Modern plant pathology benefits from integrating methods and concepts from evolutionary biology. For example, evolutionary concepts are used to identify and examine species boundaries of plant pathogens, recognize processes underlying pathogen biogeography, identify traits that characterize emerging species, and discover new molecular interactions that originate under processes of selection. In...
Anthropogenic induced climate change is predicted to alter distribution of existing plant populations. As plants migrate over space and time, populations often fragment and contract, affecting basic elements of population dynamics (e.g., population size, gene flow, genetic diversity, etc.). Little is known, however, how these impacts on plant species will...
Many microbial, fungal, or oomcyete populations violate assumptions for population
genetic analysis because these populations are clonal, admixed, partially
clonal, and/or sexual. Furthermore, few tools exist that are specifically designed for
analyzing data from clonal populations, making analysis difficult and haphazard.
We developed the R package poppr providing unique tools...
Phytophthora infestans, the cause of the devastating late blight disease of potato and tomato, exhibits a clonal reproductive lifestyle in North America. Phenotypes such as fungicide sensitivity and host preference are conserved among individuals within clonal lineages, while substantial phenotypic differences can exist between lineages. Whole P. infestans genomes were...
In the Amazon the only described species
of Cordyceps sensu stricto (Hypocreales, Cordycipitaceae)
that parasitize insects of Orthopterida (orders
Orthoptera and Phasmida) are Cordyceps locustiphila
and C. uleana. However, the type specimens for both
taxa have been lost and the concepts of these species
are uncertain. To achieve a more...
Full Text:
,
A.A. 1226, Medellin, Colombia
JavierTabima
Silvia Restrepo
Laboratorio de Micologia y Fitopatologia
The neotropical biogeographic zone is a ‘hot spot’ of global biodiversity, especially for insects. Fungal pathogens of insects appear to track this diversity. However, the integration of this unique component of fungal diversity into molecular phylogenetic analyses remains sparse. The entomopathogenic fungal genus Ophiocordyceps is species rich in this region...
In the Amazon the only described species
of Cordyceps sensu stricto (Hypocreales, Cordycipitaceae)
that parasitize insects of Orthopterida (orders
Orthoptera and Phasmida) are Cordyceps locustiphila
and C. uleana. However, the type specimens for both
taxa have been lost and the concepts of these species
are uncertain. To achieve a more...
In the Amazon the only described species
of Cordyceps sensu stricto (Hypocreales, Cordycipitaceae)
that parasitize insects of Orthopterida (orders
Orthoptera and Phasmida) are Cordyceps locustiphila
and C. uleana. However, the type specimens for both
taxa have been lost and the concepts of these species
are uncertain. To achieve a more...
Root rot of raspberry (Rubus idaeus), thought to be primarily caused
by Phytophthora rubi, is an economically important disease in the
western United States. The objectives of this study were to determine
which Phytophthora species are involved in root rot, examine the efficacy
of different isolation methods (cane, root, and...
Phytophthora infestans is a destructive plant pathogen best known
for causing the disease that triggered the Irish potato famine and
remains the most costly potato pathogen to manage worldwide.
Identification of P. infestan’s elusive center of origin is critical to
understanding the mechanisms of repeated global emergence of
this pathogen....