Article
Plant Sciences
Jeremiah M. Hlahla, Mpho S. Mafa, Rouxlene van der Merwe, Orbett Alexander, Mart-Mari Duvenhage, Gabre Kemp, Makoena J. Moloi
Summary: This study investigated the photosynthetic efficiency and carbohydrate responses of six edamame cultivars under drought stress. The results showed that edamame exhibited different physiological changes and carbohydrate content variations under drought conditions. This study provides important information for understanding the drought defense responses in edamame and for screening drought tolerance based on physiological and biochemical characteristics.
Article
Plant Sciences
Adam D. Collins, Michael G. Ryan, Henry D. Adams, Lee Turin Dickman, Nuria Garcia-Forner, Charlotte Grossiord, Heath H. Powers, Sanna Sevanto, Nate G. McDowell
Summary: Short-term plant respiration increases exponentially with rising temperature, but drought could reduce respiration by reducing growth and metabolism. Differences in response to elevated temperature were related to substrate availability and stomatal response to leaf water potential, suggesting that species responses will be critical in ecosystem response to a warmer climate.
PLANT CELL AND ENVIRONMENT
(2021)
Article
Plant Sciences
Chiara Amitrano, Carmen Arena, Valerio Cirillo, Stefania De Pascale, Veronica De Micco
Summary: The study found that plants grown under different VPD conditions exhibited different physiological and anatomical traits. Plants grown under high VPD conditions showed reduced gas exchange parameters such as stomatal density and vein density, leading to decreased photosynthesis and stomatal conductance.
ENVIRONMENTAL AND EXPERIMENTAL BOTANY
(2021)
Article
Plant Sciences
Zhuang Xiong, Zhigang Dun, Yucheng Wang, Desheng Yang, Dongliang Xiong, Kehui Cui, Shaobing Peng, Jianliang Huang
Summary: Stomatal morphology plays an important role in regulating leaf gas exchange and photosynthetic efficiency under fluctuating light conditions. Smaller and denser stomata lead to faster stomatal response to light fluctuations but lower intrinsic water use efficiency. Stomatal morphology has less impact on stomatal conductance, and there is minimal correlation between steady-state and non-steady-state stomatal conductance among different genotypes. These findings highlight the significance of stomatal morphology in optimizing photosynthetic efficiency and plant growth under fluctuating light.
FRONTIERS IN PLANT SCIENCE
(2022)
Article
Plant Sciences
Mohammad Yaghoubi Khanghahi, Beniamino Leoni, Carmine Crecchio
Summary: In this study, inoculation of durum wheat with PGPB was found to enhance PSII photochemistry efficiency, increase grain yield, and maintain plant growth under stress conditions, reducing the need for chemical fertilizers.
ACTA PHYSIOLOGIAE PLANTARUM
(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
Plant Sciences
Yuqi Zhang, Elias Kaiser, Tao Li, Leo F. M. Marcelis
Summary: The stress of NaCl affects stomatal behavior and photosynthesis in tomato plants, with osmotic effects decreasing stomatal conductance and increasing stomatal responses to light intensity shifts, while ionic effects reduce photosynthetic capacity, CO2 carboxylation rate, and stomatal conductance. With increasing leaf age, the rates of light-triggered stomatal movement and photosynthetic induction decreased.
JOURNAL OF EXPERIMENTAL BOTANY
(2022)
Article
Agronomy
Yanting Hu, Zhihui Sun, Yelin Zeng, Shuai Ouyang, Liang Chen, Pifeng Lei, Xiangwen Deng, Zhonghui Zhao, Xi Fang, Wenhua Xiang
Summary: Understanding the stomatal regulation mechanisms in woody species is important for understanding their adaptations to different environments. This study investigated tree-level stomatal regulation in various tree species and found that it is more closely related to xylem hydraulic traits than to leaf photosynthetic traits. The study also identified the factors that influence tree-level stomatal regulation, such as xylem pressure and hydraulic safety margin, and found that it is influenced by evolutionary history. Overall, maintaining water transport integrity is the major factor impacting tree-level stomatal regulation.
