Karrikins are active components of smoke that can promote seed germination and regulate seedling morphogenesis. However, the role karrikins as alleviators abiotic stress remains largely elusive. In this study, we examined whether exogenous application karrikin1 (KAR1) might improve drought tolerance in creeping bentgrass (Agrostis stolonifera cv. PennA4), investigated underlying mechanism. We f...

Bentgrass species are widely utilized on golf course fairways in cool climatic regions. Among the 200 species of bentgrass that exist, creeping (A. stolonifera), colonial (A. capillaris), and velvet (A. canina) bentgrasses have received the greatest breeding improvements and are the most widely utilized Agrostis species for turf. Each bentgrass species retains particular qualities relating to d...

Respiration is a major avenue of carbohydrates loss. The objective of the present study was to examine root respiratory characteristics associated with root tolerance to high soil temperature for two Agrostis species: thermal Agrostis scabra, a species adapted to high-temperature soils in geothermal areas in Yellowstone National Park, and two cultivars ('L-93' and 'Penncross') of a cool-season ...

Stem tissues of red-osier dogwood (Cornus stolonifera Michx.) acclimated from -3 C to -40 or -50 C in 8 to 10 weeks under a short photoperiod (9 hours) and controlled temperature conditions. During the summer months plants did not acclimate as well as at other times. The sequence of day/night temperature regimes which induced maximum acclimation was 20/15 C for 5 to 6 weeks; 15/5 C for 2 to 3 w...