Article
Plant Sciences
Silvina Dayer, Jose Carlos Herrera, Zhanwu Dai, Regis Burlett, Laurent J. Lamarque, Sylvain Delzon, Giovanni Bortolami, Herve Cochard, Gregory A. Gambetta
Summary: The study found that nighttime water loss in grapevines is relatively low compared to daytime transpiration, with daytime transpiration being the main cause of soil and plant water potential decreases; unlike daytime transpiration, nighttime transpiration does not respond to vapor pressure deficit and may be influenced by circadian regulation; modeling simulations indicate that nighttime stomatal conductance is not a significant factor in reaching critical hydraulic thresholds in grapevines.
PLANT CELL AND ENVIRONMENT
(2021)
Article
Plant Sciences
Zaiqiang Yang, Yuhan Jiang, Rangjian Qiu, Xuewen Gong, Evgenios Agathokleous, Wei Hu, Brent Clothier
Summary: Heat stress has a significant impact on plant production, and the response mechanism of evapotranspiration to heat stress is still unclear. This study investigated the effects of heat stress on transpiration and evapotranspiration in gerbera plants. The results showed that transpiration was mainly inhibited at the beginning of heat stress, and the duration and extent of inhibition increased with longer heat stress duration.
FRONTIERS IN PLANT SCIENCE
(2023)
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
Forestry
Kenneth J. Davidson, Julien Lamour, Alistair Rogers, Shawn P. Serbin
Summary: Many terrestrial biosphere models rely on the relationship between stomatal conductance and photosynthesis. This study found that the choice of measurement method can impact parameters representing stomatal response, with afternoon measurements resulting in significantly different values. These differences in parameter estimates directly affect canopy function models.
Review
Environmental Sciences
Faqrul Islam Chowdhury, Carles Arteaga, Mohammed Shafiul Alam, Iftakharul Alam, Victor Resco de Dios
Summary: Incomplete stomatal closure during the night leads to significant water losses. Negative effects of vapour pressure deficit, predawn water potential, air temperature, and salinity on stomatal conductance were found, with the circadian clock playing a significant role.
SCIENCE OF THE TOTAL ENVIRONMENT
(2022)
Article
Plant Sciences
Maria Karatassiou, Panagiota Karaiskou, Eleni Verykouki, Sophia Rhizopoulou
Summary: This study compared the leaf hydraulic functionality of co-occurring evergreen and deciduous shrubs grown on Olympus Mountain. The results demonstrated different hydraulic tactics between the deciduous and evergreen shrubs, with higher hydraulic conductance and lower stomatal conductance observed in the deciduous plants. Positive correlations were also found between water potential and transpiration in the deciduous shrubs.
Article
Plant Sciences
Nikolaos Konstantis, Konstantinos Koskorellos, Areti Balou, Athina Paravolidaki, George Garantziotis, Christina Eleni Koulopoulou, Athanasios Koulopoulos, George Zervoudakis
Summary: This study measured physiological parameters of wounded plants at different developmental stages and found that the plants' response to leaf wounding varied depending on the developmental stage. Basil plants at the vegetative stage were found to be more tolerant to leaf wounding compared to those at the budding and flowering stages.
Article
Biotechnology & Applied Microbiology
Xiuying Liang, Xichen Xu, Zhiwei Wang, Lei He, Kaiqi Zhang, Bo Liang, Junli Ye, Jiawei Shi, Xi Wu, Mingqiu Dai, Wanneng Yang
Summary: A new method was proposed to automatically and nondestructively measure stomatal traits, utilizing portable microscopes and different models to detect and extract stomatal features; The study found that mutant plants exhibited higher resilience in stomatal traits compared to wild-type under different conditions; The development of a method for measuring stomatal traits across multiple species and a user-friendly web portal were highlighted.
PLANT BIOTECHNOLOGY JOURNAL
(2022)
Article
Agriculture, Multidisciplinary
Isa A. M. Yunusa, Anthony R. Palmer, Jamal Kamululdeen, Jehangir F. Punthakey
Summary: Despite differences in canopy and stomatal traits, water-use in okra and tomato showed relatively narrow differences in response to salinity.
JOURNAL OF THE SCIENCE OF FOOD AND AGRICULTURE
(2022)
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
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
Horticulture
Ruiqin Bai, Yuman Lin, Yiwei Jiang
Summary: Salinity stress can adversely affect plant growth and physiology, as shown in this study on lily hybrids. Different levels of salinity stress resulted in decreased growth, photosynthetic rate, and antioxidant activity in the lily hybrids, with some hybrids exhibiting higher tolerance and maintaining better physiological functions under high salinity conditions.
