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Hara F, Mizuyama N, Fujino T, Takada S, Temma T, Saji H, Mukai T, Hagimori M. Development of a Pyrone-Fused Tricyclic Scaffold-based Ratiometric Fluorescent Probe for Al 3+ Detection. J Fluoresc 2024:10.1007/s10895-024-03864-w. [PMID: 39042359 DOI: 10.1007/s10895-024-03864-w] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/30/2024] [Accepted: 07/18/2024] [Indexed: 07/24/2024]
Abstract
Aluminum (Al3+) is environmentally abundant and can harm living organisms in various ways, such as by inhibiting root growth, damaging faunal nervous systems, and promoting tumor cell proliferation. However, the dynamics of Al3+ in living organisms are largely unknown; thus, detecting Al3+ in the environment and organisms is crucial. Fluorescent probes are useful tools for the selective detection of metal ions. In particular, ratiometric fluorescent probes exhibit a detection response at two different maximum fluorescence emission wavelengths; which is advantageous for avoiding the influence of background fluorescence. A novel pyrone-fused tricyclic scaffold-based ratiometric fluorescent probe for detecting Al3+, ethyl 11-imino-1-oxo-3-phenyl-1H,11H-pyrano[4,3-b] quinolizine-5-carboxylate (PQ), was developed in this study. The PQ fluorescence blue shifted from 505 to 457 nm upon the addition of Al3+. The blue shift was accompanied by a change in the fluorescence color of the PQ solution from green to blue. Fluorescence titration experiments demonstrated that the fluorescence intensity ratio at the two peaks of interest (457/505 nm) increased in a concentration-dependent manner upon the addition of Al3+. Moreover, this study demonstrated that a PQ-soaked paper displays a visible color change under ultraviolet light upon exposure to Al3+. The above results suggest that PQ is an effective ratiometric probe for the detection of Al3+ in the environment. Future studies will be conducted to introduce various substituents and develop fluorescent probes by leveraging the fluorescence property of a pyrone-fused tricyclic scaffolds.
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Affiliation(s)
- Fumiko Hara
- Laboratory of Analytical Chemistry, Faculty of Pharmaceutical Sciences, Mukogawa Women's University, 11-68 Koshien Kyubancho, Nishinomiya, 663-8179, Japan
| | - Naoko Mizuyama
- Division of Medical Innovation, Translational Research Center for Medical Innovation, 1-5-4 Minatojima-Minamimachi, Chuo-Ku, Kobe, 650-0047, Japan
| | - Takeshi Fujino
- Department of Environmental Science and Technology, Graduate School of Science and Engineering, Saitama University, 255 Shimo-Okubo, Sakura-Ku, Saitama, 338-8570, Japan
- Strategic Research Area for Sustainable Development in East Asia, Saitama University, 255 Shimo-Okubo, Sakura-Ku, Saitama, 338-8570, Japan
| | - Shinya Takada
- Laboratory of Analytical Chemistry, Faculty of Pharmaceutical Sciences, Mukogawa Women's University, 11-68 Koshien Kyubancho, Nishinomiya, 663-8179, Japan
| | - Takashi Temma
- Department of Biofunctional Analysis, Graduate School of Pharmaceutical Sciences, Osaka Medical and Pharmaceutical University, 4-20-1 Nasahara, Takatsuki, 569-1094, Japan
| | - Hideo Saji
- Graduate School of Pharmaceutical Sciences, Kyoto University, 46-29 Yoshida-Shimoadachi-Cho, Sakyo-Ku, Kyoto, 606-8501, Japan
| | - Takahiro Mukai
- Department of Biophysical Chemistry, Kobe Pharmaceutical University, 4-19-1 Motoyamakita Machi, Higashinada-Ku, Kobe, 658-8558, Japan
| | - Masayori Hagimori
- Laboratory of Analytical Chemistry, Faculty of Pharmaceutical Sciences, Mukogawa Women's University, 11-68 Koshien Kyubancho, Nishinomiya, 663-8179, Japan.
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Larsen PB, He S, Meyer TJ, Szurman-Zubrzycka M, Alfs C, Kwasniewska J, Pervis A, Gajecka M, Veerabahu A, Beaulieu TR, Bolaris SC, Eekhout T, De Veylder L, Abel S, Szarejko I, Murn J. The stem cell niche transcription factor ETHYLENE RESPONSE FACTOR 115 participates in aluminum-induced terminal differentiation in Arabidopsis roots. PLANT, CELL & ENVIRONMENT 2024. [PMID: 39007549 DOI: 10.1111/pce.15032] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/01/2024] [Revised: 06/21/2024] [Accepted: 06/24/2024] [Indexed: 07/16/2024]
Abstract
Aluminum-dependent stoppage of root growth requires the DNA damage response (DDR) pathway including the p53-like transcription factor SUPPRESSOR OF GAMMA RADIATION 1 (SOG1), which promotes terminal differentiation of the root tip in response to Al dependent cell death. Transcriptomic analyses identified Al-induced SOG1-regulated targets as candidate mediators of this growth arrest. Analysis of these factors either as loss-of-function mutants or by overexpression in the als3-1 background shows ERF115, which is a key transcription factor that in other scenarios is rate-limiting for damaged stem cell replenishment, instead participates in transition from an actively growing root to one that has terminally differentiated in response to Al toxicity. This is supported by a loss-of-function erf115 mutant raising the threshold of Al required to promote terminal differentiation of Al hypersensitive als3-1. Consistent with its key role in stoppage of root growth, a putative ERF115 barley ortholog is also upregulated following Al exposure, suggesting a conserved role for this ATR-dependent pathway in Al response. In contrast to other DNA damage agents, these results show that ERF115 and likely related family members are important determinants of terminal differentiation of the root tip following Al exposure and central outputs of the SOG1-mediated pathway in Al response.
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Affiliation(s)
- Paul B Larsen
- Department of Biochemistry, University of California-Riverside, Riverside, California, USA
| | - Shiyang He
- Department of Biochemistry, University of California-Riverside, Riverside, California, USA
| | - Taylor J Meyer
- Department of Biochemistry, University of California-Riverside, Riverside, California, USA
| | - Miriam Szurman-Zubrzycka
- Institute of Biology, Biotechnology and Environmental Protection, Faculty of Natural Sciences, University of Silesia in Katowice, Katowice, Poland
| | - Carolin Alfs
- Leibniz Institute for Plant Biochemistry, Department of Molecular Signal Processing, Halle, Germany
| | - Jolanta Kwasniewska
- Institute of Biology, Biotechnology and Environmental Protection, Faculty of Natural Sciences, University of Silesia in Katowice, Katowice, Poland
| | - Alexandra Pervis
- Department of Biochemistry, University of California-Riverside, Riverside, California, USA
| | - Monika Gajecka
- Institute of Biology, Biotechnology and Environmental Protection, Faculty of Natural Sciences, University of Silesia in Katowice, Katowice, Poland
| | - Aishwarya Veerabahu
- Department of Biochemistry, University of California-Riverside, Riverside, California, USA
| | - Taylor R Beaulieu
- Department of Biochemistry, University of California-Riverside, Riverside, California, USA
| | - Stephen C Bolaris
- Department of Biochemistry, University of California-Riverside, Riverside, California, USA
| | - Thomas Eekhout
- Department of Plant Biotechnology and Bioinformatics, Ghent University, Ghent, Belgium
- Center for Plant Systems Biology, VIB, Ghent, Belgium
| | - Lieven De Veylder
- Department of Plant Biotechnology and Bioinformatics, Ghent University, Ghent, Belgium
- Center for Plant Systems Biology, VIB, Ghent, Belgium
| | - Steffen Abel
- Leibniz Institute for Plant Biochemistry, Department of Molecular Signal Processing, Halle, Germany
| | - Iwona Szarejko
- Institute of Biology, Biotechnology and Environmental Protection, Faculty of Natural Sciences, University of Silesia in Katowice, Katowice, Poland
| | - Jernej Murn
- Department of Biochemistry, University of California-Riverside, Riverside, California, USA
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Mahapatra K, Roy S. SOG1 and BRCA1 Interdependently Regulate RAD54 Expression for Repairing Salinity-Induced DNA Double-Strand Breaks in Arabidopsis. PLANT & CELL PHYSIOLOGY 2024; 65:708-728. [PMID: 38242160 DOI: 10.1093/pcp/pcae008] [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: 04/04/2023] [Revised: 12/04/2023] [Accepted: 01/16/2024] [Indexed: 01/21/2024]
Abstract
As sessile organisms, land plants experience various forms of environmental stresses throughout their life span. Therefore, plants have developed extensive and complicated defense mechanisms, including a robust DNA damage response (DDR) and DNA repair systems for maintaining genome integrity. In Arabidopsis, the NAC [NO APICAL MERISTEM (NAM), ARABIDOPSIS TRANSCRIPTION ACTIVATION FACTOR (ATAF), CUP-SHAPED COTYLEDON (CUC)] domain family transcription factor SUPPRESSOR OF GAMMA RESPONSE 1 (SOG1) plays an important role in regulating DDR. Here, we show that SOG1 plays a key role in regulating the repair of salinity-induced DNA double-strand breaks (DSBs) via the homologous recombination (HR) pathway in Arabidopsis. The sog1-1 mutant seedlings display a considerably slower rate of repair of salinity-induced DSBs. Accumulation of SOG1 protein increases in wild-type Arabidopsis under salinity stress, and it enhances the expression of HR pathway-related genes, including RAD51, RAD54 and BReast CAncer gene 1 (BRCA1), respectively, as found in SOG1 overexpression lines. SOG1 binds specifically to the AtRAD54 promoter at the 5'-(N)4GTCAA(N)3C-3' consensus sequence and positively regulates its expression under salinity stress. The phenotypic responses of sog1-1/atrad54 double mutants suggest that SOG1 functions upstream of RAD54, and both these genes are essential in regulating DDR under salinity stress. Furthermore, SOG1 interacts directly with BRCA1, an important component of the HR-mediated DSB repair pathway in plants, where BRCA1 appears to facilitate the binding of SOG1 to the RAD54 promoter. At the genetic level, SOG1 and BRCA1 function interdependently in modulating RAD54 expression under salinity-induced DNA damage. Together, our results suggest that SOG1 regulates the repair of salinity-induced DSBs via the HR-mediated pathway through genetic interactions with RAD54 and BRCA1 in Arabidopsis.
