Knufia perforans is a fungi from hot arid environments, and Exophiala jeanselmei is a black yeast endolith closely related to human pathogens.
2.
The " avrBs2 " effector gene from " Xanthomona perforans " is the causal agent of bacterial spot disease of pepper and tomato.
3.
In another experiment, by Kristina Zakharova et al, two species of microcolonial fungi Cryomyces antarcticus and Knufia perforans-and a species of black yeasts Exophiala jeanselmei were found to adapt and recover metabolic activity during exposure to a simulated Mars environment for 7 days . They depended on the temporary saturation of the atmosphere with water vapour like the lichens.
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