Hyperspectral Leaf Reflectance Detects Interactive Genetic and Environmental Effects on Tree Phenotypes, Enabling Large‐Scale Monitoring and Restoration Planning Under Climate Change DOI Creative Commons
Jaclyn P. M. Corbin, Rebecca J. Best, Iris J. Garthwaite

et al.

Plant Cell & Environment, Journal Year: 2024, Volume and Issue: unknown

Published: Nov. 4, 2024

Plants respond to rapid environmental change in ways that depend on both their genetic identity and phenotypic plasticity, impacting survival as well associated ecosystems. However, effects phenotype are difficult quantify across large spatial scales through time. Leaf hyperspectral reflectance offers a potentially robust approach map these from local landscape levels. Using handheld field spectrometer, we analyzed leaf-level of the foundation tree species Populus fremontii wild populations three 6-year-old experimental common gardens spanning steep climatic gradient. First, show variation among clonal genotypes is detectable with leaf spectra, using multivariate univariate approaches. Spectra predicted population 100% accuracy trees wild, 87%-98% within garden, 86% different environments. Multiple spectral indices plant health had significant heritability, genotype accounting for 10%-23% 14%-48% all populations. Second, found gene by environment interactions leading population-specific shifts garden Spectral indicate genetically divergent made unique adjustments chlorophyll water content response same stresses, so detecting critical predicting change. Third, indicators greenness photosynthetic efficiency decreased when were transferred growing environments higher mean annual maximum temperatures relative home conditions. This result suggests altered physiological strategies further conditions which plants locally adapted. Transfers cooler fewer negative effects, demonstrating spectra directionality performance adjustments. Thus, data can detect adaptation plastic physiology, informing strategic restoration conservation decisions enabling high resolution tracking changes climate

Language: Английский

Limits of thermal and hydrological tolerance in a foundation tree species (Populus fremontii) in the desert southwestern United States DOI Creative Commons
Madeline E. Moran, L. M. T. Aparecido, Dan F. Koepke

et al.

New Phytologist, Journal Year: 2023, Volume and Issue: 240(6), P. 2298 - 2311

Published: Sept. 7, 2023

Summary Populus fremontii is among the most dominant, and ecologically important riparian tree species in western United States can thrive hyper‐arid corridors. Yet, P. forests have rapidly declined over last decade, particularly places where temperatures sometimes exceed 50°C. We evaluated high temperature tolerance of leaf metabolism, thermoregulation, hydraulic function eight populations spanning a 5.3°C mean annual gradient well‐watered common garden, at source locations throughout lower Colorado River Basin. Two major results emerged. First, despite having an exceptionally T crit (the which Photosystem II disrupted) relative to other taxa, recent heat waves exceeded , requiring evaporative cooling maintain leaf‐to‐air thermal safety margins. Second, midsummer, genotypes from warmest maintained midday temperatures, higher stomatal conductance, turgor pressure water potentials than more temperate locations. Taken together, suggest that under conditions, regulate below along warm edge its distribution. Nevertheless, reduced flows threaten tables levels needed for during episodic waves.

Language: Английский

Citations

13
Intensive leaf cooling promotes tree survival during a record heatwave DOI Creative Commons
Bradley C. Posch, S. E. Bush, Dan F. Koepke

et al.

Proceedings of the National Academy of Sciences, Journal Year: 2024, Volume and Issue: 121(43)

Published: Oct. 14, 2024

Increasing heatwaves are threatening forest ecosystems globally. Leaf thermal regulation and tolerance important for plant survival during heatwaves, though the interaction between these processes water availability is unclear. Genotypes of widely distributed foundation tree species Populus fremontii were studied in a controlled common garden record summer heatwave—where air temperature exceeded 48 °C. When was not limiting, all genotypes cooled leaves 2 to 5 °C below temperatures. Homeothermic cooling disrupted weeks following 72-h reduction soil water, resulting leaf temperatures rising 3 above 1.3 thresholds physiological damage, despite stress having little effect on potentials. Tradeoffs safety hydraulic emerged but, regardless use strategy, experienced significant mortality stress. from warmer climates showed greater less after comparison with cooler climates. These results illustrate how brief limitation disrupts potentially compromises extreme thus providing insight into future scenarios which will be challenged heat unreliable access.

Language: Английский

Citations

4
Genetic underpinnings of arthropod community distributions in Populus trichocarpa DOI
Sandra Simon, Anna Furches, Hari Chhetri

et al.

New Phytologist, Journal Year: 2024, Volume and Issue: 242(3), P. 1307 - 1323

Published: March 15, 2024

Community genetics seeks to understand the mechanisms by which natural genetic variation in heritable host phenotypes can encompass assemblages of organisms such as bacteria, fungi, and many animals including arthropods. Prior studies that focused on plant genotypes have been unable identify genes controlling community composition, a necessary step predict ecosystem structure function underlying shift within populations. We surveyed arthropods an association population Populus trichocarpa three common gardens discover contributed arthropod composition. analyzed our surveys with traditional single-trait genome-wide analysis (GWAS), multitrait GWAS, functional networks built from diverse set phenotypes. Plant genotype was influential structuring composition among several garden sites. Candidate important for higher level organization communities had broadly applicable functions, terpenoid biosynthesis production dsRNA binding proteins protein kinases, may be capable targeting multiple species. demonstrated ability detect, uncontrolled environment, individual are associated assemblage plant, further enhancing understanding impact structure.

