Article
Plant Sciences
Aida Shomali, Sasan Aliniaeifard, Mohammad Mohammadian, Mahmoud Lotfi, Hazem M. Kalaji
Summary: High light intensity has a significant impact on the photosynthetic apparatus of tomatoes. Different genotypes show varying responses, with tolerant genotypes exhibiting reduced photoinhibitory quenching compared to sensitive genotypes. Quantum yield components also shift under high light, favoring the quantum yield of non-photochemical quenching and basal energy loss, while reducing the quantum yield of photosystem II. These findings provide insights into the mechanisms of high light tolerance in tomatoes and can aid in the development of resilient crops for variable light conditions.
PHYSIOLOGIA PLANTARUM
(2023)
Article
Plant Sciences
Chenqian Kang, Yuqi Zhang, Ruifeng Cheng, Elias Kaiser, Qichang Yang, Tao Li
Summary: It is crucial to raise young plants efficiently for modern greenhouse production. Exposing cucumber seedlings to blue supplemental light can enhance photosynthetic capacity, leaf morphology, and reduce photoinhibition under high solar light exposure, ultimately leading to improved plant growth. Blue-light acclimation improves light use efficiency and optimizes non-photochemical quenching (NPQ) performance, making it a beneficial strategy for greenhouse cultivation.
FRONTIERS IN PLANT SCIENCE
(2021)
Article
Plant Sciences
Sheng-Pu Shuang, Jin-Yan Zhang, Zhu Cun, Hong-Min Wu, Jie Hong, Jun-Wen Chen
Summary: This study compares the photoprotective mechanisms among different light-demanding plants under dynamic light. The results show that sun plants have higher non-photochemical quenching and cyclic electron flow for photoprotection, while shade plants are more sensitive to transient dynamic light.
FRONTIERS IN PLANT SCIENCE
(2022)
Article
Plant Sciences
Shun-Ling Tan, Jia-Lin Huang, Feng-Ping Zhang, Shi-Bao Zhang, Wei Huang
Summary: This study revealed that low-light phases significantly affect the extent of PSI photoinhibition in fluctuating light conditions, with a higher light intensity inducing a higher proton gradient across thylakoid membranes. The activation of cyclic electron flow (CEF) is finely regulated to optimize the balance between photoprotection and light use efficiency in fluctuating light environments. Additionally, CEF activation in high-light phases is highly dependent on the PSI reduction state.
ENVIRONMENTAL AND EXPERIMENTAL BOTANY
(2021)
Review
Plant Sciences
Marina Lopez-Pozo, William W. Adams III, Stephanie K. Polutchko, Barbara Demmig-Adams
Summary: The ability of plants to respond to environmental fluctuations is achieved through adaptive adjustments in plant form and function. While land plants require extensive acclimation to light and temperature variations, floating aquatic plants like duckweed are less dependent on acclimation and can thrive in different light conditions. This is due to their high growth rates, photosynthetic capacities, and ability to produce photoprotective compounds without compromising efficiency. This contrast highlights the importance of land plants experiencing light fluctuations before inducing acclimatory adjustments.
Review
Biochemistry & Molecular Biology
Yan Zhang, Jing Xu, Ruofan Li, Yanrui Ge, Yufei Li, Ruili Li
Summary: Abiotic stress refers to the adverse effect of non-biological factors on plants in a given environment, affecting their growth and development. These stress factors, such as drought, salinity, and extreme temperatures, are often interconnected. Plants have developed mechanisms to sense and adapt to these environmental challenges. This review summarizes recent studies on plant stress sensing and regulatory mechanisms, focusing on signal transduction and regulation at multiple levels. The strategies to improve plant growth under stress based on current progress are also discussed. Moreover, the implications of understanding plant responses to abiotic stresses for high-yielding crops and agricultural sustainability are explored. Studying stress signaling and regulation is crucial for comprehending plant responses to abiotic stress, developing stress-resistant crops, and promoting agricultural sustainability.
