Article
Plant Sciences
Ronald J. Myers, Yosef Fichman, Gary Stacey, Ron Mittler
Summary: This study shows that extracellular ATP released from cells during plant wounding triggers systemic reactive oxygen species signaling and transcriptomic responses, and this process is regulated by the purinoreceptor 2 kinase (P2K) receptor.
Review
Biochemistry & Molecular Biology
Stefania Fortunato, Cecilia Lasorella, Nunzio Dipierro, Federico Vita, Maria Concetta de Pinto
Summary: The increase in environmental temperature due to global warming has a critical impact on plant growth and productivity. Heat stress can cause damage to biochemical and physiological processes, but plants have defense mechanisms, such as the heat stress response (HSR), which involves a complex network of heat shock factors (HSFs) and heat shock proteins (HSPs). Reactive oxygen species (ROS) can act as signal molecules in HSR, depending on the balance between their production and scavenging. Antioxidants play a critical role in maintaining an optimal redox environment, but the HS-dependent ROS burst triggers redox-dependent signaling cascades in the cell.
Article
Biochemistry & Molecular Biology
Magdalena Szechynska-Hebda, Maria Lewandowska, Damian Witon, Yosef Fichman, Ron Mittler, Stanislaw M. Karpinski
Summary: A new type of plant-to-plant direct communication involving electrical signaling, reactive oxygen species, and photosystem networks is revealed, showing long-distance signal transmission and adaptation in a plant community.
Review
Plant Sciences
Hana Daryanavard, Anthony E. Postiglione, Joelle K. Muhlemann, Gloria K. Muday
Summary: This review summarizes the important functions of flavonols in plant growth and development. Mutants with reduced flavonol levels, especially the transparent testa mutants in Arabidopsis thaliana, have contributed to our understanding of flavonol biosynthesis. These mutants have also revealed the roles of flavonols in controlling development in different tissues and cell types, including root architecture, guard cell signaling, and pollen development. Recent progress has highlighted that flavonols function as reactive oxygen species (ROS) scavengers and inhibitors of auxin transport, modulating plant growth, development, and responses to abiotic stresses.
CURRENT OPINION IN PLANT BIOLOGY
(2023)
Review
Plant Sciences
Ambra S. Parmagnani, Massimo E. Maffei
Summary: This review summarizes recent advances in Ca2+ signaling upon herbivory and reviews the most recent Ca2+ imaging techniques and methods.
Article
Chemistry, Multidisciplinary
Zhijiang Guo, Qiong Chen, Taibo Liang, Baoyuan Zhou, Suhua Huang, Xiufeng Cao, Xiuli Wang, Zaisong Ding, Jiangping Tu
Summary: The ROS wave plays a crucial role in plant responses to environmental stimuli. By manipulating ROS signaling, plant immunity and stress acclimation can be improved, leading to increased crop yields through modulation of the balance between growth and defense.
Article
Plant Sciences
Yosef Fichman, Haiyan Xiong, Soham Sengupta, Johanna Morrow, Hailey Loog, Rajeev K. Azad, Julian M. Hibberd, Emmanuel Liscum, Ron Mittler
Summary: Reactive oxygen species (ROS) and the photoreceptor protein phytochrome B (phyB) play a key role in plant acclimation to stress. This study reveals that phyB and respiratory burst oxidase homolog proteins (RBOHs) act as part of a regulatory module that controls ROS production, stress-response gene expression, and plant acclimation to excess light stress. The findings also demonstrate that phyB can regulate ROS production even if it is restricted to the cytosol and that phyB and RBOHD/RBOHF co-regulate the expression of thousands of genes in response to light stress. Additionally, phyB is found to be necessary for ROS accumulation during heat, wounding, cold, and bacterial infection.
Review
Biochemistry & Molecular Biology
Colin P. S. Kruse, Sarah E. Wyatt
Summary: This article reviews the response of plants to gravity, focusing on the differential protein and gene regulation induced by the absence of gravity stimulus aboard the International Space Station. It proposes an integrated theoretical schematic of gravity response, with nitric oxide and cysteine S-nitrosation playing a central role. The proposed model is supported by the evolutionary conservation of regulatory amino acids within protein components and may have implications for studying various environmental and stress responses.
Article
Plant Sciences
Ronald J. Myers, Yosef Fichman, Sara Zandalinas, Ron Mittler
Summary: There is an antagonistic interaction between salicylic acid and jasmonic acid that attenuates the accumulation of reactive oxygen species in local and systemic tissues during plant responses to light stress or wounding. This interaction plays a crucial role in systemic signaling and acclimation to stress in plants.
Review
Biochemistry & Molecular Biology
Maria Angeles Pelaez-Vico, Yosef Fichman, Sara Zandalinas, Frank Van Breusegem, Ron Mittler, Stanislaw M. Karpinski
Summary: Stress leads to increased accumulation of reactive oxygen species (ROS) in plants, altering cell redox state and activating defense mechanisms. Stress sensing in plants triggers systemic signals that travel to different parts of the plant and activate acclimation and defense mechanisms.
