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Karpinska B, Foyer CH. Superoxide signalling and antioxidant processing in the plant nucleus. JOURNAL OF EXPERIMENTAL BOTANY 2024; 75:4599-4610. [PMID: 38460122 PMCID: PMC11317529 DOI: 10.1093/jxb/erae090] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/18/2023] [Accepted: 03/08/2024] [Indexed: 03/11/2024]
Abstract
The superoxide anion radical (O2·-) is a one-electron reduction product of molecular oxygen. Compared with other forms of reactive oxygen species (ROS), superoxide has limited reactivity. Nevertheless, superoxide reacts with nitric oxide, ascorbate, and the iron moieties of [Fe-S] cluster-containing proteins. Superoxide has largely been neglected as a signalling molecule in the plant literature in favour of the most stable ROS form, hydrogen peroxide. However, superoxide can accumulate in plant cells, particularly in meristems, where superoxide dismutase activity and ascorbate accumulation are limited (or absent), or when superoxide is generated within the lipid environment of membranes. Moreover, oxidation of the nucleus in response to environmental stresses is a widespread phenomenon. Superoxide is generated in many intracellular compartments including mitochondria, chloroplasts, and on the apoplastic/cell wall face of the plasma membrane. However, nuclear superoxide production and functions remain poorly documented in plants. Accumulating evidence suggests that the nuclear pools of antioxidants such as glutathione are discrete and separate from the cytosolic pools, allowing compartment-specific signalling in the nucleus. We consider the potential mechanisms of superoxide generation and targets in the nucleus, together with the importance of antioxidant processing in regulating superoxide signalling.
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Affiliation(s)
- Barbara Karpinska
- School of Biosciences, College of Life and Environmental Sciences, University of Birmingham, Edgbaston, Birmingham, UK
| | - Christine H Foyer
- School of Biosciences, College of Life and Environmental Sciences, University of Birmingham, Edgbaston, Birmingham, UK
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2
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Lu B, Wang S, Feng H, Wang J, Zhang K, Li Y, Wu P, Zhang M, Xia Y, Peng C, Li C. FERONIA-mediated TIR1/AFB2 oxidation stimulates auxin signaling in Arabidopsis. MOLECULAR PLANT 2024; 17:772-787. [PMID: 38581129 DOI: 10.1016/j.molp.2024.04.002] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/08/2024] [Revised: 03/13/2024] [Accepted: 04/02/2024] [Indexed: 04/08/2024]
Abstract
The phytohormone auxin plays a pivotal role in governing plant growth and development. Although the TRANSPORT INHIBITOR RESPONSE1/AUXIN SIGNALING F-BOX (TIR1/AFB) receptors function in both the nucleus and cytoplasm, the mechanism governing the distribution of TIR1/AFBs between these cellular compartments remains unknown. In this study, we demonstrate that auxin-mediated oxidation of TIR1/AFB2 is essential for their targeting to the nucleus. We showed that small active molecules, reactive oxygen species (ROS) and nitric oxide (NO), are indispensable for the nucleo-cytoplasmic distribution of TIR1/AFB2 in trichoblasts and root hairs. Further studies revealed that this process is regulated by the FERONIA receptor kinase-NADPH oxidase signaling pathway. Interestingly, ROS and NO initiate oxidative modifications in TIR1C140/516 and AFB2C135/511, facilitating their subsequent nuclear import. The oxidized forms of TIR1C140/516 and AFB2C135/511 play a crucial role in enhancing the function of TIR1 and AFB2 in transcriptional auxin responses. Collectively, our study reveals a novel mechanism by which auxin stimulates the transport of TIR1/AFB2 from the cytoplasm to the nucleus, orchestrated by the FERONIA-ROS signaling pathway.
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Affiliation(s)
- Baiyan Lu
- School of Life Sciences, East China Normal University, Shanghai 200241, China
| | - Shengnan Wang
- School of Life Sciences, East China Normal University, Shanghai 200241, China
| | - Hanqian Feng
- School of Life Sciences, East China Normal University, Shanghai 200241, China
| | - Jing Wang
- School of Life Sciences, East China Normal University, Shanghai 200241, China
| | - Kaixing Zhang
- School of Life Sciences, East China Normal University, Shanghai 200241, China
| | - Yilin Li
- National Facility for Protein Science Shanghai, Zhangjiang Lab, Shanghai Advanced Research Institute, Chinese Academy of Sciences, Shanghai 201210, China
| | - Ping Wu
- National Facility for Protein Science Shanghai, Zhangjiang Lab, Shanghai Advanced Research Institute, Chinese Academy of Sciences, Shanghai 201210, China
| | - Minmin Zhang
- School of Life Sciences, East China Normal University, Shanghai 200241, China
| | - Yanshu Xia
- School of Life Sciences, East China Normal University, Shanghai 200241, China
| | - Chao Peng
- National Facility for Protein Science Shanghai, Zhangjiang Lab, Shanghai Advanced Research Institute, Chinese Academy of Sciences, Shanghai 201210, China
| | - Chao Li
- School of Life Sciences, East China Normal University, Shanghai 200241, China.
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3
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Wei X, Zhu Y, Xie W, Ren W, Zhang Y, Zhang H, Dai S, Huang CF. H2O2 negatively regulates aluminum resistance via oxidation and degradation of the transcription factor STOP1. THE PLANT CELL 2024; 36:688-708. [PMID: 37936326 PMCID: PMC10896299 DOI: 10.1093/plcell/koad281] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/20/2023] [Revised: 10/11/2023] [Accepted: 10/11/2023] [Indexed: 11/09/2023]
Abstract
Aluminum (Al) stress triggers the accumulation of hydrogen peroxide (H2O2) in roots. However, whether H2O2 plays a regulatory role in aluminum resistance remains unclear. In this study, we show that H2O2 plays a crucial role in regulation of Al resistance, which is modulated by the mitochondrion-localized pentatricopeptide repeat protein REGULATION OF ALMT1 EXPRESSION 6 (RAE6). Mutation in RAE6 impairs the activity of complex I of the mitochondrial electron transport chain, resulting in the accumulation of H2O2 and increased sensitivity to Al. Our results suggest that higher H2O2 concentrations promote the oxidation of SENSITIVE TO PROTON RHIZOTOXICITY 1 (STOP1), an essential transcription factor that promotes Al resistance, thereby promoting its degradation by enhancing the interaction between STOP1 and the F-box protein RAE1. Conversely, decreasing H2O2 levels or blocking the oxidation of STOP1 leads to greater STOP1 stability and increased Al resistance. Moreover, we show that the thioredoxin TRX1 interacts with STOP1 to catalyze its chemical reduction. Thus, our results highlight the importance of H2O2 in Al resistance and regulation of STOP1 stability in Arabidopsis (Arabidopsis thaliana).
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Affiliation(s)
- Xiang Wei
- National Key Laboratory of Plant Molecular Genetics, Key Laboratory of Plant Design, Shanghai Center for Plant Stress Biology, Center for Excellence in Molecular Plant Sciences, Chinese Academy of Sciences, Shanghai 200032, China
- University of the Chinese Academy of Sciences, Beijing 100049, China
| | - Yifang Zhu
- National Key Laboratory of Plant Molecular Genetics, Key Laboratory of Plant Design, Shanghai Center for Plant Stress Biology, Center for Excellence in Molecular Plant Sciences, Chinese Academy of Sciences, Shanghai 200032, China
| | - Wenxiang Xie
- National Key Laboratory of Plant Molecular Genetics, Key Laboratory of Plant Design, Shanghai Center for Plant Stress Biology, Center for Excellence in Molecular Plant Sciences, Chinese Academy of Sciences, Shanghai 200032, China
| | - Weiwei Ren
- Development Center of Plant Germplasm Resources and Shanghai Key Laboratory of Plant Molecular Sciences, College of Life Sciences, Shanghai Normal University, Shanghai 200234, China
| | - Yang Zhang
- National Key Laboratory of Plant Molecular Genetics, Key Laboratory of Plant Design, Shanghai Center for Plant Stress Biology, Center for Excellence in Molecular Plant Sciences, Chinese Academy of Sciences, Shanghai 200032, China
| | - Hui Zhang
- Development Center of Plant Germplasm Resources and Shanghai Key Laboratory of Plant Molecular Sciences, College of Life Sciences, Shanghai Normal University, Shanghai 200234, China
| | - Shaojun Dai
- Development Center of Plant Germplasm Resources and Shanghai Key Laboratory of Plant Molecular Sciences, College of Life Sciences, Shanghai Normal University, Shanghai 200234, China
| | - Chao-Feng Huang
- National Key Laboratory of Plant Molecular Genetics, Key Laboratory of Plant Design, Shanghai Center for Plant Stress Biology, Center for Excellence in Molecular Plant Sciences, Chinese Academy of Sciences, Shanghai 200032, China
- University of the Chinese Academy of Sciences, Beijing 100049, China
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4
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Yang S, Chen N, Qi J, Salam A, Khan AR, Azhar W, Yang C, Xu N, Wu J, Liu Y, Liu B, Gan Y. OsUGE2 Regulates Plant Growth through Affecting ROS Homeostasis and Iron Level in Rice. RICE (NEW YORK, N.Y.) 2024; 17:6. [PMID: 38212485 PMCID: PMC10784444 DOI: 10.1186/s12284-024-00685-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/11/2022] [Accepted: 01/04/2024] [Indexed: 01/13/2024]
Abstract
BACKGROUND The growth and development of rice (Oryza sativa L.) are affected by multiple factors, such as ROS homeostasis and utilization of iron. Here, we demonstrate that OsUGE2, a gene encoding a UDP-glucose 4-epimerase, controls growth and development by regulating reactive oxygen species (ROS) and iron (Fe) level in rice. Knockout of this gene resulted in impaired growth, such as dwarf phenotype, weakened root growth and pale yellow leaves. Biochemical analysis showed that loss of function of OsUGE2 significantly altered the proportion and content of UDP-Glucose (UDP-Glc) and UDP-Galactose (UDP-Gal). Cellular observation indicates that the impaired growth may result from decreased cell length. More importantly, RNA-sequencing analysis showed that knockout of OsUGE2 significantly influenced the expression of genes related to oxidoreductase process and iron ion homeostasis. Consistently, the content of ROS and Fe are significantly decreased in OsUGE2 knockout mutant. Furthermore, knockout mutants of OsUGE2 are insensitive to both Fe deficiency and hydrogen peroxide (H2O2) treatment, which further confirmed that OsUGE2 control rice growth possibly through Fe and H2O2 signal. Collectively, these results reveal a new pathway that OsUGE2 could affect growth and development via influencing ROS homeostasis and Fe level in rice.
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Affiliation(s)
- Shuaiqi Yang
- Zhejiang Key Lab of Crop Germplasm, Department of Agronomy, College of Agriculture and Biotechnology, Zhejiang University, Hangzhou, 310000, China
| | - Nana Chen
- Zhejiang Key Lab of Crop Germplasm, Department of Agronomy, College of Agriculture and Biotechnology, Zhejiang University, Hangzhou, 310000, China
| | - Jiaxuan Qi
- Zhejiang Key Lab of Crop Germplasm, Department of Agronomy, College of Agriculture and Biotechnology, Zhejiang University, Hangzhou, 310000, China
| | - Abdul Salam
- Zhejiang Key Lab of Crop Germplasm, Department of Agronomy, College of Agriculture and Biotechnology, Zhejiang University, Hangzhou, 310000, China
| | - Ali Raza Khan
- Zhejiang Key Lab of Crop Germplasm, Department of Agronomy, College of Agriculture and Biotechnology, Zhejiang University, Hangzhou, 310000, China
| | - Wardah Azhar
- Zhejiang Key Lab of Crop Germplasm, Department of Agronomy, College of Agriculture and Biotechnology, Zhejiang University, Hangzhou, 310000, China
| | - Chunyan Yang
- Zhejiang Key Lab of Crop Germplasm, Department of Agronomy, College of Agriculture and Biotechnology, Zhejiang University, Hangzhou, 310000, China
| | - Nuo Xu
- Zhejiang Key Lab of Crop Germplasm, Department of Agronomy, College of Agriculture and Biotechnology, Zhejiang University, Hangzhou, 310000, China
| | - Junyu Wu
- Zhejiang Key Lab of Crop Germplasm, Department of Agronomy, College of Agriculture and Biotechnology, Zhejiang University, Hangzhou, 310000, China
| | - Yihua Liu
- College of Agriculture and Forestry Sciences, Linyi University, Linyi, 276000, Shandong, China
| | - Bohan Liu
- College of Agriculture, Hunan Agricultural University, Changsha, 410128, China
| | - Yinbo Gan
- Zhejiang Key Lab of Crop Germplasm, Department of Agronomy, College of Agriculture and Biotechnology, Zhejiang University, Hangzhou, 310000, China.
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5
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Uji T, Mizuta H. The role of plant hormones on the reproductive success of red and brown algae. FRONTIERS IN PLANT SCIENCE 2022; 13:1019334. [PMID: 36340345 PMCID: PMC9627609 DOI: 10.3389/fpls.2022.1019334] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 08/15/2022] [Accepted: 10/04/2022] [Indexed: 06/16/2023]
Abstract
Seaweeds or macroalgae are important primary producers that serve as a habitat for functioning ecosystems. A sustainable production of macroalgae has been maintained by a diverse range of life cycles. Reproduction is the most dynamic change to occur during its life cycle, and it is a key developmental event to ensure the species' survival. There is gradually accumulating evidence that plant hormones, such as abscisic acid and auxin, have a role on the sporogenesis of brown alga (Saccharina japonica). Recent studies reported that 1-aminocylopropane-1-carboxylic acid, an ethylene precursor, regulates sexual reproduction in red alga (Neopyropia yezoensis) independently from ethylene. In addition, these macroalgae have an enhanced tolerance against abiotic and biotic stresses during reproduction to protect their gametes and spores. Herein, we reviewed the current understanding on the regulatory mechanisms of red and brown algae on their transition from vegetative to reproductive phase.