Language: Английский

Citations

1
Bacterial and fungal root endophytes alter survival, growth, and resistance to grazing in a foundation plant species DOI
Kylea R. Garces, Torrance C. Hanley, Ron J. Deckert

et al.

Oecologia, Journal Year: 2024, Volume and Issue: 207(1)

Published: Dec. 10, 2024

Language: Английский

Citations

1
A mammalian herbivore selects local and cooler provenance trees in a restoration common garden experiment: implications for community‐assisted migration efforts DOI Open Access

Kayla K. Lauger,

Sean M. Mahoney, Elizabeth M. Rothwell

et al.

Restoration Ecology, Journal Year: 2024, Volume and Issue: unknown

Published: Oct. 22, 2024

Rapid changes in climate have the potential to alter habitats faster than evolution may respond, leading maladapted tree populations. Assisted migration help foundation species persist future climates by identifying populations and genotypes that are robust expected change‐induced alterations. Importantly, community‐assisted accounts for impacts of those on broader community, including herbivores, often adapted local plants. These been examined arthropod communities, but few studies assessed mammals, fewer still leveraged an experimental design disentangle genetic contributions herbivore selection among We tested whether North American porcupine ( Erethizon dorsatum ) browsing Fremont cottonwood Populus fremontii is under control a common garden uncouple environmental browse selection. Porcupines selected trees from climatically similar cooler areas, where suffered greater 2× more herbivory warmer areas. Plant genotype was significant factor selection, with most heavily browsed having 10× least browsed. Broad‐sense heritability H 2 B = 0.27 genotypes, indicating component defenses against can be predicted source population climate. Our results important implications mammalian populations, should change render maladaptive. recommend assisted efforts plant stock areas up 3°C maintain productivity browsing.

Language: Английский

Citations

0
Disentangling the effect of heritability and plasticity onPopulus fremontiileaf reflectance across a temperature gradient DOI Creative Commons
Megan Seeley, Eleanor R. Thomson, Gerard J. Allan

et al.

bioRxiv (Cold Spring Harbor Laboratory), Journal Year: 2024, Volume and Issue: unknown

Published: Oct. 24, 2024

Summary We quantified the relative effect of plasticity and heritability on Populus fremontii (Fremont cottonwood) leaf reflectance using clonal replicates propagated from 16 populations grown across three common gardens spanning a mean annual temperature gradient 10.7–22.3°C. used variance partitioning to decompose phenotypic variation expressed in spectra into genotypic versus environmental components estimate broad-sense found that was most strongly red-edge (∼680-750nm) SWIR (∼1400-3000nm). Support vector machine models predicted P. source population garden location at 78% 93% accuracy, respectively, demonstrating can be differentiated same spectra. However, model accuracy declined by ∼49% when any two predict third site. Prediction accuracies were lowest for hottest site, which linked stress responses visible wavelengths (400-750nm). conclude display different parts spectrum. When mapping regions/seasons with extreme climates, spectral heat decrease but may offer opportunities understand phenological temperatures large scales.

Language: Английский

Citations

0
Hyperspectral Leaf Reflectance Detects Interactive Genetic and Environmental Effects on Tree Phenotypes, Enabling Large‐Scale Monitoring and Restoration Planning Under Climate Change DOI Creative Commons
Jaclyn P. M. Corbin, Rebecca J. Best, Iris J. Garthwaite

et al.

Plant Cell & Environment, Journal Year: 2024, Volume and Issue: unknown

Published: Nov. 4, 2024

Plants respond to rapid environmental change in ways that depend on both their genetic identity and phenotypic plasticity, impacting survival as well associated ecosystems. However, effects phenotype are difficult quantify across large spatial scales through time. Leaf hyperspectral reflectance offers a potentially robust approach map these from local landscape levels. Using handheld field spectrometer, we analyzed leaf-level of the foundation tree species Populus fremontii wild populations three 6-year-old experimental common gardens spanning steep climatic gradient. First, show variation among clonal genotypes is detectable with leaf spectra, using multivariate univariate approaches. Spectra predicted population 100% accuracy trees wild, 87%-98% within garden, 86% different environments. Multiple spectral indices plant health had significant heritability, genotype accounting for 10%-23% 14%-48% all populations. Second, found gene by environment interactions leading population-specific shifts garden Spectral indicate genetically divergent made unique adjustments chlorophyll water content response same stresses, so detecting critical predicting change. Third, indicators greenness photosynthetic efficiency decreased when were transferred growing environments higher mean annual maximum temperatures relative home conditions. This result suggests altered physiological strategies further conditions which plants locally adapted. Transfers cooler fewer negative effects, demonstrating spectra directionality performance adjustments. Thus, data can detect adaptation plastic physiology, informing strategic restoration conservation decisions enabling high resolution tracking changes climate

Language: Английский

Citations

0