Mycorrhizas: Gene to Function

Springer Science and Business Media LLC - Tập 274 - Trang 79-100 - 2005
James H. Graham1, R. Michael Miller2
1IFAS, Citrus Research and Education Center, Soil and Water Science Department, University of Florida, Lake Alfred, USA
2Environmental Research Division, Argonne National Laboratory, Argonne, (USA)

Tóm tắt

Substantial progress has been made toward development of molecular tools for identification and quantification of mycorrhizal fungi in roots and evaluation of the diversity of ectomycorrhizal (ECM) fungi and the phylogeny and genetic structure of arbuscular mycorrhizal (AM) fungi. rDNA analysis confirms high diversity of ECM fungi on their hosts, and for AM fungi has revealed considerable genetic variation within and among morphologically similar AM fungal species. The fungal and plant genes, regulation of their expression, and biochemical pathways for nutrient exchange between symbiotic partners are now coming under intense study and will eventually be used to define the ecological nutritional role of the fungi. While molecular biological approaches have increased understanding of the mycorrhizal symbiosis, such knowledge about these lower-scale processes has yet to influence our understanding of larger-scale responses to any great extent.

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