Article
Environmental Sciences
Vanessa Russnak, Mauricio Rodriguez-Lanetty, Ulf Karsten
Summary: The study found significant differences in photosynthetic performance and tolerance among different genetic types of Symbiodiniaceae, but most exhibited broad thermal tolerance, enabling them to adapt to temperature fluctuations in tropical regions.
FRONTIERS IN MARINE SCIENCE
(2021)
Article
Plant Sciences
John L. Snider, Cristiane Pilon, Wei Hu, Hai-Miao Wang, Viktor Tishchenko, William Slaton, Daryl Chastain, Ved Parkash
Summary: Temperatures between 10 degrees C and 25 degrees C limit seedling growth and reversibly inhibit net assimilation (A(N)) in cold sensitive plants. Low temperature increases energy dissipation, carotenoid content, hydrogen peroxide production, and ascorbate peroxidase activity, while respiration (R-D) is the most cold-sensitive process.
ENVIRONMENTAL AND EXPERIMENTAL BOTANY
(2022)
Review
Plant Sciences
John N. Ferguson, Alison C. Tidy, Erik H. Murchie, Zoe A. Wilson
Summary: Heat stress affects crop productivity through impaired carbon metabolism and reproductive development. Understanding the integration of these processes and their contribution to yield maintenance is crucial for developing climate-resilient crops. Recent studies on source-sink dynamics, non-foliar photosynthesis, and net carbon gain provide key insights into improving reproductive development and crop productivity under heat stress.
PLANT CELL AND ENVIRONMENT
(2021)
Article
Forestry
Muhammad Ateeq, Aamir Hamid Khan, Dongmei Zhang, Shariq Mahmood Alam, Wanqi Shen, Minghua Wei, Jian Meng, Xingyi Shen, Jiajia Pan, Kaijie Zhu, Hanzi He, Guohuai Li, Junwei Liu
Summary: Waterlogging, caused by climate change impacts, is a significant abiotic stress for plants. Peach trees are highly sensitive to hypoxia during waterlogging, leading to poor growth and economic losses. The molecular mechanism underlying the response of peach to waterlogging and reoxygenation is still unclear. In this study, the physiological and molecular responses of 3-week-old peach seedlings to waterlogging and recovery conditions were comprehensively analyzed. The results suggest that glutathione, primary sugars, and hormone biosynthesis and signaling may play crucial roles in the plant's response to waterlogging. This work provides valuable insights into the gene regulatory networks and metabolites involved in waterlogging stress and recovery, which can aid in the control of waterlogging in peach cultivation.
Article
Plant Sciences
Xinpeng Zhou, Zhanming Tan, Yaguang Zhou, Shirong Guo, Ting Sang, Yu Wang, Sheng Shu
Summary: Exogenous GR24 was found to improve the growth, photosynthetic efficiency, and antioxidant capacity of cucumber seedlings under low light stress.
Article
Biochemistry & Molecular Biology
Harsha Gautam, Mehar Fatma, Zebus Sehar, Noushina Iqbal, Mohammed Albaqami, Nafees A. Khan
Summary: The effect of exogenously-applied ethylene on photosynthesis, carbohydrate metabolism, and high-temperature stress tolerance in rice was studied. The application of ethephon reduced the adverse effects of heat stress on carbohydrate metabolism and photosynthesis by enhancing the antioxidant enzymatic system. Ethephon also up-regulated genes related to photosynthesis, leading to improved photosynthesis. Overall, ethylene regulates photosynthesis via carbohydrate metabolism and the antioxidant system, influencing high-temperature stress tolerance in rice.
INTERNATIONAL JOURNAL OF MOLECULAR SCIENCES
(2022)
Article
Horticulture
Yaguang Zhou, Ting Sang, Mimi Tian, Mohammad Shah Jahan, Jian Wang, Xiangyu Li, Shirong Guo, Hongyun Liu, Yu Wang, Sheng Shu
Summary: This study investigated the effects of Bacillus cereus on growth, photosynthesis, and antioxidant metabolism in salt-stressed cucumber seedlings. The results showed that B. cereus enhanced salt tolerance by regulating antioxidant metabolism, thus alleviating the inhibitory effects of salt stress on growth and photosynthesis.
