Deregulation of a Ca2+/ calmodulin-dependent kinase leads to spontaneous nodule development

Article Abstract:

The complex root-nodule organogenic programme can be genetically deregulated to trigger nodule formation in the absence of rhizobia or exogenous rhizobial signals. It is revealed that a key regulatory position of CCaMK upstream of all components required for cellcycle activation, and a phenotypically divergent series of mutant alleles demonstrates positive and negative regulation of the process.

Japan, Physiological aspects, Host-bacteria relationships, Cell cycle, Chromosome mapping, Plant tissue culture, Lotus (Legumes)

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Plant recognition of symbiotic bacteria requires two LysM receptor-like kinases

Article Abstract:

Most higher plants, establish a symbiosis with arbuscular mycorrhizal fungi and symbiotic nitrogen fixation with rhizobia which is a salient feature of legumes. Two LysM type serine/theronine receptor kinase genes, NFR1 and NFR5 which enables the model legume Lotus japonicus to recognize its bacterial microsymbiont Mesorhizobium loti are described.

Nitrogen fixation, Nitration

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A receptor kinase gene of the LysM type is involved in legume perception of

Article Abstract:

The important determinant of bacterial host specificity, is the structure of the Nodfactor, which suggests that a plant receptor is involved in signal perception and signal transduction, and also initiates the plant development response. The description of the cloning of a putative Nod-factor receptor kinase gene from Lotus haponicus is presented.

Rhizobium

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