AGRICULTURAL AND FOREST METEOROLOGY
(2023)
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)
Review
Plant Sciences
Abdul Wakeel, Lin Wang, Ming Xu
Summary: Stomatal density, spacing, and patterning play a crucial role in gas exchange efficiency, photosynthesis, and water economy, regulated by a complex of extracellular and intracellular factors through signaling pathways. The activation of receptor-ligand complexes via MAP-kinase cascades regulates bHLH transcription factors and epidermal patterning factors, influencing stomatal transition and guard cell formation. The feedback mechanisms involving bHLH factors and the regulation of EPF2 and the ERECTA family are not fully understood yet, requiring further investigation.
Review
Biochemistry & Molecular Biology
Ruiqi Li, Ying He, Junyu Chen, Shaoyan Zheng, Chuxiong Zhuang
Summary: Photosynthesis is the largest process for converting energy on Earth and serves as the foundation for all biological activities. Optimizing light reactions is the main approach to improve photosynthetic efficiency, including increasing light absorption and conversion, enhancing non-photochemical quenching recovery, modifying enzymes in the Calvin cycle, introducing carbon concentration mechanisms in C-3 plants, rebuilding the photorespiration pathway, de novo synthesis, and altering stomatal conductance.
INTERNATIONAL JOURNAL OF MOLECULAR SCIENCES
(2023)
Article
Plant Sciences
Z. Czekus, P. Koprivanacz, A. Kukri, N. Iqbal, A. Ordog, P. Poor
Summary: Flg22 affects the guard cells of tomato plants by causing stomatal closure and a decrease in CO2 assimilation. It also leads to a decrease in sugar content and an increase in hexokinase activity. These are all defense responses of tomato plants.
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
Qian Zhang, Hao Hu, Yuzhou Jiang, Lianjuan Wang, Xiangfeng Kong, Yixuan Huang, Guixia Jia
Summary: Polyploidization is widely used in ornamental plant breeding and can lead to increased biomass production. However, the sucrose metabolism changes in lily after polyploidization using colchicine are not well understood. This study found that allotetraploid lilies had larger leaf area, slightly delayed flowering time, and higher photosynthetic parameters compared to allodiploid lilies. Furthermore, allotetraploids exhibited higher nonstructural carbohydrate contents during development and higher expression levels of sucrose metabolism-related genes.
Article
Horticulture
Hong Wang, Yujian Guo, Jianjun Zhu, Kun Yue, Kaibing Zhou
Summary: The study found that under 96 kJ/(m²·d) of UV-B radiation, mango trees showed decreased yield, decreased sugar content and vitamin C in fruits, and inhibited photosynthesis in leaves; while under 24 kJ/(m²·d), the content of photosynthetic pigments in leaves increased, but overall performance was similar to the control group.
Article
Agriculture, Multidisciplinary
Isaac Zipori, Uri Yermiyahu, Arnon Dag, Ran Erel, Alon Ben-Gal, Liu Quan, Zohar Kerem
Summary: The study found that nitrogen application affected the quality and composition of olive oil, while phosphorus and potassium did not have a significant impact. Therefore, careful fertilization, especially in terms of nitrogen application, is crucial in intensive olive orchards to prevent a decrease in oil quality due to over-fertilization.
JOURNAL OF THE SCIENCE OF FOOD AND AGRICULTURE
(2023)
Article
Agronomy
Or Sperling, Ran Erel, Arnon Dag, Uri Yermiyahu
Summary: Farmers need to adjust fertilization practices based on the nutritional requirements of crops, but there is a lack of knowledge regarding the temporal variability of nutrient requirements for perennial crops. By constructing an empirical framework and conducting research, we can provide practical and applicable fertilization information and methods for farmers.
IRRIGATION SCIENCE
(2023)
Article
Agronomy
L. Katz, A. Ben-Gal, M. Litaor, A. Naor, M. Peres, A. Peeters, V Alchanatis, Y. Cohen
Summary: This study developed a spatiotemporal decision support protocol for variable rate drip irrigation (SDSP-VRDI) in a peach orchard. The results showed that most management cells reached the target range under crop water status-based irrigation, but there were differences in the response to irrigation among different cells. Downscaling management from field to subfield scale is beneficial for precision irrigation management of orchard systems.