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Branco S, Schauster A, Liao HL, Ruytinx J. Mechanisms of stress tolerance and their effects on the ecology and evolution of mycorrhizal fungi. THE NEW PHYTOLOGIST 2022; 235:2158-2175. [PMID: 35713988 DOI: 10.1111/nph.18308] [Citation(s) in RCA: 26] [Impact Index Per Article: 13.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/04/2022] [Accepted: 05/11/2022] [Indexed: 05/25/2023]
Abstract
Stress is ubiquitous and disrupts homeostasis, leading to damage, decreased fitness, and even death. Like other organisms, mycorrhizal fungi evolved mechanisms for stress tolerance that allow them to persist or even thrive under environmental stress. Such mechanisms can also protect their obligate plant partners, contributing to their health and survival under hostile conditions. Here we review the effects of stress and mechanisms of stress response in mycorrhizal fungi. We cover molecular and cellular aspects of stress and how stress impacts individual fitness, physiology, growth, reproduction, and interactions with plant partners, along with how some fungi evolved to tolerate hostile environmental conditions. We also address how stress and stress tolerance can lead to adaptation and have cascading effects on population- and community-level diversity. We argue that mycorrhizal fungal stress tolerance can strongly shape not only fungal and plant physiology, but also their ecology and evolution. We conclude by pointing out knowledge gaps and important future research directions required for both fully understanding stress tolerance in the mycorrhizal context and addressing ongoing environmental change.
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Affiliation(s)
- Sara Branco
- Department of Integrative Biology, University of Colorado Denver, Denver, CO, 80204, USA
| | - Annie Schauster
- Department of Integrative Biology, University of Colorado Denver, Denver, CO, 80204, USA
| | - Hui-Ling Liao
- North Florida Research and Education Center, University of Florida, Quincy, FL, 32351, USA
- Soil and Water Sciences Department, University of Florida, Gainesville, FL, 32611, USA
| | - Joske Ruytinx
- Research Groups Microbiology and Plant Genetics, Vrije Universiteit Brussel, 1050, Brussels, Belgium
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7
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Calcium in Photosynthetic Restoration and Growth of Annona emarginata after Mechanical Damage. HORTICULTURAE 2022. [DOI: 10.3390/horticulturae8060495] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/07/2022]
Abstract
Calcium, an essential element with structural function in the cell wall and plasma membrane, in addition to being a secondary messenger, is responsible for the regulation of physiological processes in plant development and responses to biotic and abiotic stresses. This study investigated the effects of calcium variation on photosynthetic performance, growth, and enzymatic antioxidant defense system in A. emarginata subjected to mechanical damage. The experimental design was in 6 × 5 factorial randomized blocks. A. emarginata plants were submitted to the six treatments: plants grown in solution with 0 mM Ca2+ without mechanical damage, 0 mM Ca2+ with mechanical damage, 2 mM Ca2+ without mechanical damage, 2 mM Ca2+ with mechanical damage, 4 mM Ca2+ without mechanical damage, and 4 mM Ca2+ with mechanical damage, as well as five evaluation periods at 0, 15, 30, 60, and 90 days after mechanical damage. The fluorescence of chlorophyll a, gas exchange, total dry mass, quantitative growth, and lipid peroxidation was studied. It is concluded that the A. emarginata plants showed better performance in restoration after mechanical damage in the presence of Ca2+ and was more sensitive in the absence of the mineral. Cultivation of the species with 2 mM Ca2+ in complete nutrient solution was sufficient to guarantee the efficiency of the enzymatic antioxidant defense system, and photosynthetic restoration of plants subjected to mechanical damage.
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8
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Jabeen M, Akram NA, Ashraf M, Tyagi A, El-Sheikh MA, Ahmad P. Thiamin stimulates growth, yield quality and key biochemical processes of cauliflower (Brassica oleracea L. var. Botrytis) under arid conditions. PLoS One 2022; 17:e0266372. [PMID: 35613077 PMCID: PMC9132317 DOI: 10.1371/journal.pone.0266372] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/29/2021] [Accepted: 03/20/2022] [Indexed: 11/18/2022] Open
Abstract
Thiamin is a crucial vitamin with a vast variety of anti-oxidative and physiological roles in plants subjected to abiotic stresses. We examined the efficiency of foliar-applied thiamin (50 and 100 mM) on growth, yield quality and key-biochemical characteristics of two cultivars (FD1 and FD3) of cauliflower (Brassica oleracea L.) under water-deficit stress. Water stress at the rate of 50% field capacity (F.C.) markedly decreased the plant biomass, leaf total phenolics and ascorbic acid (AsA) contents. In contrast, drought-induced increase was noted in the leaf [hydrogen peroxide (H2O2), AsA, proline, malondialdehyde (MDA), glycinebetaine (GB), total soluble proteins and oxidative defense system in terms of high activities of peroxidase (POD), and catalase (CAT) enzymes] and the inflorescence (total phenolics, proline, GB, MDA, H2O2, and activities of SOD and CAT enzymes) characteristics of cauliflower. However, foliar-applied thiamin significantly improved growth and physio-biochemical attributes except leaf and inflorescence MDA and H2O2 contents of both cauliflower cultivars under water stress. Overall, application of thiamin enhanced the plant growth may be associated with suppressed reactive oxygen species (ROS) and upregulated antioxidants defense system of cauliflower.
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Affiliation(s)
- Munifa Jabeen
- Department of Botany, Government College University, Faisalabad, Pakistan
| | - Nudrat Aisha Akram
- Department of Botany, Government College University, Faisalabad, Pakistan
- * E-mail: (NAA); (PA)
| | | | - Anshika Tyagi
- Department of Biotechnology, Yeungnam University, Gyeongsan, South Korea
| | - Mohamed A. El-Sheikh
- Botany and Microbiology Department, College of Science, King Saud University, Riyadh, Saudi Arabia
| | - Parvaiz Ahmad
- Department of Botany, Govt. Degree College, Pulwama, Srinagar, Jammu and Kashmir, India
- * E-mail: (NAA); (PA)
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9
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Bio- and phytoremediation: plants and microbes to the rescue of heavy metal polluted soils. SN APPLIED SCIENCES 2022. [DOI: 10.1007/s42452-021-04911-y] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022] Open
Abstract
AbstractBio- and phytoremediation, being encouraging terms implying the use of biological systems for cleansing purposes, have risen a worthy venture toward environmental restoration in discouraging scenarios, such as the augmentation of indestructible heavy metals. Hyperaccumulating plants and heavy metal resistant microbes own mechanisms embedded in their metabolism, proteins, and genes that confer them with “super characteristics” allowing them to assimilate heavy metals in order to amend polluted soils, and when combined in a symbiotic system, these super features could complement each other and be enhanced to overpower the exposure to toxic environments. Though xenobiotic pollution has been an object of concern for decades and physicochemical procedures are commonly carried out to offset this purpose, a “live” remediation is rather chosen and looked upon for promising results. A variety of benefits have been registered from symbiotic relationships, including plants teaming up with microbes to cope down with non-biodegradable elements such as heavy metals; but a carefully maneuvered interaction might signify a greater insight toward the application of bioremediation systems. These manipulations could consist of genetic engineering and/or additional supplementation of molecules and microbes. In the present study, a contemporary connection between plants and microbes involving their controlled management is summarized in a visionary display.
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10
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Cataldo E, Fucile M, Mattii GB. Biostimulants in Viticulture: A Sustainable Approach against Biotic and Abiotic Stresses. PLANTS (BASEL, SWITZERLAND) 2022; 11:162. [PMID: 35050049 PMCID: PMC8777853 DOI: 10.3390/plants11020162] [Citation(s) in RCA: 9] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/20/2021] [Revised: 01/04/2022] [Accepted: 01/06/2022] [Indexed: 05/12/2023]
Abstract
Climate change and disproportionate anthropogenic interventions, such as the excess of phytopharmaceutical products and continuous soil tillage, are jeopardizing viticulture by subjecting plants to continuous abiotic stress. One of the main physiological repercussions of abiotic stress is represented by the unbalanced redox homeostasis due to the overproduction of reactive oxygen species (ROS), ultimately leading to a state of oxidative stress (detrimental to grape quality). To these are added the direct and indirect damages caused by pathogens (biotic stresses). In light of this scenario, it is inevitable that sustainable techniques and sensitivity approaches for environmental and human health have to be applied in viticulture. Sustainable viticulture can only be made with the aid of sustainable products. Biostimulant (PB) applications (including resistance inducers or elicitors) in the vineyard have become interesting maneuvers for counteracting vine diseases and improving grape quality. These also represent a partial alternative to soil fertilization by improving nutrient absorption and avoiding its leaching into the groundwater. Their role as elicitors has important repercussions in the stimulation of the phenylpropanoid pathway by triggering the activation of several enzymes, such as polyphenol oxidase, lipoxygenase, phenylalanine ammonia-lyase, and peroxidase (with the accumulation of phenolic compounds). The present review paper summarizes the PBs' implications in viticulture, gathering historical, functional, and applicative information. This work aims to highlight the innumerable beneficial effects on vines brought by these products. It also serves to spur the scientific community to a greater contribution in investigating the response mechanisms of the plant to positive inductions.
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Affiliation(s)
- Eleonora Cataldo
- Department of Agriculture, Food, Environment and Forestry (DAGRI), University of Florence, 50019 Sesto Fiorentino, Italy; (M.F.); (G.B.M.)
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11
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Gallé Á, Bela K, Hajnal Á, Faragó N, Horváth E, Horváth M, Puskás L, Csiszár J. Crosstalk between the redox signalling and the detoxification: GSTs under redox control? PLANT PHYSIOLOGY AND BIOCHEMISTRY : PPB 2021; 169:149-159. [PMID: 34798389 DOI: 10.1016/j.plaphy.2021.11.009] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/13/2021] [Revised: 10/24/2021] [Accepted: 11/08/2021] [Indexed: 06/13/2023]
Abstract
Reactive oxygen species (ROS), antioxidants and their reduction-oxidation (redox) states all contribute to the redox homeostasis, but glutathione is considered to be the master regulator of it. We aimed to understand the relationship between the redox potential and the diverse glutathione transferase (GST) enzyme family by comparing the stress responses of two tomato cultivars (Solanum lycopersicum 'Moneymaker' and 'Ailsa Craig'). Four-week-old plants were treated by two concentrations of mannitol, NaCl and salicylic acid. The lower H2O2 and malondialdehyde contents indicated higher stress tolerance of 'Moneymaker'. The redox status of roots was characterized by measuring the reduced and oxidized form of ascorbate and glutathione spectrophotometrically after 24 h. The redox potential of 'Ailsa Craig' was more oxidized compared to 'Moneymaker' even under control conditions and became more positive due to treatments. High-throughput quantitative real-time PCR revealed that besides overall higher expression levels, SlGSTs were activated more efficiently in 'Moneymaker' due to stresses, resulting in generally higher GST and glutathione peroxidase activities compared to 'Ailsa Craig'. The expression level of SlGSTs correlated differently, however Pearson's correlation analysis showed usually strong positive correlation between SlGST transcription and glutathione redox potential. The possible redox regulation of SlGST expressions was discussed.
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Affiliation(s)
- Ágnes Gallé
- Department of Plant Biology, Faculty of Sciences, University of Szeged, Közép fasor 52, 6726, Szeged, Hungary
| | - Krisztina Bela
- Department of Plant Biology, Faculty of Sciences, University of Szeged, Közép fasor 52, 6726, Szeged, Hungary
| | - Ádám Hajnal
- Department of Plant Biology, Faculty of Sciences, University of Szeged, Közép fasor 52, 6726, Szeged, Hungary
| | - Nóra Faragó
- Avidin Ltd., Alsó Kikötő sor 11/D, Szeged, 6726, Hungary; Laboratory of Functional Genomics, Biological Research Centre, Temesvári körút 62, Szeged, 6726, Hungary; Research Group for Cortical Microcircuits of the Hungarian Academy of Sciences, Department of Physiology, Anatomy and Neuroscience, University of Szeged, Közép fasor 52, Szeged, 6726, Hungary
| | - Edit Horváth
- Department of Plant Biology, Faculty of Sciences, University of Szeged, Közép fasor 52, 6726, Szeged, Hungary
| | - Mátyás Horváth
- Department of Plant Biology, Faculty of Sciences, University of Szeged, Közép fasor 52, 6726, Szeged, Hungary
| | - László Puskás
- Avidin Ltd., Alsó Kikötő sor 11/D, Szeged, 6726, Hungary; Laboratory of Functional Genomics, Biological Research Centre, Temesvári körút 62, Szeged, 6726, Hungary
| | - Jolán Csiszár
- Department of Plant Biology, Faculty of Sciences, University of Szeged, Közép fasor 52, 6726, Szeged, Hungary.
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12
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Current Knowledge on Mechanisms Preventing Photosynthesis Redox Imbalance in Plants. Antioxidants (Basel) 2021; 10:antiox10111789. [PMID: 34829660 PMCID: PMC8614926 DOI: 10.3390/antiox10111789] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/11/2021] [Revised: 10/28/2021] [Accepted: 11/05/2021] [Indexed: 12/03/2022] Open
Abstract
Photosynthesis includes a set of redox reactions that are the source of reducing power and energy for the assimilation of inorganic carbon, nitrogen and sulphur, thus generating organic compounds, and oxygen, which supports life on Earth. As sessile organisms, plants have to face continuous changes in environmental conditions and need to adjust the photosynthetic electron transport to prevent the accumulation of damaging oxygen by-products. The balance between photosynthetic cyclic and linear electron flows allows for the maintenance of a proper NADPH/ATP ratio that is adapted to the plant’s needs. In addition, different mechanisms to dissipate excess energy operate in plants to protect and optimise photosynthesis under adverse conditions. Recent reports show an important role of redox-based dithiol–disulphide interchanges, mediated both by classical and atypical chloroplast thioredoxins (TRXs), in the control of these photoprotective mechanisms. Moreover, membrane-anchored TRX-like proteins, such as HCF164, which transfer electrons from stromal TRXs to the thylakoid lumen, play a key role in the regulation of lumenal targets depending on the stromal redox poise. Interestingly, not all photoprotective players were reported to be under the control of TRXs. In this review, we discuss recent findings regarding the mechanisms that allow an appropriate electron flux to avoid the detrimental consequences of photosynthesis redox imbalances.
