Stress and respiration traits differ among four geographically distinct Pinus ponderosa seed sources

Comparison of respiratory and growth characteristics of two co-occurring shrubs from a cold desert, Coleogyne ramosissima (blackbrush) and Atriplex confertifolia (shadscale)

“…Previous studies we have done on crop plants grown in different seasons and locations (Taylor et al, 1998;Criddle and Hansen, 1999;Matheson, 2000) and on wild plants adapted to different locations (Criddle et al, 1994;Hemming et al, 1999;Criddle and Hansen, 1999;Anekonda et al, 2004;Keller et al, 2004) show regular changes in respiratory properties with latitude and altitude. Many of the studies on wild plants were done on plants grown in common gardens, thus showing the differences in respiratory properties are genetic adaptations, not acclimation.…”

Climate change effects on vegetation in the Pacific Northwest: a review and synthesis of the scientific literature and simulation model projections

“…Common garden studies with seedlings have found local differentiation in species traits like phenology, height, and cold hardiness for ponderosa pine (Pinus ponderosa Lawson & C. Lawson), (Keller et al 2004), Douglas-fi r (Monserud andRehfeldt 1990, Rehfeldt 1989), lodgepole pine (Pinus contorta) (Rehfeldt 1988), Engelmann spruce (Picea engelmannii Parry ex Engelm. ), (Rehfeldt 1994a), western redcedar (Thuja plicata Donn ex D. Don), (Rehfeldt 1994b), western larch (Larix occidentalis Nutt.)…”

Thermal Analysis

“…However, heat consumption has not occurred during lactate oxidation, which suggests that rapid glycolytic ATP and lactate production, and lactate oxidation, are both independently associated with heat production and thus represent separate and additive components of total energy expenditure for exercise and recovery. Keller et al (200) have measured the respiratory heat and CO 2 rates for 2-year-old seedlings of ponderosa pine grown in a common garden near Corvallis, OR, from seeds originating from four geographically distinct regions (Oregon, Willamette and Deschutes; and California, Mendocino and Eldorado). The results suggest that plant respiration and photosynthesis are genetically adapted to the native climate and that plant metabolism has little ability to acclimate to a non-native climate.…”