Details zur Publikation

Referenztyp Zeitschriften
DOI / URL Link
Titel (primär) The mycorrhiza helper bacteria revisited
Autor Frey-Klett, P.; Garbaye, J.; Tarkka, M.;
Journal / Serie New Phytologist
Erscheinungsjahr 2007
Department BOOEK;
Band/Volume 176
Heft 1
Sprache englisch;
Keywords fungal-bacterial interaction; mycorrhizal symbiosis
Abstract In natural conditions, mycorrhizal fungi are surrounded by complex microbial communities, which modulate the mycorrhizal symbiosis. Here, the focus is on the so-called 'mycorrhiza helper bacteria' (MHB). This concept is revisited, and the distinction is made between the helper bacteria, which assist mycorrhiza formation, and those that interact positively with the functioning of the symbiosis. After considering some examples of MHB from the literature, the ecological and evolutionary implications of the relationships of MHB with mycorrhizal fungi are discussed. The question of the specificity of the MHB effect is addressed, and an assessment is made of progress in understanding the mechanisms of the MHB effect, which has been made possible through the development of genomics. Finally, clear evidence is presented suggesting that some MHB promote the functioning of the mycorrhizal symbiosis. This is illustrated for three critical functions of practical significance: nutrient mobilization from soil minerals, fixation of atmospheric nitrogen, and protection of plants against root pathogens. The review concludes with discussion of future research priorities regarding the potentially very fruitful concept of MHB.
ID 1768
dauerhafte UFZ-Verlinkung
Frey-Klett, P., Garbaye, J., Tarkka, M. (2007):
The mycorrhiza helper bacteria revisited
New Phytol. 176 (1), 22 - 36