Powdery Mildew update June 2015

In 2014 leaves from cereals, grasses and other species infected with Powdery mildew were collected. From these leaf samples 1.237 cultures of fungal isolates have been obtained. 748 of these isolates fulfilled the pre-screening criteria. These criteria were: no growth at 36°C (safety for humans), germination and growth at 5°C (cold tolerance), germination and growth at -7 MPa (drought tolerance) and growth after exposure to UVb (UVb tolerance). More than 60% of these isolates belonged to the genus Cladosporium. In the next step 27 extra isolates were excluded, because they belonged to species considered as not safe for humans, animals or plants.

Testing efficacy
The BIOCOMES partners developed in the beginning of 2015 a procedure for the further choice of pre-selected isolates. The testing of isolates for efficacy against powdery mildew on wheat plants in the greenhouse will start in the summer of 2015. The isolates will also be tested on the amount of spores they produce. High spore production is needed for the production of high amounts of biocontrol product.

Read more about our activities on powdery mildew


Jürgen Köhl
Jürgen Köhl
Powdery mildew in cereals