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Affiliation(s)
- Kalyan Mahapatra
- Department of Botany, UGC Center for Advanced Studies, The University of Burdwan, Golapbag Campus, Burdwan, 713 104 West Bengal, India
| | - Sujit Roy
- Department of Botany, UGC Center for Advanced Studies, The University of Burdwan, Golapbag Campus, Burdwan, 713 104 West Bengal, India
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Zaragoza JZ, Klap K, Heidstra R, Zhou W, Scheres B. The dual role of the RETINOBLASTOMA-RELATED protein in the DNA damage response is coordinated by the interaction with LXCXE-containing proteins. THE PLANT JOURNAL : FOR CELL AND MOLECULAR BIOLOGY 2024; 118:1194-1206. [PMID: 38321589 DOI: 10.1111/tpj.16665] [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: 02/08/2022] [Revised: 01/10/2024] [Accepted: 01/18/2024] [Indexed: 02/08/2024]
Abstract
Living organisms possess mechanisms to safeguard genome integrity. To avoid spreading mutations, DNA lesions are detected and cell division is temporarily arrested to allow repair mechanisms. Afterward, cells either resume division or respond to unsuccessful repair by undergoing programmed cell death (PCD). How the success rate of DNA repair connects to later cell fate decisions remains incompletely known, particularly in plants. The Arabidopsis thaliana RETINOBLASTOMA-RELATED1 (RBR) protein and its partner E2FA, play both structural and transcriptional functions in the DNA damage response (DDR). Here we provide evidence that distinct RBR protein interactions with LXCXE motif-containing proteins guide these processes. Using the N849F substitution in the RBR B-pocket domain, which specifically disrupts binding to the LXCXE motif, we show that these interactions are dispensable in unchallenging conditions. However, N849F substitution abolishes RBR nuclear foci and promotes PCD and growth arrest upon genotoxic stress. NAC044, which promotes growth arrest and PCD, accumulates after the initial recruitment of RBR to foci and can bind non-focalized RBR through the LXCXE motif in a phosphorylation-independent manner, allowing interaction at different cell cycle phases. Disrupting NAC044-RBR interaction impairs PCD, but their genetic interaction points to opposite independent roles in the regulation of PCD. The LXCXE-binding dependency of the roles of RBR in the DDR suggests a coordinating mechanism to translate DNA repair success to cell survival. We propose that RBR and NAC044 act in two distinct DDR pathways, but interact to integrate input from both DDR pathways to decide upon an irreversible cell fate decision.
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Affiliation(s)
- Jorge Zamora Zaragoza
- Laboratory of Molecular Biology, Department of Plant Sciences, Wageningen University and Research, 6708 PB, Wageningen, The Netherlands
- Department of Biotechnology, Rijk Zwaan Breeding B.V., Eerste Kruisweg 9, 4793 RS, Fijnaart, The Netherlands
| | - Katinka Klap
- Laboratory of Molecular Biology, Department of Plant Sciences, Wageningen University and Research, 6708 PB, Wageningen, The Netherlands
| | - Renze Heidstra
- Laboratory of Molecular Biology, Department of Plant Sciences, Wageningen University and Research, 6708 PB, Wageningen, The Netherlands
| | - Wenkun Zhou
- Laboratory of Molecular Biology, Department of Plant Sciences, Wageningen University and Research, 6708 PB, Wageningen, The Netherlands
- State Key Laboratory of Plant Physiology and Biochemistry, College of Biological Sciences, China Agricultural University, Beijing, 100193, China
| | - Ben Scheres
- Laboratory of Molecular Biology, Department of Plant Sciences, Wageningen University and Research, 6708 PB, Wageningen, The Netherlands
- Department of Biotechnology, Rijk Zwaan Breeding B.V., Eerste Kruisweg 9, 4793 RS, Fijnaart, The Netherlands
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Ur Rahman S, Han JC, Ahmad M, Ashraf MN, Khaliq MA, Yousaf M, Wang Y, Yasin G, Nawaz MF, Khan KA, Du Z. Aluminum phytotoxicity in acidic environments: A comprehensive review of plant tolerance and adaptation strategies. ECOTOXICOLOGY AND ENVIRONMENTAL SAFETY 2024; 269:115791. [PMID: 38070417 DOI: 10.1016/j.ecoenv.2023.115791] [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: 09/20/2023] [Revised: 11/28/2023] [Accepted: 12/04/2023] [Indexed: 01/12/2024]
Abstract
Aluminum (Al), a non-essential metal for plant growth, exerts significant phytotoxic effects, particularly on root growth. Anthropogenic activities would intensify Al's toxic effects by releasing Al3+ into the soil solution, especially in acidic soils with a pH lower than 5.5 and rich mineral content. The severity of Al-induced phytotoxicity varies based on factors such as Al concentration, ionic form, plant species, and growth stages. Al toxicity leads to inhibited root and shoot growth, reduced plant biomass, disrupted water uptake causing nutritional imbalance, and adverse alterations in physiological, biochemical, and molecular processes. These effects collectively lead to diminished plant yield and quality, along with reduced soil fertility. Plants employ various mechanisms to counter Al toxicity under stress conditions, including sequestering Al in vacuoles, exuding organic acids (OAs) like citrate, oxalate, and malate from root tip cells to form Al-complexes, activating antioxidative enzymes, and overexpressing Al-stress regulatory genes. Recent advancements focus on enhancing the exudation of OAs to prevent Al from entering the plant, and developing Al-tolerant varieties. Gene transporter families, such as ATP-Binding Cassette (ABC), Aluminum-activated Malate Transporter (ALMT), Natural resistance-associated macrophage protein (Nramp), Multidrug and Toxic compounds Extrusion (MATE), and aquaporin, play a crucial role in regulating Al toxicity. This comprehensive review examined recent progress in understanding the cytotoxic impact of Al on plants at the cellular and molecular levels. Diverse strategies developed by both plants and scientists to mitigate Al-induced phytotoxicity were discussed. Furthermore, the review explored recent genomic developments, identifying candidate genes responsible for OAs exudation, and delved into genome-mediated breeding initiatives, isolating transgenic and advanced breeding lines to cultivate Al-tolerant plants.
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Affiliation(s)
- Shafeeq Ur Rahman
- Water Science and Environmental Engineering Research Center, College of Chemical and Environmental Engineering, Shenzhen University, Shenzhen 518060, China; Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing 100085, China.
| | - Jing-Cheng Han
- Water Science and Environmental Engineering Research Center, College of Chemical and Environmental Engineering, Shenzhen University, Shenzhen 518060, China.
| | - Muhammad Ahmad
- Water Science and Environmental Engineering Research Center, College of Chemical and Environmental Engineering, Shenzhen University, Shenzhen 518060, China
| | - Muhammad Nadeem Ashraf
- Institute of Soil and Environmental Sciences, University of Agriculture, Faisalabad 38040, Pakistan
| | | | - Maryam Yousaf
- Water Science and Environmental Engineering Research Center, College of Chemical and Environmental Engineering, Shenzhen University, Shenzhen 518060, China
| | - Yuchen Wang
- Water Science and Environmental Engineering Research Center, College of Chemical and Environmental Engineering, Shenzhen University, Shenzhen 518060, China; Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing 100085, China
| | - Ghulam Yasin
- Department of Forestry and Range Management, FAS & T, Bahauddin Zakariya University Multan, Multan 60000, Pakistan
| | | | - Khalid Ali Khan
- Unit of Bee Research and Honey Production, Research Center for Advanced Materials Science (RCAMS), King Khalid University, Abha 61413, Saudi Arabia; Applied College, King Khalid University, Abha 61413, Saudi Arabia
| | - Zhenjie Du
- Farmland Irrigation Research Institute, Chinese Academy of Agricultural Sciences, Xinxiang 453002, China; Water Environment Factor Risk Assessment Laboratory of Agricultural Products Quality and Safety, Ministry of Agriculture and Rural Affairs, Xinxiang 453002, China.
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Rai R, Jat D, Mishra SK. Naringenin ameliorates aluminum toxicity-induced testicular dysfunctions in mice by suppressing oxidative stress and histopathological alterations. Syst Biol Reprod Med 2023; 69:347-353. [PMID: 37204407 DOI: 10.1080/19396368.2023.2203794] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/27/2022] [Accepted: 04/12/2023] [Indexed: 05/20/2023]
Abstract
Environmental aluminum intoxication has shown increasingly alarming negative consequences on reproductive health. This needs mechanistic exploration and preventive management using medicines like herbal supplementation. The ameliorative effects of naringenin (NAR) against AlCl3-induced reproductive toxicity were thus evaluated in this study by assessing testicular dysfunction in albino male mice. A group of mice was treated with AlCl3 (10 mg/kg b.w./day) and then with NAR (10 mg/kg b.w./day) for a total of sixty-two days. Results show that treatment of AlCl3 significantly reduced the body weight and testis weight of mice. AlCl3 caused oxidative damage in mice as evidenced by an increase in the concentration of nitric oxide, advanced oxidation of protein product, protein carbonylation, and lipid peroxidation. Furthermore, diminished activity of antioxidant moieties included superoxide dismutase, catalase, glutathione peroxidase, glutathione reductase, reduced glutathione, and oxidized glutathione. Several histological changes, such as spermatogenic cell degeneration, germinal epithelium detachment, and structural abnormalities in seminiferous tubules, were observed in AlCl3-treated mice. Oral administration of NAR was found to restore body weight and testes weight and ameliorated reproductive dysfunctions. NAR decreased oxidative stress, replenished the antioxidant defense system, and improved histopathological alterations in the AlCl3-treated testes. Therefore, the present study suggests that the supplementation of NAR may be a beneficial strategy to mitigate AlCl3-induced reproductive toxicity and testicular dysfunction.