INTERNATIONAL JOURNAL OF MOLECULAR SCIENCES
(2023)
Article
Biotechnology & Applied Microbiology
Anne Pajot, Johann Lavaud, Gregory Carrier, Thomas Lacour, Luc Marchal, Elodie Nicolau
Summary: This study investigated the photoprotection mechanisms in two clonal strains of T. lutea with different basal pigment compositions. It was found that the two strains had different strategies for dissipating excess light energy and synthesizing photoprotective pigments. The expression of specific genes involved in the xanthophyll pigment cycles was also correlated with these diverging phenotypes.
ALGAL RESEARCH-BIOMASS BIOFUELS AND BIOPRODUCTS
(2023)
Article
Plant Sciences
Kevin M. Davies, Marco Landi, John W. van Klink, Kathy E. Schwinn, David A. Brummell, Nick W. Albert, David Chagne, Rubina Jibran, Samarth Kulshrestha, Yanfei Zhou, John L. Bowman
Summary: Land plants commonly produce red pigmentation in response to environmental stressors, with different types of pigments in different lineages. Some plants have lost the ability to produce anthocyanins and instead produce betalain pigments, while some terrestrial algae also produce red pigmentation under stress.
Article
Environmental Sciences
Mudalige Don Hiranya Jayasanka Senavirathna, Guligena Muhetaer, Hongyu Yan, Bahaguri Aihemaiti, Takeshi Fujino
Summary: Cyanobacterial growth is a significant problem worldwide, and this study investigates the stress and recovery responses of cyanobacteria to extreme light exposure. The findings indicate that cyanobacteria can overcome stress through adjustment and recovery under optimal conditions.
WATER AIR AND SOIL POLLUTION
(2021)
Article
Biochemistry & Molecular Biology
Anh Trung Nguyen, Lien Hong Tran, Sunyo Jung
Summary: Salt stress disrupts cellular ion homeostasis and adversely impacts plant growth and productivity. We examined the regulatory mechanisms of porphyrin biosynthesis, photoprotection, and antioxidant properties in salt-stressed rice seedlings. Our results indicate that chlorophyll and heme biosynthesis involve the protective strategies for salt stress alleviation through photoprotection by the scavenging of chlorophyll precursors and nonphotochemical quenching (NPQ) as well as activating antioxidant enzymes.
Article
Plant Sciences
Chongyang Li, Tianpeng Zhang, Pengwen Feng, Daxing Li, Marian Brestic, Yang Liu, Xinghong Yang
Summary: The study found that glycinebetaine can significantly increase the tolerance of transgenic tobacco plants to cadmium stress, promoting growth and photosynthesis, reducing oxidative stress, and decreasing cadmium accumulation.
ENVIRONMENTAL AND EXPERIMENTAL BOTANY
(2021)
Review
Biochemistry & Molecular Biology
Wei Xie, Qianqian Tang, Fei Yan, Zeng Tao
Summary: Plants respond to adverse temperatures by enhancing tolerance to recurring or different stresses through a transcriptional memory mechanism. Epigenetic modifications play a key role in the formation of this memory. Understanding these mechanisms not only helps us comprehend the balance between plant growth and defense but also provides a theoretical basis for breeding stress-tolerant crops for future climate change.
JOURNAL OF ZHEJIANG UNIVERSITY-SCIENCE B
(2021)
Review
Biochemistry & Molecular Biology
Yafei Shi, Xiangsheng Ke, Xiaoxia Yang, Yuhan Liu, Xin Hou
Summary: Plants require solar energy for growth through oxygenic photosynthesis, but excessive light intensity can cause stress and damage. This article reviews the physiological and biochemical responses of plants to high light stress and fluctuating light stress, as well as the mechanisms they employ to mitigate the detrimental effects.