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13
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Qi WY, Li Q, Chen H, Liu J, Xing SF, Xu M, Yan Z, Song C, Wang SG. Selenium nanoparticles ameliorate Brassica napus L. cadmium toxicity by inhibiting the respiratory burst and scavenging reactive oxygen species. JOURNAL OF HAZARDOUS MATERIALS 2021; 417:125900. [PMID: 33975164 DOI: 10.1016/j.jhazmat.2021.125900] [Citation(s) in RCA: 40] [Impact Index Per Article: 13.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/27/2020] [Revised: 04/12/2021] [Accepted: 04/12/2021] [Indexed: 05/10/2023]
Abstract
Cadmium (Cd) is a widely distributed soil contaminant which induces oxidative damage and is therefore toxic to plants. Although selenium oxyanions such as selenite (SeO32-) and selenate (SeO42-) can alleviate Cd stress to plants, it is not known whether selenium nanoparticles (SeNPs) are able to do the same. The present study demonstrated the positive impact of both SeNPs and SeO32- on Brassica napus L. growth under conditions of Cd stress. Underlying mechanisms were elucidated using an oxidative stress detection assay, whole-genome RNA sequencing, and RT-qPCR. Application of selenium, especially in the form of SeNPs, decreased Cd-induced reactive oxygen species production by inhibiting the expression of NADPH oxidases (BnaRBOHC, BnaRBOHD1, and BnaRBOHF1) and glycolate oxidase (BnaGLO), thereby decreasing oxidative protein and membrane lipid damage. In addition, SeNPs improved resistance to Cd stress by decreasing Cd accumulation, maintaining intracellular calcium homeostasis, promoting disulfide bond formation, and restoring the waxy outer layer of the leaf surface. Although both forms of selenium decreased Cd toxicity, the beneficial concentration range was more extensive for SeNPs than for SeO32-.
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Affiliation(s)
- Wen-Yu Qi
- Shandong Key Laboratory of Water Pollution Control and Resource Reuse, School of Environmental Science and Engineering, Shandong University, Qingdao 266237, China
| | - Qiang Li
- College of Agriculture and Forestry Science, Linyi University, Linyi 276002, China; State Key Laboratory of Microbial Technology, Shandong University, Qingdao 266237, China
| | - Hui Chen
- Shandong Key Laboratory of Water Pollution Control and Resource Reuse, School of Environmental Science and Engineering, Shandong University, Qingdao 266237, China
| | - Jun Liu
- Shandong Key Laboratory of Water Pollution Control and Resource Reuse, School of Environmental Science and Engineering, Shandong University, Qingdao 266237, China
| | - Su-Fang Xing
- Shandong Key Laboratory of Water Pollution Control and Resource Reuse, School of Environmental Science and Engineering, Shandong University, Qingdao 266237, China
| | - Meng Xu
- College of Agriculture and Forestry Science, Linyi University, Linyi 276002, China
| | - Zhen Yan
- Shandong Key Laboratory of Water Pollution Control and Resource Reuse, School of Environmental Science and Engineering, Shandong University, Qingdao 266237, China
| | - Chao Song
- Shandong Key Laboratory of Water Pollution Control and Resource Reuse, School of Environmental Science and Engineering, Shandong University, Qingdao 266237, China
| | - Shu-Guang Wang
- Shandong Key Laboratory of Water Pollution Control and Resource Reuse, School of Environmental Science and Engineering, Shandong University, Qingdao 266237, China.
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14
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Tola AJ, Jaballi A, Missihoun TD. Protein Carbonylation: Emerging Roles in Plant Redox Biology and Future Prospects. PLANTS (BASEL, SWITZERLAND) 2021; 10:1451. [PMID: 34371653 PMCID: PMC8309296 DOI: 10.3390/plants10071451] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 05/28/2021] [Revised: 06/26/2021] [Accepted: 07/09/2021] [Indexed: 12/15/2022]
Abstract
Plants are sessile in nature and they perceive and react to environmental stresses such as abiotic and biotic factors. These induce a change in the cellular homeostasis of reactive oxygen species (ROS). ROS are known to react with cellular components, including DNA, lipids, and proteins, and to interfere with hormone signaling via several post-translational modifications (PTMs). Protein carbonylation (PC) is a non-enzymatic and irreversible PTM induced by ROS. The non-enzymatic feature of the carbonylation reaction has slowed the efforts to identify functions regulated by PC in plants. Yet, in prokaryotic and animal cells, studies have shown the relevance of protein carbonylation as a signal transduction mechanism in physiological processes including hydrogen peroxide sensing, cell proliferation and survival, ferroptosis, and antioxidant response. In this review, we provide a detailed update on the most recent findings pertaining to the role of PC and its implications in various physiological processes in plants. By leveraging the progress made in bacteria and animals, we highlight the main challenges in studying the impacts of carbonylation on protein functions in vivo and the knowledge gap in plants. Inspired by the success stories in animal sciences, we then suggest a few approaches that could be undertaken to overcome these challenges in plant research. Overall, this review describes the state of protein carbonylation research in plants and proposes new research avenues on the link between protein carbonylation and plant redox biology.
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Affiliation(s)
| | | | - Tagnon D. Missihoun
- Groupe de Recherche en Biologie Végétale (GRBV), Department of Chemistry, Biochemistry and Physics, Université du Québec à Trois-Rivières, 3351 boul. des Forges, Trois-Rivières, QC G9A 5H7, Canada; (A.J.T.); (A.J.)
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15
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Sasidharan R, Schippers JHM, Schmidt RR. Redox and low-oxygen stress: signal integration and interplay. PLANT PHYSIOLOGY 2021; 186:66-78. [PMID: 33793937 PMCID: PMC8154046 DOI: 10.1093/plphys/kiaa081] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/07/2020] [Accepted: 11/26/2020] [Indexed: 05/21/2023]
Abstract
Plants are aerobic organisms relying on oxygen to serve their energy needs. The amount of oxygen available to sustain plant growth can vary significantly due to environmental constraints or developmental programs. In particular, flooding stress, which negatively impacts crop productivity, is characterized by a decline in oxygen availability. Oxygen fluctuations result in an altered redox balance and the formation of reactive oxygen/nitrogen species (ROS/RNS) during the onset of hypoxia and upon re-oxygenation. In this update, we provide an overview of the current understanding of the impact of redox and ROS/RNS on low-oxygen signaling and adaptation. We first focus on the formation of ROS and RNS during low-oxygen conditions. Following this, we examine the impact of hypoxia on cellular and organellar redox systems. Finally, we describe how redox and ROS/RNS participate in signaling events during hypoxia through potential post-translational modifications (PTMs) of hypoxia-relevant proteins. The aim of this update is to define our current understanding of the field and to provide avenues for future research directions.
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Affiliation(s)
- Rashmi Sasidharan
- Plant Ecophysiology, Institute of Environmental Biology, Utrecht University, Utrecht 3584 CH, The Netherlands
| | - Jos H M Schippers
- Department of Molecular Genetics, Leibniz Institute of Plant Genetics and Crop Plant Research (IPK) Gatersleben, Seeland 06466, Germany
| | - Romy R Schmidt
- Faculty of Biology, Plant Biotechnology Group, Bielefeld University, Bielefeld 33615, Germany
- Author for communication:
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16
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Haberkorn I, Siegenthaler L, Buchmann L, Neutsch L, Mathys A. Enhancing single-cell bioconversion efficiency by harnessing nanosecond pulsed electric field processing. Biotechnol Adv 2021; 53:107780. [PMID: 34048886 DOI: 10.1016/j.biotechadv.2021.107780] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/19/2020] [Revised: 04/23/2021] [Accepted: 05/18/2021] [Indexed: 11/29/2022]
Abstract
Nanosecond pulsed electric field (nsPEF) processing is gaining momentum as a physical means for single-cell bioconversion efficiency enhancement. The technology allows biomass yields per substrate (YX/S) to be leveraged and poses a viable option for stimulating intracellular compound production. NsPEF processing thus resonates with myriad domains spanning the pharmaceutical and medical sectors, as well as food and feed production. The exact working mechanisms underlying nsPEF-based enhancement of bioconversion efficiency, however, remain elusive, and a better understanding would be pivotal for leveraging process control to broaden the application of nsPEF and scale-up industrial implementation. To bridge this gap, the study provides the electrotechnological and metabolic fundamentals of nsPEF processing in the bio-based domain to enable a critical evaluation of pathways underlying the enhancement of single-cell bioconversion efficiency. Evidence suggests that treating cells during the rapid proliferating and thus the early to mid-exponential state of cellular growth is critical to promoting bioconversion efficiency. A combined effect of transient intracellular and sublethal stress induction and effects caused on the plasma membrane level result in an enhancement of cellular bioconversion efficiency. Congruency exists regarding the involvement of transient cytosolic Ca2+ hubs in nsPEF treatment responses, as well as that of reactive oxygen species formation culminating in the onset of cellular response pathways. A distinct assignment of single effects and their contributions to enhancing bioconversion efficiency, however, remains challenging. Current applications of nsPEF processing comprise microalgae, bacteria, and yeast biorefineries, but these endeavors are in their infancies with limitations associated with a lack of understanding of the underlying treatment mechanisms, an incomplete reporting, insufficient characterization, and control of processing parameters. The study aids in fostering the upsurge of nsPEF applications in the bio-based domain by providing a basis to gain a better understanding of cellular mechanisms underlying an nsPEF-based enhancement of cellular bioconversion efficiency and suggests best practice guidelines for nsPEF documentation for improved knowledge transfer. Better understanding and reporting of processes parameters and consequently improved process control could foster industrial-scale nsPEF realization and ultimately aid in perpetuating nsPEF applicability within the bio-based domain.
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Affiliation(s)
- Iris Haberkorn
- ETH Zürich, Laboratory of Sustainable Food Processing, Institute of Food, Nutrition and Health, Schmelzbergstrasse 9, 8092 Zürich, Switzerland.
| | - Lya Siegenthaler
- ETH Zürich, Laboratory of Sustainable Food Processing, Institute of Food, Nutrition and Health, Schmelzbergstrasse 9, 8092 Zürich, Switzerland.
| | | | - Lukas Neutsch
- ZHAW, Bioprocess Technology Research Group, Grüentalstrasse 14, 8820 Wädenswil, Switzerland.
| | - Alexander Mathys
- ETH Zürich, Laboratory of Sustainable Food Processing, Institute of Food, Nutrition and Health, Schmelzbergstrasse 9, 8092 Zürich, Switzerland.
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17
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Kaszler N, Benkő P, Bernula D, Szepesi Á, Fehér A, Gémes K. Polyamine Metabolism Is Involved in the Direct Regeneration of Shoots from Arabidopsis Lateral Root Primordia. PLANTS 2021; 10:plants10020305. [PMID: 33562616 PMCID: PMC7915173 DOI: 10.3390/plants10020305] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 12/31/2020] [Revised: 01/29/2021] [Accepted: 02/02/2021] [Indexed: 11/16/2022]
Abstract
Plants can be regenerated from various explants/tissues via de novo shoot meristem formation. Most of these regeneration pathways are indirect and involve callus formation. Besides plant hormones, the role of polyamines (PAs) has been implicated in these processes. Interestingly, the lateral root primordia (LRPs) of Arabidopsis can be directly converted to shoot meristems by exogenous cytokinin application. In this system, no callus formation takes place. We report that the level of PAs, especially that of spermidine (Spd), increased during meristem conversion and the application of exogenous Spd improved its efficiency. The high endogenous Spd level could be due to enhanced synthesis as indicated by the augmented relative expression of PA synthesis genes (AtADC1,2, AtSAMDC2,4, AtSPDS1,2) during the process. However, the effect of PAs on shoot meristem formation might also be dependent on their catabolism. The expression of Arabidopsis POLYAMINE OXIDASE 5 (AtPAO5) was shown to be specifically high during the process and its ectopic overexpression increased the LRP-to-shoot conversion efficiency. This was correlated with Spd accumulation in the roots and ROS accumulation in the converting LRPs. The potential ways how PAO5 may influence direct shoot organogenesis from Arabidopsis LRPs are discussed.
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Affiliation(s)
- Nikolett Kaszler
- Institute of Plant Biology, Biological Research Centre, Hungarian Academy of Sciences, 62. Temesvári krt, H-6726 Szeged, Hungary; (N.K.); (P.B.); (D.B.)
- Doctoral School of Biology, University of Szeged, 52. Közép fasor, H-6726 Szeged, Hungary
- Department of Plant Biology, University of Szeged, 52. Közép fasor, H-6726 Szeged, Hungary;
| | - Péter Benkő
- Institute of Plant Biology, Biological Research Centre, Hungarian Academy of Sciences, 62. Temesvári krt, H-6726 Szeged, Hungary; (N.K.); (P.B.); (D.B.)
- Doctoral School of Biology, University of Szeged, 52. Közép fasor, H-6726 Szeged, Hungary
- Department of Plant Biology, University of Szeged, 52. Közép fasor, H-6726 Szeged, Hungary;
| | - Dóra Bernula
- Institute of Plant Biology, Biological Research Centre, Hungarian Academy of Sciences, 62. Temesvári krt, H-6726 Szeged, Hungary; (N.K.); (P.B.); (D.B.)
- Doctoral School of Biology, University of Szeged, 52. Közép fasor, H-6726 Szeged, Hungary
- Department of Plant Biology, University of Szeged, 52. Közép fasor, H-6726 Szeged, Hungary;
| | - Ágnes Szepesi
- Department of Plant Biology, University of Szeged, 52. Közép fasor, H-6726 Szeged, Hungary;
| | - Attila Fehér
- Institute of Plant Biology, Biological Research Centre, Hungarian Academy of Sciences, 62. Temesvári krt, H-6726 Szeged, Hungary; (N.K.); (P.B.); (D.B.)
- Department of Plant Biology, University of Szeged, 52. Közép fasor, H-6726 Szeged, Hungary;
- Correspondence: author: (A.F.); (K.G.); Tel.: +36-62-546-962 (A.F.); +36-62-544-307 (K.G.)
| | - Katalin Gémes
- Institute of Plant Biology, Biological Research Centre, Hungarian Academy of Sciences, 62. Temesvári krt, H-6726 Szeged, Hungary; (N.K.); (P.B.); (D.B.)