FREE RADICAL BIOLOGY AND MEDICINE
(2022)
Article
Biochemistry & Molecular Biology
Thomas Roach, Gilbert Neuner, Ilse Kranner, Othmar Buchner
Summary: Heat and drought stresses are important topics in the context of climate change, especially in the Alps. A study found that alpine plants can gradually adapt to heat and achieve maximum tolerance within a week. The antioxidant mechanisms of Primula minima leaves that were heat hardened without or with additional drought stress were investigated. The results showed a weakened low-molecular-weight antioxidant defense but increased activity of antioxidant enzymes, particularly under drought conditions.
Letter
Plant Sciences
Yosef Fichman, Ron Mittler
Summary: The wounding-induced reactive oxygen species (ROS) wave triggers a systemic redox response throughout the whole plant in Arabidopsis.
Article
Agronomy
Xiaoguang Lu, Yuhan Wu, Chaoyue Tang, Chang Liu, Ninghui Li, Yuchen Du, Lianshuang Fu, Xin Liu, Jun Liu, Xiaonan Wang
Summary: Recent findings suggest that cold acclimation can enhance cold resistance in wheat. This study elucidated the potential mechanisms of cold acclimation in the winter wheat variety DM1 and the variety CS, focusing on the role of the antioxidant system. The results showed that DM1 exhibited a higher cold tolerance than CS by increasing the expression of POD genes, LEA, CAP, and cold-responsive proteins.
Review
Biodiversity Conservation
Jose Lopez, Danielle A. Way, Walid Sadok
Summary: The Earth is currently experiencing a global increase in atmospheric vapor pressure deficit, which is expected to continue due to climate warming. This increase has been linked to decreases in ecosystem productivity and crop yield, attributed to photosynthetic limitations from reduced stomatal conductance. The long-term increase in vapor pressure deficit suggests that stomatal acclimation may play an important role in determining plant productivity under high vapor pressure deficit. The effects of elevated vapor pressure deficit on plant physiology are complex and far-reaching, involving anatomical, biochemical, and developmental aspects that vary across species.
GLOBAL CHANGE BIOLOGY
(2021)
Article
Plant Sciences
Chan Liu, Weibiao Liao
Summary: Potassium ion is an essential signaling molecule in plant growth and development. It interacts with calcium, reactive oxygen species, and reactive nitrogen species to regulate plant growth, development, and abiotic stress responses.
PLANT PHYSIOLOGY AND BIOCHEMISTRY
(2022)
Article
Plant Sciences
Damian Balfagon, Sara Zandalinas, Tadeu dos Reis de Oliveira, Claudete Santa-Catarina, Aurelio Gomez-Cadenas
Summary: Drought, heat, and high irradiance are abiotic stresses that negatively impact plant development and photosynthesis. Our study on citrus plants revealed that adjusting stomatal aperture and transpiration rate can alleviate heat stress and increase tolerance to combinations of drought, high irradiance, and high temperatures.
PHYSIOLOGIA PLANTARUM
(2022)
Article
Plant Sciences
Ronald J. Myers, Yosef Fichman, Sara Zandalinas, Ron Mittler
Summary: There is an antagonistic interaction between salicylic acid and jasmonic acid that attenuates the accumulation of reactive oxygen species in local and systemic tissues during plant responses to light stress or wounding. This interaction plays a crucial role in systemic signaling and acclimation to stress in plants.
Article
Plant Sciences
Yosef Fichman, Haiyan Xiong, Soham Sengupta, Johanna Morrow, Hailey Loog, Rajeev K. Azad, Julian M. Hibberd, Emmanuel Liscum, Ron Mittler
Summary: Reactive oxygen species (ROS) and the photoreceptor protein phytochrome B (phyB) play a key role in plant acclimation to stress. This study reveals that phyB and respiratory burst oxidase homolog proteins (RBOHs) act as part of a regulatory module that controls ROS production, stress-response gene expression, and plant acclimation to excess light stress. The findings also demonstrate that phyB can regulate ROS production even if it is restricted to the cytosol and that phyB and RBOHD/RBOHF co-regulate the expression of thousands of genes in response to light stress. Additionally, phyB is found to be necessary for ROS accumulation during heat, wounding, cold, and bacterial infection.
Article
Plant Sciences
Ranjita Sinha, Sai Preethi Induri, Maria Angeles Pelaez-Vico, Adama Tukuli, Benjamin Shostak, Sara I. I. Zandalinas, Trupti Joshi, Felix B. B. Fritschi, Ron Mittler
Summary: Global warming and climate change are causing more frequent and intense extreme climate events, leading to significant damage to agricultural production. Recent studies have shown that the transcriptional responses of different crops to water deficit or heat stress are different from their responses to a combination of water deficit and heat stress. Furthermore, the reproductive growth phase of crops is more vulnerable to these stresses compared to the vegetative growth phase. Therefore, we conducted a transcriptomic analysis of soybean tissues under water deficit, heat stress, and a combination of both.