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Affiliation(s)
- Ravina Rai
- Department of Zoology, School of Biological Sciences, Dr. Harisingh Gour Central University, Sagar, India
| | - Deepali Jat
- Department of Zoology, School of Biological Sciences, Dr. Harisingh Gour Central University, Sagar, India
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Nishizawa-Yokoi A, Motoyama R, Tanaka T, Mori A, Iida K, Toki S. SUPPRESSOR OF GAMMA RESPONSE 1 plays rice-specific roles in DNA damage response and repair. PLANT PHYSIOLOGY 2023; 191:1288-1304. [PMID: 36271862 PMCID: PMC9922390 DOI: 10.1093/plphys/kiac490] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/30/2022] [Accepted: 10/03/2022] [Indexed: 06/16/2023]
Abstract
Land plants are constantly exposed to environmental stresses and have developed complicated defense systems, including DNA damage response (DDR) and DNA repair systems, to protect plant cells. In Arabidopsis (Arabidopsis thaliana), the transcription factor SUPPRESSOR OF GAMMA RESPONSE1 (SOG1) plays a key role in DDR. Here, we focus on DDR in rice (Oryza sativa)-thought to be a simpler system compared with Arabidopsis due to lack of induction of the endocycle even under DNA damage stress. Rice SOG1 (OsSOG1) and SOG1-like (OsSGL) were identified as putative AtSOG1 orthologs with complete or partial conservation of the serine-glutamine motifs involved in activation via phosphorylation. In addition to OsSOG1 or OsSGL knockout mutants, OsSOG1 nonphosphorylatable mutants (OsSOG1-7A) were generated by homologous recombination-mediated gene targeting. Based on the analysis of DNA damage susceptibility and the effect on the expression of DNA repair-related genes using these mutants, we have demonstrated that OsSOG1 plays a more important role than OsSGL in controlling DDR and DNA repair. OsSOG1-regulated target genes via CTT (N)7 AAG motifs reported previously as AtSOG1 recognition sites. The loss of transcription activity of OsSOG1-7A was not complete compared with OsSOG1-knockout mutants, raising the possibility that other phosphorylation sites might be involved in, or that phosphorylation might not be always required for, the activation of OsSOG1. Furthermore, our findings have highlighted differences in SOG1-mediated DDR between rice and Arabidopsis, especially regarding the transcriptional induction of meiosis-specific recombination-related genes and the response of cell cycle-related genes, revealing rice-specific DDR mechanisms.
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Affiliation(s)
- Ayako Nishizawa-Yokoi
- Institute of Agrobiological Sciences, National Agriculture and Food Research Organization (NARO), Tsukuba, Ibaraki 305-8604, Japan
| | - Ritsuko Motoyama
- Institute of Agrobiological Sciences, National Agriculture and Food Research Organization (NARO), Tsukuba, Ibaraki 305-8604, Japan
| | - Tsuyoshi Tanaka
- Research Center for Advanced Analysis, NARO, Tsukuba, Ibaraki 305-8518, Japan
| | - Akiko Mori
- Institute of Agrobiological Sciences, National Agriculture and Food Research Organization (NARO), Tsukuba, Ibaraki 305-8604, Japan
| | - Keiko Iida
- Institute of Agrobiological Sciences, National Agriculture and Food Research Organization (NARO), Tsukuba, Ibaraki 305-8604, Japan
| | - Seiichi Toki
- Institute of Agrobiological Sciences, National Agriculture and Food Research Organization (NARO), Tsukuba, Ibaraki 305-8604, Japan
- Graduate School of Nanobioscience, Yokohama City University, Yokohama, Kanagawa 236-0027, Japan
- Faculty of Agriculture, Ryukoku University, Otsu, Shiga 520-2194, Japan
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8
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Ofoe R, Thomas RH, Asiedu SK, Wang-Pruski G, Fofana B, Abbey L. Aluminum in plant: Benefits, toxicity and tolerance mechanisms. FRONTIERS IN PLANT SCIENCE 2023; 13:1085998. [PMID: 36714730 PMCID: PMC9880555 DOI: 10.3389/fpls.2022.1085998] [Citation(s) in RCA: 12] [Impact Index Per Article: 12.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 10/31/2022] [Accepted: 12/23/2022] [Indexed: 06/18/2023]
Abstract
Aluminum (Al) is the third most ubiquitous metal in the earth's crust. A decrease in soil pH below 5 increases its solubility and availability. However, its impact on plants depends largely on concentration, exposure time, plant species, developmental age, and growing conditions. Although Al can be beneficial to plants by stimulating growth and mitigating biotic and abiotic stresses, it remains unknown how Al mediates these effects since its biological significance in cellular systems is still unidentified. Al is considered a major limiting factor restricting plant growth and productivity in acidic soils. It instigates a series of phytotoxic symptoms in several Al-sensitive crops with inhibition of root growth and restriction of water and nutrient uptake as the obvious symptoms. This review explores advances in Al benefits, toxicity and tolerance mechanisms employed by plants on acidic soils. These insights will provide directions and future prospects for potential crop improvement.
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Affiliation(s)
- Raphael Ofoe
- Department of Plant, Food, and Environmental Sciences, Faculty of Agriculture, Dalhousie University, Bible Hill, NS, Canada
| | - Raymond H. Thomas
- School of Science and the Environment, Memorial University of Newfoundland, Grenfell Campus, Corner Brook, NL, Canada
| | - Samuel K. Asiedu
- Department of Plant, Food, and Environmental Sciences, Faculty of Agriculture, Dalhousie University, Bible Hill, NS, Canada
| | - Gefu Wang-Pruski
- Department of Plant, Food, and Environmental Sciences, Faculty of Agriculture, Dalhousie University, Bible Hill, NS, Canada
| | - Bourlaye Fofana
- Department of Plant, Food, and Environmental Sciences, Faculty of Agriculture, Dalhousie University, Bible Hill, NS, Canada
- Charlottetown Research and Development Centre, Agriculture and Agri-Food Canada, Charlottetown, PE, Canada
| | - Lord Abbey
- Department of Plant, Food, and Environmental Sciences, Faculty of Agriculture, Dalhousie University, Bible Hill, NS, Canada
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Hajiboland R, Panda CK, Lastochkina O, Gavassi MA, Habermann G, Pereira JF. Aluminum Toxicity in Plants: Present and Future. JOURNAL OF PLANT GROWTH REGULATION 2022. [DOI: 10.1007/s00344-022-10866-0] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/09/2022] [Accepted: 10/26/2022] [Indexed: 06/23/2023]
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10
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Siqueira JA, Wakin T, Batista-Silva W, Silva JCF, Vicente MH, Silva JC, Clarindo WR, Zsögön A, Peres LEP, De Veylder L, Fernie AR, Nunes-Nesi A, Araújo WL. A long and stressful day: Photoperiod shapes aluminium tolerance in plants. JOURNAL OF HAZARDOUS MATERIALS 2022; 432:128704. [PMID: 35313159 DOI: 10.1016/j.jhazmat.2022.128704] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/13/2022] [Revised: 03/06/2022] [Accepted: 03/12/2022] [Indexed: 06/14/2023]
Abstract
Aluminium (Al), a limiting factor for crop productivity in acidic soils (pH ≤ 5.5), imposes drastic constraints for food safety in developing countries. The major mechanisms that allow plants to cope with Al involve manipulations of organic acids metabolism and DNA-checkpoints. When assumed individually both approaches have been insufficient to overcome Al toxicity. On analysing the centre of origin of most cultivated plants, we hypothesised that day-length seems to be a pivotal agent modulating Al tolerance across distinct plant species. We observed that with increasing distance from the Equator, Al tolerance decreases, suggesting a relationship with the photoperiod. We verified that long-day (LD) species are generally more Al-sensitive than short-day (SD) species, whereas genetic conversion of tomato for SD growth habit boosts Al tolerance. Reduced Al tolerance correlates with DNA-checkpoint activation under LD. Furthermore, DNA-checkpoint-related genes are under positive selection in Arabidopsis accessions from regions with shorter days, suggesting that photoperiod act as a selective barrier for Al tolerance. A diel regulation and genetic diversity affect Al tolerance, suggesting that day-length orchestrates Al tolerance. Altogether, photoperiodic control of Al tolerance might contribute to solving the historical obstacle that imposes barriers for developing countries to reach a sustainable agriculture.
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Affiliation(s)
- João Antonio Siqueira
- Departamento de Biologia Vegetal, Universidade Federal de Viçosa, Viçosa, MG 36570-900, Brazil
| | - Thiago Wakin
- Departamento de Biologia Vegetal, Universidade Federal de Viçosa, Viçosa, MG 36570-900, Brazil
| | - Willian Batista-Silva
- Departamento de Biologia Vegetal, Universidade Federal de Viçosa, Viçosa, MG 36570-900, Brazil
| | - José Cleydson F Silva
- National Institute of Science and Technology in Plant-Pest Interactions, Bioagro, Universidade Federal de Viçosa, Viçosa, MG 36570-900, Brazil
| | - Matheus H Vicente
- Laboratory of Hormonal Control of Plant Development. Departamento de Ciências Biológicas (LCB), Escola Superior de Agricultura "Luiz de Queiroz", Universidade de São Paulo, Piracicaba, SP 13418-900, Brazil
| | - Jéssica C Silva
- Departamento de Biologia Geral, Universidade Federal de Viçosa, Viçosa, MG 36570-900, Brazil
| | - Wellington R Clarindo
- Departamento de Biologia Geral, Universidade Federal de Viçosa, Viçosa, MG 36570-900, Brazil
| | - Agustin Zsögön
- Departamento de Biologia Vegetal, Universidade Federal de Viçosa, Viçosa, MG 36570-900, Brazil
| | - Lazaro E P Peres
- Laboratory of Hormonal Control of Plant Development. Departamento de Ciências Biológicas (LCB), Escola Superior de Agricultura "Luiz de Queiroz", Universidade de São Paulo, Piracicaba, SP 13418-900, Brazil
| | - Lieven De Veylder
- Department of Plant Biotechnology and Bioinformatics, Ghent University, Ghent B-9052, Belgium; VIB Center for Plant Systems Biology, Ghent B-9052, Belgium
| | - Alisdair R Fernie
- Max-Planck-Institute of Molecular Plant Physiology, Potsdam-Golm 14476, Germany
| | - Adriano Nunes-Nesi
- Departamento de Biologia Vegetal, Universidade Federal de Viçosa, Viçosa, MG 36570-900, Brazil
| | - Wagner L Araújo
- Departamento de Biologia Vegetal, Universidade Federal de Viçosa, Viçosa, MG 36570-900, Brazil.