- Department of Plant Biology, University of Szeged, 52. Közép fasor, H-6726 Szeged, Hungary;
- Correspondence: author: (A.F.); (K.G.); Tel.: +36-62-546-962 (A.F.); +36-62-544-307 (K.G.)
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18
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Goeckeritz C, Hollender CA. There is more to flowering than those DAM genes: the biology behind bloom in rosaceous fruit trees. CURRENT OPINION IN PLANT BIOLOGY 2021; 59:101995. [PMID: 33444911 DOI: 10.1016/j.pbi.2020.101995] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/01/2020] [Revised: 11/23/2020] [Accepted: 12/21/2020] [Indexed: 05/06/2023]
Abstract
The regulation of bloom time in deciduous fruit trees is an area of increasing interest due to the negative impact of climate change on fruit production. Although flower development has been well-studied in model species, there are many knowledge gaps about this process in perennial fruit trees, whose floral development spans the four seasons and includes many temperature-driven transitions. To develop solutions for minimizing crop loss, a comprehensive research strategy is needed to understand flower development and bloom time in deciduous fruit trees. This approach must incorporate genetic, physiological, and phenological strategies which include morphological and molecular analyses. Here, we describe key floral development events for rosaceae family fruit trees, highlight recent molecular and genetic discoveries, and discuss future directions for this field.
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Affiliation(s)
- Charity Goeckeritz
- Michigan State University Department of Horticulture, East Lansing, MI 48824, United States
| | - Courtney A Hollender
- Michigan State University Department of Horticulture, East Lansing, MI 48824, United States.
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19
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Mukherjee S. Cysteine modifications (oxPTM) and protein sulphenylation-mediated sulfenome expression in plants: evolutionary conserved signaling networks? PLANT SIGNALING & BEHAVIOR 2021; 16:1831792. [PMID: 33300450 PMCID: PMC7781837 DOI: 10.1080/15592324.2020.1831792] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/04/2023]
Abstract
Plant resilience to oxidative stress possibly operates through the restoration of intracellular redox milieu and the activity of various posttranslationally modified proteins. Among various modes of redox regulation operative in plants cys oxPTMs are brought about by the activity of reactive oxygen species (ROS), reactive nitrogen species (RNS), and hydrogen peroxide. Cysteine oxPTMs are capable of transducing ROS-mediated long-distance hormone signaling (ABA, JA, SA) in plants. S-sulphenylation is an intermediary modification en route to other oxidative states of cysteine. In silico analysis have revealed evolutionary conservation of certain S-sulphenylated proteins across human and plants. Further analysis of protein sulphenylation in plants should be extended to the functional follow-up studies followed by site-specific characterization and case-by-case validation of protein activity. The repertoire of physiological methods (fluorescent conjugates (dimedone) and yeast AP-1 (YAP1)-based genetic probes) in the recent past has been successful in the detection of sulphenylated proteins and other cysteine-based modifications in plants. In view of a better understanding of the sulfur-based redoxome it is necessary to update our timely progress on the methodological advancements for the detection of cysteine-based oxPTM. This substantiative information can extend our investigations on plant-environment interaction thus improving crop manipulation strategies. The simulation-based computational approach has emerged as a new method to determine the directive mechanism of cysteine oxidation in plants. Thus, sulfenome analysis in various plant systems might reflect as a pinnacle of plant redox biology in the future.
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Affiliation(s)
- Soumya Mukherjee
- Department of Botany, Jangipur College, University of Kalyani, West, Bengal, India
- CONTACT Soumya Mukherjee Department of Botany, Jangipur College, University of Kalyani, West, Bengal742213, India
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20
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Cheng G, Zhang L, Wei H, Wang H, Lu J, Yu S. Transcriptome Analysis Reveals a Gene Expression Pattern Associated with Fuzz Fiber Initiation Induced by High Temperature in Gossypium barbadense. Genes (Basel) 2020; 11:genes11091066. [PMID: 32927688 PMCID: PMC7565297 DOI: 10.3390/genes11091066] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/27/2020] [Revised: 09/02/2020] [Accepted: 09/03/2020] [Indexed: 11/27/2022] Open
Abstract
Gossypium barbadense is an important source of natural textile fibers, as is Gossypium hirsutum. Cotton fiber development is often affected by various environmental factors, such as abnormal temperature. However, little is known about the underlying mechanisms of temperature regulating the fuzz fiber initiation. In this study, we reveal that high temperatures (HT) accelerate fiber development, improve fiber quality, and induced fuzz initiation of a thermo-sensitive G. barbadense variety L7009. It was proved that fuzz initiation was inhibited by low temperature (LT), and 4 dpa was the stage most susceptible to temperature stress during the fuzz initiation period. A total of 43,826 differentially expressed genes (DEGs) were identified through comparative transcriptome analysis. Of these, 9667 were involved in fiber development and temperature response with 901 transcription factor genes and 189 genes related to plant hormone signal transduction. Further analysis of gene expression patterns revealed that 240 genes were potentially involved in fuzz initiation induced by high temperature. Functional annotation revealed that the candidate genes related to fuzz initiation were significantly involved in the asparagine biosynthetic process, cell wall biosynthesis, and stress response. The expression trends of sixteen genes randomly selected from the RNA-seq data were almost consistent with the results of qRT-PCR. Our study revealed several potential candidate genes and pathways related to fuzz initiation induced by high temperature. This provides a new view of temperature-induced tissue and organ development in Gossypium barbadense.
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Affiliation(s)
- Gongmin Cheng
- College of Agronomy, Northwest Agriculture and Forestry University, Yangling 712100, China;
- State Key Laboratory of Cotton Biology, Institute of Cotton Research, Chinese Academy of Agricultural Sciences, Anyang 455000, China; (L.Z.); (H.W.); (H.W.); (J.L.)
| | - Longyan Zhang
- State Key Laboratory of Cotton Biology, Institute of Cotton Research, Chinese Academy of Agricultural Sciences, Anyang 455000, China; (L.Z.); (H.W.); (H.W.); (J.L.)
- College of Agronomy, Hebei Agricultural University, Baoding 071001, China
| | - Hengling Wei
- State Key Laboratory of Cotton Biology, Institute of Cotton Research, Chinese Academy of Agricultural Sciences, Anyang 455000, China; (L.Z.); (H.W.); (H.W.); (J.L.)
| | - Hantao Wang
- State Key Laboratory of Cotton Biology, Institute of Cotton Research, Chinese Academy of Agricultural Sciences, Anyang 455000, China; (L.Z.); (H.W.); (H.W.); (J.L.)
| | - Jianhua Lu
- State Key Laboratory of Cotton Biology, Institute of Cotton Research, Chinese Academy of Agricultural Sciences, Anyang 455000, China; (L.Z.); (H.W.); (H.W.); (J.L.)
| | - Shuxun Yu
- College of Agronomy, Northwest Agriculture and Forestry University, Yangling 712100, China;
- State Key Laboratory of Cotton Biology, Institute of Cotton Research, Chinese Academy of Agricultural Sciences, Anyang 455000, China; (L.Z.); (H.W.); (H.W.); (J.L.)
- Correspondence: ; Tel.: +86-188-0372-9718
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21
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Inoculation of maize seeds with Pseudomonas putida leads to enhanced seedling growth in combination with modified regulation of miRNAs and antioxidant enzymes. Symbiosis 2020. [DOI: 10.1007/s13199-020-00703-x] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
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22
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The Arabidopsis SAFEGUARD1 suppresses singlet oxygen-induced stress responses by protecting grana margins. Proc Natl Acad Sci U S A 2020; 117:6918-6927. [PMID: 32161131 DOI: 10.1073/pnas.1918640117] [Citation(s) in RCA: 34] [Impact Index Per Article: 8.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022] Open
Abstract
Singlet oxygen (1O2), the major reactive oxygen species (ROS) produced in chloroplasts, has been demonstrated recently to be a highly versatile signal that induces various stress responses. In the fluorescent (flu) mutant, its release causes seedling lethality and inhibits mature plant growth. However, these drastic phenotypes are suppressed when EXECUTER1 (EX1) is absent in the flu ex1 double mutant. We identified SAFEGUARD1 (SAFE1) in a screen of ethyl methanesulfonate (EMS) mutagenized flu ex1 plants for suppressor mutants with a flu-like phenotype. In flu ex1 safe1, all 1O2-induced responses, including transcriptional rewiring of nuclear gene expression, return to levels, such as, or even higher than, those in flu Without SAFE1, grana margins (GMs) of chloroplast thylakoids (Thys) are specifically damaged upon 1O2 generation and associate with plastoglobules (PGs). SAFE1 is localized in the chloroplast stroma, and release of 1O2 induces SAFE1 degradation via chloroplast-originated vesicles. Our paper demonstrates that flu-produced 1O2 triggers an EX1-independent signaling pathway and proves that SAFE1 suppresses this signaling pathway by protecting GMs.
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Foyer CH, Baker A, Wright M, Sparkes IA, Mhamdi A, Schippers JHM, Van Breusegem F. On the move: redox-dependent protein relocation in plants. JOURNAL OF EXPERIMENTAL BOTANY 2020; 71:620-631. [PMID: 31421053 DOI: 10.1093/jxb/erz330] [Citation(s) in RCA: 39] [Impact Index Per Article: 9.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/25/2019] [Accepted: 07/01/2019] [Indexed: 05/04/2023]
Abstract
Compartmentation of proteins and processes is a defining feature of eukaryotic cells. The growth and development of organisms is critically dependent on the accurate sorting of proteins within cells. The mechanisms by which cytosol-synthesized proteins are delivered to the membranes and membrane compartments have been extensively characterized. However, the protein complement of any given compartment is not precisely fixed and some proteins can move between compartments in response to metabolic or environmental triggers. The mechanisms and processes that mediate such relocation events are largely uncharacterized. Many proteins can in addition perform multiple functions, catalysing alternative reactions or performing structural, non-enzymatic functions. These alternative functions can be equally important functions in each cellular compartment. Such proteins are generally not dual-targeted proteins in the classic sense of having targeting sequences that direct de novo synthesized proteins to specific cellular locations. We propose that redox post-translational modifications (PTMs) can control the compartmentation of many such proteins, including antioxidant and/or redox-associated enzymes.
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Affiliation(s)
- Christine H Foyer
- School of Biosciences, College of Life and Environmental Sciences, University of Birmingham, Edgbaston, UK
- School of Biology, Faculty of Biological Sciences, University of Leeds, Leeds, UK
| | - Alison Baker
- School of Molecular and Cellular Biology, Faculty of Biological Sciences, University of Leeds, Leeds, UK
- Centre for Plant Sciences, University of Leeds, Leeds, UK
| | - Megan Wright
- The Astbury Centre for Structural Biology, University of Leeds, Leeds, UK
- School of Chemistry, University of Leeds, Leeds, UK
| | - Imogen A Sparkes
- School of Biological Sciences, University of Bristol, Bristol, UK
| | - Amna Mhamdi
- VIB-UGent Center for Plant Systems Biology, Ghent University, Ghent, Belgium
- Department of Plant Biotechnology and Bioinformatics, Ghent University, Ghent, Belgium
| | - Jos H M Schippers
- Institute of Biology I, RWTH Aachen University, Aachen, Germany
- Department of Molecular Genetics, Leibniz Institute of Plant Genetics and Crop Plant Research (IPK), Gatersleben, Germany
| | - Frank Van Breusegem
- VIB-UGent Center for Plant Systems Biology, Ghent University, Ghent, Belgium
- Department of Plant Biotechnology and Bioinformatics, Ghent University, Ghent, Belgium
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Uji T, Endo H, Mizuta H. Sexual Reproduction via a 1-Aminocyclopropane-1-Carboxylic Acid-Dependent Pathway Through Redox Modulation in the Marine Red Alga Pyropia yezoensis (Rhodophyta). FRONTIERS IN PLANT SCIENCE 2020; 11:60. [PMID: 32117396 PMCID: PMC7028691 DOI: 10.3389/fpls.2020.00060] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/26/2019] [Accepted: 01/16/2020] [Indexed: 05/07/2023]
Abstract
The transition from the vegetative to sexually reproductive phase is the most dynamic change to occur during a plant's life cycle. In the present study, we showed that the ethylene precursor 1-aminocylopropane-1-carboxylic acid (ACC) induces sexual reproduction in the marine red alga Pyropia yezoensis independently from ethylene. Exogenous application of ACC, which contains a three membered carbocyclic ring, promoted the formation of spermatia and carporspores in gametophytes, whereas ethephon, an ethylene-releasing compound, did not stimulate sexual reproduction. In addition, an ACC analog, 1-aminocyclobutane-1-carboxylic acid (ACBC), which contains a four membered carbocyclic ring, promoted sexual reproduction and enhanced tolerance to oxidative stress in the same manner as ACC, but 1-aminocyclopentane-1-carboxylic acid (cycloleucine; which contains a cyclopentane ring) did not. The application of ACC increased the generation of reactive oxygen species (ROS) and induced the expression of PyRboh gene encoding NADPH oxidase. ACC also stimulated the synthesis of ascorbate (AsA) by inducing transcripts of PyGalLDH, which encodes galactono-1,4-lactone dehydrogenase, the catalyst for the final enzymatic step of the AsA biosynthetic pathway. Conversely, ACC caused a decrease in the synthesis of glutathione (GSH) by repressing transcripts of PyGCL, which encodes glutamate cysteine ligase, the catalyst for the rate-limiting step in the formation of GSH. These results suggest a possible role played by ACC as a signaling molecule independent from ethylene in the regulation of sexual reproduction through alterations to the redox state in P. yezoensis.
