Question

In a study on the mycorrhizal community found in the rhizosphere(the area around root system) of Abies pindrow (a conifer), the following information was found.

1. Glomus aureus was found to form an association with the plant irrespective of the presence of other species.
2. Glomus virdis formed an association with the plant only in the presence of another species of Glomus.
3. Glomus lobatus formed an association with Abies only when no other species of Glomus was present.
4. Diaspora spectabil is formed an association with the plant in the presence of Glomus virids only.

What would be the minimal composition of the mycorrhizal community if D. spectabilis is detected? Indicate your answers by putting + or - against each species.

Answer 1

Species	+/-
G. aureus	+
G. virdis	+
D.spectabilis	+
G. lobatus	-