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11
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Siqueira JA, Silva MF, Wakin T, Nunes-Nesi A, Araújo WL. Metabolic and DNA checkpoints for the enhancement of Al tolerance. JOURNAL OF HAZARDOUS MATERIALS 2022; 430:128366. [PMID: 35168102 DOI: 10.1016/j.jhazmat.2022.128366] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/21/2021] [Revised: 01/04/2022] [Accepted: 01/24/2022] [Indexed: 06/14/2023]
Abstract
Acidic soils are a major limiting factor for food production in many developing countries. High concentrations of soluble Al cations, particularly Al3+, inhibit cell division and root elongation in plants. Al3+ damages several biomolecules, including DNA, impairing gene expression and cell cycle progression. Notably, the loss-of-function mutants of DNA checkpoints may mediate Al tolerance. Furthermore, mitochondrial organic acids play key roles in neutralizing Al3+ within the cell and around the rhizosphere. Here, we provide knowledge synthesis on interactions between checkpoints related to mitochondrial organic acid homeostasis and DNA integrity mediating Al tolerance in land plants. These interactions, coupled with remarkable advances in tools related to metabolism and cell cycle, may facilitate the development of next-generation productive crops under Al toxicity.
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Affiliation(s)
- João Antonio Siqueira
- Departamento de Biologia Vegetal, Universidade Federal de Viçosa, 36570-900 Viçosa, MG, Brazil
| | - Marcelle Ferreira Silva
- Departamento de Biologia Vegetal, Universidade Federal de Viçosa, 36570-900 Viçosa, MG, Brazil
| | - Thiago Wakin
- Departamento de Biologia Vegetal, Universidade Federal de Viçosa, 36570-900 Viçosa, MG, Brazil
| | - Adriano Nunes-Nesi
- Departamento de Biologia Vegetal, Universidade Federal de Viçosa, 36570-900 Viçosa, MG, Brazil
| | - Wagner L Araújo
- Departamento de Biologia Vegetal, Universidade Federal de Viçosa, 36570-900 Viçosa, MG, Brazil.
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12
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McEvoy SL, Sezen UU, Trouern‐Trend A, McMahon SM, Schaberg PG, Yang J, Wegrzyn JL, Swenson NG. Strategies of tolerance reflected in two North American maple genomes. THE PLANT JOURNAL : FOR CELL AND MOLECULAR BIOLOGY 2022; 109:1591-1613. [PMID: 34967059 PMCID: PMC9304320 DOI: 10.1111/tpj.15657] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/05/2021] [Accepted: 12/22/2021] [Indexed: 05/24/2023]
Abstract
The first chromosome‐scale assemblies for North American members of the Acer genus, sugar maple (Acer saccharum) and boxelder (Acer negundo), as well as transcriptomic evaluation of the abiotic stress response in A. saccharum are reported. This integrated study describes in‐depth aspects contributing to each species' approach to tolerance and applies current knowledge in many areas of plant genome biology with Acer physiology to help convey the genomic complexities underlying tolerance in broadleaf tree species.
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Affiliation(s)
- Susan L. McEvoy
- Department of Ecology and Evolutionary BiologyUniversity of ConnecticutStorrsConnecticut06269USA
| | - U. Uzay Sezen
- Smithsonian Environmental Research CenterEdgewaterMaryland21037USA
| | - Alexander Trouern‐Trend
- Department of Ecology and Evolutionary BiologyUniversity of ConnecticutStorrsConnecticut06269USA
| | - Sean M. McMahon
- Smithsonian Environmental Research CenterEdgewaterMaryland21037USA
| | - Paul G. Schaberg
- Forest ServiceU.S. Department of Agriculture, Northern Research StationBurlingtonVermont05405USA
| | - Jie Yang
- CAS Key Laboratory of Tropical Forest Ecology, Xishuangbanna Tropical Botanical GardenChinese Academy of SciencesMengla666303YunnanChina
| | - Jill L. Wegrzyn
- Department of Ecology and Evolutionary BiologyUniversity of ConnecticutStorrsConnecticut06269USA
| | - Nathan G. Swenson
- Department of Biological SciencesUniversity of Notre DameNotre DameIndiana46556USA
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13
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Li J, Liang W, Liu Y, Ren Z, Ci D, Chang J, Qian W. The Arabidopsis ATR-SOG1 signaling module regulates pleiotropic developmental adjustments in response to 3'-blocked DNA repair intermediates. THE PLANT CELL 2022; 34:852-866. [PMID: 34791445 PMCID: PMC8824664 DOI: 10.1093/plcell/koab282] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/11/2021] [Accepted: 11/08/2021] [Indexed: 06/01/2023]
Abstract
Base excision repair and active DNA demethylation produce repair intermediates with DNA molecules blocked at the 3'-OH end by an aldehyde or phosphate group. However, both the physiological consequences of these accumulated single-strand DNAs break with 3'-blocked ends (DNA 3'-blocks) and the signaling pathways responding to unrepaired DNA 3'-blocks remain unclear in plants. Here, we investigated the effects of DNA 3'-blocks on plant development using the zinc finger DNA 3'-phosphoesterase (zdp) AP endonuclease2 (ape2) double mutant, in which 3'-blocking residues are poorly repaired. The accumulation of DNA 3'-blocked triggered diverse developmental defects that were dependent on the ATM and RAD3-related (ATR)-suppressor of gamma response 1 (SOG1) signaling module. SOG1 mutation rescued the developmental defects of zdp ape2 leaves by preventing cell endoreplication and promoting cell proliferation. However, SOG1 mutation caused intensive meristematic cell death in the radicle of zdp ape2 following germination, resulting in rapid termination of radicle growth. Notably, mutating FORMAMIDOPYRIMIDINE DNA GLYCOSYLASE (FPG) in zdp ape2 sog1 partially recovered its radicle growth, demonstrating that DNA 3'-blocks generated by FPG caused the meristematic defects. Surprisingly, despite lacking a functional radicle, zdp ape2 sog1 mutants compensated the lack of root growth by generating anchor roots having low levels of DNA damage response. Our results reveal dual roles of SOG1 in regulating root establishment when seeds germinate with excess DNA 3'-blocks.
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Affiliation(s)
- Jinchao Li
- State Key Laboratory of Protein and Plant Gene Research, Peking-Tsinghua Center for Life Sciences, School of Advanced Agricultural Sciences, Peking University, Beijing 100871, China
- School of Life Sciences, Peking University, Beijing 100871, China
| | - Wenjie Liang
- School of Life Sciences, Peking University, Beijing 100871, China
| | - Yi Liu
- School of Life Sciences, Peking University, Beijing 100871, China
| | - Zhitong Ren
- School of Life Sciences, Peking University, Beijing 100871, China
| | - Dong Ci
- School of Life Sciences, Peking University, Beijing 100871, China
| | - Jinjie Chang
- School of Life Sciences, Peking University, Beijing 100871, China
| | - Weiqiang Qian
- State Key Laboratory of Protein and Plant Gene Research, Peking-Tsinghua Center for Life Sciences, School of Advanced Agricultural Sciences, Peking University, Beijing 100871, China
- School of Life Sciences, Peking University, Beijing 100871, China
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14
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Pedroza-Garcia JA, Xiang Y, De Veylder L. Cell cycle checkpoint control in response to DNA damage by environmental stresses. THE PLANT JOURNAL : FOR CELL AND MOLECULAR BIOLOGY 2022; 109:490-507. [PMID: 34741364 DOI: 10.1111/tpj.15567] [Citation(s) in RCA: 23] [Impact Index Per Article: 11.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/01/2021] [Revised: 10/26/2021] [Accepted: 11/01/2021] [Indexed: 06/13/2023]
Abstract
Being sessile organisms, plants are ubiquitously exposed to stresses that can affect the DNA replication process or cause DNA damage. To cope with these problems, plants utilize DNA damage response (DDR) pathways, consisting of both highly conserved and plant-specific elements. As a part of this DDR, cell cycle checkpoint control mechanisms either pause the cell cycle, to allow DNA repair, or lead cells into differentiation or programmed cell death, to prevent the transmission of DNA errors in the organism through mitosis or to its offspring via meiosis. The two major DDR cell cycle checkpoints control either the replication process or the G2/M transition. The latter is largely overseen by the plant-specific SOG1 transcription factor, which drives the activity of cyclin-dependent kinase inhibitors and MYB3R proteins, which are rate limiting for the G2/M transition. By contrast, the replication checkpoint is controlled by different players, including the conserved kinase WEE1 and likely the transcriptional repressor RBR1. These checkpoint mechanisms are called upon during developmental processes, in retrograde signaling pathways, and in response to biotic and abiotic stresses, including metal toxicity, cold, salinity, and phosphate deficiency. Additionally, the recent expansion of research from Arabidopsis to other model plants has revealed species-specific aspects of the DDR. Overall, it is becoming evidently clear that the DNA damage checkpoint mechanisms represent an important aspect of the adaptation of plants to a changing environment, hence gaining more knowledge about this topic might be helpful to increase the resilience of plants to climate change.