JOURNAL OF GENETICS AND GENOMICS
(2022)
Article
Plant Sciences
Fatima Teran, Vicente Vives-Peris, Maria F. Lopez-Climent, Aurelio Gomez-Cadenas, Rosa M. Perez-Clemente
Summary: High temperatures and high light intensity occurring simultaneously under field conditions due to climate change have adverse effects on citrus crops, causing reductions in yield and fruit quality. This study evaluated the impact of these combined stress conditions on Carrizo citrange plants, and found that kaolin mitigated their deleterious effects by reducing leaf damage and abscission, improving physiological parameters, suppressing carotenoid degradation, and modulating hormone levels involved in plant stress responses.
JOURNAL OF PLANT GROWTH REGULATION
(2023)
Review
Plant Sciences
A. Raza, S. Charagh, S. Abbas, M. U. Hassan, F. Saeed, S. Haider, R. Sharif, A. Anand, F. J. Corpas, W. Jin, R. K. Varshney
Summary: Climate change and abiotic stress factors have a significant impact on crop losses, particularly extreme temperatures. Plants have developed strategies to cope with temperature stress, such as accumulating the amino acid proline which helps in stress tolerance and maintaining plant metabolism. Manipulating the biosynthesis of proline through genetic engineering can lead to the development of temperature-smart crops.
Article
Plant Sciences
Jorge Gonzalez-Villagra, Marjorie M. Reyes-Diaz, Ricardo Tighe-Neira, Claudio Inostroza-Blancheteau, Ana Luengo Escobar, Leon A. Bravo
Summary: The application of salicylic acid (SA) was found to enhance plant growth and improve photosynthetic performance and enzyme activity in A. chilensis plants subjected to moderate drought stress. SA also increased total phenolic content and antioxidant capacity in drought-stressed plants.
Article
Plant Sciences
Jose Ignacio Garcia-Plazaola, Miren Irati Arzac, Laura Brazales, Javier Fernandez, Jose Manuel Laza, Jose Luis Vilas, Marina Lopez-Pozo, Alicia Perera-Castro, Beatriz Fernandez-Marin
Summary: Macroalgal communities in the upper intertidal zone of Antarctica are poor compared to other coastal regions. However, the rhodophyte Pyropia endiviifolia is one of the few species able to colonize this environment successfully. It has better photosynthetic performance and higher tolerance to desiccation and freezing compared to the temperate Atlantic species Porphyra linearis. The study suggests that mechanisms for freezing tolerance may induce higher tolerance to desiccation.
EUROPEAN JOURNAL OF PHYCOLOGY
(2023)
Article
Biochemistry & Molecular Biology
Lina Mariana Tovar, Carlos Felipe Burgos, Gonzalo E. Yevenes, Gustavo Moraga-Cid, Jorge Fuentealba, Claudio Coddou, Luisa Bascunan-Godoy, Claudio Catrupay, Angel Torres, Patricio A. A. Castro
Summary: Neurulation is a crucial process in the formation of the central nervous system (CNS). Connexins (Cxs), which form gap junctions (GJs) and hemichannels (HCs), play a role in neural tube development. ATP release mediated by HCs-Cxs is important during the neurulation process. Blockade of HCs-Cxs can lead to neural tube defects (NTDs).
INTERNATIONAL JOURNAL OF MOLECULAR SCIENCES
(2023)
Review
Biology
Ane Legardon, Jose Ignacio Garcia-Plazaola
Summary: In the current era of climate change, plants face challenges of temperature fluctuations and increasing droughts. Gesneriads are a global plant family with many species that can survive long periods with little water and revive upon water availability. Their ability to withstand extreme cold and go through resurrection shares similar metabolic responses. Despite their potential in crop improvement, their difficult cultivation and accessibility hinder their study. This review aims to propose new tentative resurrection gesneriads by identifying common patterns among known resurrection species and gathering metabolic responses to desiccation and freezing stress.
