Article
Biochemistry & Molecular Biology
Jinna Li, Bing Yu, Chunquan Ma, Hongli Li, Desheng Jiang, Jingdong Nan, Meng Xu, He Liu, Sixue Chen, Huizi Duanmu, Haiying Li
Summary: Salt stress induces cellular dehydration and oxidative stress in plants through the production of reactive oxygen species (ROS). The plant ROS scavenging system, including antioxidant enzymes, is crucial for maintaining cellular redox homeostasis. A study on the salt-tolerant sugar beet apomictic monosomic additional M14 line (BvM14) revealed that six antioxidant enzymes were responsive to salt stress. Cloning and overexpression of these genes in transgenic plants improved salt stress tolerance by regulating the levels of H2O2, MDA, AsA, and GSH. This research provides insights into the roles of antioxidant enzymes in the response to salt stress and offers genetic resources for crop engineering and breeding.
Article
Plant Sciences
Ershad Tavakol, Balint Jakli, Ismail Cakmak, Klaus Dittert, Mehmet Senbayram
Summary: In barley, there is an interactive effect between osmotic stress and potassium supply. Optimal potassium supply can reduce oxidative stress and improve stress tolerance. Milford cultivar shows better tolerance to stress compared to Sahin-91 cultivar.
Article
Plant Sciences
Dong Van Nguyen, Huong Mai Nguyen, Nga Thanh Le, Kien Huu Nguyen, Hoa Thi Nguyen, Huong Mai Le, Anh Trung Nguyen, Ngan Thi Thu Dinh, Son Anh Hoang, Chien Van Ha
Summary: Copper nanoparticle priming enhances drought tolerance in maize by increasing leaf water content and plant biomass, as well as anthocyanin, chlorophyll, and carotenoid contents, while decreasing reactive oxygen species accumulation and increasing reactive oxygen species scavenging enzyme activities. Additionally, applying copper nanoparticles increases total seed number and grain yield under drought stress conditions, suggesting a promising approach for the production of drought-tolerant crop plants.
JOURNAL OF PLANT GROWTH REGULATION
(2022)
Review
Biochemistry & Molecular Biology
Faisal Zulfiqar, Muhammad Ashraf
Summary: Plant bioregulators play a crucial role in managing oxidative stress tolerance in plants, offering a potential solution for food production under the threat of climate change through genetic engineering. Their ability to induce tolerance in stress sensitive crops highlights the importance of exploiting the plant defense system to engineer tolerant plants in the face of climate change. This review emphasizes the significance of PBRs in developing plants more resilient to harsh environmental conditions and discusses the advancement in engineering transgenic plants with modified PBR gene expression for enhanced oxidative stress resistance in an agricultural context.
PLANT MOLECULAR BIOLOGY
(2021)
Article
Plant Sciences
Mervat Sh Sadak, Rania S. Hanafy, Fatma M. A. M. Elkady, Asmaa M. Mogazy, Magdi T. Abdelhamid
Summary: Calcium application has a beneficial effect on salt-stressed wheat plants by increasing photosynthetic pigments, hormones, and antioxidant enzymes, reducing the accumulation of free radicals, and enhancing the osmotic adjustment of plants. It is an effective method to improve wheat plants' tolerance to salt stress and promote their growth.
Article
Plant Sciences
Sahana Basu, Surbhi Kumari, Pritee Subhadarshini, Aniket Kumar Rishu, Shashi Shekhar, Gautam Kumar
Summary: Soil salinity leading to sodium toxicity is a global challenge for agricultural productivity, and applying plant growth-promoting rhizobacteria (PGPR) can enhance plant salinity tolerance. This study found that the halotolerant Bacillus sp. BSE01 can improve salt stress endurance in chickpea by modulating hormonal signaling and maintaining cellular homeostasis.
PHYSIOLOGIA PLANTARUM
(2023)
Article
Chemistry, Multidisciplinary
Jian Wang, Yang Wang, Xiakeerzhati Xiaohalati, Qiangfei Su, Jingwei Liu, Bo Cai, Wen Yang, Zheng Wang, Lin Wang
Summary: After stroke, reactive oxygen species (ROS) cause oxidative stress, leading to neuronal damage and expansion of the damaged area, which is devastating to stroke patients. Nanozyme-based antioxidants have emerged as a potential treatment to scavenge ROS. However, the limited uptake abilities of neurons and barriers of organelle membranes hinder the efficient scavenging of ROS by most nanozymes, reducing their neuroprotective effects. To overcome this limitation, a novel nanozyme called pDA-MNOF is developed, which not only mimics the catalytic activities of a natural antioxidant enzyme but also enhances the production of two endogenous antioxidant enzymes in neurons. This dual anti-ROS effect of pDA-MNOF effectively reduces cellular ROS levels and protects neurons from ROS-induced injury. In vivo experiments show that pDA-MNOF treatment improves the survival of stroke mice by reducing the size of the damaged area and promoting behavioral recovery. Furthermore, pDA-MNOF activates a signaling pathway that enhances blood vessel formation, providing additional benefits for stroke treatment. The findings highlight the potential of pDA-MNOF as a dual ROS-scavenging agent for stroke therapy.
