Article
Forestry
K. Y. Crous, C. Campany, R. Lopez, Fj Cano, D. S. Ellsworth
Summary: By investigating photosynthetic properties and structural traits of mature Eucalyptus tereticornis canopy leaves, differences in physiological attributes of leaves under different light conditions were found to be related to anatomical variations and CO2 diffusive processes.
Article
Plant Sciences
Yuxin Han, Jiandong Wang, Yanqun Zhang, Shuji Wang
Summary: This study investigated the drought resistance of two maize cultivars released in different years under different environmental factors (CO2 concentration and irrigation). The results showed that higher CO2 concentrations improved water use efficiency (WUE) and drought conditions significantly enhanced WUE. Jingke 968 exhibited higher WUE under higher CO2 concentration and light intensity.
JOURNAL OF PLANT GROWTH REGULATION
(2023)
Article
Plant Sciences
Amanda M. Salvi, Sophia G. Gosetti, Duncan D. Smith, Mark A. Adams, Thomas J. Givnish, Katherine A. McCulloh
Summary: This study investigates the relationship between hydroscape area (HA) and climatic conditions and functional traits across 10 Eucalyptus species in the Hawaiian Islands. The results show that HA decreases with increased P/E-p, and larger HA coincides with species that have higher sensitivity to mesophyll photosynthetic capacity.
PLANT CELL AND ENVIRONMENT
(2022)
Article
Plant Sciences
Gaochao Cai, Andrea Carminati, Sean M. Gleason, Mathieu Javaux, Mutez Ali Ahmed
Summary: The efficiency-safety tradeoff in plant water transport and stomatal regulation has been studied. Recent research revealed that plants with higher maximum stomatal conductance (g(max)) are more sensitive to stomatal closure during soil drying, resulting in less negative leaf water potential at 50% g(max) (psi(gs50)). This tradeoff can be explained by the effects of soil-plant hydraulics on water movement and plant hydraulic properties, such as conductance and embolism resistance.
PLANT CELL AND ENVIRONMENT
(2023)
Article
Ecology
Gilvan Sampaio, Marilia H. Shimizu, Carlos A. Guimaraes-Junior, Felipe Alexandre, Marcelo Guatura, Manoel Cardoso, Tomas F. Domingues, Anja Rammig, Celso von Randow, Luiz F. C. Rezende, David M. Lapola
Summary: The study systematically compares the effects of elevated atmospheric CO2 concentrations and deforestation on Amazon rainfall, finding that both scenarios result in equivalent average annual rainfall reductions above the observed variability. The mechanisms behind the rainfall decreases in the two scenarios are different, highlighting the need for further research on the physiological effects of eCO2 on moisture fluxes in tropical forests.
Article
Plant Sciences
A. L. Chandrajith De Silva, H. A. K. N. Nishadi Senarathna, W. A. Janendra M. De Costa
Summary: This study reveals the diverse responses of sugarcane to elevated CO2 and temperature, with significant genotypic variation playing a crucial role in determining these responses. The combined effects of high CO2 and elevated temperature have a more pronounced impact on sugarcane growth, highlighting the importance of breeding varieties that can withstand future climate conditions.
PHYSIOLOGIA PLANTARUM
(2021)
Article
Plant Sciences
Lena Hunt, Michal Fuksa, Karel Klem, Zuzana Lhotakova, Michal Oravec, Otmar Urban, Jana Albrechtova
Summary: This study investigated the effects of atmospheric CO2 concentration and light intensity on stomatal behavior in barley, finding that stomatal density is influenced by genotype, light, and CO2 conditions. Biochemical parameters related to stomatal behavior were also explored. Variability was observed between the two barley varieties in terms of stomatal density, sugar accumulation, and abscisic acid levels.
Article
Plant Sciences
Yuxuan Miao, Yao Cai, Hao Wu, Dan Wang
Summary: The study found that elevated CO2 significantly increased the net photosynthetic rate of rice, especially during the jointing stage. This stimulation was acclimated with the advance of the growing season and was not affected by stomatal limitations or Rubisco activity.
FRONTIERS IN PLANT SCIENCE
(2021)
Article
Agronomy
Rui Zhu, Tiesong Hu, Fengyan Wu, Yong Liu, Shan Zhou, Yanxuan Wang
Summary: This study investigates the effects of water deficit and flooding stress on rice's intrinsic water-use efficiency (iWUE) and the relationship between iWUE variations and stress-induced physiological changes. The results show that water deficit and flooding stress decrease rice's photosynthetic and water transport capacities, leading to an increase in iWUE. However, improved iWUE cannot prevent yield reduction. Interestingly, the decrease in photosynthetic capacity is significantly correlated with the decline in water transport capacity. This study has important implications for understanding crop physiological responses to environmental stresses.