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25
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Qi W, Wang F, Ma L, Qi Z, Liu S, Chen C, Wu J, Wang P, Yang C, Wu Y, Sun W. Physiological and Biochemical Mechanisms and Cytology of Cold Tolerance in Brassica napus. FRONTIERS IN PLANT SCIENCE 2020; 11:1241. [PMID: 32903421 PMCID: PMC7434931 DOI: 10.3389/fpls.2020.01241] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/17/2019] [Accepted: 07/28/2020] [Indexed: 05/18/2023]
Abstract
Cold damage has negatively impacted the yield, growth and quality of the edible cooking oil in Northern China and Brassica napus L.(rapeseed) planting areas decreased because of cold damage. In the present study we analyzed two Brassica napus cultivars of 16NTS309 (highly resistant to cold damage) and Tianyou2238 (cold sensitive) from Gansu Province, China using physiological, biochemical and cytological methods to investigate the plant's response to cold stress. The results showed that cold stress caused seedling dehydration, and the contents of malondialdehyde (MDA), relative electrolyte leakage and O2 - and H2O2 were increased in Tianyou2238 than 16NTS309 under cold stress at 4°C for 48 h, as well as the proline, soluble protein and soluble sugars markedly accumulated, and antioxidant enzymes of peroxidase (POD), superoxide dismutase (SOD), and catalase (CAT) were higher in 16NTS309 compared with in Tianyou2238, which play key roles in prevention of cell damage. After exposure to cold stress, the accumulation of the blue formazan precipitate and reddish brown precipitate indicated that O2 - and H2O2, respectively, were produced in the root, stem, and leaf were higher than under non-cold conditions. Contents of O2 - and H2O2 in cultivar Tianyou2238 were higher than 16NTS309, this is consistent with the phenotypic result. To understand the specific distribution of O2 - in the sub-cellular, we found that in both cultivars O2 - signals were distributed mainly in cambium tissue, meristematic cells, mesophyll cytoplasm, and surrounding the cell walls of root, stem, leaves, and leaf vein by morphoanatomical analysis, but the quantities varied. Cold stress also triggered obvious ultrastructural alterations in leaf mesophyll of Tianyou2238 including the damage of membrane system, destruction of chloroplast and swelling of mitochondria. This study are useful to provide new insights about the physiological and biochemical mechanisms and cytology associated with the response of B. napus to cold stress for use in breeding cold-resistant varieties.
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Affiliation(s)
- Weiliang Qi
- College of Agronomy, Gansu Agricultural University, Lanzhou, China
- Gansu Provincial Key Laboratory of Arid land Crop Science, Gansu Agricultural University, Lanzhou, China
- Key Laboratory of Crop Genetics Improvement and Germplasm Enhancement of Gansu Province, Lanzhou, China
- College of Chemistry and Life Science, Chengdu Normal University, Chengdu, China
| | - Fei Wang
- College of Chemistry and Life Science, Chengdu Normal University, Chengdu, China
| | - Li Ma
- College of Agronomy, Gansu Agricultural University, Lanzhou, China
- Gansu Provincial Key Laboratory of Arid land Crop Science, Gansu Agricultural University, Lanzhou, China
- Key Laboratory of Crop Genetics Improvement and Germplasm Enhancement of Gansu Province, Lanzhou, China
| | - Ze Qi
- College of Metallurgy, Northeastern University, Shenyang, China
| | - Songqing Liu
- College of Chemistry and Life Science, Chengdu Normal University, Chengdu, China
| | - Cun Chen
- College of Chemistry and Life Science, Chengdu Normal University, Chengdu, China
| | - Junyan Wu
- College of Agronomy, Gansu Agricultural University, Lanzhou, China
- Gansu Provincial Key Laboratory of Arid land Crop Science, Gansu Agricultural University, Lanzhou, China
- Key Laboratory of Crop Genetics Improvement and Germplasm Enhancement of Gansu Province, Lanzhou, China
| | - Ping Wang
- College of Chemistry and Life Science, Chengdu Normal University, Chengdu, China
| | - Cairong Yang
- College of Chemistry and Life Science, Chengdu Normal University, Chengdu, China
| | - Yong Wu
- College of Chemistry and Life Science, Chengdu Normal University, Chengdu, China
| | - Wancang Sun
- College of Agronomy, Gansu Agricultural University, Lanzhou, China
- Gansu Provincial Key Laboratory of Arid land Crop Science, Gansu Agricultural University, Lanzhou, China
- Key Laboratory of Crop Genetics Improvement and Germplasm Enhancement of Gansu Province, Lanzhou, China
- *Correspondence: Wancang Sun,
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Huang S, Wang LL, Xue NN, Li C, Guo HH, Ren TK, Zhan Y, Li WB, Zhang J, Chen XG, Han YX, Zhang JL, Jiang JD. Chlorogenic acid effectively treats cancers through induction of cancer cell differentiation. Theranostics 2019; 9:6745-6763. [PMID: 31660066 PMCID: PMC6815948 DOI: 10.7150/thno.34674] [Citation(s) in RCA: 81] [Impact Index Per Article: 16.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/06/2019] [Accepted: 07/31/2019] [Indexed: 02/06/2023] Open
Abstract
Rationale: Inducing cancer differentiation is a promising approach to treat cancer. Here, we identified chlorogenic acid (CA), a potential differentiation inducer, for cancer therapy, and elucidated the molecular mechanisms underlying its differentiation-inducing effects on cancer cells. Methods: Cancer cell differentiation was investigated by measuring malignant behavior, including growth rate, invasion/migration, morphological change, maturation, and ATP production. Gene expression was analyzed by microarray analysis, qRT-PCR, and protein measurement, and molecular biology techniques were employed for mechanistic studies. LC/MS analysis was the method of choice for chemical detection. Finally, the anticancer effect of CA was evaluated both in vitro and in vivo. Results: Cancer cells treated with CA showed reduced proliferation rate, migration/invasion ability, and mitochondrial ATP production. Treating cancer cells with CA resulted in elevated SUMO1 expression through acting on its 3'UTR and stabilizing the mRNA. The increased SUMO1 caused c-Myc sumoylation, miR-17 family downregulation, and p21 upregulation leading to G0/G1 arrest and maturation phenotype. CA altered the expression of differentiation-related genes in cancer cells but not in normal cells. It inhibited hepatoma and lung cancer growth in tumor-bearing mice and prevented new tumor development in naïve mice. In glioma cells, CA increased expression of specific differentiation biomarkers Tuj1 and GFAP inducing differentiation and reducing sphere formation. The therapeutic efficacy of CA in glioma cells was comparable to that of temozolomide. CA was detectable both in the blood and brain when administered intraperitoneally in animals. Most importantly, CA was safe even at very high doses. Conclusion: CA might be a safe and effective differentiation-inducer for cancer therapy. “Educating” cancer cells to differentiate, rather than killing them, could be a novel therapeutic strategy for cancer.
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Zaffagnini M, Fermani S, Marchand CH, Costa A, Sparla F, Rouhier N, Geigenberger P, Lemaire SD, Trost P. Redox Homeostasis in Photosynthetic Organisms: Novel and Established Thiol-Based Molecular Mechanisms. Antioxid Redox Signal 2019; 31:155-210. [PMID: 30499304 DOI: 10.1089/ars.2018.7617] [Citation(s) in RCA: 71] [Impact Index Per Article: 14.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
Abstract
Significance: Redox homeostasis consists of an intricate network of reactions in which reactive molecular species, redox modifications, and redox proteins act in concert to allow both physiological responses and adaptation to stress conditions. Recent Advances: This review highlights established and novel thiol-based regulatory pathways underlying the functional facets and significance of redox biology in photosynthetic organisms. In the last decades, the field of redox regulation has largely expanded and this work is aimed at giving the right credit to the importance of thiol-based regulatory and signaling mechanisms in plants. Critical Issues: This cannot be all-encompassing, but is intended to provide a comprehensive overview on the structural/molecular mechanisms governing the most relevant thiol switching modifications with emphasis on the large genetic and functional diversity of redox controllers (i.e., redoxins). We also summarize the different proteomic-based approaches aimed at investigating the dynamics of redox modifications and the recent evidence that extends the possibility to monitor the cellular redox state in vivo. The physiological relevance of redox transitions is discussed based on reverse genetic studies confirming the importance of redox homeostasis in plant growth, development, and stress responses. Future Directions: In conclusion, we can firmly assume that redox biology has acquired an established significance that virtually infiltrates all aspects of plant physiology.
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Affiliation(s)
- Mirko Zaffagnini
- 1 Department of Pharmacy and Biotechnology and University of Bologna, Bologna, Italy
| | - Simona Fermani
- 2 Department of Chemistry Giacomo Ciamician, University of Bologna, Bologna, Italy
| | - Christophe H Marchand
- 3 Laboratoire de Biologie Moléculaire et Cellulaire des Eucaryotes, UMR8226, Centre National de la Recherche Scientifique, Institut de Biologie Physico-Chimique, Sorbonne Université, Paris, France
| | - Alex Costa
- 4 Department of Biosciences, University of Milan, Milan, Italy
| | - Francesca Sparla
- 1 Department of Pharmacy and Biotechnology and University of Bologna, Bologna, Italy
| | | | - Peter Geigenberger
- 6 Department Biologie I, Ludwig-Maximilians-Universität München, LMU Biozentrum, Martinsried, Germany
| | - Stéphane D Lemaire
- 3 Laboratoire de Biologie Moléculaire et Cellulaire des Eucaryotes, UMR8226, Centre National de la Recherche Scientifique, Institut de Biologie Physico-Chimique, Sorbonne Université, Paris, France
| | - Paolo Trost
- 1 Department of Pharmacy and Biotechnology and University of Bologna, Bologna, Italy
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Horváth E, Bela K, Holinka B, Riyazuddin R, Gallé Á, Hajnal Á, Hurton Á, Fehér A, Csiszár J. The Arabidopsis glutathione transferases, AtGSTF8 and AtGSTU19 are involved in the maintenance of root redox homeostasis affecting meristem size and salt stress sensitivity. PLANT SCIENCE : AN INTERNATIONAL JOURNAL OF EXPERIMENTAL PLANT BIOLOGY 2019; 283:366-374. [PMID: 31128707 DOI: 10.1016/j.plantsci.2019.02.005] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/20/2018] [Revised: 02/05/2019] [Accepted: 02/06/2019] [Indexed: 05/28/2023]
Abstract
The tau (U) and phi (F) classes of glutathione transferase (GST) enzymes reduce the glutathione (GSH) pool using GSH as a co-substrate, thus influence numerous redox-dependent processes including hormonal and stress responses. We performed detailed analysis of the redox potential and reactive oxygen species levels in longitudinal zones of 7-day-old roots of Arabidopsis thaliana L. Col-0 wild type and Atsgtf8 and Atgstu19 insertional mutants. Using redox-sensitive cytosolic green fluorescent protein (roGFP2) the redox status of the meristematic, transition, and elongation zones was determined under control and salt stress (3-hour of 75 or 150 mM NaCl treatment) conditions. The Atgstu19 mutant had the most oxidized redox status in all root zones throughout the experiments. Using fluorescent dyes significantly higher superoxide radical (O2-) levels was detected in both Atgst mutants than in the Col-0 control. Salt treatment resulted in the highest O2- increase in the Atgstf8 root, while the amount of H2O2 elevated most in the case of Atgstu19. Moreover, vitality decreased in Atgstu19 roots more than in wild type under salt stress. Our results indicate that AtGSTF8 and especially the AtGSTU19 proteins function in the root fine-tuning the redox homeostasis both under control and salt stress conditions.
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Affiliation(s)
- Edit Horváth
- Institute of Plant Biology, Biological Research Centre of HAS, Temesvári krt. 62., H-6726, Szeged, Hungary.
| | - Krisztina Bela
- Department of Plant Biology, Faculty of Science and Informatics, University of Szeged, Közép fasor 52., H-6726, Szeged, Hungary
| | - Botond Holinka
- Department of Plant Biology, Faculty of Science and Informatics, University of Szeged, Közép fasor 52., H-6726, Szeged, Hungary
| | - Riyazuddin Riyazuddin
- Department of Plant Biology, Faculty of Science and Informatics, University of Szeged, Közép fasor 52., H-6726, Szeged, Hungary; Doctoral School in Biology, Faculty of Science and Informatics, University of Szeged, Szeged, Hungary
| | - Ágnes Gallé
- Department of Plant Biology, Faculty of Science and Informatics, University of Szeged, Közép fasor 52., H-6726, Szeged, Hungary
| | - Ádám Hajnal
- Department of Plant Biology, Faculty of Science and Informatics, University of Szeged, Közép fasor 52., H-6726, Szeged, Hungary
| | - Ágnes Hurton
- Department of Plant Biology, Faculty of Science and Informatics, University of Szeged, Közép fasor 52., H-6726, Szeged, Hungary
| | - Attila Fehér
- Institute of Plant Biology, Biological Research Centre of HAS, Temesvári krt. 62., H-6726, Szeged, Hungary; Department of Plant Biology, Faculty of Science and Informatics, University of Szeged, Közép fasor 52., H-6726, Szeged, Hungary
| | - Jolán Csiszár
- Department of Plant Biology, Faculty of Science and Informatics, University of Szeged, Közép fasor 52., H-6726, Szeged, Hungary
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Nitrate Reductase-Mediated Nitric Oxide Regulates the Leaf Shape in Arabidopsis by Mediating the Homeostasis of Reactive Oxygen Species. Int J Mol Sci 2019; 20:ijms20092235. [PMID: 31067654 PMCID: PMC6539879 DOI: 10.3390/ijms20092235] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/16/2019] [Revised: 05/01/2019] [Accepted: 05/03/2019] [Indexed: 12/30/2022] Open
Abstract
As a gaseous biological signaling molecule, nitric oxide (NO) regulates many physiological processes in plants. Over the last decades, this low molecular weight compound has been identified as a key signaling molecule to regulate plant stress responses, and also plays an important role in plant development. However, elucidation of the molecular mechanisms for NO in leaf development has so far been limited due to a lack of mutant resources. Here, we employed the NO-deficient mutant nia1nia2 to examine the role of NO in leaf development. We have found that nia1nia2 mutant plants displayed very different leaf phenotypes as compared to wild type Col-0. Further studies have shown that reactive oxygen species (ROS) levels are higher in nia1nia2 mutant plants. Interestingly, ROS-related enzymes ascorbate peroxidase (APX), catalases (CAT), and peroxidases (POD) have shown decreases in their activities. Our transcriptome data have revealed that the ROS synthesis gene RBOHD was enhanced in nia1nia2 mutants and the photosynthesis-related pathway was impaired, which suggests that NO is required for chloroplast development and leaf development. Together, these results imply that NO plays a significant role in plant leaf development by regulating ROS homeostasis.