IRRIGATION SCIENCE
(2023)
Article
Agronomy
Jinjie Fan, Xun Wu, Yangliu Yu, Qiang Zuo, Jianchu Shi, Moshe Halpern, Jiandong Sheng, Pingan Jiang, Alon Ben-Gal
Summary: Delineating root-water-uptake (RWU) under conditions with augmented CO2 concentrations is crucial for irrigation scheduling in response to climate change. The effects of increased CO2 concentration (e[CO2]) on RWU and the development of a RWU model were studied through two experiments, which demonstrated the stimulation of plant growth and the decrease in RWU activity under e[CO2]. The RWU model accurately simulated soil water transport and wheat transpiration under e[CO2].
AGRICULTURAL WATER MANAGEMENT
(2023)
Article
Agronomy
Wenjie Meng, Jinliang Xing, Mu Niu, Qiang Zuo, Xun Wu, Jianchu Shi, Jiandong Sheng, Pingan Jiang, Quanjia Chen, Alon Ben-Gal
Summary: A root distribution-based multistage application method (RMAM) was found to improve nutrient uptake efficiency and optimize soil nutrient distribution. Compared to other fertigation scheduling strategies, RMAM had positive effects on yield and nutrient uptake during the late flowering stage and reduced leaching of certain nutrients.
AGRICULTURAL WATER MANAGEMENT
(2023)
Article
Agronomy
Ran Erel, David Yalin, Adi Kushmaro-Bier, Qianqian Li, Frederic Gerard, Natalie Toren
Summary: This study investigates the effects of soil properties, application time, and growth duration on the plant availability of polyphosphate (poly-P) and orthophosphate (ortho-P) fertilizers. It was found that Olsen-P continuously increased in poly-P amended soils, while the highest values for ortho-P were achieved immediately after application and then steadily decreased. Soil properties and growth duration significantly influenced the efficiency of ortho-P versus poly-P fertilizers.
Article
Environmental Sciences
Livia Katz, Alon Ben-Gal, M. Iggy Litaor, Amos Naor, Aviva Peeters, Eitan Goldshtein, Guy Lidor, Ohaliav Keisar, Stav Marzuk, Victor Alchanatis, Yafit Cohen
Summary: Accurate canopy extraction and temperature calculations are crucial for reducing inaccuracies in thermal image-based estimation of orchard water status. This study compared the accuracies of four canopy extraction methods and explored their effects on water status estimation.
Article
Agronomy
Uri Hochberg, Aviad Perry, Shimon Rachmilevitch, Alon Ben-Gal, Or Sperling
Summary: This study investigated the impact of short-term drought events on whole-plant water use in grapevines and associated changes in physiological attributes with the proportional reduction in transpiration. The results revealed that short drought events imposed long-term restrictions on transpiration through limitations to canopy development and stomatal conductance. These findings can contribute to predicting grapevine water uptake under drought conditions.
AGRICULTURAL AND FOREST METEOROLOGY
(2023)
Article
Agronomy
Lining Liu, Qiang Zuo, Jianchu Shi, Xun Wu, Congmin Wei, Jiandong Sheng, Pingan Jiang, Quanjia Chen, Alon Ben -Gal
Summary: Plant water deficit index (PWDI) is a critical index for irrigation scheduling that reflects the extent of abiotic stresses. Smart irrigation scheduling based on PWDI thresholds has been suggested to maximize yields and minimize negative environmental effects. A two-year experiment on drip-irrigated cotton under film mulch was conducted to investigate the effects of PWDI-driven irrigation under saline conditions. Results showed that higher PWDI thresholds led to increased irrigation depth but decreased irrigation frequency and total volume, resulting in a deteriorated soil water and salt environment, slower growth, and lower yield and net profit. Guidelines for smart irrigation scheduling were provided based on quantitative results, taking into account water management measures and cotton market prices. An optimal PWDI threshold of 0.49 was found to maximize economic benefits and water productivity. Lower thresholds should be considered when cotton prices are low, while higher thresholds can be used to improve water efficiency. Further research is needed to consider crop sensitivity to water and salinity stresses at different growth stages and optimize irrigation depth per event.
