Review
Plant Sciences
Sara Zandalinas, Felix B. Fritschi, Ron Mittler
Summary: Studies have shown that an increase in different co-occurring multifactorial stress factors can result in a severe decline in plant growth and survival, as well as a decrease in microbiome biodiversity. This should serve as a warning for society to take action to reduce pollutants, combat global warming, and increase crop tolerance to multifactorial stress combinations.
TRENDS IN PLANT SCIENCE
(2021)
Article
Plant Sciences
Avantika Bhaskar, Laju K. Paul, Eshan Sharma, Sampoornananda Jha, Mukesh Jain, Jitendra P. Khurana
Summary: The study characterized OsRR6, a type-A response regulator in rice, which plays a crucial role in plant response to abiotic stress, promoting tolerance to drought and salinity. OsRR6 expression is regulated by exogenous cytokinin and various abiotic stress treatments, affecting root growth, anthocyanin accumulation and cytokinin sensitivity in plants. OsRR6(OX) plants showed upregulated defense response and anthocyanin metabolism genes, indicating a positive role of OsRR6 in imparting abiotic stress tolerance.
PLANT PHYSIOLOGY AND BIOCHEMISTRY
(2021)
Article
Chemistry, Multidisciplinary
Heng Zhou, Honghong Wu, Feng Zhang, Ye Su, Wenxue Guan, Yanjie Xie, Juan Pablo Giraldo, Wenbiao Shen
Summary: The study demonstrates that biocompatible poly(acrylic acid) coated cerium oxide nanoparticles enhance rice tolerance and yield under salinity stress by regulating nitric oxide production, reducing reactive oxygen species accumulation, and maintaining ion homeostasis. PNC-mediated control of salt tolerance through NO signaling shows promising potential for improving crop performance in salt-stressed fields without increasing cerium content in cereal grains.
ENVIRONMENTAL SCIENCE-NANO
(2021)
Article
Plant Sciences
Haowen Luo, Weishen Huang, Pipeng Xing, Yulin Chen, Rifang Lai, Xiangru Tang
Summary: This study investigated the effects of different soil Ni contents on the performances of fragrant rice seedlings through a pot experiment. The results showed that high concentrations of Ni significantly reduced the growth and chlorophyll content of seedlings, while increasing oxidative stress and accumulation of antioxidant substances. These findings provide important guidance for the remediation of Ni-contaminated soils and reducing the effects of Ni on rice production.
JOURNAL OF PLANT GROWTH REGULATION
(2023)
Article
Biochemistry & Molecular Biology
Fatemeh Habibpourmehraban, Farhad Masoomi-Aladizgeh, Paul A. Haynes
Summary: This study investigated the changes in the transcriptome of the IAC1131 rice genotype in response to multiple abiotic stresses, with or without pre-treatment with ABA. The results showed that ABA treatment enhanced the changes in the transcriptome, and ABA application could help plants survive under unfavorable conditions by regulating photosynthesis functions.
Review
Plant Sciences
Md. Tahjib-Ul-Arif, Xiangying Wei, Israt Jahan, Md. Hasanuzzaman, Zahid Hasan Sabuj, Faisal Zulfiqar, Jianjun Chen, Rashid Iqbal, Khondoker M. G. Dastogeer, Abdullah Al Mamun Sohag, Sadia Haque Tonny, Imran Hamid, Ibrahim Al-Ashkar, Mohsen Mirzapour, Ayman El Sabagh, Yoshiyuki Murata
Summary: Exogenous nitric oxide (NO) application can significantly improve plant growth and yield, especially in terms of salt tolerance. Seed priming and foliar pre-treatment are the most effective methods for NO application, and one-time and regular interval treatments are more beneficial for plant growth. The optimum concentration ranges from 0.1 to 0.2 mM, and it alleviates salt stress up to 150 mM NaCl. Furthermore, the longer the duration of salt stress, the more pronounced the beneficial effects of exogenous NO treatment.
FRONTIERS IN PLANT SCIENCE
(2022)
Article
Engineering, Environmental
Yue You, Lijuan Liu, Yu Wang, Jiaxin Li, Zhining Ying, Zhilin Hou, Huijun Liu, Shaoting Du
Summary: The study found that while graphene oxide (GO) reduced the accumulation of Cd in rice seedlings, it had adverse effects on plant growth under co-contamination conditions with Cd. Therefore, the impacts of GO on crop production, both positive and negative, should be a concern.