SCIENTIA HORTICULTURAE
(2021)
Article
Forestry
Luiz Gustavo Martinelli Delgado, Richardson Barbosa Gomes da Silva, Monica Moreno Gabira, Angelica Lino Rodrigues, Danilo Simoes, Luiz Fernando Rolim de Almeida, Magali Ribeiro da Silva
Summary: This study analyzed the effects of different mean leaf angles on irrigation efficiency and physiological responses of tree seedlings. The results showed that tree species with positive mean leaf angles exhibited improved physiological responses with smaller irrigation depths, while species with negative mean leaf angles required larger irrigation depths to maintain normal physiological responses.
Article
Environmental Sciences
Muhammad Shahinur Alam, David William Lamb, Nigel W. M. Warwick
Summary: Estimating transpiration as an individual component of canopy evapotranspiration using a theoretical approach simplifies the complex process of partitioning evapotranspiration. In an experimental setting, a model based on intercepted radiation was developed to predict transpiration and validated through actual measurements, showing high consistency within different LAI ranges.
Article
Agronomy
Jiaxin Jin, Tao Yan, Han Wang, Xuanlong Ma, Mingzhu He, Ying Wang, Weifeng Wang, Fengsheng Guo, Yulong Cai, Qiuan Zhu, Jin Wu
Summary: This study found seasonal variations in G(1) and its direct correlation with leaf area index (LAI) phenology using data from temperate forest FLUXNET sites. The use of LAI for parameterizing G(1) successfully reduced uncertainty in transpiration modeling.
AGRICULTURAL AND FOREST METEOROLOGY
(2022)
Editorial Material
Forestry
Augusto Cesar Franco, Juan Carlos Alvarez-Yepiz
TREES-STRUCTURE AND FUNCTION
(2022)
Article
Plant Sciences
Fernando A. O. Silveira, Davi R. Rossatto, Hermann Heilmeier, Gerhard E. Overbeck
Summary: The special issue focuses on the impact of fires on vegetation and ecosystems and provides suggestions for improving fire management practices to enhance human well-being, ensure sustainable resource use, and promote biodiversity conservation and climate change mitigation.
Article
Plant Sciences
Samuel W. Flake, Eliane A. Honda, Natashi A. L. Pilon, William A. Hoffmann, Giselda Durigan
Summary: The encroachment of forests into savannas is a common phenomenon, with the rate depending on factors such as soil conditions, species composition, and changes in stand structure. Savanna specialist trees are being replaced by generalist species, causing faster rates of stand development. Generalists are able to persist in forests and have faster growth rates, enabling them to outcompete and suppress savanna specialists.
JOURNAL OF ECOLOGY
(2022)
Article
Plant Sciences
Luiz Felipe Souza Pinheiro, Natashi Aparecida Lima Pilon, Davi Rodrigo Rossatto, Rosana Marta Kolb
Summary: This study investigated the effects of shading and litter deposition on the ground-layer plant community in a Neotropical savanna. The results showed that shading had negative effects on all evaluated parameters, while litter addition had only minor effects. Increased shade resulted in a sharp decrease in the above-ground biomass of monocots. The study highlights the importance of light as an environmental filter and the potential impact of woody encroachment on savanna structure and functioning.
JOURNAL OF VEGETATION SCIENCE
(2022)
Article
Plant Sciences
Joao Pedro Machado de Oliveira, Klecia Gili Massi, Davi Rodrigo Rossatto
Summary: The timing of flowering and fruiting in plants is mainly influenced by environmental factors. A comparative study of congeneric species pairs in forest and savanna environments found that savanna species have shorter flowering duration compared to forest species. Despite similarities in other reproductive phenological traits, differences in flowering duration were observed in some congeneric pairs.
SOUTH AFRICAN JOURNAL OF BOTANY
(2022)
Article
Agronomy
Gabriela Viana de Oliveira Lima, Yumi Oki, Leandra Bordignon, Wallison Kenedy Siqueira, Marcel Giovanni Costa Franca, Daniela Boanares, Augusto Cesar Franco, Geraldo Wilson Fernandes
Summary: This study evaluates the effects of increased CO2 concentration and temperature separately and combined on millet growth and grain production. The results show that high temperature leads to taller plants, while both elevated CO2 and temperature result in significantly taller plants. However, grain production remains unaffected under different environmental conditions.
ACTA SCIENTIARUM-AGRONOMY
(2022)
Article
Plant Sciences
Alessandra Fidelis, Heloiza L. Zirondi, Davi R. Rossatto, Vagner Zanzarini
Summary: Post-fire flowering is an important plant trait in fire-prone ecosystems. In a study conducted in a tropical savanna, it was found that both wet- and dry-season fires can stimulate flowering in grass species. Exclusion of fire led to a decrease in the number of flowering individuals and reproductive tillers of grass species.
