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PLANT GROWTH RESPONSES TO VESICULAR‐ARBUSCULAR MYCORRHIZA
Author(s) -
BÅÅTH E.,
HAYMAN D. S.
Publication year - 1983
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.1469-8137.1983.tb03509.x
Subject(s) - verticillium , biology , inoculation , verticillium wilt , mycorrhiza , arbuscular mycorrhiza , agronomy , plant growth , symbiosis , glomus , wilt disease , phosphorus , greenhouse , horticulture , bacteria , chemistry , genetics , organic chemistry
SUMMARY The effect of pre‐inoculation with vesicular‐arbuseular mycorrhiza (VAM) on Verticillium wilt of tomato was assessed in a glasshouse trial. Inoculation with Verticillium albo‐atrum decreased plant growth compared to non‐inoculated controls, irrespective of the mycorrhizal status of the plant. Mycorrhizal plants were slightly smaller than non‐mycorrhizal ones. Addition of extra phosphorus to the soil enhanced plant growth but this enhancement was totally eliminated by Verticillium. It is not expected, therefore, that VAM could affect the severity of disease caused by Verticillium even under conditions where VAM would normally have been beneficial for plant growth. The lowest percentage mycorrhizal infection was found on plants with the most severe disease symptoms.