Article
Biodiversity Conservation
Andres N. Molina, Jose M. Pulgar, Enrico L. Rezende, Mauricio J. Carter
Summary: Global warming has complex effects on the Antarctic continent, with Antarctic organisms exhibiting varying degrees of sensitivity to increasing temperatures.
GLOBAL CHANGE BIOLOGY
(2023)
Article
Plant Sciences
Xin He, Jinghong Hao, Shuangxi Fan, Chaojie Liu, Yingyan Han
Summary: High temperature poses a significant threat to lettuce production. Spermidine (Spd) has been found to improve heat tolerance in lettuce, but the mechanism behind this and the role of polyamine metabolism remained unclear. In this study, the effects of Spd and D-arginine (D-arg) on hydroponic lettuce seedlings under high-temperature stress were investigated. The results showed that Spd promoted growth and photosynthesis in lettuce seedlings, while D-arg had a negative effect. Additionally, the increase in polyamine content in lettuce may be attributed to changes in the expression levels of genes related to polyamine synthesis and metabolism enzymes.
Article
Environmental Sciences
Robin J. Fales, Brooke L. Weigel, Emily Carrington, Helen D. Berry, Megan N. Dethier
Summary: Kelp forest declines are linked to global warming, and nitrogen availability can alter the physiological responses of kelps to temperature stress. The canopy-forming bull kelp is going extinct in warm and nutrient poor areas, while the understory kelp persists. Both kelp species showed signs of metabolic stress and reduced growth in response to elevated temperatures. The populations of N. luetkeana from warm, nutrient poor and cool, nutrient rich areas were equally susceptible to the effects of ocean warming.
FRONTIERS IN MARINE SCIENCE
(2023)
Article
Biochemistry & Molecular Biology
Xixi Dong, Zujing Yang, Zhi Liu, Xuefeng Wang, Haitao Yu, Cheng Peng, Xiujiang Hou, Wei Lu, Qiang Xing, Jingjie Hu, Xiaoting Huang, Zhenmin Bao
Summary: Heat stress has significant effects on the metabolism of Zhikong scallop, causing alterations in energy metabolism and antioxidant capacity. The findings suggest that the scallops have the potential to adapt to heat stress by regulating these metabolic processes.
Article
Environmental Sciences
Mengxue Lyu, Jingquan Liu, Xinxiang Xu, Chunling Liu, Hanhan Qin, Xuelin Zhang, Ge Tian, Han Jiang, Yuanmao Jiang, Zhanling Zhu, Shunfeng Ge
Summary: Previous studies have shown that magnesium can prevent plants from suffering from abiotic stress. In this study, we investigated the effect of magnesium on apple seedlings under aluminum toxicity. The results showed that magnesium reduced aluminum accumulation, enhanced antioxidant capacity, and improved photosynthesis and carbon-nitrogen metabolism, alleviating aluminum-induced growth inhibition in apple seedlings.
ECOTOXICOLOGY AND ENVIRONMENTAL SAFETY
(2023)
Review
Food Science & Technology
Lijuan Zhao, Tonghao Bai, Hui Wei, Jorge L. Gardea-Torresdey, Arturo Keller, Jason C. White
Summary: This review examines the use of ROS-scavenging and ROS-triggering nanomaterials to enhance stress resistance in plants. It discusses the delivery pathways of these nanomaterials and highlights the potential of nanobiotechnology in engineering crops with improved stress tolerance.
Article
Plant Sciences
Mohammad Bahmani Jafarlou, Babak Pilehvar, Mohammad Modaresi, Mehdi Mohammadi
Summary: Saltwater is considered a major environmental stressor that negatively affects the growth and establishment of trees and shrubs worldwide. This study found that utilizing seaweed extract may be an effective alternative strategy to improve crop tolerance to salinity. The results indicated that seedlings treated with seaweed extract could tolerate high salinity levels and showed significant improvements in growth and physiochemical aspects.
