Article
Plant Sciences
Yazen Al-Salman, Oula Ghannoum, Francisco Javier Cano
Summary: Most studies assume midday gas exchange measurements can reflect the leaf's daytime performance, but the fluctuation of stomatal conductance and photosynthesis due to diurnal rhythms can affect water use efficiency. This study on six Sorghum lines found that the highest photosynthesis and stomatal conductance and lowest water use efficiency were observed at midday. Water use efficiency correlated positively with morning and midday values and negatively with the time taken for stomata to close after transition to low light intensity.
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
Plant Sciences
Junchao Xing, Min Li, Jinxin Li, Wanna Shen, Ping Li, Jiaping Zhao, Yinan Zhang
Summary: B. dothidea inhibits photosynthesis in Populus bolleana by reducing stomatal opening, hindering light energy conversion and utilization, and reducing the content of photosynthetic pigments. It also leads to the accumulation of sucrose and starch in leaves.
FRONTIERS IN PLANT SCIENCE
(2022)
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
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
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
Jianfei Zhou, Xiaodong Jiang, Evgenios Agathokleous, Xiaojing Lu, Zaiqiang Yang, Ruiying Li
Summary: High relative humidity and high temperature due to climate change can severely affect the growth and photosynthetic performance of chrysanthemums. This study found that there is an interactive effect between temperature and relative humidity on chrysanthemum photosynthesis, with temperature having a greater impact than relative humidity.
FRONTIERS IN PLANT SCIENCE
(2023)
Article
Cell Biology
Chung- Chen, Kuan-Hung Lin, Meng-Yuan Huang, Shau-Lian Wong, Tien-Szu Liao, Ming-Nan Chen, Jen-Hsien Weng, Mei-Li Hsueh, Yu-Hsiang Lai, Ching-Wen Wang
Summary: This study investigated the response of mangrove plants to salinity and submergence in different tidal conditions. The photosynthetic capacity and chlorophyll fluorescence parameters were measured, revealing that immersed Kandelia obovata plants were tolerant to submergence, while Rhizophora stylosa plants were salt-tolerant. Treatment with 30 ppt salinity resulted in lower photosynthetic rates and increased non-photochemical quenching and heat quenching.
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
Agronomy
Xiaojie Qin, Deke Xing, Yanyou Wu, Weixu Wang, Meiqing Li, Kashif Solangi
Summary: This study investigated the diurnal variations in leaf electrophysiology, water potential, gas exchange, and chlorophyll fluorescence parameters of three plant species in karst areas. The results showed that different plant species have different strategies for regulating photosynthetic performance.
Article
Horticulture
Shahnoosh Hayamanesh, Richard Trethowan, Tariq Mahmood, Nabil Ahmad, Claudia Keitel
Summary: Heat stress affects the physiological traits of okra genotypes, and molecular characterization was used to identify suitable parents for crossing.
Article
Plant Sciences
Massimo Bertamini, Michele Faralli, Claudio Varotto, Maria Stella Grando, Luca Cappellin
Summary: This study found that under high temperature conditions, the emission of leaf monoterpenes significantly increased in the INRA809 grape variety, while there was no significant change in the SMA130 variety. Additionally, when leaf temperature exceeded 30 degrees Celsius, INRA809 maintained higher photosynthetic rates and stomatal conductance values. This suggests that monoterpenes emission plays a significant role in heat tolerance of grapes under high temperatures.
Article
Horticulture
Katalin Jezdinska Slezak, Ales Jezdinsky, Miroslav Vachun, Oldriska Sotolarova, Robert Pokluda, Jiri Uher
Summary: In a pot experiment, it was observed that the early-flowering Narcissus pseudonarcissus cv. 'Dutch Master' had higher stomatal conductance, lower transpiration rate, and higher chlorophyll content compared to the late-flowering N. poeticus cultural form. The basic chlorophyll fluorescence values for 'Dutch Master' were lower and chlorophyll content values were higher than for N. poeticus. The changes in chlorophyll fluorescence and content values over the season were greatest near the leaf tip for both taxa.
Article
Environmental Sciences
Baocheng Zhang, Lingyan Zhou, Xuhui Zhou, Yanfen Bai, Maokui Zhan, Ji Chen, Chengyuan Xu
Summary: This study examined the effects of insects and pathogens on plant photosynthesis using a meta-analysis approach. The results showed that biotic disturbance significantly decreased photosynthetic rate and affected various parameters and chlorophyll fluorescence properties. Pathogens had a greater impact on photosynthesis than insects. Crop plants were more sensitive to biotic disturbance, posing challenges to agricultural systems in the future.
SCIENCE OF THE TOTAL ENVIRONMENT
(2022)
Article
Agronomy
M. K. Malini, Sourabh Karwa, Payal Priyadarsini, Pramod Kumar, Shivani Nagar, Mahesh Kumar, Sudhir Kumar, Viswanathan Chinnusamy, Renu Pandey, Madan Pal
Summary: Rising air temperature is a major constraint for crop productivity. Rice crops are sensitive to high-temperature stress, which affects photosynthesis and gas exchange traits. A study screened seventy-three Indian rice accessions based on their photosynthetic response under high temperature and characterized two contrasting accessions for heat tolerance. The tolerant accession showed marginal decrease in photosynthesis but significant increase in stomatal conductance and transpiration, while the sensitive accession exhibited large reductions in photosynthesis and slight increases in stomatal conductance and transpiration. The study concludes that tolerant rice accessions can be used in breeding programs for developing climate-resilient rice genotypes.