JOURNAL OF VEGETATION SCIENCE
(2022)
Article
Ecology
Natashi A. Lima Pilon, Mario G. B. Cava, William A. Hoffmann, Rodolfo C. R. Abreu, Davi R. Rossatto, Giselda Durigan
Summary: Frost effects on savanna plant communities are similar to those from fire, altering community structure and species composition. However, the impacts of frost on the ground-layer community are not well-studied. This study in the Cerrado region of Brazil examined the effects of frost on ground-layer plant species along a tree cover gradient. Frost caused immediate dieback of perennial ground-layer, particularly in areas with low tree cover. While frost did not reduce species richness, it increased litter cover and decreased bare soil, potentially hindering crucial processes for plant population recovery.
Article
Plant Sciences
Ariadne Cristina de Antonio, Marina Correa Scalon, Davi Rodrigo Rossatto
Summary: Savannas in southeastern Brazil are often damaged by frost events, leading to the death of leaves and branches in many species. A recent study in São Paulo State, Brazil, used a strong frost event in 2021 to investigate the effects on vegetation and found that species with larger and thicker leaves were more susceptible to damage. This suggests that leaf morphology could play a role in determining the ability of species to withstand future frost events.
Article
Plant Sciences
Paulo Sergio Neves dos Santos, Davi Rodrigo Rossatto, Marla Ibrahim Uehbe de Oliveira, Ana Paula Lima do Couto-Santos, Ligia Silveira Funch
Summary: This study examined the influence of environmental conditions and genus on trait variation in Myrteae populations in different vegetation types in northeastern Brazil. Results showed that wood density was mainly determined by genus, while specific leaf area was mostly influenced by the environment.
AUSTRALIAN JOURNAL OF BOTANY
(2023)
Article
Ecology
Zachary J. Gold, Adam F. A. Pellegrini, Tyler K. Refsland, Romina J. Andrioli, Marlin L. Bowles, Dale G. Brockway, Neil Burrows, Augusto C. Franco, Steve W. Hallgren, Sarah E. Hobbie, William A. Hoffmann, Kevin P. Kirkman, Peter B. Reich, Patrice Savadogo, Divino Silverio, Kirsten Stephan, Tercia Strydom, J. Morgan Varner, Dale D. Wade, Allan Wills, A. Carla Staver
Summary: Fire-vegetation feedbacks are crucial for maintaining global savanna and forest distributions. Through studying herbaceous vegetation responses to fire at 30 sites across four continents, we found that herbaceous vegetation increased in abundance after fire, with wetter and cooler ecosystems showing larger responses. Savannas had a significantly higher difference in herbaceous vegetation abundance between burned and unburned areas compared to forests, indicating the importance of fire in shaping the vegetation structure of these ecosystems.
Article
Biodiversity Conservation
Aline Lopes, Layon Orestes Demarchi, Maria Teresa Fernandez Piedade, Jochen Schongart, Florian Wittmann, Cassia Beatriz Rodrigues Munhoz, Cristiane Silva Ferreira, Augusto Cesar Franco
Summary: A group of invasive grasses from Africa and Asia has spread in the Neotropics. The future distribution patterns of these grasses under climate change have been poorly studied. Ecological niche modeling was used to project the distribution of ten invasive grass species under different climate scenarios. The results showed that the current suitable areas for these species accounted for 51.3% of the Neotropics, and the projected future suitable areas ranged from 47.0% to 57.6% depending on the scenario. Some species are expected to expand their range while others will retract. Currently, these invasive species overlap in dry regions of the Neotropics, but this is expected to change under different climate scenarios.
PERSPECTIVES IN ECOLOGY AND CONSERVATION
(2023)
Article
Plant Sciences
E. Calazans, A. Lopes, L. Girotto, A. L. O. de Paula, A. C. Franco, C. S. Ferreira
Summary: The invasive grass Arundo donax L. produces sterile flowers in Brazil and propagates through rhizomes and stem fragments. Fragment size, desiccation period, and water column height affect its bud sprouting capacity. Cutting the plant without removing it can intensify its invasion potential, especially in the rainy season.
AUSTRALIAN JOURNAL OF BOTANY
(2023)
Article
Plant Sciences
Augusto Cesar Franco, Risolandia Bezerra de Melo, Cristiane Silva Ferreira, Thomas Christopher Rhys Williams
Summary: Fatty acids stored as triacylglycerols (TAGs) in seeds are an important source of carbon and energy for germination and seedling development, particularly for plants with small wind-dispersed seeds, allowing greater efficiency in storing both energy and carbon. Wind-dispersed species produced seeds that not only were richer in FAs but in saturated FAs. Zoochorous species, which reached larger seed sizes, had seed TAGs with higher proportion of polyunsaturated FAs.
Article
Forestry
Isadora M. Ribeiro, Christina C. Vinson, Guilherme C. Coca, Cristiane da S. Ferreira, Augusto C. Franco, Thomas C. R. Williams
Summary: Flood tolerance is crucial for the survival of tree species, and tropical trees can adapt to flooding through adjustments in metabolism, physiology, and morphology. This study found that Amazonian populations of Guazuma ulmifolia exhibited greater adaptation to flooding compared to Cerrado populations, with increased shoot length and more rapid restoration of normal metabolism.