Tree drought physiology: critical research questions and strategies for mitigating climate change effects on forests DOI Open Access
Andrew Groover, N. Michèle Holbrook, Andrea Polle

et al.

New Phytologist, Journal Year: 2024, Volume and Issue: unknown

Published: Dec. 17, 2024

Droughts of increasing severity and frequency are a primary cause forest mortality associated with climate change. Yet, fundamental knowledge gaps regarding the complex physiology trees limit development more effective management strategies to mitigate drought effects on forests. Here, we highlight some basic research needed better understand tree how new technologies interdisciplinary approaches can be used address them. Our discussion focuses change wood water stress, hormonal responses drought, genetic variation underlying adaptive phenotypes, 'remember' prior stress exposure, symbiotic soil microbes affect response. Next, identify opportunities for using findings enhance or develop managing forests, ranging from matching genotypes environments, enhancing seedling resilience through nursery treatments, landscape-scale monitoring predictions. We conclude need co-producing land managers extending forests in critical ecological regions beyond temperate zone.

Language: Английский

Spectral ecophysiology: hyperspectral pressure–volume curves to estimate leaf turgor loss DOI
Raiza Castillo-Argáez, Gerard Sapes,

Nicole Mallen

et al.

New Phytologist, Journal Year: 2024, Volume and Issue: 242(3), P. 935 - 946

Published: March 14, 2024

Summary Turgor loss point (TLP) is an important proxy for plant drought tolerance, species habitat suitability, and drought‐induced mortality risk. Thus, TLP serves as a critical tool evaluating climate change impacts on plants, making it imperative to develop high‐throughput in situ methods measure TLP. We developed hyperspectral pressure–volume curves (PV curves) estimate using leaf spectral reflectance. used partial least square regression models water potential (Ψ) relative content (RWC) two species, Frangula caroliniana Magnolia grandiflora . RWC Ψ's model each had R 2 ≥ 0.7 %RMSE = 7–10. constructed PV with estimates compared the accuracy of directly measured spectra‐predicted Our findings indicate that measurements are alternative method estimating F. TLP's values were −1.62 ± 0.15 (means SD) 0.34 MPa observed reflectance predicted, respectively ( P > 0.05), while M. −1.78 −1.66 0.41 0.05). The estimation through reflectance‐based opens broad range possibilities future research aimed at understanding monitoring relations large scale ecophysiology.

Language: Английский

Citations

4
Hyperspectral signals in the soil: Plant–soil hydraulic connection and disequilibrium as mechanisms of drought tolerance and rapid recovery DOI
Yangyang Song, Gerard Sapes, Spencer J. Chang

et al.

Plant Cell & Environment, Journal Year: 2024, Volume and Issue: 47(11), P. 4171 - 4187

Published: June 26, 2024

Predicting soil water status remotely is appealing due to its low cost and large-scale application. During drought, plants can disconnect from the soil, causing disequilibrium between plant potentials at pre-dawn. The impact of this on drought response recovery not well understood, potentially complicating predictions spectral reflectance. This study aimed quantify drought-induced disequilibrium, evaluate responses recovery, determine potential for predicting Two species were tested: sweet corn (Zea mays), which disconnected during intense peanut (Arachis hypogaea), did not. Sweet corn's hydraulic disconnection led an extended 'hydrated' phase, but was slower than peanut's, remained connected even lower (-5 MPa). Leaf hyperspectral reflectance successfully predicted consistently, only until occurred in corn. Our results reveal different strategies coping with extreme provide first example using rhizosphere status, emphasizing need species-specific considerations canopy

Language: Английский

Citations

4
On mature reflection: Ozone damage can be detected in oak trees by hyperspectral reflectance DOI Creative Commons
Anna Lee Jones, Christian Pfrang, Felicity Hayes

et al.

Ecological Indicators, Journal Year: 2025, Volume and Issue: 172, P. 113263 - 113263

Published: Feb. 22, 2025

Language: Английский

Citations

0
Enhancing domain adaptation for plant diseases detection through Masked Image Consistency in Multi-Granularity Alignment DOI
Guinan Guo, Songning Lai, Qingyang Wu

et al.

Expert Systems with Applications, Journal Year: 2025, Volume and Issue: unknown, P. 127101 - 127101

Published: March 1, 2025

Language: Английский

Citations

0
Comparison of different methods to evaluate tissue damage in response to leaf dehydration in Quercus ilex L. and Q. faginea Lam DOI Creative Commons
Miquel Nadal, José Javier Peguero‐Pina, Domingo Sancho‐Knapik

et al.

