, but they showed different expression patterns upon infection. Each ENOD40 gene demonstrates an individual specificity and regulation with regard to rhizobial infection.

Keywords: ENOD40; Lotus japonicus; Mesorhizobium loti; Nod factors; Nodulation; ENOD gene, early nodulin gene; GFP, green fluorescent protein; Nod factor, nodulation factor; nod gene, nodulation gene; RT–PCR, reverse transcription–PCR

Journal Article.  5768 words.  Illustrated.

Subjects: Biochemistry ; Molecular and Cell Biology ; Plant Sciences and Forestry

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