| gene gain and loss during evolution of obligate parasitism in the white rust pathogen of arabidopsis thaliana. | biotrophic eukaryotic plant pathogens require a living host for their growth and form an intimate haustorial interface with parasitized cells. evolution to biotrophy occurred independently in fungal rusts and powdery mildews, and in oomycete white rusts and downy mildews. biotroph evolution and molecular mechanisms of biotrophy are poorly understood. it has been proposed, but not shown, that obligate biotrophy results from (i) reduced selection for maintenance of biosynthetic pathways and (ii) g ... | 2011 | 21750662 |
| a new species of albugo parasitic to arabidopsis thaliana reveals new evolutionary patterns in white blister rusts (albuginaceae). | the obligate biotrophic lineages of the white blister rusts (albuginales, oomycota) are of ancient origin compared to the rather recently evolved downy mildews, and sophisticated mechanisms of biotrophy and a high degree of adaptation diversity are to be expected in these organisms. speciation in the biotrophic oomycetes is usually thought to be the consequence of host adaptation or geographic isolation. here we report the presence of two distinct species of albugo on the model plant arabidopsis ... | 2009 | 20198144 |