Endophytic fungi (A. coenophialum and A. lolii) which infect grasses produce
ergot alkaloids that serve as the grasses' chemical defenses and enhance the vigor of
the grass. Turf-type tall fescue with high endophyte levels has been deliberately
developed to produce a greener, more vigorous, pest-resistant turf. Consumption of
endophyte-infected grass...
The traditional filter paper assay for saccharifying cellulase
originally described by M. Mandels et al (1976) has been modified to
make possible low activity determinations of Trichoderma
cellulases. The enzymatic activity appears to decline during a
prolonged incubation period if no precautions have been taken. By
means of adding bovine...
Oomycetes form a deep lineage of eukaryotic organisms that includes a large number of plant pathogens which threaten natural and managed ecosystems. We undertook a survey to query the community for their ranking of plant-pathogenic oomycete species based on scientific and economic importance. In total, we received 263 votes from...
Rising atmospheric [CO₂], cₐ, is expected to affect stomatal regulation of leaf gas-exchange of woody plants, thus influencing energy fluxes as well as carbon (C), water, and nutrient cycling of forests. Researchers have proposed various strategies for stomatal regulation of leaf gas-exchange that include maintaining a constant leaf internal [CO₂],...
This dissertation has two objectives. The first objective is to determine where best to situate the study of mentoring (i.e. the 'making of scientists') on the landscape of the history of science and science studies. This task is accomplished by establishing mentoring studies as a link between the robust body...
This study presents a methods evaluation and intercalibration of active fluorescence-based measurements of
the quantum yield (ϕ'ₚₛᵢᵢ) and absorption coefficient (aₚₛᵢᵢ) of photosystem II (PSII) photochemistry. Measurements
of ϕ'ₚₛᵢᵢ, aₚₛᵢᵢ, and irradiance (E) can be scaled to derive photosynthetic electron transport rates (Pₑ), the process
that fuels phytoplankton carbon fixation...