Physiologia Plantarum, Journal Year: 2025, Volume and Issue: 177(2)

Published: March 1, 2025

Abstract Determination of the point critical damage in plant organs is crucial to elucidate causes mortality, but different methodologies quantify such have not been previously compared under same experimental conditions. Here, we tested indicators evaluate leaves Quercus faginea and Q . ilex ; latter case, 1‐ 2‐year‐old were included. The relative electrolyte leakage (REL), rehydration capacity (evaluated as percentage loss capacity; PLRC), chlorophyll fluorescence (maximum quantum yield PSII; F v / m ), viability marker triphenyltetrazolium chloride (TTC). These evaluated sets detached for each species leaf age dehydrated on lab bench. Electrolyte PLRC showed a gradual response decreasing water content, whereas TTC threshold‐like response, especially case Q. did show differences between and/or ages. Measurement dehydrating proved be most straightforward, rapid precise method quantification, allowing differentiation dehydration tolerance

Language: Английский

Citations

0
Predicting key water stress indicators of Eucalyptus viminalis and Callitris rhomboidea using high‐resolution visible to short‐wave infrared spectroscopy DOI Creative Commons
R. Haynes, Arko Lucieer, Timothy J. Brodribb

et al.

Plant Cell & Environment, Journal Year: 2024, Volume and Issue: 47(12), P. 4992 - 5006

Published: Aug. 9, 2024

Abstract Drought is one of the main factors contributing to tree mortality worldwide and drought events are set become more frequent intense in face a changing climate. Quantifying water stress forests crucial predicting understanding their vulnerability drought‐induced mortality. Here, we explore use high‐resolution spectroscopy indicators two native Australian species, Callitris rhomboidea Eucalyptus viminalis . Specific spectral features indices derived from leaf‐level were assessed as potential proxies predict leaf (Ψ ), equivalent thickness (EWT) fuel moisture content (FMC) dedicated laboratory experiment. New identified that enabled very high confidence linear prediction Ψ for both species ( R 2 > 0.85) with predictive capacity increasing when accounting breakpoint relationships using segmented regression E. , 0.89; C. 0.87). EWT FMC also linearly predicted accuracy 0.90; 0.80). This study highlights tool measures plant noninvasively, enabling broader applications monitoring managing stress.

Language: Английский

Citations

2
The Ecosystem as Super-organ/Ism, Revisited: Scaling Hydraulics to Forests under Climate Change DOI
Jeffrey D. Wood, Matteo Detto, Marvin Browne

et al.

Integrative and Comparative Biology, Journal Year: 2024, Volume and Issue: 64(2), P. 424 - 440

Published: June 17, 2024

Classic debates in community ecology focused on the complexities of considering an ecosystem as a super-organ or organism. New consideration such perspectives could clarify mechanisms underlying dynamics forest carbon dioxide (CO2) uptake and water vapor loss, important for predicting managing future Earth's ecosystems climate system. Here, we provide rubric traits aggregated, systemic, emergent, i.e., representing aggregate its individuals metaphorical literal We review recent approaches to scaling-up plant relations (hydraulics) concepts developed organs organisms enable interpret measurements at ecosystem-level. focus three community-scale versions that have potential mechanistic insight into change responses CO2 H2O gas exchange productivity: leaf (Ψcanopy), pressure volume curves (eco-PV), hydraulic conductance (Keco). These analyses can reveal additional ecosystem-scale parameters analogous those typically quantified leaves plants (e.g., wilting point vulnerability) may act thresholds drought, including growth cessation, mortality, flammability. unite these novel framework predict Ψcanopy approaching critical during using Keco eco-PV curves. thus delineate how extension from organ- organism-scales constraints interaction vegetation new understanding prediction use productivity.

Language: Английский

Citations

0
Study on the Evolution Mechanism of Spectral Features of Initial Damage in Apples DOI
Tao Xu,

Zichao Wei,

Xufeng Xu

et al.

Food and Bioprocess Technology, Journal Year: 2024, Volume and Issue: unknown

Published: July 31, 2024

Language: Английский

Citations

0
Tree drought physiology: critical research questions and strategies for mitigating climate change effects on forests DOI Open Access
Andrew Groover, N. Michèle Holbrook, Andrea Polle

et al.

New Phytologist, Journal Year: 2024, Volume and Issue: unknown

Published: Dec. 17, 2024

Droughts of increasing severity and frequency are a primary cause forest mortality associated with climate change. Yet, fundamental knowledge gaps regarding the complex physiology trees limit development more effective management strategies to mitigate drought effects on forests. Here, we highlight some basic research needed better understand tree how new technologies interdisciplinary approaches can be used address them. Our discussion focuses change wood water stress, hormonal responses drought, genetic variation underlying adaptive phenotypes, 'remember' prior stress exposure, symbiotic soil microbes affect response. Next, identify opportunities for using findings enhance or develop managing forests, ranging from matching genotypes environments, enhancing seedling resilience through nursery treatments, landscape-scale monitoring predictions. We conclude need co-producing land managers extending forests in critical ecological regions beyond temperate zone.

Language: Английский

Citations

0