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
Biochemistry & Molecular Biology
Wei Guo, Yadi Xing, Xiumei Luo, Fuguang Li, Maozhi Ren, Yiming Liang
Summary: Reactive oxygen species (ROS) are crucial regulators in both plant and human cells, serving as messengers in multiple pathways. While they play a beneficial role in growth and development, excessive ROS can cause oxidative stress and damage cellular functions. This review highlights the current research and mechanisms of ROS in both kingdoms, emphasizing their interactions with other substances and proposing potential opportunities for novel therapeutic strategies and agricultural advancements.
INTERNATIONAL JOURNAL OF MOLECULAR SCIENCES
(2023)
Article
Biochemistry & Molecular Biology
Touhidur Rahman Anik, Mohammad Golam Mostofa, Mezanur Rahman, Arifur Rahman Khan, Protik Kumar Ghosh, Sharmin Sultana, Ashim Kumar Das, Saddam Hossain, Sanjida Sultana Keya, Abiar Rahman, Nusrat Jahan, Aarti Gupta, Lam-Son Phan Tran
Summary: Drought is a major threat to sustainable agricultural productivity, and finding a long-term solution to increase plants' tolerance to drought stress has been a key research focus. The present study provides persuasive evidence on the potential roles of zinc supplements in promoting tolerance of cotton plants exposed to drought. The results suggest that soil supplementation of zinc sulfate or zinc oxide improves various physiological, morphological, and biochemical features of cotton plants under drought stress, indicating their potential as effective techniques for boosting plant resilience to drought.
Review
Agronomy
Georgios Thalassinos, Spyridon A. Petropoulos, Aspasia Grammenou, Vasileios Antoniadis
Summary: The presence of potentially toxic elements (PTEs) can cause toxicity and growth inhibition in plants. These elements can accumulate and increase in concentration in the food chain due to their stability and resistance to degradation. The availability and movement of PTEs in soil depend on specific physicochemical processes. This study discusses the important soil processes that affect the uptake of PTEs by plants and the physiological mechanisms that plants use to mitigate PTE toxicity.
Article
Biochemistry & Molecular Biology
Miho Ohnishi, Riu Furutani, Takayuki Sohtome, Takeshi Suzuki, Shinya Wada, Soma Tanaka, Kentaro Ifuku, Daisei Ueno, Chikahiro Miyake
Summary: The study found that deficiencies of different minerals resulted in distinct changes in PSI and PSII parameters in sunflower leaves, such as an increase or decrease in oxidized P700. Specific responses of parameters to each mineral deficiency allowed for diagnosis of the deficiency and identification of which mineral affected photosynthesis.
Review
Biochemistry & Molecular Biology
Irina Georgiana Munteanu, Constantin Apetrei
Summary: This paper critically presents the most important tests used to determine antioxidant activity and their mechanisms, applicability, advantages and disadvantages. It covers tests based on the transfer of hydrogen atoms, electrons, and a combination of both, showcasing their efficacy in analyzing complex samples. Additionally, the paper discusses complementary methods using electrochemical biosensors to further understand the mechanisms and kinetics of antioxidants processes.
INTERNATIONAL JOURNAL OF MOLECULAR SCIENCES
(2021)
Article
Plant Sciences
Tahir Mahmood, Rashid Mehmood Rana, Sunny Ahmar, Saima Saeed, Asma Gulzar, Muhammad Azam Khan, Fahad Masoud Wattoo, Xiukang Wang, Ferdinando Branca, Freddy Mora-Poblete, Gabrielle Sousa Mafra, Xionming Du
Summary: Drought stress has a significant impact on the growth and pungency of pepper fruit, with water availability during flowering and pod formation stages being crucial for yield and pepper quality.
Article
Horticulture
Jiawen Zheng, Chunying Fang, Lei Ru, Nan Sun, Yuanyuan Liu, Yunping Huang, Yuhong Wang, Zhujun Zhu, Yong He
Summary: The study revealed that under waterlogging conditions, watermelon cultivar 'YL' exhibited higher expression of ClaAOX, which led to better photosynthesis and less oxidative damage compared to watermelon cultivar 'Zaojia8424'. Additionally, the alleviation of oxidative damage and promotion of photosynthesis in 'YL' were associated with increased levels of ascorbate, higher GSH/GSSG ratio, and enhanced activity of antioxidant enzymes, such as APX and CAT.
Article
Agronomy
Binbin Zhang, Huayi Yin, Zhihui Sun, Xiaohui Song, Jing Deng, Qian Zhang, Dongmei Li
Summary: The RIQ gene regulates the stacking of granum to optimize the structure of light-harvesting complex II and participates in plant light stress responses. The GmRIQ2 gene contributes to plant photoprotection and may negatively regulate yield. The GmRIQ2 promoter (PGmRIQ2) showed expression in soybean roots and had spatiotemporal expression characteristics in Arabidopsis thaliana rosette leaves, stems, and roots at the early growth stage. The promoter was induced by auxin, abscisic acid, methyl jasmonate, and light.
Article
Agriculture, Multidisciplinary
Qian Zhang, Yongxi Liu, Qiaoqiao Yu, Yue Ma, Wanrong Gu, Deguang Yang
CROP & PASTURE SCIENCE
(2020)