JOURNAL OF PLANT GROWTH REGULATION
(2023)
Article
Multidisciplinary Sciences
Maryam Seifikalhor, Vahid Niknam, Sasan Aliniaeifard, Fardad Didaran, Georgios Tsaniklidis, Dimitrios Fanourakis, Mahsa Teymoorzadeh, Seyed Hasan Mousavi, Massimo Bosacchi, Tao Li
Summary: Exogenous application of GABA can alleviate the negative effects of drought on plants, especially for drought-tolerant chickpea cultivars. GABA application increases the content of proline and GABA, aiding in better mitigation of drought damage.
SCIENTIFIC REPORTS
(2022)
Article
Ecology
Liesbeth van den Brink, Rafaella Canessa, Harald Neidhardt, Timo Knuever, Rodrigo S. Rios, Alfredo Saldana, Lohengrin A. Cavieres, Yvonne Oelmann, Maaike Y. Bader, Katja Tielboerger
Summary: Litter decomposition rates are influenced by climate, decomposer organisms, and litter quality. The hypothesis of a home-field advantage, where decomposer communities are locally adapted to accelerate decomposition of local litter, remains controversial and lacks support across different climates. The decomposition process is primarily influenced by litter quality and the overall ability of decomposer communities, rather than the origin or location of the litter.
FUNCTIONAL ECOLOGY
(2023)
Article
Plant Sciences
Jose Ortiz, Carolina Hernandez-Fuentes, Patricia L. Saez, Nestor Fernandez Del Saz, Lohengrin A. Cavieres
Summary: There are two main types of leaves in vascular plant species: compound and simple. Compound leaves have higher productivity due to their larger projected area, while simple leaves have higher stress tolerance during drought due to their ability to pack more mass tissue in a smaller projected area. However, compound leaves have more efficient convective cooling, which helps alleviate water loss in drought periods. In Central Chile, both simple and compound leaf species coexist, but the impact of severe droughts on their photosynthetic traits has not been studied. This study found that compound leaf species had higher net photosynthesis (A(N)) and mesophyll conductance (g(m)) under well-watered conditions. However, both leaf types were negatively affected by drought, despite compound leaves having lower foliar temperature. This suggests that the matorral species in Central Chile will be severely impacted in terms of A(N) by the ongoing megadrought in the region.
Correction
Plant Sciences
Jose Ortiz, Carolina Hernandez-Fuentes, Patricia L. Saez, Nestor Fernandez Del Saz, Lohengrin A. Cavieres
Review
Plant Sciences
Bruno E. Rojas, Tomas Tonetti, Carlos M. Figueroa
Summary: Trehalose 6-phosphate (Tre6P) is an intermediate of trehalose biosynthesis and plays a crucial role in linking growth and development to carbon status in plants. Most of our understanding of Tre6P metabolism and signaling pathways comes from studies on Arabidopsis thaliana, a model plant for C3 photosynthesis. However, limited research has been conducted on the molecular mechanisms of Tre6P regulation in C4 plants, which are economically important crops like maize, sorghum, and sugarcane. This review focuses on recent advancements in Tre6P metabolism in C4 species and raises important questions that need to be addressed to improve the yield of economically important crops.
CURRENT OPINION IN PLANT BIOLOGY
(2023)
Article
Ecology
Miquel Nadal, Maria J. Clemente-Moreno, Alicia V. V. Perera-Castro, Margalida Roig-Oliver, Yusuke Onoda, Javier Gulias, Jaume Flexas
Summary: In recent years, researchers have been attempting to establish the connections between pressure-volume parameters and the leaf economics spectrum in order to gain a deeper understanding of the relationships among leaf traits. Through both theoretical and empirical evidence, we demonstrated the coordination between turgor loss point and associated traits with net CO2 assimilation and leaf mass per area. By considering the components of leaf mass per area and leaf saturated water content in ecophysiological studies, we can gain a broader perspective on leaf structure and function.