JOURNAL OF HAZARDOUS MATERIALS
(2021)
Article
Environmental Sciences
Minyi Huang, Nguyen Thi Hong Nhung, Yongxiang Wu, Chunlin He, Kaituo Wang, Shangdong Yang, Hiromi Kurokawa, Hirofumi Matsui, Gjergj Dodbiba, Toyohisa Fujita
Summary: This study investigated the effects of different nanobubbles on the growth and Cd accumulation of rice seedlings under hydroponic conditions. The results showed that Cd alone decreased the biomass, photosynthetic pigment content, and antioxidant enzyme activity of rice seedlings, while inducing lipid peroxidation. However, when different types of nanobubbles were introduced into the nutrient solution, the bioavailability of Cd in the solution was reduced, resulting in significantly decreased Cd content in rice. Nanobubbles increased the biomass of rice, enhanced photosynthesis, and improved the antioxidant capacity of rice by increasing antioxidant enzyme activities to alleviate Cd-induced oxidative stress. Moreover, nanobubbles increased the Fe content in rice, which decreased the Cd content, as Cd is antagonistic to Fe. Overall, these findings suggest that nanobubbles have the potential to mitigate Cd stress, improve rice yield, and should be further explored in production.
Article
Cell Biology
Anna Rusaczonek, Weronika Czarnocka, Patrick Willems, Marzena Sujkowska-Rybkowska, Frank Van Breusegem, Stanislaw Karpinski
Summary: Phototropins PHOT1 and PHOT2 play significant roles in regulating photosynthesis, oxidative stress responses, and cell death processes, contributing to the optimization of water-use efficiency and maintenance of optimal intensity of photochemical reactions.
Article
Biochemistry & Molecular Biology
Douglas Jardim-Messeder, Andreia Caverzan, Natalia Balbinott, Paloma K. Menguer, Ana L. S. Paiva, Moaciria Lemos, Juliana R. Cunha, Marcos L. Gaeta, Miguel Costa, Marcel Zamocky, Nelson J. M. Saibo, Joaquim A. G. Silveira, Rogerio Margis, Marcia Margis-Pinheiro
Summary: This study found that silencing the OsAPX7 gene in rice does not affect plant growth, redox state, or photosynthesis parameters. However, silenced plants (APX7i) show higher tolerance to drought stress, with a higher ability to maintain stomata aperture and photosynthesis performance compared to non-transformed plants. RNA-seq analyses indicate that the silencing of OsAPX7 does not alter the global expression of genes related to reactive oxygen species metabolism. Additionally, the drought-induced regulation of genes related to proteasome pathway, nitrogen metabolism, and carotenoid metabolism is impaired in APX7i plants. On the other hand, genes associated with flavonoid and tyrosine metabolism are upregulated, while genes related to phytohormone signal transduction and nicotinate and nicotinamide metabolism are downregulated in APX7i during drought stress. These results suggest that OsAPX7 may be involved in signaling transduction pathways related to drought stress response in rice, providing insights into the physiological role of chloroplast APX isoforms.
Review
Agronomy
Savita Bhardwaj, Dhriti Sharma, Simranjeet Singh, Praveen C. Ramamurthy, Tunisha Verma, Mamta Pujari, Joginder Singh, Dhriti Kapoor, Ram Prasad
Summary: Silicon supplementation improves plant responses to stressful conditions and impacts the level of compatible solutes. It enhances the plant's antioxidant defense system, regulates the interaction of plant hormones and signaling molecules, and alleviates the effects of abiotic stresses.
Article
Plant Sciences
Vaibhav Kumar, Amresh Kumar, Kalpana Tewari, Nitin Kumar Garg, Sushil S. Changan, Aruna Tyagi
Summary: The induced water deficit Os-AP2/ERF-N22 promoter shows potential in enhancing rice drought tolerance and exhibits higher activity in transgenic plants.