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Affiliation(s)
- José Antonio Pedroza-Garcia
- Department of Plant Biotechnology and Bioinformatics, Ghent University, Ghent, B-9052, Belgium
- Center for Plant Systems Biology, VIB, Ghent, B-9052, Belgium
| | - Yanli Xiang
- Department of Plant Biotechnology and Bioinformatics, Ghent University, Ghent, B-9052, Belgium
- Center for Plant Systems Biology, VIB, Ghent, B-9052, Belgium
| | - Lieven De Veylder
- Department of Plant Biotechnology and Bioinformatics, Ghent University, Ghent, B-9052, Belgium
- Center for Plant Systems Biology, VIB, Ghent, B-9052, Belgium
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15
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Plant Cytogenetics in the Micronuclei Investigation-The Past, Current Status, and Perspectives. Int J Mol Sci 2022; 23:ijms23031306. [PMID: 35163228 PMCID: PMC8836153 DOI: 10.3390/ijms23031306] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/21/2021] [Revised: 01/22/2022] [Accepted: 01/22/2022] [Indexed: 01/27/2023] Open
Abstract
Cytogenetic approaches play an essential role as a quick evaluation of the first genetic effects after mutagenic treatment. Although labor-intensive and time-consuming, they are essential for the analyses of cytotoxic and genotoxic effects in mutagenesis and environmental monitoring. Over the years, conventional cytogenetic analyses were a part of routine laboratory testing in plant genotoxicity. Among the methods that are used to study genotoxicity in plants, the micronucleus test particularly represents a significant force. Currently, cytogenetic techniques go beyond the simple detection of chromosome aberrations. The intensive development of molecular biology and the significantly improved microscopic visualization and evaluation methods constituted significant support to traditional cytogenetics. Over the past years, distinct approaches have allowed an understanding the mechanisms of formation, structure, and genetic activity of the micronuclei. Although there are many studies on this topic in humans and animals, knowledge in plants is significantly limited. This article provides a comprehensive overview of the current knowledge on micronuclei characteristics in plants. We pay particular attention to how the recent contemporary achievements have influenced the understanding of micronuclei in plant cells. Together with the current progress, we present the latest applications of the micronucleus test in mutagenesis and assess the state of the environment.
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16
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Pedroza-Garcia JA, Eekhout T, Achon I, Nisa MU, Coussens G, Vercauteren I, Van den Daele H, Pauwels L, Van Lijsebettens M, Raynaud C, De Veylder L. Maize ATR safeguards genome stability during kernel development to prevent early endosperm endocycle onset and cell death. THE PLANT CELL 2021; 33:2662-2684. [PMID: 34086963 PMCID: PMC8408457 DOI: 10.1093/plcell/koab158] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/24/2020] [Accepted: 05/31/2021] [Indexed: 05/06/2023]
Abstract
The ataxia-telangiectasia mutated (ATM) and ATM and Rad3-related (ATR) kinases coordinate the DNA damage response. The roles described for Arabidopsis thaliana ATR and ATM are assumed to be conserved over other plant species, but molecular evidence is scarce. Here, we demonstrate that the functions of ATR and ATM are only partially conserved between Arabidopsis and maize (Zea mays). In both species, ATR and ATM play a key role in DNA repair and cell cycle checkpoint activation, but whereas Arabidopsis plants do not suffer from the absence of ATR under control growth conditions, maize mutant plants accumulate replication defects, likely due to their large genome size. Moreover, contrarily to Arabidopsis, maize ATM deficiency does not trigger meiotic defects, whereas the ATR kinase appears to be crucial for the maternal fertility. Strikingly, ATR is required to repress premature endocycle onset and cell death in the maize endosperm. Its absence results in a reduction of kernel size, protein and starch content, and a stochastic death of kernels, a process being counteracted by ATM. Additionally, while Arabidopsis atr atm double mutants are viable, no such mutants could be obtained for maize. Therefore, our data highlight that the mechanisms maintaining genome integrity may be more important for vegetative and reproductive development than previously anticipated.
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Affiliation(s)
- Jose Antonio Pedroza-Garcia
- Department of Plant Biotechnology and Bioinformatics, Ghent University, Ghent B-9052, Belgium
- Center for Plant Systems Biology, VIB, Ghent B-9052, Belgium
| | - Thomas Eekhout
- Department of Plant Biotechnology and Bioinformatics, Ghent University, Ghent B-9052, Belgium
- Center for Plant Systems Biology, VIB, Ghent B-9052, Belgium
| | - Ignacio Achon
- Department of Plant Biotechnology and Bioinformatics, Ghent University, Ghent B-9052, Belgium
- Center for Plant Systems Biology, VIB, Ghent B-9052, Belgium
| | - Maher-Un Nisa
- Institute of Plant Sciences Paris-Saclay (IPS2), CNRS, INRA, University Paris-Sud, University of Evry, Paris University, Sorbonne Paris-Cite, University of Paris-Saclay, 91405, Orsay, France
| | - Griet Coussens
- Department of Plant Biotechnology and Bioinformatics, Ghent University, Ghent B-9052, Belgium
- Center for Plant Systems Biology, VIB, Ghent B-9052, Belgium
| | - Ilse Vercauteren
- Department of Plant Biotechnology and Bioinformatics, Ghent University, Ghent B-9052, Belgium
- Center for Plant Systems Biology, VIB, Ghent B-9052, Belgium
| | - Hilde Van den Daele
- Department of Plant Biotechnology and Bioinformatics, Ghent University, Ghent B-9052, Belgium
- Center for Plant Systems Biology, VIB, Ghent B-9052, Belgium
| | - Laurens Pauwels
- Department of Plant Biotechnology and Bioinformatics, Ghent University, Ghent B-9052, Belgium
- Center for Plant Systems Biology, VIB, Ghent B-9052, Belgium
| | - Mieke Van Lijsebettens
- Department of Plant Biotechnology and Bioinformatics, Ghent University, Ghent B-9052, Belgium
- Center for Plant Systems Biology, VIB, Ghent B-9052, Belgium
| | - Cécile Raynaud
- Institute of Plant Sciences Paris-Saclay (IPS2), CNRS, INRA, University Paris-Sud, University of Evry, Paris University, Sorbonne Paris-Cite, University of Paris-Saclay, 91405, Orsay, France
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17
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Nisa M, Bergis C, Pedroza-Garcia JA, Drouin-Wahbi J, Mazubert C, Bergounioux C, Benhamed M, Raynaud C. The plant DNA polymerase theta is essential for the repair of replication-associated DNA damage. THE PLANT JOURNAL : FOR CELL AND MOLECULAR BIOLOGY 2021; 106:1197-1207. [PMID: 33989439 DOI: 10.1111/tpj.15295] [Citation(s) in RCA: 15] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/30/2020] [Revised: 04/15/2021] [Accepted: 04/21/2021] [Indexed: 06/12/2023]
Abstract
Safeguarding of genome integrity is a key process in all living organisms. Due to their sessile lifestyle, plants are particularly exposed to all kinds of stress conditions that could induce DNA damage. However, very few genes involved in the maintenance of genome integrity are indispensable to plants' viability. One remarkable exception is the POLQ gene, which encodes DNA polymerase theta (Pol θ), a non-replicative polymerase involved in trans-lesion synthesis during DNA replication and double-strand break (DSB) repair. The Arabidopsis tebichi (teb) mutants, deficient in Pol θ, have been reported to display severe developmental defects, leading to the conclusion that Pol θ is required for normal plant development. However, this essential role of Pol θ in plants is challenged by contradictory reports regarding the phenotypic defects of teb mutants and the recent finding that rice (Oryza sativa) null mutants develop normally. Here we show that the phenotype of teb mutants is highly variable. Taking advantage of hypomorphic mutants for the replicative DNA polymerase epsilon, which display constitutive replicative stress, we show that Pol θ allows maintenance of meristem activity when DNA replication is partially compromised. Furthermore, we found that the phenotype of Pol θ mutants can be aggravated by modifying their growth conditions, suggesting that environmental conditions impact the basal level of replicative stress and providing evidence for a link between plants' responses to adverse conditions and mechanisms involved in the maintenance of genome integrity.
