A5053126023- Plant Water Relations and Carbon Dynamics
- Photosynthetic Processes and Mechanisms
- Plant responses to elevated CO2
- Physiological and biochemical adaptations
- Plant Stress Responses and Tolerance
- Ecology and Vegetation Dynamics Studies
- Plant and animal studies
- Geology and Paleoclimatology Research
- Tree Root and Stability Studies
- thermodynamics and calorimetric analyses
- Spectroscopy and Chemometric Analyses
- Botanical Research and Applications
- Seedling growth and survival studies
- Marine and coastal plant biology
- Genetic diversity and population structure
- Marine Biology and Ecology Research
- Species Distribution and Climate Change
- Leaf Properties and Growth Measurement
Australian National University
2011-2024
University of Concepción
2008-2010
Plant thermal tolerance is a crucial research area as the climate warms and extreme weather events become more frequent. Leaves exposed to temperature extremes have inhibited photosynthesis will accumulate damage PSII if thresholds are exceeded. Temperature-dependent changes in basal chlorophyll fluorescence (T-F0) can be used identify critical at which inhibited. We developed tested high-throughput method for measuring temperatures low (CTMIN) high (CTMAX) using Maxi-Imaging fluorimeter...
Nothofagus nitida (Phil.) Krasser, an emergent tree of the Chilean evergreen forest, regenerates under canopy. Nonetheless, it is common to find older saplings in clear areas. We hypothesized that this transition from shade sun during early developmental stages made possible by ontogenetic increase light acclimation capacity photosynthesis. To test our hypothesis, we studied photosynthetic performance and photoprotection N. at different corresponding with three height classes (short: 16.2...
Given the rising frequency of thermal extremes (heatwaves and cold snaps) due to climate change, comprehending how a plant's origin affects its tolerance breadth (TTB) becomes vital. We studied juvenile plants from three biomes: temperate coastal rainforest, desert alpine. In controlled settings, underwent hot days nights in factorial design examine acclimation. assessed thresholds (T crit-hot T crit-cold) TTB. hypothesized that (i) species would show highest heat tolerance, alpine greatest...
Nothofagus nitida (Phil.) Krasser (Nothofagaceae) regenerates under the canopy in microsites protected from high light. Nonetheless, it is common to find older saplings clear areas and adults as emergent trees of Chilean evergreen forest. We hypothesized that this shade sun transition N. supported by an increase photochemical non-photochemical energy dissipation capacities both photosystems parallel with plant size light availability. To dissect relative contribution environment...
When leaves exceed their thermal threshold during heatwaves, irreversible damage to the leaf can accumulate. However, few studies have explored short-term acclimation of heatwaves that could help plants prevent heat with increasing heatwave intensity. Here, we studied tolerance PSII (PHT) in response a Acacia species from across strong environmental gradient Australia. We compared PHT metrics derived temperature-dependent chlorophyll fluorescence curves (T–F0) before and 4-day 38°C...
El género Alstroemeria es exclusivamente sudamericano y consta de 82 taxa distribuyéndose, principalmente en Chile Brasil.La gran importancia económica que han adquirido las Alstroemerias chilenas como plantas ornamentales ha despertado interés la variabilidad morfológica flores genética especies con potencial valor económico.Una ellas hookeri posee cuatro subespecies, cuales, subespecie tipo, endémica regiones del Maule Biobío.Su distribución geográfica consiste dos rangos, separados por...
Foundation seaweed species are experiencing widespread declines and localized extinctions due to increased instability of sea surface temperature. Characterizing temperature thresholds useful for predicting patterns change identifying most vulnerable extremes. Existing methods characterizing thermal tolerance produce diverse metrics often time‐consuming, making comparisons between techniques difficult, hindering insight into global change. Using three kelp species, we adapted a...
In alpine ecosystems, elevation broadly functions as a steep thermal gradient, with plant communities exposed to regular fluctuations in hot and cold temperatures. These conditions lead selective filtering, potentially contributing species-level variation tolerance population-level genetic divergence. Few studies have explored the breadth of tolerances across gradient or underlying thereof. We measured photosystem heat (Tcrit-hot) (Tcrit-cold) thresholds ten Australian species gradients...
<title>Abstract</title> 1. Heatwaves are becoming more intense and frequent. Plant photosystem thermal thresholds can vary with species, but also shift in response to environmental triggers. Both upper lower acclimate repeated heatwaves through ecological stress memory, where prior exposure primes them for subsequent events. The extent which acclimation heat events varies among origin and/or species is unknown. Different strategies might reflect biome of origin, or may be species-specific....
1.The Climate Variability Hypothesis (CVH) predicts that species from environments with more variable temperatures should have wide thermal tolerance breadth. We addressed this question in plants and asked which local climate predictors (including precipitation, mean extreme variability) best predict physiological limits. 2. Measures of low (Tcrit-cold) high (Tcrit-hot) photosystem II thresholds were used to determine breadth (TTB), along ice nucleation temperature (Tnucleation, freezing...
Abstract Plant thermal tolerance is a crucial research area as the climate warms and extreme weather events become more frequent. Leaves exposed to temperature extremes have inhibited photosynthesis will accumulate damage photosystem II (PSII) if thresholds are exceeded. Temperature-dependent changes in basal chlorophyll fluorescence ( T-F 0 ) can be used identify critical at which PSII inhibited. We developed tested high-throughput method for measuring temperatures low CT MIN high MAX using...