AGRICULTURAL WATER MANAGEMENT
(2023)
Article
Ecology
Zhaoguo Wang, Chuankuan Wang
Summary: Increasing CO2 concentration can enhance photosynthesis and reduce water loss, benefiting tree growth. Different tree species and ages respond differently to eCO2, while changes in temperature and water availability can impact these responses. This study improves our understanding of tree gas exchange in a changing climate.
GLOBAL ECOLOGY AND BIOGEOGRAPHY
(2021)
Review
Ecology
Xiaoxuan Gu, Peiyang Qiao, Ken W. Krauss, Catherine E. Lovelock, Janine B. Adams, Samantha K. Chapman, Tim C. Jennerjahn, Qiulian Lin, Luzhen Chen
Summary: While there is limited knowledge about the impact of elevated atmospheric CO2 concentrations (eCO2) on mangrove carbon cycling, studies show that eCO2 can enhance carbon storage in mangroves by altering plant productivity, species composition, carbon fluxes, and deposition. This creates a negative feedback to climate change by increasing mangrove's ability to sequester additional carbon and reducing CO2 build-up. Additionally, eCO2 affects warming and sea-level rise in ways that influence mangrove response in both antagonistic (i.e. carbon loss to decomposition) and synergistic (i.e. soil carbon burial) manners. Long-term field observations and in situ simulation experiments are necessary for understanding the mechanisms and predicting future changes in mangrove carbon sequestration.
ECOSYSTEM HEALTH AND SUSTAINABILITY
(2023)
Article
Forestry
Lei Ouyang, Ping Zhao, Xingquan Rao, Liwei Zhu, Guangyan Ni
Summary: This study investigated the tree transpiration, canopy stomatal conductance, and stomatal sensitivity to vapor pressure deficit of four typical plantation tree species in hilly lands of South China. The results showed different water use and stomatal behavior among the species, with broadleaved species generally possessing higher leaf area, specific leaf area, and deeper root depth. The study provides insights into the response of stomatal conductance to changing environment for typical species in subtropical moist forests, which is important for forest management and ecosystem stability under future climate changes.
FOREST ECOLOGY AND MANAGEMENT
(2022)
Article
Plant Sciences
Joannes Guillemot, Veronica Asensio, Bruno Bordron, Yann Nouvellon, Guerric le Maire, Jean-Pierre Bouillet, Jean-Christophe Domec, Juan Sinforiano Delgado Rojas, Cassio Hamilton Abreu-Junior, Patricia Battie-Laclau, Ivan Cornut, Amandine Germon, Jose Leonardo De Moraes Goncalves, Agnes Robin, Jean-Paul Laclau
Summary: The application of potassium fertilization in tropical plantations can increase tree growth, but it may also reduce the hydraulic compensation to growth, potentially increasing the risk of drought-induced dieback under climate change.
PLANT CELL AND ENVIRONMENT
(2021)
Article
Plant Sciences
Meng-Yuan Huang, Shau-Lian Wong, Jen-Hsien Weng
Summary: The study compared the rapid light response of electron transport rate (ETRR) and the steady-state light response of CO2 exchange rate (A(S)) in different woody and fern species. The results showed a close relationship between ETRR and A(S) under well-watered conditions, but the relationship became less close under low soil water and air humidity conditions.
Article
Environmental Sciences
Matthew Haworth, Giovanni Marino, Alessandro Materassi, Antonio Raschi, Charles P. Scutt, Mauro Centritto
Summary: The limits of stomatal conductance in plants are determined by the size and density of stomata. There is an inverse relationship between stomatal size and density in both fossil and living plants. However, the functional significance of this relationship is still unclear, and it may reflect geometric constraints rather than physiological control. Understanding the tradeoffs involved in stomatal size and density and their interaction with atmospheric CO2 levels is crucial for developing more productive and climate-resilient crops.
SCIENCE OF THE TOTAL ENVIRONMENT
(2023)
Article
Ecology
Russell S. Crosbie, Kate L. Holland, Tim R. McVicar
Summary: Rivers in arid regions rely on flow from upstream wetter regions and experience high transmission losses in downstream flows. This study presents a methodology using satellite remotely sensed actual evapotranspiration estimates to partition these losses. Applied to the floodplain of Cooper Creek in central Australia, the results show that 82% of transmission losses occur on the floodplain, 13% in the riparian zone, and 5% from open water in the river channel and waterholes. This method can be applied to other data-poor arid river systems.