PHYSIOLOGY AND MOLECULAR BIOLOGY OF PLANTS
(2022)
Article
Plant Sciences
Constanza Carmach, Monica Castro, Patricia Penaloza, Leda Guzman, Maria Jose Marchant, Samuel Valdebenito, Ivan Kopaitic
Summary: This study demonstrates that the use of green and red photo-selective filters significantly affects the process of graft union formation in tomato plants. The green filter enhances cell proliferation and early differentiation of vascular tissue cells, leading to increased overall growth. The results suggest that green filters have a positive impact on oxidative stress, anatomical development, and overall growth of grafted tomato plants.
Article
Biotechnology & Applied Microbiology
Muhammed Hamit Ekinci, Doga Selin Kayihan, Ceyhun Kayihan, Yelda Ozden Ciftci
Summary: The alteration of expression levels of cold- and oxidative stress-induced genes related-miRNAs is crucial for the successful development of cryopreservation protocols.
PLANT CELL TISSUE AND ORGAN CULTURE
(2021)
Article
Plant Sciences
Jian-Ping Lian, Chao Yuan, Yan-Zhao Feng, Qing Liu, Cong-Ying Wang, Yan-Fei Zhou, Qiao-Juan Huang, Qing-Feng Zhu, Yu-Chan Zhang, Yue-Qin Chen, Yang Yu
Summary: This study investigated the regulatory function of microRNA397 and its target gene LACCASE-15 in modulating flowering traits in rice. Overexpression of miR397 led to earlier heading dates and accelerated differentiation of the spikelet meristem, while overexpression of OsLAC15 resulted in delayed flowering and prolonged vegetative growth. The study also revealed the impact of miR397-OsLAC15 on carbohydrate accumulation and photosynthetic assimilation, ultimately enhancing the photosynthetic intensity in miR397-overexpressing rice plants. Furthermore, it was found that OsLAC15 regulates the photorespiration pathway and a high CO2 concentration could rescue the late flowering phenotype in OsLAC15-overexpressing plants.
Article
Plant Sciences
Maria Sanz-Fernandez, Alejandro Rodriguez-Gonzalez, Luisa M. Sandalio, Maria C. Romero-Puertas
Summary: Heavy metal concentrations have been increasing and affecting soil quality and crop yields. Mutants with different degrees of tolerance to heavy metals have been obtained, showing better growth performance under heavy metal mix conditions. KUP8, a potassium transporter, plays a role in regulating plant responses to heavy metals.
PHYSIOLOGIA PLANTARUM
(2021)
Article
Plant Sciences
Jesus D. Peco, Luisa M. Sandalio, Pablo Higueras, Adela Olmedilla, Juan A. Campos
Summary: Biscutella auriculata is able to tolerate high metal levels through activating specific mechanisms to neutralize oxidative stress and sequestering metals through phytochelatins.
PHYSIOLOGIA PLANTARUM
(2021)
Review
Plant Sciences
Fernando Dominguez, Francisco Javier Cejudo
Summary: Chloroplasts in plant cells serve as factories of metabolic intermediates supporting growth, with functions influenced by environmental cues. They not only sense changing environmental conditions and harmonize growth, but also play a crucial role in plant development by dismantling damaged chloroplasts in response to stressful environmental conditions, to prevent harmful effects from toxic by-products.
JOURNAL OF EXPERIMENTAL BOTANY
(2021)
Article
Plant Sciences
Valle Ojeda, Julia Jimenez-Lopez, Francisco Jose Romero-Campero, Francisco Javier Cejudo, Juan Manuel Perez-Ruiz
Summary: The study reveals a functional relationship between NTRC and 2-Cys Prxs in chloroplasts, primarily in controlling the redox balance of 2-Cys Prxs. This association may influence the redox status of chloroplast enzymes, playing a significant role in cytosolic protein quality control.
Review
Plant Sciences
M. Luisa Hernandez, Francisco Javier Cejudo
Summary: Plant productivity is reliant on the conversion of solar energy into biomass through oxygenic photosynthesis, which is carried out by protein-cofactor complexes like photosystems (PS) II and I, and ATP synthase. The unique lipid and fatty acid composition in chloroplast thylakoid membranes play a crucial role in oxygenic photosynthesis, and the redox state of the organelle is key in the rapid acclimation of plants to environmental changes.
