Molecular genetics of the arbuscular mycorrhizal symbiosis

During arbuscular mycorrhiza (AM) development, fungal hyphae grow throughout root epidermal, exodermal and cortical cell layers to reach the inner cortex where the symbiosis’ functional units, the arbuscles, develop. Three essential components of a plant signalling network, a receptor-like kinase, a...

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Bibliographic Details
Published in:Current opinion in plant biology 2004-08, Vol.7 (4), p.414-421
Main Author: Parniske, Martin
Format: Article
Language:English
Subjects:
calmodulin-dependent protein kinase
gene induction
genes
Genes, Plant
ion channels
literature reviews
microbial genetics
Models, Biological
molecular genetics
Mycorrhizae - genetics
Mycorrhizae - growth & development
Mycorrhizae - metabolism
mycorrhizal fungi
Plant Epidermis - metabolism
plant genetics
plants
receptor-like kinase
roots
Signal Transduction
Symbiosis
vesicular arbuscular mycorrhizae
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Summary:During arbuscular mycorrhiza (AM) development, fungal hyphae grow throughout root epidermal, exodermal and cortical cell layers to reach the inner cortex where the symbiosis’ functional units, the arbuscles, develop. Three essential components of a plant signalling network, a receptor-like kinase, a predicted ion-channel and a calmodulin-dependent protein kinase have been identified. A detailed morphological study of symbiotic plant mutants revealed that different subsets of plant genes support the progress of fungal infection in successive root cell layers. Moreover, evidence of a diffusible fungal signalling factor that triggers gene activation in the root has recently been obtained.
ISSN:1369-5266
1879-0356
DOI:10.1016/j.pbi.2004.05.011