1,720,962 research outputs found
Timing is Everything: Long-duration drought preconditioning induces drought-hardy traits in western larch (Larix occidentalis) seedlings
No full textFirst-year western larch (Larix occidentalis Nutt.) seedlings were drought-preconditioned under three watering levels for six months and subjected to 21-days of aeroponic growth to assess new root and foliage development. Drought preconditioning severity related positively with new root biomass, negatively with new foliar biomass, and positively with the length and number of new roots (P < 0.001). The mass of lateral root production following drought preconditioning, but prior to aeroponic growth, correlated weakly to the mass, count, and length of new roots produced during aeroponic growth. Drought preconditioning thus appears to have promoted changes in seedling physiology that led to greater root production. Findings presented here and those from recent related research suggest that the timing and duration of drought preconditioning treatments represents an important research frontier with the capacity to facilitate climate-ready food systems and forests
Timing is Everything: Long-duration drought preconditioning induces drought-hardy traits in western larch (Larix occidentalis) seedlings
No full textFirst-year western larch (Larix occidentalis Nutt.) seedlings were drought-preconditioned under three watering levels for six months and subjected to 21-days of aeroponic growth to assess new root and foliage development. Drought preconditioning severity related positively with new root biomass, negatively with new foliar biomass, and positively with the length and number of new roots (P < 0.001). The mass of lateral root production following drought preconditioning, but prior to aeroponic growth, correlated weakly to the mass, count, and length of new roots produced during aeroponic growth. Drought preconditioning thus appears to have promoted changes in seedling physiology that led to greater root production. Findings presented here and those from recent related research suggest that the timing and duration of drought preconditioning treatments represents an important research frontier with the capacity to facilitate climate-ready food systems and forests
Moler et al. 2021 Plant-Environment Interactions
No full textStudies of plant responses under static thermal systems during only one developmental stage, e.g. warmed versus ambient conditions at reproductive maturity, may provide an overly simplistic view into how plant acclimation processes operate under climate change. We studied acclimation of southwestern white pine (Pinus strobiformis) to elevated temperatures by asking whether the seedling morphology and physiology respond differently to controlled warming imposed in tree canopies during embryogenesis versus in growth chambers during early seedling growth. Warming during both stages reduced plant survival, but effects of an interaction between warming during embryogenesis and early growth suggest that heat during seed development may improve survival under subsequent growth under warm conditions. Measures of water relations and oxidative stress (experimentally validated against an herbicide that imposes oxidative stress) suggest that elevated temperatures during early seedling growth reduced the efficacy of water use regulation but improved plant oxidative stress resistance. This work promotes a more integrated view of plant acclimation processes and highlights novel considerations of how forest regeneration may be impacted by climate change
Moler et al. 2021 Plant-Environment Interactions
No full textStudies of plant responses under static thermal systems during only one developmental stage, e.g. warmed versus ambient conditions at reproductive maturity, may provide an overly simplistic view into how plant acclimation processes operate under climate change. We studied acclimation of southwestern white pine (Pinus strobiformis) to elevated temperatures by asking whether the seedling morphology and physiology respond differently to controlled warming imposed in tree canopies during embryogenesis versus in growth chambers during early seedling growth. Warming during both stages reduced plant survival, but effects of an interaction between warming during embryogenesis and early growth suggest that heat during seed development may improve survival under subsequent growth under warm conditions. Measures of water relations and oxidative stress (experimentally validated against an herbicide that imposes oxidative stress) suggest that elevated temperatures during early seedling growth reduced the efficacy of water use regulation but improved plant oxidative stress resistance. This work promotes a more integrated view of plant acclimation processes and highlights novel considerations of how forest regeneration may be impacted by climate change
Timing is Everything: Long-duration drought preconditioning induces drought-hardy traits in western larch (Larix occidentalis) seedlings
No full textFirst-year western larch (Larix occidentalis Nutt.) seedlings were drought-preconditioned under three watering levels for six months and subjected to 21-days of aeroponic growth to assess new root and foliage development. Drought preconditioning severity related positively with new root biomass, negatively with new foliar biomass, and positively with the length and number of new roots (P < 0.001). The mass of lateral root production following drought preconditioning, but prior to aeroponic growth, correlated weakly to the mass, count, and length of new roots produced during aeroponic growth. Drought preconditioning thus appears to have promoted changes in seedling physiology that led to greater root production. Findings presented here and those from recent related research suggest that the timing and duration of drought preconditioning treatments represents an important research frontier with the capacity to facilitate climate-ready food systems and forests
Moler et al. 2021 Plant-Environment Interactions
No full textStudies of plant responses under static thermal systems during only one developmental stage, e.g. warmed versus ambient conditions at reproductive maturity, may provide an overly simplistic view into how plant acclimation processes operate under climate change. We studied acclimation of southwestern white pine (Pinus strobiformis) to elevated temperatures by asking whether the seedling morphology and physiology respond differently to controlled warming imposed in tree canopies during embryogenesis versus in growth chambers during early seedling growth. Warming during both stages reduced plant survival, but effects of an interaction between warming during embryogenesis and early growth suggest that heat during seed development may improve survival under subsequent growth under warm conditions. Measures of water relations and oxidative stress (experimentally validated against an herbicide that imposes oxidative stress) suggest that elevated temperatures during early seedling growth reduced the efficacy of water use regulation but improved plant oxidative stress resistance. This work promotes a more integrated view of plant acclimation processes and highlights novel considerations of how forest regeneration may be impacted by climate change
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