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30
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Nahirñak V, Rivarola M, Almasia NI, Barrios Barón MP, Hopp HE, Vile D, Paniego N, Vazquez Rovere C. Snakin-1 affects reactive oxygen species and ascorbic acid levels and hormone balance in potato. PLoS One 2019; 14:e0214165. [PMID: 30909287 PMCID: PMC6433472 DOI: 10.1371/journal.pone.0214165] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/25/2019] [Accepted: 03/08/2019] [Indexed: 12/19/2022] Open
Abstract
Snakin-1 is a member of the Solanum tuberosum Snakin/GASA family. We previously demonstrated that Snakin-1 is involved in plant defense to pathogens as well as in plant growth and development, but its mechanism of action has not been completely elucidated yet. Here, we showed that leaves of Snakin-1 silenced potato transgenic plants exhibited increased levels of reactive oxygen species and significantly reduced content of ascorbic acid. Furthermore, Snakin-1 silencing enhanced salicylic acid content in accordance with an increased expression of SA-inducible PRs genes. Interestingly, gibberellic acid levels were also enhanced and transcriptome analysis revealed that a large number of genes related to sterol biosynthesis were downregulated in these silenced lines. Moreover, we demonstrated that Snakin-1 directly interacts with StDIM/DWF1, an enzyme involved in plant sterols biosynthesis. Additionally, the analysis of the expression pattern of PStSN1::GUS in potato showed that Snakin-1 is present mainly in young tissues associated with active growth and cell division zones. Our comprehensive analysis of Snakin-1 silenced lines demonstrated for the first time in potato that Snakin-1 plays a role in redox balance and participates in a complex crosstalk among different hormones.
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Affiliation(s)
- Vanesa Nahirñak
- Instituto de Biotecnología, CICVyA, CNIA, Instituto Nacional de Tecnología Agropecuaria (INTA), Buenos Aires, Argentina
| | - Máximo Rivarola
- Instituto de Biotecnología, CICVyA, CNIA, Instituto Nacional de Tecnología Agropecuaria (INTA), Buenos Aires, Argentina
- Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET), Buenos Aires, Argentina
| | - Natalia Inés Almasia
- Instituto de Biotecnología, CICVyA, CNIA, Instituto Nacional de Tecnología Agropecuaria (INTA), Buenos Aires, Argentina
| | | | - Horacio Esteban Hopp
- Instituto de Biotecnología, CICVyA, CNIA, Instituto Nacional de Tecnología Agropecuaria (INTA), Buenos Aires, Argentina
| | - Denis Vile
- LEPSE, Univ Montpellier, INRA, SupAgro, Montpellier, France
| | - Norma Paniego
- Instituto de Biotecnología, CICVyA, CNIA, Instituto Nacional de Tecnología Agropecuaria (INTA), Buenos Aires, Argentina
- Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET), Buenos Aires, Argentina
| | - Cecilia Vazquez Rovere
- Instituto de Biotecnología, CICVyA, CNIA, Instituto Nacional de Tecnología Agropecuaria (INTA), Buenos Aires, Argentina
- Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET), Buenos Aires, Argentina
- INTA LABINTEX Agropolis International, Montpellier, France
- * E-mail:
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31
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Ruiz‐May E, Segura‐Cabrera A, Elizalde‐Contreras JM, Shannon LM, Loyola‐Vargas VM. A recent advance in the intracellular and extracellular redox post‐translational modification of proteins in plants. J Mol Recognit 2018; 32:e2754. [DOI: 10.1002/jmr.2754] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/25/2018] [Revised: 06/08/2018] [Accepted: 06/14/2018] [Indexed: 02/01/2023]
Affiliation(s)
- Eliel Ruiz‐May
- Red de Estudios Moleculares AvanzadosInstituto de Ecología A. C., Cluster BioMimic® Xalapa Veracruz Mexico
| | - Aldo Segura‐Cabrera
- European Molecular Biology LaboratoryEuropean Bioinformatics Institute, Wellcome Genome Campus Hinxton Cambridgeshire UK
| | - Jose M. Elizalde‐Contreras
- Red de Estudios Moleculares AvanzadosInstituto de Ecología A. C., Cluster BioMimic® Xalapa Veracruz Mexico
| | - Laura M. Shannon
- Department of Horticultural ScienceUniversity of Minnesota Saint Paul MN USA
| | - Víctor M. Loyola‐Vargas
- Unidad de Bioquímica y Biología Molecular de PlantasCentro de Investigación Científica de Yucatán Mérida Yucatán Mexico
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32
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Wang H, Shabala L, Zhou M, Shabala S. Hydrogen Peroxide-Induced Root Ca 2+ and K⁺ Fluxes Correlate with Salt Tolerance in Cereals: Towards the Cell-Based Phenotyping. Int J Mol Sci 2018; 19:E702. [PMID: 29494514 PMCID: PMC5877563 DOI: 10.3390/ijms19030702] [Citation(s) in RCA: 26] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/24/2018] [Revised: 02/16/2018] [Accepted: 02/22/2018] [Indexed: 12/25/2022] Open
Abstract
Salinity stress-induced production of reactive oxygen species (ROS) and associated oxidative damage is one of the major factors limiting crop production in saline soils. However, the causal link between ROS production and stress tolerance is not as straightforward as one may expect, as ROS may also play an important signaling role in plant adaptive responses. In this study, the causal relationship between salinity and oxidative stress tolerance in two cereal crops-barley (Hordeum vulgare) and wheat (Triticum aestivum)-was investigated by measuring the magnitude of ROS-induced net K⁺ and Ca2+ fluxes from various root tissues and correlating them with overall whole-plant responses to salinity. We have found that the association between flux responses to oxidative stress and salinity stress tolerance was highly tissue specific, and was also dependent on the type of ROS applied. No correlation was found between root responses to hydroxyl radicals and the salinity tolerance. However, when oxidative stress was administered via H₂O₂ treatment, a significant positive correlation was found for the magnitude of ROS-induced K⁺ efflux and Ca2+ uptake in barley and the overall salinity stress tolerance, but only for mature zone and not the root apex. The same trends were found for wheat. These results indicate high tissue specificity of root ion fluxes response to ROS and suggest that measuring the magnitude of H₂O₂-induced net K⁺ and Ca2+ fluxes from mature root zone may be used as a tool for cell-based phenotyping in breeding programs aimed to improve salinity stress tolerance in cereals.
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Affiliation(s)
- Haiyang Wang
- School of Land and Food, University of Tasmania, Hobart, Tasmania 7001, Australia.
| | - Lana Shabala
- School of Land and Food, University of Tasmania, Hobart, Tasmania 7001, Australia.
| | - Meixue Zhou
- School of Land and Food, University of Tasmania, Hobart, Tasmania 7001, Australia.
| | - Sergey Shabala
- School of Land and Food, University of Tasmania, Hobart, Tasmania 7001, Australia.
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33
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Dai C, Lee Y, Lee IC, Nam HG, Kwak JM. Calmodulin 1 Regulates Senescence and ABA Response in Arabidopsis. FRONTIERS IN PLANT SCIENCE 2018; 9:803. [PMID: 30013580 PMCID: PMC6036150 DOI: 10.3389/fpls.2018.00803] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/05/2018] [Accepted: 05/25/2018] [Indexed: 05/18/2023]
Abstract
Cellular calcium acts as a second messenger and regulates diverse developmental events and stress responses. Cytosolic calcium has long been considered as an important regulator of senescence, however, the role of Ca2+ in plant senescence has remained elusive. Here we show that the Calmodulin 1 (CaM1) gene, which encodes Ca2+-binding protein calmodulin 1, positively regulates leaf senescence in Arabidopsis. Yellowing of leaves, accumulation of reactive oxygen species (ROS), and expression of the senescence-associated gene 12 (SAG12) were significantly enhanced in CaM1 overexpression plants. In contrast, abscisic acid (ABA)-triggered ROS production and stomatal closure were reduced in amiRNA-CaM1 plants. We found a positive-feedback regulation loop among three signaling components, CaM1, RPK1, and RbohF, which physically associate with each other. RPK1 positively regulates the expression of the CaM1 gene, and the CaM1 protein, in turn, up-regulates RbohF gene expression. Interestingly, the expression of CaM1 was down-regulated in rbohD, rbohF, and rbohD/F mutants. We show that CaM1 positively regulates ROS production, leaf senescence, and ABA response in Arabidopsis.
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Affiliation(s)
- Cheng Dai
- College of Plant Science and Technology, Huazhong Agricultural University, Wuhan, China
- *Correspondence: Cheng Dai, June M. Kwak,
| | - Yuree Lee
- Center for Plant Aging Research, Institute for Basic Science, Daegu, South Korea
| | - In C. Lee
- Center for Plant Aging Research, Institute for Basic Science, Daegu, South Korea
| | - Hong G. Nam
- Center for Plant Aging Research, Institute for Basic Science, Daegu, South Korea
- Department of New Biology, Daegu Gyeongbuk Institute of Science and Technology, Daegu, South Korea
| | - June M. Kwak
- Center for Plant Aging Research, Institute for Basic Science, Daegu, South Korea
- Department of New Biology, Daegu Gyeongbuk Institute of Science and Technology, Daegu, South Korea
- *Correspondence: Cheng Dai, June M. Kwak,
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Zeng J, Dong Z, Wu H, Tian Z, Zhao Z. Redox regulation of plant stem cell fate. EMBO J 2017; 36:2844-2855. [PMID: 28838936 DOI: 10.15252/embj.201695955] [Citation(s) in RCA: 138] [Impact Index Per Article: 19.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/25/2016] [Revised: 07/12/2017] [Accepted: 07/28/2017] [Indexed: 11/09/2022] Open
Abstract
Despite the importance of stem cells in plant and animal development, the common mechanisms of stem cell maintenance in both systems have remained elusive. Recently, the importance of hydrogen peroxide (H2O2) signaling in priming stem cell differentiation has been extensively studied in animals. Here, we show that different forms of reactive oxygen species (ROS) have antagonistic roles in plant stem cell regulation, which were established by distinct spatiotemporal patterns of ROS-metabolizing enzymes. The superoxide anion (O2·-) is markedly enriched in stem cells to activate WUSCHEL and maintain stemness, whereas H2O2 is more abundant in the differentiating peripheral zone to promote stem cell differentiation. Moreover, H2O2 negatively regulates O2·- biosynthesis in stem cells, and increasing H2O2 levels or scavenging O2·- leads to the termination of stem cells. Our results provide a mechanistic framework for ROS-mediated control of plant stem cell fate and demonstrate that the balance between O2·- and H2O2 is key to stem cell maintenance and differentiation.
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Affiliation(s)
- Jian Zeng
- School of Life Sciences, University of Science and Technology of China, Hefei, China
| | - Zhicheng Dong
- South China Botanical Garden, Chinese Academy of Sciences, Guangzhou, China
| | - Haijun Wu
- School of Life Sciences, University of Science and Technology of China, Hefei, China
| | - Zhaoxia Tian
- School of Life Sciences, University of Science and Technology of China, Hefei, China
| | - Zhong Zhao
- School of Life Sciences, University of Science and Technology of China, Hefei, China
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35
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Wang M, Schoettner M, Xu S, Paetz C, Wilde J, Baldwin IT, Groten K. Catechol, a major component of smoke, influences primary root growth and root hair elongation through reactive oxygen species-mediated redox signaling. THE NEW PHYTOLOGIST 2017; 213:1755-1770. [PMID: 27878986 DOI: 10.1111/nph.14317] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/03/2016] [Accepted: 09/29/2016] [Indexed: 06/06/2023]
Abstract
Nicotiana attenuata germinates from long-lived seedbanks in native soils after fires. Although smoke signals have been known to break seed dormancy, whether they also affect seedling establishment and root development remains unclear. In order to test this, seedlings were treated with smoke solutions. Seedlings responded in a dose-dependent manner with significantly increased primary root lengths, due mainly to longitudinal cell elongation, increased numbers of lateral roots and impaired root hair development. Bioassay-driven fractionations and NMR were used to identify catechol as the main active compound for the smoke-induced root phenotype. The transcriptome analysis revealed that mainly genes related to auxin biosynthesis and redox homeostasis were altered after catechol treatment. However, histochemical analyses of reactive oxygen species (ROS) and the inability of auxin applications to rescue the phenotype clearly indicated that highly localized changes in the root's redox-status, rather than in levels of auxin, are the primary effector. Moreover, H2 O2 application rescued the phenotype in a dose-dependent manner. Chemical cues in smoke not only initiate seed germination, but also influence seedling root growth; understanding how these cues work provides new insights into the molecular mechanisms by which plants adapt to post-fire environments.
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Affiliation(s)
- Ming Wang
- Department of Molecular Ecology, Max Planck Institute for Chemical Ecology, Hans-Knoell-Str. 8, 07745, Jena, Germany
| | - Matthias Schoettner
- Department of Molecular Ecology, Max Planck Institute for Chemical Ecology, Hans-Knoell-Str. 8, 07745, Jena, Germany
| | - Shuqing Xu
- Department of Molecular Ecology, Max Planck Institute for Chemical Ecology, Hans-Knoell-Str. 8, 07745, Jena, Germany
| | - Christian Paetz
- NMR Group, Max Planck Institute for Chemical Ecology, Hans-Knoell-Str. 8, 07745, Jena, Germany
| | - Julia Wilde
- Department of Molecular Ecology, Max Planck Institute for Chemical Ecology, Hans-Knoell-Str. 8, 07745, Jena, Germany
| | - Ian T Baldwin
- Department of Molecular Ecology, Max Planck Institute for Chemical Ecology, Hans-Knoell-Str. 8, 07745, Jena, Germany
| | - Karin Groten
- Department of Molecular Ecology, Max Planck Institute for Chemical Ecology, Hans-Knoell-Str. 8, 07745, Jena, Germany
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Quon T, Lampugnani ER, Smyth DR. PETAL LOSS and ROXY1 Interact to Limit Growth Within and between Sepals But to Promote Petal Initiation in Arabidopsis thaliana. FRONTIERS IN PLANT SCIENCE 2017; 8:152. [PMID: 28228771 PMCID: PMC5296375 DOI: 10.3389/fpls.2017.00152] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/07/2016] [Accepted: 01/25/2017] [Indexed: 05/28/2023]
Abstract
The activity of genes controlling organ development may be associated with the redox state of subregions within the meristem. Glutaredoxins react to the level of oxidative potential and can reduce cysteine dithiols, in some cases to activate specific transcription factors. In Arabidopsis, loss of function of the glutaredoxin ROXY1 or the trihelix transcription factor PETAL LOSS (PTL) each results in reduced numbers of petals. Here, genetic studies have revealed that loss of petals in ptl mutant plants depends on ROXY1 function. The two genes also act together to restrain stamen-identifying C function from entering the outer whorls. On the other hand, they suppress growth between sepals and in sepal margins, with ROXY1 action partially redundant to that of PTL. Genetic interactions with aux1 mutations indicate that auxin activity is reduced in the petal whorl of roxy1 mutants as in ptl mutants. However, it is apparently increased in the sepal whorl of triple mutants associated with the ectopic outgrowth of sepal margins, and of finger-like extensions of inter-sepal zones that in 20% of cases are topped with bunches of ectopic sepals. These interactions may be indirect, although PTL and ROXY1 proteins can interact directly when co-expressed in a transient assay. Changes of conserved cysteines within PTL to similar amino acids that cannot be oxidized did not block its function. It may be in some cases that under reducing conditions ROXY1 binds PTL and activates it by reducing specific conserved cysteines, thus resulting in growth suppression.