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Affiliation(s)
- Maherun Nisa
- Institute of Plant Sciences Paris-Saclay (IPS2), Université Paris-Saclay, CNRS, INRAE, Univ Evry, Orsay, 91405, France
- Institute of Plant Sciences Paris Saclay, Université de Paris, CNRS, INRAE, Orsay, (IPS2) 91405, France
| | - Clara Bergis
- Institute of Plant Sciences Paris-Saclay (IPS2), Université Paris-Saclay, CNRS, INRAE, Univ Evry, Orsay, 91405, France
- Institute of Plant Sciences Paris Saclay, Université de Paris, CNRS, INRAE, Orsay, (IPS2) 91405, France
| | - Jose-Antonio Pedroza-Garcia
- Institute of Plant Sciences Paris-Saclay (IPS2), Université Paris-Saclay, CNRS, INRAE, Univ Evry, Orsay, 91405, France
- Institute of Plant Sciences Paris Saclay, Université de Paris, CNRS, INRAE, Orsay, (IPS2) 91405, France
| | - Jeannine Drouin-Wahbi
- Institute of Plant Sciences Paris-Saclay (IPS2), Université Paris-Saclay, CNRS, INRAE, Univ Evry, Orsay, 91405, France
- Institute of Plant Sciences Paris Saclay, Université de Paris, CNRS, INRAE, Orsay, (IPS2) 91405, France
| | - Christelle Mazubert
- Institute of Plant Sciences Paris-Saclay (IPS2), Université Paris-Saclay, CNRS, INRAE, Univ Evry, Orsay, 91405, France
- Institute of Plant Sciences Paris Saclay, Université de Paris, CNRS, INRAE, Orsay, (IPS2) 91405, France
| | - Catherine Bergounioux
- Institute of Plant Sciences Paris-Saclay (IPS2), Université Paris-Saclay, CNRS, INRAE, Univ Evry, Orsay, 91405, France
- Institute of Plant Sciences Paris Saclay, Université de Paris, CNRS, INRAE, Orsay, (IPS2) 91405, France
| | - Moussa Benhamed
- Institute of Plant Sciences Paris-Saclay (IPS2), Université Paris-Saclay, CNRS, INRAE, Univ Evry, Orsay, 91405, France
- Institute of Plant Sciences Paris Saclay, Université de Paris, CNRS, INRAE, Orsay, (IPS2) 91405, France
- Institut Universitaire de France (IUF), France
| | - Cécile Raynaud
- Institute of Plant Sciences Paris-Saclay (IPS2), Université Paris-Saclay, CNRS, INRAE, Univ Evry, Orsay, 91405, France
- Institute of Plant Sciences Paris Saclay, Université de Paris, CNRS, INRAE, Orsay, (IPS2) 91405, France
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18
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Bolaños-Villegas P. The Role of Structural Maintenance of Chromosomes Complexes in Meiosis and Genome Maintenance: Translating Biomedical and Model Plant Research Into Crop Breeding Opportunities. FRONTIERS IN PLANT SCIENCE 2021; 12:659558. [PMID: 33868354 PMCID: PMC8044525 DOI: 10.3389/fpls.2021.659558] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/27/2021] [Accepted: 03/15/2021] [Indexed: 06/06/2023]
Abstract
Cohesin is a multi-unit protein complex from the structural maintenance of chromosomes (SMC) family, required for holding sister chromatids together during mitosis and meiosis. In yeast, the cohesin complex entraps sister DNAs within tripartite rings created by pairwise interactions between the central ring units SMC1 and SMC3 and subunits such as the α-kleisin SCC1 (REC8/SYN1 in meiosis). The complex is an indispensable regulator of meiotic recombination in eukaryotes. In Arabidopsis and maize, the SMC1/SMC3 heterodimer is a key determinant of meiosis. In Arabidopsis, several kleisin proteins are also essential: SYN1/REC8 is meiosis-specific and is essential for double-strand break repair, whereas AtSCC2 is a subunit of the cohesin SCC2/SCC4 loading complex that is important for synapsis and segregation. Other important meiotic subunits are the cohesin EXTRA SPINDLE POLES (AESP1) separase, the acetylase ESTABLISHMENT OF COHESION 1/CHROMOSOME TRANSMISSION FIDELITY 7 (ECO1/CTF7), the cohesion release factor WINGS APART-LIKE PROTEIN 1 (WAPL) in Arabidopsis (AtWAPL1/AtWAPL2), and the WAPL antagonist AtSWITCH1/DYAD (AtSWI1). Other important complexes are the SMC5/SMC6 complex, which is required for homologous DNA recombination during the S-phase and for proper meiotic synapsis, and the condensin complexes, featuring SMC2/SMC4 that regulate proper clustering of rDNA arrays during interphase. Meiotic recombination is the key to enrich desirable traits in commercial plant breeding. In this review, I highlight critical advances in understanding plant chromatid cohesion in the model plant Arabidopsis and crop plants and suggest how manipulation of crossover formation during meiosis, somatic DNA repair and chromosome folding may facilitate transmission of desirable alleles, tolerance to radiation, and enhanced transcription of alleles that regulate sexual development. I hope that these findings highlight opportunities for crop breeding.
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Affiliation(s)
- Pablo Bolaños-Villegas
- Fabio Baudrit Agricultural Research Station, University of Costa Rica, Alajuela, Costa Rica
- Lankester Botanical Garden, University of Costa Rica, Cartago, Costa Rica
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19
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Duan S, Hu L, Dong B, Jin HL, Wang HB. Signaling from Plastid Genome Stability Modulates Endoreplication and Cell Cycle during Plant Development. Cell Rep 2021; 32:108019. [PMID: 32783941 DOI: 10.1016/j.celrep.2020.108019] [Citation(s) in RCA: 16] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/04/2019] [Revised: 04/08/2020] [Accepted: 07/20/2020] [Indexed: 01/10/2023] Open
Abstract
Plastid-nucleus genome coordination is crucial for plastid activity, but the mechanisms remain unclear. By treating Arabidopsis plants with the organellar genome-damaging agent ciprofloxacin, we found that plastid genome instability can alter endoreplication and the cell cycle. Similar results are observed in the plastid genome instability mutants of reca1why1why3. Cell division and embryo development are disturbed in the reca1why1why3 mutant. Notably, SMR5 and SMR7 genes, which encode cell-cycle kinase inhibitors, are upregulated in plastid genome instability plants, and the mutation of SMR7 can restore the endoreplication and growth phenotype of reca1why1why3 plants. Furthermore, we establish that the DNA damage response transcription factor SOG1 mediates the alteration of endoreplication and cell cycle triggered by plastid genome instability. Finally, we demonstrate that reactive oxygen species produced in plastids are important for plastid-nucleus genome coordination. Our findings uncover a molecular mechanism for the coordination of plastid and nuclear genomes during plant growth and development.
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Affiliation(s)
- Sujuan Duan
- State Key Laboratory of Biocontrol and Guangdong Provincial Key Laboratory of Plant Resources, School of Life Sciences, Sun Yat-sen University, 510275 Guangzhou, People's Republic of China; Institute of Medical Plant Physiology and Ecology, School of Pharmaceutical Sciences, Guangzhou University of Chinese Medicine, 510006 Guangzhou, People's Republic of China
| | - Lili Hu
- State Key Laboratory of Biocontrol and Guangdong Provincial Key Laboratory of Plant Resources, School of Life Sciences, Sun Yat-sen University, 510275 Guangzhou, People's Republic of China
| | - Beibei Dong
- State Key Laboratory of Biocontrol and Guangdong Provincial Key Laboratory of Plant Resources, School of Life Sciences, Sun Yat-sen University, 510275 Guangzhou, People's Republic of China
| | - Hong-Lei Jin
- Institute of Medical Plant Physiology and Ecology, School of Pharmaceutical Sciences, Guangzhou University of Chinese Medicine, 510006 Guangzhou, People's Republic of China.
| | - Hong-Bin Wang
- State Key Laboratory of Biocontrol and Guangdong Provincial Key Laboratory of Plant Resources, School of Life Sciences, Sun Yat-sen University, 510275 Guangzhou, People's Republic of China; Institute of Medical Plant Physiology and Ecology, School of Pharmaceutical Sciences, Guangzhou University of Chinese Medicine, 510006 Guangzhou, People's Republic of China.
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20
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Genomic Instability Is an Early Event in Aluminium-Induced Tumorigenesis. Int J Mol Sci 2020; 21:ijms21239332. [PMID: 33297592 PMCID: PMC7730342 DOI: 10.3390/ijms21239332] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/14/2020] [Revised: 11/14/2020] [Accepted: 11/29/2020] [Indexed: 12/05/2022] Open
Abstract
Genomic instability is generally considered as a hallmark of tumorigenesis and a prerequisite condition for malignant transformation. Aluminium salts are suspected environmental carcinogens that transform mammary epithelial cells in vitro through unknown mechanisms. We report here that long-term culture in the presence of aluminium chloride (AlCl3) enables HC11 normal mouse mammary epithelial cells to form tumours and metastases when injected into the syngeneic and immunocompetent BALB/cByJ strain. We demonstrate that AlCl3 rapidly increases chromosomal structural abnormalities in mammary epithelial cells, while we failed to detect direct modulation of specific mRNA pathways. Our observations provide evidence that clastogenic activity—a well-recognized inducer of genomic instability—might account in part for the transforming abilities of aluminium in mammary epithelial cells.
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21
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Jaskowiak J, Kwasniewska J, Szurman-Zubrzycka M, Rojek-Jelonek M, Larsen PB, Szarejko I. Al-Tolerant Barley Mutant hvatr.g Shows the ATR-Regulated DNA Damage Response to Maleic Acid Hydrazide. Int J Mol Sci 2020; 21:ijms21228500. [PMID: 33198069 PMCID: PMC7697149 DOI: 10.3390/ijms21228500] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/14/2020] [Revised: 10/23/2020] [Accepted: 11/10/2020] [Indexed: 11/27/2022] Open
Abstract
ATR, a DNA damage signaling kinase, is required for cell cycle checkpoint regulation and detecting DNA damage caused by genotoxic factors including Al3+ ions. We analyzed the function of the HvATR gene in response to chemical clastogen-maleic acid hydrazide (MH). For this purpose, the Al-tolerant barley TILLING mutant hvatr.g was used. We described the effects of MH on the nuclear genome of hvatr.g mutant and its WT parent cv. “Sebastian”, showing that the genotoxic effect measured by TUNEL test and frequency of cells with micronuclei was much stronger in hvatr.g than in WT. MH caused a significant decrease in the mitotic activity of root cells in both genotypes, however this effect was significantly stronger in “Sebastian”. The impact of MH on the roots cell cycle, analyzed using flow cytometry, showed no differences between the mutant and WT.
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Affiliation(s)
- Joanna Jaskowiak
- Plant Cytogenetics and Molecular Biology Group, Institute of Biology, Biotechnology and Environmental Protection, Faculty of Natural Sciences, University of Silesia in Katowice, Jagiellonska 28, 40-032 Katowice, Poland; (J.J.); (M.R.-J.)
| | - Jolanta Kwasniewska
- Plant Cytogenetics and Molecular Biology Group, Institute of Biology, Biotechnology and Environmental Protection, Faculty of Natural Sciences, University of Silesia in Katowice, Jagiellonska 28, 40-032 Katowice, Poland; (J.J.); (M.R.-J.)