Article
Plant Sciences
Jorge Gago, Miquel Nadal, Maria Jose Clemente-Moreno, Carlos Maria Figueroa, David Barbosa Medeiros, Neus Cubo-Ribas, Lohengrin Alexis Cavieres, Javier Gulias, Alisdair Robert Fernie, Jaume Flexas, Leon Aloys Bravo
Summary: Deschampsia antarctica is a native vascular plant in Antarctica, and the availability of nutrients in the soil affects its photosynthetic and stress tolerance mechanisms. Plants growing on low-nutrient availability soils have more limiting photosynthetic and stress tolerance performances, while plants in nutrient-rich soils show vigorous growth without appreciable levels of stress.
JOURNAL OF EXPERIMENTAL BOTANY
(2023)
Article
Plant Sciences
Leonardo Cifuentes, Maximo Gonzalez, Katherine Pinto-Irish, Rodrigo Alvarez, Teodoro Coba de la Pena, Enrique Ostria-Gallardo, Nicolas Franck, Susana Fischer, Gabriel Barros, Catalina Castro, Jose Ortiz, Carolina Sanhueza, Nestor Fernandez Del-Saz, Luisa Bascunan-Godoy, Patricio A. Castro
Summary: Seed priming can enhance the ability of seedlings to cope with stress by altering metabolic responses, and it is particularly beneficial for salt-tolerant plants to improve their adaptability to saline conditions.
FRONTIERS IN PLANT SCIENCE
(2023)
Article
Plant Sciences
Maria Paz Jerez, Jose Ortiz, Catalina Castro, Elizabeth Escobar, Carolina Sanhueza, Nestor Fernandez Del-Saz, Miquel Ribas-Carbo, Teodoro Coba de la Pena, Enrique Ostria-Gallardo, Susana Fischer, Patricio Alejandro Castro, Luisa Bascunan-Godoy
Summary: Chenopodium quinoa ecotypes from Altiplano and the south of Chile exhibit different physiological and biochemical responses to nitrate and ammonium, impacting their growth and productivity.
FRONTIERS IN PLANT SCIENCE
(2023)
Article
Plant Sciences
Luis G. Quintanilla, Ismael Aranda, Maria Jose Clemente-Moreno, Joan Pons-Perpinya, Jorge Gago
Summary: By comparing the leaf functional traits of Oeosporangium tinaei (HHPP) and its diploid parents, it was found that HH has higher investment per unit area of light-capturing surface, lower carbon assimilation rate per unit mass for the same midday water potential, higher non-enzymatic antioxidant capacity, higher carbon content, and lower contents of nitrogen, phosphorus, and other macronutrients compared to PP. These traits allow HH to live in microhabitats with less availability of water and nutrients and have a greater capacity for resurrection. PP, on the other hand, has higher assimilation capacity and lower antioxidant capacity, explaining its preference for more humid and nutrient-rich microhabitats. HHPP traits are mostly intermediate between HH and PP, allowing the allotetraploid to occupy the free niche space left by the diploids.
Article
Biodiversity Conservation
Rafael A. Garcia, Eduardo Fuentes-Lillo, Lohengrin Cavieres, Ana J. Cobar-Carranza, Kimberley T. Davis, Matias Naour, Martin A. Nunez, Bruce D. Maxwell, Jonas J. Lembrechts, Anibal Pauchard
Summary: Pinus contorta is an invasive tree species with significant impacts on biodiversity and ecosystems. It has invaded Araucaria araucana forest and Patagonian steppe ecosystems in southern Chile, leading to changes in microenvironmental conditions and reduced native plant diversity.
Article
Biochemistry & Molecular Biology
Dariel Lopez, Giovanni Larama, Patricia L. Saez, Leon A. Bravo
Summary: Warming in the Antarctic Peninsula is rapidly increasing and expected to become more imbalanced. It has already affected the growth and reproduction of Antarctic plants, leading to decreased freezing tolerance. Limited evidence exists about the effects of diurnal and nocturnal warming on freezing tolerance-related gene expression in D. antarctica.
INTERNATIONAL JOURNAL OF MOLECULAR SCIENCES
(2023)