Article
Plant Sciences
Ranjita Sinha, Benjamin Shostak, Sai Preethi Induri, Sidharth Sen, Sara Zandalinas, Trupti Joshi, Felix B. Fritschi, Ron Mittler
Summary: Climate change causes more frequent and intense droughts, heat waves, and their combinations, which reduces agricultural productivity and destabilizes societies worldwide. A study on soybean plants found that under water deficit and heat stress, the stomata on leaves close while those on flowers and developing pods remain open, resulting in differential transpiration. This differential transpiration strategy helps to cool the flowers and developing pods and protect seed production from heat-induced damage.
Article
Plant Sciences
Lidia S. Pascual, Maria F. Lopez-Climent, Clara Segarra-Medina, Aurelio Gomez-Cadenas, Sara I. Zandalinas
Summary: Plants exposed to combined soil constraints of salinity and herbicides face decreased photosynthesis, growth, and development. This study demonstrates that exogenous spermine (Spm) application improves tomato plants' tolerance to this stress combination by reducing leaf damage, enhancing growth, photosynthesis, and mitigating oxidative damage. These findings highlight the key role of Spm in enhancing plant tolerance to combined stress.
FRONTIERS IN PLANT SCIENCE
(2023)
Editorial Material
Plant Sciences
Amith R. Devireddy, Rosa M. Rivero, Sara I. Zandalinas
FRONTIERS IN PLANT SCIENCE
(2023)
Article
Plant Sciences
Damian Balfagon, Sara Zandalinas, Tadeu dos Reis de Oliveira, Claudete Santa-Catarina, Aurelio Gomez-Cadenas
Summary: Environmental changes from global warming and human activities intensify and increase the frequency of stressful conditions for plants. Multiple abiotic factors acting together amplify stress pressure and greatly reduce plant growth, yield, and survival. Stress combinations induce specific plant responses different from the sum of responses to individual stresses.
HORTICULTURE RESEARCH
(2023)
Article
Plant Sciences
Clara Segarra-Medina, Lidia S. Pascual, Saleh Alseekh, Alisdair R. Fernie, Jose L. Rambla, Aurelio Gomez-Cadenas, Sara I. Zandalinas
Summary: This study investigates the metabolic response of Arabidopsis ecotypes to the combination of high salinity and increased irradiance. The findings show that this stress combination results in a specific metabolic response, different from that of individual stresses. Different mechanisms are observed in the two ecotypes to tolerate the stress combination, including the relocation of amino acids and sugars as osmoprotectants, and the accumulation of stress-protective compounds.
Article
Plant Sciences
Lidia S. Pascual, Ron Mittler, Ranjita Sinha, Maria Angeles Pelaez-Vico, Maria F. Lopez-Climent, Vicente Vives-Peris, Aurelio Gomez-Cadenas, Sara I. Zandalinas
Summary: Due to global warming and climate change, the increase in weather events and pollutants has led to a more complex environment for plants. This study demonstrates the negative impact of a combination of six abiotic stressors on tomato plants, including growth inhibition, impairment of photosynthesis, and proline accumulation. The research also highlights the role of hormonal levels and stomatal responses in stress combination dependence, as well as the importance of jasmonic acid in tomato acclimation to multiple stress factors.
ENVIRONMENTAL AND EXPERIMENTAL BOTANY
(2023)
Article
Plant Sciences
Clara Segarra-Medina, Saleh Alseekh, Alisdair R. Fernie, Jose L. Rambla, Rosa M. Perez-Clemente, Aurelio Gomez-Cadenas, Sara Zandalinas
Summary: Plants respond to the combination of salt stress and high light through metabolic changes and hormone regulation. ABA plays a crucial role in promoting plant tolerance to this combination, while JA and SA have a marginal role. Moreover, the metabolic response of plants to the combination stress differs from that of salt stress or high light alone.
PLANT PHYSIOLOGY AND BIOCHEMISTRY
(2023)
Review
Plant Sciences
Sara I. Zandalinas, Maria Angeles Pelaez-Vico, Ranjita Sinha, Lidia S. Pascual, Ron Mittler
Summary: With the increasing complexity of environmental conditions, including global warming, climate change, and pollution, it is crucial to study the effects of multiple stress conditions on plants. These multifactorial stress combinations (MFSC) can lead to significant declines in plant growth, biomass, physiological parameters, and yield traits, affecting agriculture and ecosystems worldwide. Addressing MFSC and developing resilient crops are high priorities to adapt to our changing climate and environment.