- Correspondence: ; Tel.: +48-32-200-9468
| | - Miriam Szurman-Zubrzycka
- Plant Genetics and Functional Genomics Group, Institute of Biology, Biotechnology and Environmental Protection, Faculty of Natural Sciences, University of Silesia in Katowice, Jagiellonska 28, 40-032 Katowice, Poland; (M.S.-Z.); (I.S.)
| | - Magdalena Rojek-Jelonek
- Plant Cytogenetics and Molecular Biology Group, Institute of Biology, Biotechnology and Environmental Protection, Faculty of Natural Sciences, University of Silesia in Katowice, Jagiellonska 28, 40-032 Katowice, Poland; (J.J.); (M.R.-J.)
| | - Paul B. Larsen
- Department of Biochemistry, University of California, Riverside, CA 92521, USA;
| | - Iwona Szarejko
- Plant Genetics and Functional Genomics Group, Institute of Biology, Biotechnology and Environmental Protection, Faculty of Natural Sciences, University of Silesia in Katowice, Jagiellonska 28, 40-032 Katowice, Poland; (M.S.-Z.); (I.S.)
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22
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Weber M, Beyene B, Nagler N, Herfert J, Schempp S, Klecker M, Clemens S. A mutation in the essential and widely conserved DAMAGED DNA BINDING1-Cullin4 ASSOCIATED FACTOR gene OZS3 causes hypersensitivity to zinc excess, cold and UV stress in Arabidopsis thaliana. THE PLANT JOURNAL : FOR CELL AND MOLECULAR BIOLOGY 2020; 103:995-1009. [PMID: 32314481 DOI: 10.1111/tpj.14779] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/02/2018] [Revised: 02/18/2020] [Accepted: 04/01/2020] [Indexed: 05/28/2023]
Abstract
The overly zinc sensitive Arabidopsis thaliana mutant ozs3 shows reduced growth of the primary root, which is exacerbated by an excess specifically of Zn ions. In addition, ozs3 plants display various subtle developmental phenotypes, such as longer petioles and early flowering. Also, ozs3 seedlings are completely but reversibly growth-arrested when shifted to 4°C. The causal mutation was mapped to a gene encoding a putative substrate-recognition receptor of cullin4 E3 ligases. OZS3 orthologous genes can be found in almost all eukaryotic genomes. Most species from Schizosaccharomyces pombe to Homo sapiens, and including A. thaliana, possess one ortholog. No functional data are available for these genes in any of the multicellular model systems. CRISPR-Cas9-mediated knockout demonstrated that a complete loss of OZS3 function is embryo-lethal, indicating essentiality of OZS3 and its orthologs. The OZS3 protein interacts with the adaptor protein DAMAGED DNA BINDING1 (DDB1) in the nucleus. Thus, it is indeed a member of the large yet poorly characterized family of DDB1-cullin4 associated factors in plants. Mutant phenotypes of ozs3 plants are apparently caused by the weakened DDB1-OZS3 interaction as a result of the exchange of a conserved amino acid near the conserved WDxR motif.
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Affiliation(s)
- Michael Weber
- Department of Plant Physiology, University of Bayreuth, Bayreuth, 95440, Germany
| | - Blen Beyene
- Department of Plant Physiology, University of Bayreuth, Bayreuth, 95440, Germany
| | - Nicole Nagler
- Department of Plant Physiology, University of Bayreuth, Bayreuth, 95440, Germany
| | - Jörn Herfert
- Department of Plant Physiology, University of Bayreuth, Bayreuth, 95440, Germany
| | - Stefanie Schempp
- Department of Plant Physiology, University of Bayreuth, Bayreuth, 95440, Germany
| | - Maria Klecker
- Department of Plant Physiology, University of Bayreuth, Bayreuth, 95440, Germany
| | - Stephan Clemens
- Department of Plant Physiology, University of Bayreuth, Bayreuth, 95440, Germany
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23
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Freeland J, Zhang L, Wang ST, Ruiz M, Wang Y. Bent DNA Bows as Sensing Amplifiers for Detecting DNA-Interacting Salts and Molecules. SENSORS (BASEL, SWITZERLAND) 2020; 20:E3112. [PMID: 32486417 PMCID: PMC7309149 DOI: 10.3390/s20113112] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 05/05/2020] [Revised: 05/23/2020] [Accepted: 05/29/2020] [Indexed: 01/20/2023]
Abstract
Due to the central role of DNA, its interactions with inorganic salts and small organic molecules are important. For example, such interactions play important roles in various fundamental cellular processes in living systems and are involved in many DNA-damage related diseases. Strategies to improve the sensitivity of existing techniques for studying DNA interactions with other molecules would be appreciated in situations where the interactions are too weak. Here we report our development and demonstration of bent DNA bows for amplifying, sensing, and detecting the interactions of 14 inorganic salts and small organic molecules with DNA. With the bent DNA bows, these interactions were easily visualized and quantified in gel electrophoresis, which were difficult to measure without bending. In addition, the strength of the interactions of DNA with the various salts/molecules were quantified using the modified Hill equation. This work highlights the amplification effects of the bending elastic energy stored in the DNA bows and the potential use of the DNA bows for quantitatively measuring DNA interactions with small molecules as simple economic methods; it may also pave the way for exploiting the bent DNA bows for other applications such as screening DNA-interacting molecules and drugs.
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Affiliation(s)
- Jack Freeland
- Department of Physics, University of Arkansas, Fayetteville, AR 72701, USA; (J.F.); (M.R.)
- Department of Chemistry and Biochemistry, University of Arkansas, Fayetteville, AR 72701, USA
| | - Lihua Zhang
- Center for Functional Nanomaterials, Brookhaven National Laboratory, Upton, NY 11973, USA; (L.Z.); (S.-T.W.)
| | - Shih-Ting Wang
- Center for Functional Nanomaterials, Brookhaven National Laboratory, Upton, NY 11973, USA; (L.Z.); (S.-T.W.)
| | - Mason Ruiz
- Department of Physics, University of Arkansas, Fayetteville, AR 72701, USA; (J.F.); (M.R.)
- Department of Biology, University of Arkansas, Fayetteville, AR 72701, USA
| | - Yong Wang
- Department of Physics, University of Arkansas, Fayetteville, AR 72701, USA; (J.F.); (M.R.)
- Cell and Molecular Biology Program, University of Arkansas, Fayetteville, AR 72701, USA
- Microelectronics-Photonics Program, University of Arkansas, Fayetteville, AR 72701, USA
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24
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Jin JF, Wang ZQ, He QY, Wang JY, Li PF, Xu JM, Zheng SJ, Fan W, Yang JL. Genome-wide identification and expression analysis of the NAC transcription factor family in tomato (Solanum lycopersicum) during aluminum stress. BMC Genomics 2020; 21:288. [PMID: 32264854 PMCID: PMC7140551 DOI: 10.1186/s12864-020-6689-7] [Citation(s) in RCA: 50] [Impact Index Per Article: 12.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/18/2019] [Accepted: 03/19/2020] [Indexed: 01/28/2023] Open
Abstract
Background The family of NAC proteins (NAM, ATAF1/2, and CUC2) represent a class of large plant-specific transcription factors. However, identification and functional surveys of NAC genes of tomato (Solanum lycopersicum) remain unstudied, despite the tomato genome being decoded for several years. This study aims to identify the NAC gene family and investigate their potential roles in responding to Al stress. Results Ninety-three NAC genes were identified and named in accordance with their chromosome location. Phylogenetic analysis found SlNACs are broadly distributed in 5 groups. Gene expression analysis showed that SlNACs had different expression levels in various tissues and at different fruit development stages. Cycloheximide treatment and qRT-PCR analysis indicated that SlNACs may aid regulation of tomato in response to Al stress, 19 of which were significantly up- or down-regulated in roots of tomato following Al stress. Conclusion This work establishes a knowledge base for further studies on biological functions of SlNACs in tomato and will aid in improving agricultural traits of tomato in the future.
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Affiliation(s)
- Jian Feng Jin
- State Key Laboratory of Plant Physiology and Biochemistry, Institute of Plant Biology, College of Life Sciences, Zhejiang University, Hangzhou, 310058, China
| | - Zhan Qi Wang
- Key Laboratory of Vector Biology and Pathogen Control of Zhejiang Province, College of Life Sciences, Huzhou University, Huzhou, 313000, China
| | - Qi Yu He
- State Key Laboratory of Plant Physiology and Biochemistry, Institute of Plant Biology, College of Life Sciences, Zhejiang University, Hangzhou, 310058, China
| | - Jia Yi Wang
- State Key Laboratory of Plant Physiology and Biochemistry, Institute of Plant Biology, College of Life Sciences, Zhejiang University, Hangzhou, 310058, China
| | - Peng Fei Li
- State Key Laboratory of Plant Physiology and Biochemistry, Institute of Plant Biology, College of Life Sciences, Zhejiang University, Hangzhou, 310058, China
| | - Ji Ming Xu
- State Key Laboratory of Plant Physiology and Biochemistry, Institute of Plant Biology, College of Life Sciences, Zhejiang University, Hangzhou, 310058, China
| | - Shao Jian Zheng
- State Key Laboratory of Plant Physiology and Biochemistry, Institute of Plant Biology, College of Life Sciences, Zhejiang University, Hangzhou, 310058, China
| | - Wei Fan
- College of Resources and Environment, Yunnan Agricultural University, Kunming, 650201, China
| | - Jian Li Yang
- State Key Laboratory of Plant Physiology and Biochemistry, Institute of Plant Biology, College of Life Sciences, Zhejiang University, Hangzhou, 310058, China.