Article
Plant Sciences
Collin W. Ahrens, Alexander Watson-Lazowski, Guomin Huang, David T. Tissue, Paul D. Rymer
Summary: Local adaptation is a driver of biological diversity, with species developing analogous or alternative solutions to ecological challenges. This study found that divergent evolution dominates the adaptation of different species, even under similar ecological conditions.
PLANT CELL AND ENVIRONMENT
(2022)
Article
Ecology
Robert J. J. Griffin-Nolan, Jeff Chieppa, Alan K. K. Knapp, Uffe N. N. Nielsen, David T. T. Tissue
Summary: Leaf hydraulic traits play a crucial role in plant drought tolerance and responses to climate change. This study focused on perennial grass species in eastern Australia and investigated the trade-offs between drought tolerance and plant morphology. The results showed that taller and more productive grass species had less drought-tolerant leaves, characterized by low leaf dry matter content and less negative leaf hydraulic conductance. Stomatal closure and turgor loss occurred at more negative leaf water potential in species with greater tiller production. These findings contribute to our understanding of grass hydraulic traits and their responses to drought in Australia.
FUNCTIONAL ECOLOGY
(2023)
Article
Ecology
Anne Griebel, Matthias M. Boer, Chris Blackman, Brendan Choat, David S. Ellsworth, Paul Madden, Belinda Medlyn, Victor Resco de Dios, Agnieszka Wujeska-Klause, Marta Yebra, Nicolas Younes Cardenas, Rachael H. Nolan
Summary: Plant traits, atmospheric conditions, and hydrological conditions have a significant impact on the live fuel moisture content (LFMC) in wildfire activity. Combining biophysical and satellite-based models can lead to more accurate predictions and monitoring of wildfire occurrences.
FUNCTIONAL ECOLOGY
(2023)
Article
Plant Sciences
Anna Gardner, Mingkai Jiang, David S. Ellsworth, A. Robert MacKenzie, Jeremy Pritchard, Martin Karl-Friedrich Bader, Craig V. M. Barton, Carl Bernacchi, Carlo Calfapietra, Kristine Y. Crous, Mirindi Eric Dusenge, Teresa E. Gimeno, Marianne Hall, Shubhangi Lamba, Sebastian Leuzinger, Johan Uddling, Jeffrey Warren, Goran Wallin, Belinda E. Medlyn
Summary: Optimal stomatal theory predicts that stomata adjust their behavior to maximize photosynthesis and minimize water loss. This study tested the applicability of this theory to predict the stomatal responses to elevated CO2 and differences among woody plant types. The results showed that all plant types increased their water-use efficiency with increasing CO2 levels, with the increase in photosynthesis having a stronger effect than the decrease in stomatal conductance. The findings suggest that the unified stomatal optimization model can accurately describe stomatal behavior under changing CO2 conditions.
Article
Plant Sciences
Yun-Bing Zhang, Marina Correa Scalon, Jing-Xin Liu, Xiao-Yang Song, Da Yang, Yong-Jiang Zhang, David S. Ellsworth, Jiao-Lin Zhang
Summary: Mistletoes have higher concentrations of phosphorus, potassium, boron, and nitrogen isotope ratio, and lower carbon isotope ratio compared to their hosts, indicating lower water-use efficiency. Environmental conditions and the nutrient status of hosts play important roles in determining mistletoe nutrient pools.
Correction
Plant Sciences
Ximeng Li, Benye Xi, Xiuchen Wu, Brendan Choat, Jinchao Feng, Mingkai Jiang, David Tissue
FRONTIERS IN PLANT SCIENCE
(2023)
Article
Plant Sciences
Scott N. Johnson, Rebecca K. Vandegeer, Justin O. Borevitz, Susan E. Hartley, David T. Tissue, Casey R. Hall
Summary: A common garden experiment using 57 accessions of Brachypodium distachyon from different Mediterranean locations showed a negative correlation between silicon accumulation and temperature variables, as well as precipitation seasonality. However, these relationships were only observed in low-silicon soils and not in silicon-supplemented soils. These findings suggest that geographical origin and prevailing climatic conditions may influence patterns of silicon accumulation in grasses.
Article
Biodiversity Conservation
Renee M. Marchin, Belinda E. Medlyn, Mark G. Tjoelker, David S. Ellsworth
Summary: This study investigates the decoupling phenomenon between stomatal conductance (g(s)) and net photosynthesis (A(net)) under high temperatures. It is found that plants with ample water access reduce A(net) and use transpirational cooling, while droughted plants rely on other mechanisms to avoid lethal temperatures.
