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Early processes involved in host recognition by arbuscular mycorrhizal fungi
Author(s) -
GIOVANNETTI MANUELA,
SBRANA CRISTIANA,
LOGI CABLE
Publication year - 1994
Publication title -
new phytologist
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 3.742
H-Index - 244
eISSN - 1469-8137
pISSN - 0028-646X
DOI - 10.1111/j.1469-8137.1994.tb02973.x
Subject(s) - biology , hypha , glomus , symbiosis , botany , arbuscular mycorrhizal fungi , arbuscular mycorrhizal , mycorrhiza , host (biology) , morphogenesis , glomeromycota , ecology , spore , bacteria , inoculation , genetics , gene , biochemistry , immunology
SUMMARY Plant species that are hosts of non‐arbuscular mycorrhizas were utilized to investigate the early processes involved in host recognition by arbuscular mycorrhizal fungi. The roots of plant hosts of ecto‐, arbutoid and ericoid mycorrhizas, as well as those of non‐mycorrhizal species, did not elicit the differential morphogenesis that occurred in the hyphae of Glomus mosseae (Nicol. & Gerd.) Gerd. & Trappe when challenged with the roots of its hosts. In the absence of this morphogenetic response, infection structures were not formed, any further step in the recognition process was hindered, and defence reactions did not occur. The ability of arbuscular mycorrhizal fungi to discriminate their specific hosts from alt other plant species through a recognition process is probably determined by chemical signals.