Mycorrhiza does not help the host plant in
1. enhancing its phosphorus uptake capacity
2. increasing its tolerance to drought
3. enhancing its resistance to root pathogens
4. increasing its resistance to insects
(VAM) e.g, Glomus.
The fungal hyphae symbiont in these associations absorb phosphorus from soil and
passes it to the plant. Plants having such associations show other benefits also, such
as resistance to roat-borne pathogens, tolerance to salinity and draught, and an overall
increase in plant growth and development, Mycorthiza does not help the host plant in
increasing its resistance to insects.