FRONTIERS IN PLANT SCIENCE
(2021)
Article
Plant Sciences
Maria C. Romero-Puertas, Maria Angeles Pelaez-Vico, Diana M. Pazmino, Maria Rodriguez-Serrano, Laura Terron-Camero, Rocio Bautista, Aurelio Gomez-Cadenas, M. Gonzalo Claros, Jose Leon, Luisa M. Sandalio
Summary: The synthetic auxin 2,4-D triggers plant growth defects such as leaf epinasty and stem curvature, with ACX1 identified as a key source of ROS production and involvement in auxin-related signaling pathways. Different organelles play distinct roles in plant responses to 2,4-D, with ACX1 regulating protein degradation associated with auxin signaling.
PLANT CELL AND ENVIRONMENT
(2022)
Review
Biochemistry & Molecular Biology
Maria-Cruz Gonzalez, Francisco Javier Cejudo, Mariam Sahrawy, Antonio Jesus Serrato
Summary: The article discusses mechanisms that allow an appropriate electron flux to avoid the detrimental consequences of photosynthesis redox imbalances.
Article
Plant Sciences
Laura C. Terron-Cameron, M. Angeles Pelaez-Vico, A. Rodriguez-Gonzalez, Coral del Val, Luisa M. Sandalio, Maria C. Romero-Puertasl
Summary: Reactive oxygen species (ROS) act as secondary messengers that activate signal transduction and alter gene expression. The chemical identity and subcellular origin of ROS determine the transcriptome response. Transcriptomic studies on altered ROS metabolism in plant peroxisomes reveal common transcriptional footprints involved in metabolic pathways, gene regulation, and plant responses to abiotic stresses. Human orthologs of peroxisomal-dependent proteins are associated with cancer pathologies. Peroxisomal footprints provide valuable insights into peroxisomal functions in cellular metabolism under normal and stress conditions.
FRONTIERS IN PLANT SCIENCE
(2022)
Review
Biochemistry & Molecular Biology
Luisa M. Sandalio, Aurelio M. Collado-Arenal, Maria C. Romero-Puertas
Summary: Plant peroxisomes are dynamic organelles participating in a variety of metabolic processes and cell responses to the environment. This review focuses on the interactions and effects of reactive species such as ROS, RNS, CRS, and SRS in peroxisomes, as well as their role in regulating the redox/ROS homeostasis and plasticity of peroxisomes. The review also highlights the important role of H2O2-dependent peroxisomal retrograde signaling and discusses the specific peroxisomal footprint.
FREE RADICAL BIOLOGY AND MEDICINE
(2023)
Article
Biochemistry & Molecular Biology
Antonia M. Gallardo-Martinez, Julia Jimenez-Lopez, Maria Luisa Hernandez, Juan Manuel Perez-Ruiz, Francisco Javier Cejudo
Summary: The absence of 2-Cys Prxs leads to inhibition of seed development in Arabidopsis, highlighting the significance of plastid redox systems in embryogenesis.
Article
Biochemistry & Molecular Biology
Victor Delgado-Requerey, Francisco Javier Cejudo, Maria-Cruz Gonzalez
Summary: The NTRC-2-Cys-Prx system plays a central role in the coordinated regulation of chloroplast biosynthetic pathways and NADPH extrusion via malate valve. The functional relationship between NTRC, 2-Cys Prxs, and m-type Trxs is established. The impairment of NTRC-2-Cys-Prx system leads to severe phenotypic defects in Arabidopsis, which can be suppressed by decreasing the content of 2-Cys Prx.
Review
Plant Sciences
Francisco Javier Cejudo, Maria-Cruz Gonzalez, Juan Manuel Perez-Ruiz
Summary: Plant chloroplasts regulate enzyme activity through thiol-disulfide exchange, with NTRC and FDX-FTR-TRXs redox systems playing key roles in fine-tuning chloroplast performance in response to changes in light intensity. 2-Cys PRX is involved in controlling the reducing activity of chloroplast TRXs and the rapid oxidation of stromal enzymes during darkness, adding an additional layer of control to the signaling function of the chloroplast.
Article
Plant Sciences
Lina Duan, Juan Manuel Perez-Ruiz, Francisco Javier Cejudo, Jose R. Dinneny
Summary: The study reveals the essential role of CYP38-dependent photosynthetic activity in supporting root growth, partly through the synergistic effects of sucrose and auxin.