AGRICULTURAL WATER MANAGEMENT
(2023)
Article
Plant Sciences
Ran Erel, Uri Yermiyahu, Hagai Yasuor, Alon Ben-Gal, Isaac Zipori, Arnon Dag
Summary: Oil in fruits and seeds, especially olive oil, is an important source of calories and essential fatty acids. The study found that nitrogen fertilization level negatively affects the oil content in olive fruits.
FRONTIERS IN PLANT SCIENCE
(2023)
Article
Plant Sciences
Lichun Wang, Songrui Ning, Wengang Zheng, Jingyu Guo, Youli Li, Yinkun Li, Xiaoli Chen, Alon Ben-Gal, Xiaoming Wei
Summary: This study compared the performance of a soil-based system (SBS) and a hydroponic production system (HPS) in terms of lettuce productivity and economic benefit. The results showed that HPS was more adaptable to environmental temperature changes and had higher yield and water productivity compared to SBS. Additionally, HPS-grown lettuce exhibited increased levels of ascorbic acid and soluble sugar, but accumulation of nitrate. Consideration of agronomic, quality, and economic indicators revealed that the H2 treatment in HPS showed the optimal performance, indicating the profitability of HPS for commercial lettuce production.
FRONTIERS IN PLANT SCIENCE
(2023)
Article
Plant Sciences
Arnon Dag, Shamir Badichi, Alon Ben-Gal, Aviad Perry, Noemi Tel-Zur, Yonatan Ron, Zipora Tietel, Uri Yermiyahu
Summary: A 6-year study on jojoba plants showed that nitrogen application has a significant impact on plant nutrient status, growth, productivity, and nitrate accumulation in the soil. The recommended nitrogen dosage for intensive jojoba plantations is 150 kg N ha(-1).
Article
Engineering, Environmental
David Yalin, Hillary A. Craddock, Shmuel Assouline, Evyatar Ben Mordechay, Alon Ben-Gal, Nirit Bernstein, Rabia M. Chaudhry, Benny Chefetz, Despo Fatta-Kassinos, Bernd M. Gawlik, Kerry A. Hamilton, Leron Khalifa, Isaya Kisekka, Iftach Klapp, Hila Korach-Rechtman, Daniel Kurtzman, Guy J. Levy, Roberta Maffettone, Sixto Malato, Celia M. Manaia, Kyriakos Manoli, Orah F. Moshe, Andrew Rimelman, Luigi Rizzo, David L. Sedlak, Maya Shnit-Orland, Eliav Shtull-Trauring, Jorge Tarchitzky, Venus Welch-White, Clinton Williams, Jean Mclain, Eddie Cytryn
Summary: This article discusses the challenges and solutions related to the use of treated wastewater (TWW) for irrigation purposes in agriculture. The authors emphasize the importance of managing TWW properly to avoid negative impacts on soil functioning, plant productivity, and human and environmental health. They call for a global harmonized data system to centralize scientific findings and improve knowledge sharing among researchers and policymakers. The insights from this collaboration will help mitigate risks and ensure more sustainable use of TWW for food production in the future.
Article
Environmental Sciences
Guang Yang, Xuejin Qiao, Qiang Zuo, Jianchu Shi, Xun Wu, Lining Liu, Alon Ben-Gal
Summary: Accurate monitoring and evaluation of root-zone soil salt content (SSC) are crucial for sustainable development of irrigated agriculture in arid and semi-arid areas. This study developed an inversion method to estimate root-zone SSC based on soil-crop water relations and evapo-transpiration (ET) fused through remote sensing data. The method was applied to analyze the spatial and temporal distribution characteristics and cumulative effects of root-zone SSC in cotton fields under film mulched drip irrigation. The results showed a significant decline in root-zone SSC over the past 21 years, indicating the potential of the inversion method in effective planning and management of soil and water resources in arid salinized areas.
SCIENCE OF REMOTE SENSING
(2023)