Plant tolerance of heat stress involves various changes at physiological and molecular levels. The objective of this study was to examine the expression of a gene encoding expansin protein in relation to heat tolerance in two C(3) grass species and genotypes differing in heat tolerance. Heat-tolerant, thermal Agrostis scabra, adapted to high temperatures in geothermal areas in Yellowstone Natio...

Dead greens in spring due to winterkill is common on Nordic golf courses. The objective of this research was evaluate drop seeding, spike seeding and slit creeping bentgrass (Agrostis stolonifera L.‘007’) rough bluegrass (Poa trivialis L.) comparison with an unseeded control treatment for reestablishment annual annua putting after winterkill. Three trials were conducted courses Central Sweden (...

Dead spot is a new disease of young creeping bentgrass (Agrostis stolonifera L.) putting greens in the United States. The disease is incited by Ophiosphaerella agrostis Dernoeden, M.P.S. Câmara, N.R. O’Neill, van Berkum, et M.E. Palm, a previously undescribed pathogen that first was isolated in 1998 from a golf course in Maryland (1,3). In the same year, the disease was confirmed on creeping be...

Repeated measures using multispectral radiometry resolutely quantify canopy attributes of identical turfgrass cultivars under similar management. Concern regarding radiometric characterization canopies <24 h following synthetic phthalocyanine colorant application has been affirmed and is accordingly now avoided; yet explicit guidance on subsequent employ, at time(s) > 24-h postapplication, lack...

BACKGROUND Within the root endosphere, fungi are known to be important for plant nutrition and resistance to stresses. However, description and understanding of the rules governing community assembly in the fungal fraction of the plant microbiome remains scarce. METHODS We used an innovative DNA- and RNA-based analysis of co-extracted nucleic acids to reveal the complexity of the fungal commu...

The importance of understanding the role of atmospheric conditions in pollen dispersal has grown in recent years with increased field-testing of genetically modified (GM) crop plants. An atmospheric model was used to characterize wind trajectories at 10 m and 100 m above GM pollen source fields located within a 4452-ha "control" area north of Madras, Oregon, USA, designated by the Oregon Depart...