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
Geography, Physical
Paulina Pradel, Leon A. Bravo, Carolina Merino, Nicole Trefault, Rodrigo Rodriguez, Heike Knicker, Claudia Jara, Giovanni Larama, Francisco Matus
Summary: The impacts of rapid warming on soil organic matter decomposition in King George Island, Maritime Antarctic, remain unclear. Most vegetation cover is dominated by mosses, which contribute carbohydrates and C-alkyl but lack lignin for aromatic compounds and humus formation. The response of Antarctic microbial respiration to substrate and temperature increase is not yet understood.
PERMAFROST AND PERIGLACIAL PROCESSES
(2023)
Article
Plant Sciences
C. Hernandez-Fuentes, J. Galmes, L. A. Bravo, L. A. Cavieres
Summary: The study analyzed the intrinsic traits of Phacelia secunda populations from different elevations in the Chilean Andes and their acclimation of photosynthesis to warmer temperatures. The results showed that plants from higher elevations had slightly lower CO2 assimilation rates but increased diffusive components of photosynthesis compared to plants from lower elevations. Moreover, plants from high elevations had lower photosynthetic acclimation to warmer temperatures, indicating higher susceptibility to global warming.
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
Dariel Lopez, Carolina Sanhueza, Haroldo Salvo-Garrido, Luisa Bascunan-Godoy, Leon A. Bravo
Summary: This study aimed to evaluate the effect of diurnal and nocturnal warming on the freezing resistance of Antarctic vascular plants. The results showed that nocturnal warming weakened the freezing resistance of Deschampsia antarctica and Colobanthus quitensis, leading to reduced expression of dehydrin-like peptides and decreased sucrose content in both species. Therefore, while both species still have some freezing resistance during summer freezing events, C. quitensis may reach its freezing vulnerability limits in the near future if warming in the Antarctic Peninsula continues.
Review
Plant Sciences
Humberto A. Gajardo, Olman Gomez-Espinoza, Pedro Boscariol Ferreira, Helaine Carrer, Leon A. Bravo
Summary: Worldwide food security is threatened by climate change, as major staple crops are not adapted to harsh climatic and soil conditions. Traditional breeding and molecular techniques have been used to maintain crop yield, but additional strategies are needed to meet future food demand. CRISPR/Cas technology and its variants have emerged as alternatives for genetically modifying crops to withstand abiotic stress. This review summarizes current advancements in CRISPR/Cas applications for addressing hostile soil conditions and explores the potential of extreme plants for developing new molecular mechanisms for stress tolerance in crops.
Article
Forestry
Luz Yeidy Garcia, Rafael Rubilar, Juan Carlos Valverde, Veronica Emhart, Luisa Bascunan, Alex Medina, Daniel Bozo
Summary: Water stress is a significant factor limiting the survival and productivity of Eucalyptus plantations. Our study analyzed the responses of ten Eucalyptus genotypes to different water regimes under nursery conditions. The results showed that water stress reduced growth and physiological activity in all genotypes, and intrinsic water use efficiency and predawn water potential were important variables in grouping the genotypes. Some genotypes were considered tolerant, while others were moderately tolerant or highly sensitive. The findings suggest that evaluating the physiological traits of genotypes in nurseries can help select suitable sites and reduce losses under drier climate conditions.
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)
Article
Microbiology
Genesis Parada-Pozo, Leon A. Bravo, Patricia L. Saez, Lohengrin A. Cavieres, Marjorie Reyes-Diaz, Sebastian Abades, Fernando D. Alfaro, Rodrigo De la Iglesia, Nicole Trefault
Summary: This study characterized the diversity and composition of microorganisms in the rhizosphere of Antarctic vascular plants and evaluated the effect of soil warming on microbial communities. The results showed that eukaryotic communities in the rhizosphere were more sensitive to warming compared to bacterial communities.
FEMS MICROBIOLOGY ECOLOGY
(2022)