GLOBAL CHANGE BIOLOGY
(2023)
Article
Environmental Sciences
Yi Yu, Luigi J. Renzullo, Tim R. Mcvicar, Brendan P. Malone, Siyuan Tian
Summary: This study proposed an improved version of the ESTARFM method (ubESTARFM) to generate high spatiotemporal resolution land surface temperature (LST) estimates. Through a comparison evaluation with in-situ observations and ECOSTRESS satellite data, it was found that ubESTARFM can avoid systematic bias accumulation, substantially reduce uncertainty deviation, and maintain a good level of correlation with validation datasets when compared to ESTARFM. This method has the potential to be applied using LST data acquired from geostationary platforms, enabling better farm and regional-scale water management strategies to be implemented.
REMOTE SENSING OF ENVIRONMENT
(2023)
Review
Environmental Sciences
Yuting Yang, Michael L. Roderick, Hui Guo, Diego G. Miralles, Lu Zhang, Simone Fatichi, Xiangzhong Luo, Yongqiang Zhang, Tim R. McVicar, Zhuoyi Tu, Trevor F. Keenan, Joshua B. Fisher, Rong Gan, Xuanze Zhang, Shilong Piao, Baoqing Zhang, Dawen Yang
Summary: Evapotranspiration (ET), which is regulated by vegetation, plays a central role in water, energy, and carbon cycles. There has been a global increase in ET since the 1980s, primarily driven by vegetation greening. The impacts of specific drivers on ET, such as CO2 fertilization and land use change, are uncertain at a global scale but have regional effects. Improving model validation, understanding key processes, and data-model fusion techniques are essential for better understanding ET characteristics.
NATURE REVIEWS EARTH & ENVIRONMENT
(2023)
Article
Horticulture
Fatemeh Rasouli, Mohammad Babla, Lihua Li, Weiguang Liang, Miing-Tiem Yong, Talaat Ahmed, David Tissue, Samsul Huda, Zhong-Hua Chen
Summary: This study focused on the physiological traits and productivity of three eggplant cultivars in a high-tech glasshouse. The results showed that the cultivar Tracey had higher leaf growth and number of flowers per node compared to the other two varieties. Despite having the lowest net CO2 assimilation, Tracey produced the highest yield and better water use efficiency in terms of agronomic performance. However, further research is needed to understand the varietal performance of greenhouse eggplants and establish benchmarks for large-scale sustainable production.
Article
Forestry
Ting Wu, Yuting Song, David Tissue, Wei Su, Hanyu Luo, Xu Li, Shimin Yang, Xujun Liu, Junhua Yan, Juan Huang, Juxiu Liu
Summary: This study investigated the phenotypic plasticity of four tree species under different precipitation and nitrogen deposition conditions. The results showed that changing precipitation reduced photosynthetic rate in Castanopsis fissa, while high nitrogen deposition increased photosynthetic rate in Ormosia pinnata. The growth of Dalbergia odorifera might be affected by precipitation and nitrogen deposition. These findings have important implications for selecting tree species that can adapt to future climate change.
Review
Environmental Sciences
Nate G. McDowell, Gerard Sapes, Alexandria Pivovaroff, Henry D. Adams, Craig D. Allen, William R. L. Anderegg, Matthias Arend, David D. Breshears, Tim Brodribb, Brendan Choat, Herve Cochard, Miquel De Caceres, Martin G. De Kauwe, Charlotte Grossiord, William M. Hammond, Henrik Hartmann, Gunter Hoch, Ansgar Kahmen, Tamir Klein, D. Scott Mackay, Marylou Mantova, Jordi Martinez-Vilalta, Belinda E. Medlyn, Maurizio Mencuccini, Andrea Nardini, Rafael S. Oliveira, Anna Sala, David T. Tissue, Jose M. Torres-Ruiz, Amy M. Trowbridge, Anna T. Trugman, Erin Wiley, Chonggang Xu
Summary: Drought-associated woody-plant mortality is increasing globally, impacting climate, biodiversity, and resources. This review synthesizes knowledge of the mechanisms underlying drought-related tree death, including water and carbon depletion, and the influence of soil-to-root conductance and carbon supply rates.
NATURE REVIEWS EARTH & ENVIRONMENT
(2022)
Article
Forestry
Hang Han, Benye Xi, Ye Wang, Jinchao Feng, Ximeng Li, David T. Tissue
Summary: Urban forests face challenges in survival and performance due to urban drought, which affects the sustainability and functionality of urban vegetation. This study investigates the plant hydraulic and carbon traits of urban forest species, along with their morphological characteristics, to guide species selection and management. The findings show significant variations in drought resistance among different species, with no correlation to growth form. Additionally, species-specific hydraulic conductivity is observed. Overall, species morphology provides limited information regarding physiological drought resistance.