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37
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Kisselev PA, Panibrat OV, Sysa AR, Anisovich MV, Zhabinskii VN, Khripach VA. Flow-cytometric analysis of reactive oxygen species in cancer cells under treatment with brassinosteroids. Steroids 2017; 117:11-15. [PMID: 27343978 DOI: 10.1016/j.steroids.2016.06.010] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/02/2016] [Revised: 06/14/2016] [Accepted: 06/20/2016] [Indexed: 12/19/2022]
Abstract
To explore the underlying mechanism of cancer cell growth inhibition by brassinosteroids (BS), reactive oxygen species (ROS) generation under treatment with 28-homocastasterone and its synthetic derivatives (22S,23S)-28-homocastasterone was measured in A549 human lung adenocarcinoma cells. BS induced ROS generation in A549 cells and their growth in a time and dose-dependent manner. The maximal effect was observed for (22S,23S)-28-homocastasterone which at 30μM concentration showed a 6-fold increase of ROS generation in comparison with the control.
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Affiliation(s)
- Pyotr A Kisselev
- Institute of Bioorganic Chemistry, National Academy of Sciences of Belarus, Kuprevich str., 5/2, 220141 Minsk, Belarus
| | - Olesya V Panibrat
- Institute of Bioorganic Chemistry, National Academy of Sciences of Belarus, Kuprevich str., 5/2, 220141 Minsk, Belarus
| | - Aliaksei R Sysa
- Institute of Bioorganic Chemistry, National Academy of Sciences of Belarus, Kuprevich str., 5/2, 220141 Minsk, Belarus
| | - Marina V Anisovich
- Institute of Bioorganic Chemistry, National Academy of Sciences of Belarus, Kuprevich str., 5/2, 220141 Minsk, Belarus
| | - Vladimir N Zhabinskii
- Institute of Bioorganic Chemistry, National Academy of Sciences of Belarus, Kuprevich str., 5/2, 220141 Minsk, Belarus.
| | - Vladimir A Khripach
- Institute of Bioorganic Chemistry, National Academy of Sciences of Belarus, Kuprevich str., 5/2, 220141 Minsk, Belarus
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Mittler R. ROS Are Good. TRENDS IN PLANT SCIENCE 2017; 22:11-19. [PMID: 27666517 DOI: 10.1016/j.tplants.2016.08.002] [Citation(s) in RCA: 1469] [Impact Index Per Article: 209.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/17/2016] [Revised: 07/29/2016] [Accepted: 08/07/2016] [Indexed: 05/17/2023]
Abstract
Reactive oxygen species (ROS) are thought to play a dual role in plant biology. They are required for many important signaling reactions, but are also toxic byproducts of aerobic metabolism. Recent studies revealed that ROS are necessary for the progression of several basic biological processes including cellular proliferation and differentiation. Moreover, cell death-that was previously thought to be the outcome of ROS directly killing cells by oxidation, in other words via oxidative stress-is now considered to be the result of ROS triggering a physiological or programmed pathway for cell death. This Opinion focuses on the possibility that ROS are beneficial to plants, supporting cellular proliferation, physiological function, and viability, and that maintaining a basal level of ROS in cells is essential for life.
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Affiliation(s)
- Ron Mittler
- Department of Biological Sciences and BioDiscovery Institute, College of Arts and Sciences, University of North Texas, 1155 Union Circle #305220, Denton, TX 76203, USA.
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Noshi M, Yamada H, Hatanaka R, Tanabe N, Tamoi M, Shigeoka S. Arabidopsis dehydroascorbate reductase 1 and 2 modulate redox states of ascorbate-glutathione cycle in the cytosol in response to photooxidative stress. Biosci Biotechnol Biochem 2016; 81:523-533. [PMID: 27852156 DOI: 10.1080/09168451.2016.1256759] [Citation(s) in RCA: 24] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2022]
Abstract
Ascorbate and glutathione are indispensable cellular redox buffers and allow plants to acclimate stressful conditions. Arabidopsis contains three functional dehydroascorbate reductases (DHAR1-3), which catalyzes the conversion of dehydroascorbate into its reduced form using glutathione as a reductant. We herein attempted to elucidate the physiological role in DHAR1 and DHAR2 in stress responses. The total DHAR activities in DHAR knockout Arabidopsis plants, dhar1 and dhar2, were 22 and 92%, respectively, that in wild-type leaves. Under high light (HL), the levels of total ascorbate and dehydroascorbate were only reduced and increased, respectively, in dhar1. The oxidation of glutathione under HL was significantly inhibited in both dhar1 and dhar2, while glutathione contents were only enhanced in dhar1. The dhar1 showed stronger visible symptoms than the dhar2 under photooxidative stress conditions. Our results demonstrated a pivotal role of DHAR1 in the modulation of cellular redox states under photooxidative stress.
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Affiliation(s)
- Masahiro Noshi
- a Faculty of Agriculture, Department of Advanced Bioscience , Kindai University , Nara , Japan
| | - Hiroki Yamada
- a Faculty of Agriculture, Department of Advanced Bioscience , Kindai University , Nara , Japan
| | - Risa Hatanaka
- a Faculty of Agriculture, Department of Advanced Bioscience , Kindai University , Nara , Japan
| | - Noriaki Tanabe
- a Faculty of Agriculture, Department of Advanced Bioscience , Kindai University , Nara , Japan
| | - Masahiro Tamoi
- a Faculty of Agriculture, Department of Advanced Bioscience , Kindai University , Nara , Japan
| | - Shigeru Shigeoka
- a Faculty of Agriculture, Department of Advanced Bioscience , Kindai University , Nara , Japan
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40
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Zhang P, Zhang R, Fang X, Song T, Cai X, Liu H, Du S. Toxic effects of graphene on the growth and nutritional levels of wheat (Triticum aestivum L.): short- and long-term exposure studies. JOURNAL OF HAZARDOUS MATERIALS 2016; 317:543-551. [PMID: 27343870 DOI: 10.1016/j.jhazmat.2016.06.019] [Citation(s) in RCA: 28] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/19/2014] [Revised: 11/03/2014] [Accepted: 11/05/2014] [Indexed: 05/24/2023]
Abstract
Increased use of graphene materials might lead to their release into the environment. However, only a few studies have investigated the impact of graphene-based materials on green plants. In the present study, effects of graphene on plant roots and shoots after 48h or 30days of hydroponic culture were evaluated to determine its phytotoxicity. Results showed that although exposure to graphene (250, 500, 1000 and 1500mgL(-1)) significantly improved root elongation, root hair production was impaired. These observations might be associated with graphene induced-oxidative stress (indicated by nitroblue tetrazolium (NBT) and Evans blue staining, malondialdehyde (MDA) estimation, and antioxidant enzyme activity assay). After 30days of graphene exposure, shoot biomass, chlorophyll content, PSII activity and levels of several nutrient elements (N, K, Ca, Mg, Fe, Zn and Cu) were reduced, indicating that graphene inhibited plant growth and photosynthesis, and caused an imbalance of nutrient homeostasis. Based on these findings, we conclude that graphene has growth-limiting effects on plants, including root hair reduction, oxidative burst, photosynthesis inhibition, and nutritional disorder.
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Affiliation(s)
- Peng Zhang
- School of Environmental Science and Engineering, Zhejiang Gongshang University, Hangzhou 310018, China
| | - Ranran Zhang
- School of Environmental Science and Engineering, Zhejiang Gongshang University, Hangzhou 310018, China
| | - Xianzhi Fang
- College of Natural Resources and Environmental Science, Zhejiang University, Hangzhou 310058, China
| | - Tianqi Song
- School of Environmental Science and Engineering, Zhejiang Gongshang University, Hangzhou 310018, China
| | - Xiaodan Cai
- School of Environmental Science and Engineering, Zhejiang Gongshang University, Hangzhou 310018, China
| | - Huijun Liu
- School of Environmental Science and Engineering, Zhejiang Gongshang University, Hangzhou 310018, China
| | - Shaoting Du
- School of Environmental Science and Engineering, Zhejiang Gongshang University, Hangzhou 310018, China.
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41
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Inupakutika MA, Sengupta S, Devireddy AR, Azad RK, Mittler R. The evolution of reactive oxygen species metabolism. JOURNAL OF EXPERIMENTAL BOTANY 2016; 67:5933-5943. [PMID: 27742750 DOI: 10.1093/jxb/erw382] [Citation(s) in RCA: 99] [Impact Index Per Article: 12.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/21/2023]
Abstract
Reactive oxygen species (ROS) play a key role in the regulation of many biological processes in plants. Nonetheless, they are considered highly reactive and toxic to cells. Owing to their toxicity, as well as their important role in signaling, the level of ROS in cells needs to be tightly regulated. The ROS gene network, encoding a highly redundant arsenal of ROS scavenging mechanisms and an array of enzymes involved in ROS production, regulates ROS metabolism and signaling in plants. In this article, we review the role of the ROS gene network in plants and examine how it evolved. We identify key components of the ROS gene network in organisms that likely originated as early as 4.1-3.5 billion years ago, prior to the great oxidation event that resulted from the rise of cyanobacteria on Earth. This estimate concurs with recent evidence for the appearance of oxygenic photosynthetic organisms on Earth, suggesting that low and/or localized levels of photosynthetically produced oxygen necessitated the emergence of ROS scavenging mechanisms to protect life. Life forms have therefore evolved in the presence of ROS on Earth for at least 3.8-3.6 billion years, highlighting the intimate relationship that exists today between many physiological and developmental processes and ROS.
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Affiliation(s)
| | - Soham Sengupta
- Department of Biological Sciences, University of North Texas, Denton, TX 76203, USA
| | - Amith R Devireddy
- Department of Biological Sciences, University of North Texas, Denton, TX 76203, USA
| | - Rajeev K Azad
- Department of Biological Sciences, University of North Texas, Denton, TX 76203, USA
- Department of Mathematics, University of North Texas, Denton, TX 76203, USA
| | - Ron Mittler
- Department of Biological Sciences, University of North Texas, Denton, TX 76203, USA.
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42
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Ortega-Villasante C, Burén S, Barón-Sola Á, Martínez F, Hernández LE. In vivo ROS and redox potential fluorescent detection in plants: Present approaches and future perspectives. Methods 2016; 109:92-104. [DOI: 10.1016/j.ymeth.2016.07.009] [Citation(s) in RCA: 33] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/18/2016] [Revised: 07/08/2016] [Accepted: 07/11/2016] [Indexed: 11/16/2022] Open
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Stewart JJ, Demmig-Adams B, Cohu CM, Wenzl CA, Muller O, Adams WW. Growth temperature impact on leaf form and function in Arabidopsis thaliana ecotypes from northern and southern Europe. PLANT, CELL & ENVIRONMENT 2016; 39:1549-58. [PMID: 26832121 DOI: 10.1111/pce.12720] [Citation(s) in RCA: 33] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/23/2015] [Revised: 01/17/2016] [Accepted: 01/18/2016] [Indexed: 05/25/2023]
Abstract
The plasticity of leaf form and function in European lines of Arabidopsis thaliana was evaluated in ecotypes from Sweden and Italy grown under contrasting (cool versus hot) temperature regimes. Although both ecotypes exhibited acclimatory adjustments, the Swedish ecotype exhibited more pronounced responses to the two contrasting temperature regimes in several characterized features. These responses included thicker leaves with higher capacities for photosynthesis, likely facilitated by a greater number of phloem cells per minor vein for the active loading and export of sugars, when grown under cool temperature as opposed to leaves with a higher vein density and a greater number of tracheary elements per minor vein, likely facilitating higher rates of transpirational water loss (and thus evaporative cooling), when grown under hot temperature with high water availability. In addition, only the Swedish ecotype exhibited reduced rosette growth and greater levels of foliar tocopherols under the hot growth temperature. These responses, and the greater responsiveness of the Swedish ecotype compared with the Italian ecotype, are discussed in the context of redox signalling networks and transcription factors, and the greater range of environmental conditions experienced by the Swedish versus the Italian ecotype during the growing season in their native habitats.
