Article
Forestry
Songmei Shi, Xiao Xu, Xingshui Dong, Chenyang Xu, Yuling Qiu, Xinhua He
Summary: This study investigated the effects of anticipated future elevated CO2 on growth, physiology, and nutrient uptake in two widely cultivated mulberry varieties in southwest China. The results showed that elevated CO2 significantly increased plant growth but decreased chlorophyll concentrations and photosynthetic rates, while also leading to lower leaf N and P concentrations. Nutrient dilution and changes in plant demand were identified as key factors driving the reduction of leaf N and P under elevated CO2 conditions.
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
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
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
Agronomy
Anowarul Bokshi, Rebecca J. Thistlethwaite, Edward D. Chaplin, Erasmus Kirii, Richard M. Trethowan, Daniel K. Y. Tan
Summary: High temperatures and increasing CO2 concentrations pose a major threat to global wheat production. This research evaluated Australian wheat cultivars for heat tolerance and identified physiological traits associated with adaptation to high temperatures. The findings provide valuable candidates for breeding and selecting wheat cultivars that can better adapt to changing climate conditions.
JOURNAL OF AGRONOMY AND CROP SCIENCE
(2022)
Article
Plant Sciences
Shuai Li, Christopher A. Moller, Noah G. Mitchell, DoKyoung Lee, Elizabeth A. Ainsworth
Summary: The research found that bioenergy sorghum is tolerant to elevated tropospheric ozone concentration and could be used to enhance biomass productivity in regions with ozone pollution.
PLANT CELL AND ENVIRONMENT
(2021)
Article
Plant Sciences
James Bunce
Summary: Experimental systems simulating future elevated CO2 conditions often have fluctuating CO2, which can reduce photosynthesis by decreasing stomatal conductance and the photochemical efficiency of photosystem II. However, the impact of CO2 fluctuations varies among different species, with some showing no change in photosynthesis and stomatal conductance.
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
Faliang Zeng, Lin Zhu, Guojiao Wang, Yinpei Liang, Dianrong Ma, Jiayu Wang
Summary: Leaf anatomy plays a crucial role in determining photosynthesis performance. In this study, two rice recombinant inbred lines, H138 and H217, showed higher net CO2 assimilation compared to their parent Sasanishiki, mainly due to improved leaf anatomy. The improvement in leaf anatomy was associated with increased mesophyll cell number and area, higher chlorophyll content, and increased expression of genes involved in light-harvesting. Furthermore, higher stomatal and mesophyll conductance in H138 and H217 contributed to improved leaf photosynthesis.
FRONTIERS IN PLANT SCIENCE
(2022)
Article
Plant Sciences
T. Casey Barickman, Omolayo J. Olorunwa, Akanksha Sehgal, C. Hunt Walne, K. Raja Reddy, Wei Gao
Summary: The experiment found that low-temperature stress led to rapid closure of stomata and a 21% decline in net photosynthesis. When elevated CO2 interacted with low-temperature stress, chlorophylls and carotenoids decreased. Under high-temperature stress, basil showed increased stomatal conductance, intercellular CO2 concentration, apparent quantum yield, maximum photosystem II efficiency, and maximum net photosynthesis rate. Increasing the growth temperature from 30/22 degrees C to 38/30 degrees C under elevated CO2 significantly increased the antioxidants content of basil.
Article
Forestry
Diana Eckert, Helle Juel Martens, Lianhong Gu, Anna Monrad Jensen
Summary: This study investigated the differences in CO2 refixation among temperate and boreal woody species, revealing that evergreens, particularly late successional species, refixated a significantly higher amount of CO2 throughout the entire growing season. Additionally, higher mesophyll resistance, stomatal resistance, and leaf mass per area were positively correlated with refixation percentage.
Article
Plant Sciences
Zhan Chen, Siyuan Ye, Jixin Cao, He Shang
Summary: This study found that nitrogen fertilization significantly increased leaf nitrogen content, reduced starch content, and affected the leaf C:N ratio. Additionally, nitrogen fertilization altered the response of Schima superba to elevated CO2, indicating a potential modification in plant growth performance.
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
Plant Sciences
Qiangqiang Zhang, Yuhan Yang, Shaobing Peng, Yong Li
Summary: The study reveals that rice genotypes with larger stomata maintain higher nocturnal stomatal conductance, leading to lower leaf temperatures through transpirational cooling. Stomatal anatomy and leaf morphology play a crucial role in regulating stomatal conductance and leaf temperature in rice plants.
Article
Horticulture
Hesham A. Ahmed, Yuxin Tong, Lie Li, Suliaman Q. Sahari, Abdulkarem M. Almogahed, Ruifeng Cheng
Summary: This study investigates the effects of CO2 concentration, illumination intensity, and air speed on the growth, gas exchange, and light use efficiency of lettuce plants grown under artificial lighting. The results show that CO2 concentration and illumination intensity have a strong influence on lettuce growth and gas exchange, while air speed enhances CO2 transport during photosynthesis. The findings provide valuable insights for indoor cultivation systems using artificial lighting to grow lettuce.