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25
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Jalili P, Huet S, Lanceleur R, Jarry G, Hegarat LL, Nesslany F, Hogeveen K, Fessard V. Genotoxicity of Aluminum and Aluminum Oxide Nanomaterials in Rats Following Oral Exposure. NANOMATERIALS (BASEL, SWITZERLAND) 2020; 10:E305. [PMID: 32053952 PMCID: PMC7075173 DOI: 10.3390/nano10020305] [Citation(s) in RCA: 27] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 01/09/2020] [Revised: 01/27/2020] [Accepted: 02/02/2020] [Indexed: 02/06/2023]
Abstract
Due to several gaps remaining in the toxicological evaluation of nanomaterials (NMs), consumers and public health agencies have shown increasing concern for human health protection. In addition to aluminum (Al) microparticles, Al-containing nanomaterials (Al NMs) have been applied by food industry as additives and contact materials. Due to the limited amount of literature on the toxicity of Al NMs, this study aimed to evaluate the in vivo genotoxic potential of Al0 and Al2O3 NMs after acute oral exposure. Male Sprague-Dawley rats were administered three successive gavages at 6, 12.5 and 25 mg/kg bw. A comparison with AlCl3 was done in order to assess the potential effect of dissolution into Al ions. Both DNA strand breaks and oxidative DNA damage were investigated in six organs/tissues (duodenum, liver, kidney, spleen, blood and bone marrow) with the alkaline and the Fpg-modified comet assays. Concomitantly, chromosomal damage was investigated in bone marrow and colon with the micronucleus assay. The comet assay only showed DNA damage with Al2O3 NMs in bone marrow (BM), while AlCl3 induced slight but non-significant oxidative DNA damage in blood. No increase of chromosomal mutations was observed after treatment with the two Al MNs either in the BM or in the colons of rats.
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Affiliation(s)
- Pégah Jalili
- Unité de Toxicologie des Contaminants, Agence Nationale de Sécurité Sanitaire (ANSES), 10 B rue Claude Bourgelat, 35306 Fougères, France (S.H.); (R.L.); (G.J.); (L.L.H.); (K.H.)
| | - Sylvie Huet
- Unité de Toxicologie des Contaminants, Agence Nationale de Sécurité Sanitaire (ANSES), 10 B rue Claude Bourgelat, 35306 Fougères, France (S.H.); (R.L.); (G.J.); (L.L.H.); (K.H.)
| | - Rachelle Lanceleur
- Unité de Toxicologie des Contaminants, Agence Nationale de Sécurité Sanitaire (ANSES), 10 B rue Claude Bourgelat, 35306 Fougères, France (S.H.); (R.L.); (G.J.); (L.L.H.); (K.H.)
| | - Gérard Jarry
- Unité de Toxicologie des Contaminants, Agence Nationale de Sécurité Sanitaire (ANSES), 10 B rue Claude Bourgelat, 35306 Fougères, France (S.H.); (R.L.); (G.J.); (L.L.H.); (K.H.)
| | - Ludovic Le Hegarat
- Unité de Toxicologie des Contaminants, Agence Nationale de Sécurité Sanitaire (ANSES), 10 B rue Claude Bourgelat, 35306 Fougères, France (S.H.); (R.L.); (G.J.); (L.L.H.); (K.H.)
| | - Fabrice Nesslany
- Institut Pasteur de Lille, Laboratoire de toxicologie génétique, 1 Rue du Professeur Calmette, 59019 Lille CEDEX, France;
| | - Kevin Hogeveen
- Unité de Toxicologie des Contaminants, Agence Nationale de Sécurité Sanitaire (ANSES), 10 B rue Claude Bourgelat, 35306 Fougères, France (S.H.); (R.L.); (G.J.); (L.L.H.); (K.H.)
| | - Valérie Fessard
- Unité de Toxicologie des Contaminants, Agence Nationale de Sécurité Sanitaire (ANSES), 10 B rue Claude Bourgelat, 35306 Fougères, France (S.H.); (R.L.); (G.J.); (L.L.H.); (K.H.)
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26
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Yang JL, Fan W, Zheng SJ. Mechanisms and regulation of aluminum-induced secretion of organic acid anions from plant roots. J Zhejiang Univ Sci B 2019; 20:513-527. [PMID: 31090277 DOI: 10.1631/jzus.b1900188] [Citation(s) in RCA: 35] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Abstract
Aluminum (Al) is the most abundant metal element in the earth's crust. On acid soils, at pH 5.5 or lower, part of insoluble Al-containing minerals become solubilized into soil solution, with resultant highly toxic effects on plant growth and development. Nevertheless, some plants have developed Al-tolerance mechanisms that enable them to counteract this Al toxicity. One such well-documented mechanism is the Al-induced secretion of organic acid anions, including citrate, malate, and oxalate, from plant roots. Once secreted, these anions chelate external Al ions, thus protecting the secreting plant from Al toxicity. Genes encoding the citrate and malate transporters responsible for secretion have been identified and characterized, and accumulating evidence indicates that regulation of the expression of these transporter genes is critical for plant Al tolerance. In this review, we outline the recent history of research into plant Al-tolerance mechanisms, with special emphasis on the physiology of Al-induced secretion of organic acid anions from plant roots. In particular, we summarize the identification of genes encoding organic acid transporters and review current understanding of genes regulating organic acid secretion. We also discuss the possible signaling pathways regulating the expression of organic acid transporter genes.
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Affiliation(s)
- Jian-Li Yang
- Institute of Plant Biology, College of Life Sciences, Zhejiang University, Hangzhou 310058, China
| | - Wei Fan
- Laboratory of Agricultural Resources and Environment, College of Resources and Environment, Yunnan Agricultural University, Kunming 650201, China
| | - Shao-Jian Zheng
- Institute of Plant Biology, College of Life Sciences, Zhejiang University, Hangzhou 310058, China
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27
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Jaskowiak J, Kwasniewska J, Milewska-Hendel A, Kurczynska EU, Szurman-Zubrzycka M, Szarejko I. Aluminum Alters the Histology and Pectin Cell Wall Composition of Barley Roots. Int J Mol Sci 2019; 20:ijms20123039. [PMID: 31234423 PMCID: PMC6628276 DOI: 10.3390/ijms20123039] [Citation(s) in RCA: 23] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/29/2019] [Revised: 06/17/2019] [Accepted: 06/19/2019] [Indexed: 01/05/2023] Open
Abstract
Aluminum (Al) is one of the most important crust elements causing reduced plant production in acidic soils. Barley (Hordeum vulgare L.) is considered to be one of the crops that is most sensitive to Al, and the root cell wall is the primary target of Al toxicity. In this study, we evaluate the possible involvement of specific pectic epitopes in the cells of barley roots in response to aluminum exposure. We targeted four different pectic epitopes recognized by LM5, LM6, LM19, and LM20 antibodies using an immunocytochemical approach. Since Al becomes available and toxic to plants in acidic soils, we performed our analyses on barley roots that had been grown in acidic conditions (pH 4.0) with and without Al and in control conditions (pH 6.0). Differences connected with the presence and distribution of the pectic epitopes between the control and Al-treated roots were observed. In the Al-treated roots, pectins with galactan sidechains were detected with a visually lower fluorescence intensity than in the control roots while pectins with arabinan sidechains were abundantly present. Furthermore, esterified homogalacturonans (HGs) were present with a visually higher fluorescence intensity compared to the control, while methyl-esterified HGs were present in a similar amount. Based on the presented results, it was concluded that methyl-esterified HG can be a marker for newly arising cell walls. Additionally, histological changes were detected in the roots grown under Al exposure. Among them, an increase in root diameter, shortening of root cap, and increase in the size of rhizodermal cells and divisions of exodermal and cortex cells were observed. The presented data extend upon the knowledge on the chemical composition of the cell wall of barley root cells under stress conditions. The response of cells to Al can be expressed by the specific distribution of pectins in the cell wall and, thus, enables the knowledge on Al toxicity to be extended by explaining the mechanism by which Al inhibits root elongation.
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Affiliation(s)
- Joanna Jaskowiak
- Department of Plant Anatomy and Cytology, University of Silesia in Katowice, Jagiellonska 28, 40-032 Katowice, Poland.
| | - Jolanta Kwasniewska
- Department of Plant Anatomy and Cytology, University of Silesia in Katowice, Jagiellonska 28, 40-032 Katowice, Poland.
| | - Anna Milewska-Hendel
- Department of Cell Biology, University of Silesia in Katowice, Jagiellonska 28, 40-032 Katowice, Poland.
| | - Ewa Urszula Kurczynska
- Department of Cell Biology, University of Silesia in Katowice, Jagiellonska 28, 40-032 Katowice, Poland.
| | - Miriam Szurman-Zubrzycka
- Department of Genetics, University of Silesia in Katowice, Jagiellonska 28, 40-032 Katowice, Poland.
| | - Iwona Szarejko
- Department of Genetics, University of Silesia in Katowice, Jagiellonska 28, 40-032 Katowice, Poland.
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28
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Nisa MU, Huang Y, Benhamed M, Raynaud C. The Plant DNA Damage Response: Signaling Pathways Leading to Growth Inhibition and Putative Role in Response to Stress Conditions. FRONTIERS IN PLANT SCIENCE 2019; 10:653. [PMID: 31164899 PMCID: PMC6534066 DOI: 10.3389/fpls.2019.00653] [Citation(s) in RCA: 114] [Impact Index Per Article: 22.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/01/2019] [Accepted: 04/30/2019] [Indexed: 05/02/2023]
Abstract
Maintenance of genome integrity is a key issue for all living organisms. Cells are constantly exposed to DNA damage due to replication or transcription, cellular metabolic activities leading to the production of Reactive Oxygen Species (ROS) or even exposure to DNA damaging agents such as UV light. However, genomes remain extremely stable, thanks to the permanent repair of DNA lesions. One key mechanism contributing to genome stability is the DNA Damage Response (DDR) that activates DNA repair pathways, and in the case of proliferating cells, stops cell division until DNA repair is complete. The signaling mechanisms of the DDR are quite well conserved between organisms including in plants where they have been investigated into detail over the past 20 years. In this review we summarize the acquired knowledge and recent advances regarding the DDR control of cell cycle progression. Studying the plant DDR is particularly interesting because of their mode of development and lifestyle. Indeed, plants develop largely post-embryonically, and form new organs through the activity of meristems in which cells retain the ability to proliferate. In addition, they are sessile organisms that are permanently exposed to adverse conditions that could potentially induce DNA damage in all cell types including meristems. In the second part of the review we discuss the recent findings connecting the plant DDR to responses to biotic and abiotic stresses.
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