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Affiliation(s)
- Jared J Stewart
- Department of Ecology and Evolutionary Biology, University of Colorado, Boulder, CO, 80309-0334, USA
| | - Barbara Demmig-Adams
- Department of Ecology and Evolutionary Biology, University of Colorado, Boulder, CO, 80309-0334, USA
| | - Christopher M Cohu
- Department of Ecology and Evolutionary Biology, University of Colorado, Boulder, CO, 80309-0334, USA
| | - Coleman A Wenzl
- Department of Ecology and Evolutionary Biology, University of Colorado, Boulder, CO, 80309-0334, USA
| | - Onno Muller
- Institute of Bio- and Geosciences, IBG-2: Plant Sciences, Forschungszentrum Jülich GmbH, Jülich, 52425, Germany
| | - William W Adams
- Department of Ecology and Evolutionary Biology, University of Colorado, Boulder, CO, 80309-0334, USA
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44
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Marichali A, Dallali S, Ouerghemmi S, Sebei H, Casabianca H, Hosni K. Responses of Nigella sativa L. to Zinc Excess: Focus on Germination, Growth, Yield and Yield Components, Lipid and Terpene Metabolism, and Total Phenolics and Antioxidant Activities. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2016; 64:1664-1675. [PMID: 26853463 DOI: 10.1021/acs.jafc.6b00274] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/29/2023]
Abstract
A comprehensive analysis of the responses of Nigella sativa L. to elevated zinc concentrations was assessed in pot experiments. Zn excess supply did not affect the germination but drastically reduced radicle elongation. A concentration-dependent reduction in all growth parameters, yield, and yield components was observed. With the increasing Zn concentrations, total lipid contents decreased and changes in fatty composition toward the production of saturated ones were underscored. Despite the reduction in the seeds essential oil yield, a redirection of the terpene metabolism toward the synthesis of oxygenated compounds has been evidenced. A significant increase in the total phenols and flavonoids contents concomitant with improved antioxidant activities has also been found. Collectively, these results highlight the possible use of N. sativa L. in phytoremediation applications, on the one hand, and that Zn excess could represent an excellent alternative to improve the nutritional attributes of this important species, on the other hand.
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Affiliation(s)
- Ahmed Marichali
- Ecole Supérieure d'Agriculture de Mograne , 1121 Zaghouan, Tunisia
- Institut Supérieur Agronomique de Chott-Mariem , 4042 Sousse, Tunisia
| | - Sana Dallali
- Ecole Supérieure d'Agriculture de Mograne , 1121 Zaghouan, Tunisia
| | | | - Houcine Sebei
- Ecole Supérieure d'Agriculture de Mograne , 1121 Zaghouan, Tunisia
| | - Hervé Casabianca
- Département Service Central d'Analyse, Institut des Sciences Analytiques , 5 rue de la Doua, Villeurbanne, 69100 Lyon, France
| | - Karim Hosni
- Laboratoire des Substances Naturelles, Institut National de Recherche et d'Analyse Physico-chimique (INRAP), Biotechpôle de Sidi Thabet , 2020 Ariana, Tunisia
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45
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Verbon EH, Liberman LM. Beneficial Microbes Affect Endogenous Mechanisms Controlling Root Development. TRENDS IN PLANT SCIENCE 2016; 21:218-229. [PMID: 26875056 PMCID: PMC4772406 DOI: 10.1016/j.tplants.2016.01.013] [Citation(s) in RCA: 152] [Impact Index Per Article: 19.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/04/2015] [Revised: 01/08/2016] [Accepted: 01/11/2016] [Indexed: 05/18/2023]
Abstract
Plants have incredible developmental plasticity, enabling them to respond to a wide range of environmental conditions. Among these conditions is the presence of plant growth-promoting rhizobacteria (PGPR) in the soil. Recent studies show that PGPR affect Arabidopsis thaliana root growth and development by modulating cell division and differentiation in the primary root and influencing lateral root development. These effects lead to dramatic changes in root system architecture that significantly impact aboveground plant growth. Thus, PGPR may promote shoot growth via their effect on root developmental programs. This review focuses on contextualizing root developmental changes elicited by PGPR in light of our understanding of plant-microbe interactions and root developmental biology.
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Affiliation(s)
- Eline H Verbon
- Plant-Microbe Interactions, Department of Biology, Faculty of Science, Utrecht University, Padualaan 8, 3584CH Utrecht, The Netherlands
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46
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Uslu VV, Grossmann G. The biosensor toolbox for plant developmental biology. CURRENT OPINION IN PLANT BIOLOGY 2016; 29:138-47. [PMID: 26802805 DOI: 10.1016/j.pbi.2015.12.001] [Citation(s) in RCA: 36] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/10/2015] [Revised: 12/01/2015] [Accepted: 12/02/2015] [Indexed: 05/14/2023]
Abstract
Plant development is highly interconnected with the metabolic state of tissues and cells. Current research efforts focus on the identification of the links and mechanisms that govern the interplay between metabolic and gene-regulatory networks. Genetically encoded sensors that allow detection of small molecules in vivo and at high spatio-temporal resolution promise to be the tools of choice for quantifying and visualizing the dynamics of metabolite flux in plants. We provide an overview about current approaches to measure signaling molecules, such as hormones, calcium and sugars, as well as for monitoring the metabolic state via energy equivalents and pH. Biosensors show great potential to address questions of plant development but there are also limitations where alternative approaches are needed.
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Affiliation(s)
- Veli V Uslu
- Ruprecht-Karls-Universität Heidelberg, Department of Plant Molecular Biology, Centre for Organismal Studies, Im Neuenheimer Feld 360, 69120 Heidelberg, Germany
| | - Guido Grossmann
- Ruprecht-Karls-Universität Heidelberg, CellNetworks Excellence Cluster and Centre for Organismal Studies, Im Neuenheimer Feld 329, 69120 Heidelberg, Germany.
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47
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Schippers JH, Foyer CH, van Dongen JT. Redox regulation in shoot growth, SAM maintenance and flowering. CURRENT OPINION IN PLANT BIOLOGY 2016; 29:121-8. [PMID: 26799134 DOI: 10.1016/j.pbi.2015.11.009] [Citation(s) in RCA: 72] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/29/2015] [Revised: 11/18/2015] [Accepted: 11/20/2015] [Indexed: 05/03/2023]
Abstract
Reactive oxygen species (ROS) and associated reduction/oxidation (redox) controls involving glutathione, glutaredoxins and thioredoxins play key roles in the regulation of plant growth and development. While many questions remain concerning redox functions in the shoot apical meristem (SAM), accumulating evidence suggests that redox master switches integrate major hormone signals and transcriptional networks in the SAM, and so regulate organ growth, polarity and floral development. Auxin-induced activation of plasma-membrane located NADPH-oxidases and mitochondrial respiratory bioenergetics are likely regulators of the ROS bursts that drive the cell cycle in proliferating regions, with other hormones such as jasmonic acid playing propagating or antagonistic roles in gene regulation. Moreover, the activation of oxygen production by photosynthesis and oxygen-dependent N-end rule controls are linked to the transition from cell proliferation to cell expansion and differentiation. While much remains to be understood, the nexus of available redox controls provides a key underpinning mechanism linking hormonal controls, energy metabolism and bioenergetics to plant growth and development.
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Affiliation(s)
- Jos Hm Schippers
- Institute of Biology I, RWTH Aachen University, Worringerweg 1, 52074 Aachen, Germany.
| | - Christine H Foyer
- Centre for Plant Sciences, Faculty of Biology, University of Leeds, Leeds LS2 9JT, UK
| | - Joost T van Dongen
- Institute of Biology I, RWTH Aachen University, Worringerweg 1, 52074 Aachen, Germany
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48
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MYB36 regulates the transition from proliferation to differentiation in the Arabidopsis root. Proc Natl Acad Sci U S A 2015; 112:12099-104. [PMID: 26371322 DOI: 10.1073/pnas.1515576112] [Citation(s) in RCA: 105] [Impact Index Per Article: 11.7] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/09/2023] Open
Abstract
Stem cells are defined by their ability to self-renew and produce daughter cells that proliferate and mature. These maturing cells transition from a proliferative state to a terminal state through the process of differentiation. In the Arabidopsis thaliana root the transcription factors SCARECROW and SHORTROOT regulate specification of the bipotent stem cell that gives rise to cortical and endodermal progenitors. Subsequent progenitor proliferation and differentiation generate mature endodermis, marked by the Casparian strip, a cell-wall modification that prevents ion diffusion into and out of the vasculature. We identified a transcription factor, MYB DOMAIN PROTEIN 36 (MYB36), that regulates the transition from proliferation to differentiation in the endodermis. We show that SCARECROW directly activates MYB36 expression, and that MYB36 likely acts in a feed-forward loop to regulate essential Casparian strip formation genes. We show that myb36 mutants have delayed and defective barrier formation as well as extra divisions in the meristem. Our results demonstrate that MYB36 is a critical positive regulator of differentiation and negative regulator of cell proliferation.
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49
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Abscisic Acid: Hidden Architect of Root System Structure. PLANTS 2015; 4:548-72. [PMID: 27135341 PMCID: PMC4844405 DOI: 10.3390/plants4030548] [Citation(s) in RCA: 89] [Impact Index Per Article: 9.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 07/06/2015] [Revised: 08/01/2015] [Accepted: 08/03/2015] [Indexed: 01/15/2023]
Abstract
Plants modulate root growth in response to changes in the local environment, guided by intrinsic developmental genetic programs. The hormone Abscisic Acid (ABA) mediates responses to different environmental factors, such as the presence of nitrate in the soil, water stress and salt, shaping the structure of the root system by regulating the production of lateral roots as well as controlling root elongation by modulating cell division and elongation. Curiously, ABA controls different aspects of root architecture in different plant species, perhaps providing some insight into the great diversity of root architecture in different plants, both from different taxa and from different environments. ABA is an ancient signaling pathway, acquired well before the diversification of land plants. Nonetheless, how this ancient signaling module is implemented or interacts within a larger signaling network appears to vary in different species. This review will examine the role of ABA in the control of root architecture, focusing on the regulation of lateral root formation in three plant species, Arabidopsis thaliana, Medicago truncatula and Oryza sativa. We will consider how the implementation of the ABA signaling module might be a target of natural selection, to help contribute to the diversity of root architecture in nature.
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50
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Szalonek M, Sierpien B, Rymaszewski W, Gieczewska K, Garstka M, Lichocka M, Sass L, Paul K, Vass I, Vankova R, Dobrev P, Szczesny P, Marczewski W, Krusiewicz D, Strzelczyk-Zyta D, Hennig J, Konopka-Postupolska D. Potato Annexin STANN1 Promotes Drought Tolerance and Mitigates Light Stress in Transgenic Solanum tuberosum L. Plants. PLoS One 2015; 10:e0132683. [PMID: 26172952 PMCID: PMC4501783 DOI: 10.1371/journal.pone.0132683] [Citation(s) in RCA: 52] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/23/2014] [Accepted: 06/18/2015] [Indexed: 11/18/2022] Open
Abstract
Annexins are a family of calcium- and membrane-binding proteins that are important for plant tolerance to adverse environmental conditions. Annexins function to counteract oxidative stress, maintain cell redox homeostasis, and enhance drought tolerance. In the present study, an endogenous annexin, STANN1, was overexpressed to determine whether crop yields could be improved in potato (Solanum tuberosum L.) during drought. Nine potential potato annexins were identified and their expression characterized in response to drought treatment. STANN1 mRNA was constitutively expressed at a high level and drought treatment strongly increased transcription levels. Therefore, STANN1 was selected for overexpression analysis. Under drought conditions, transgenic potato plants ectopically expressing STANN1 were more tolerant to water deficit in the root zone, preserved more water in green tissues, maintained chloroplast functions, and had higher accumulation of chlorophyll b and xanthophylls (especially zeaxanthin) than wild type (WT). Drought-induced reductions in the maximum efficiency and the electron transport rate of photosystem II (PSII), as well as the quantum yield of photosynthesis, were less pronounced in transgenic plants overexpressing STANN1 than in the WT. This conferred more efficient non-photochemical energy dissipation in the outer antennae of PSII and probably more efficient protection of reaction centers against photooxidative damage in transgenic plants under drought conditions. Consequently, these plants were able to maintain effective photosynthesis during drought, which resulted in greater productivity than WT plants despite water scarcity. Although the mechanisms underlying this stress protection are not yet clear, annexin-mediated photoprotection is probably linked to protection against light-induced oxidative stress.
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Affiliation(s)
- Michal Szalonek
- Plant Pathogenesis Lab, Institute of Biochemistry and Biophysics Polish Academy of Science, Warsaw, Poland
| | - Barbara Sierpien
- Plant Pathogenesis Lab, Institute of Biochemistry and Biophysics Polish Academy of Science, Warsaw, Poland
| | - Wojciech Rymaszewski
- Plant Pathogenesis Lab, Institute of Biochemistry and Biophysics Polish Academy of Science, Warsaw, Poland
| | | | - Maciej Garstka
- Department of Metabolic Regulation, University of Warsaw, Warsaw, Poland
| | - Malgorzata Lichocka
- Plant Pathogenesis Lab, Institute of Biochemistry and Biophysics Polish Academy of Science, Warsaw, Poland
| | - Laszlo Sass
- Laboratory of Molecular Stress and Photobiology, Biological Research Centre of the Hungarian Academy of Sciences, Szeged, Hungary
| | - Kenny Paul
- Laboratory of Molecular Stress and Photobiology, Biological Research Centre of the Hungarian Academy of Sciences, Szeged, Hungary
| | - Imre Vass
- Laboratory of Molecular Stress and Photobiology, Biological Research Centre of the Hungarian Academy of Sciences, Szeged, Hungary
| | - Radomira Vankova
- Laboratory of Hormonal Regulations in Plants, Institute of Experimental Botany AS CR, Praha, Czech Republic
| | - Peter Dobrev
- Laboratory of Hormonal Regulations in Plants, Institute of Experimental Botany AS CR, Praha, Czech Republic
| | - Pawel Szczesny
- Plant Pathogenesis Lab, Institute of Biochemistry and Biophysics Polish Academy of Science, Warsaw, Poland
| | - Waldemar Marczewski
- Department of Potato Genetics and Parental Lines, Plant Breeding and Acclimatization Institute—National Research Institute, Mlochow, Poland
| | - Dominika Krusiewicz
- Department of Potato Genetics and Parental Lines, Plant Breeding and Acclimatization Institute—National Research Institute, Mlochow, Poland
| | - Danuta Strzelczyk-Zyta
- Department of Potato Genetics and Parental Lines, Plant Breeding and Acclimatization Institute—National Research Institute, Mlochow, Poland
| | - Jacek Hennig
- Plant Pathogenesis Lab, Institute of Biochemistry and Biophysics Polish Academy of Science, Warsaw, Poland
| | - Dorota Konopka-Postupolska
- Plant Pathogenesis Lab, Institute of Biochemistry and Biophysics Polish Academy of Science, Warsaw, Poland
- * E-mail:
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