Phytophthora Species Associated with Roots of Native and Non-native Trees in Natural and Managed Forests
Environmental Microbiology - Published: 02 August 2020
Tanay Bose, Michael J. Wingfield, Jolanda Roux, Maria Vivas & Treena I. Burgess
Microbial Ecology (2020)
act as a biological filter that exclusively allows only a portion of
the soil-associated microbial diversity to infect the plant. This
microbial diversity includes organisms both beneficial and detrimental
to plants. Phytophthora species are among the most important
groups of detrimental microbes that cause various soil-borne plant
diseases. We used a metabarcoding approach with Phytophthora-specific primers to compare the diversity and richness of Phytophthora species
associated with roots of native and non-native trees, using different
types of soil inocula collected from native and managed forests.
Specifically, we analysed (1) roots of two non-native tree species (Eucalyptus grandis and Acacia mearnsii)
and native trees, (2) roots of two non-native tree species from an in
vivo plant baiting trial, (3) roots collected from the field versus
those from the baiting trial, and (4) roots and soil samples collected
from the field. The origin of the soil and the interaction between root
and soil significantly influenced Phytophthora species richness.
Moreover, species richness and community composition were significantly
different between the field root samples and field soil samples with a
higher number of Phytophthora species in the soil than in the roots. The results also revealed a substantial and previously undetected diversity of Phytophthora species from South Africa.
Read the full article here:
Original Source: Springer Link