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Hassani SB, Latifi M, Aliniaeifard S, Sohrabi Bonab S, Nasiri Almanghadim N, Jafari S, Mohebbifar E, Ahangir A, Seifikalhor M, Rezadoost H, Bosacchi M, Rastogi A, Bernard F. Response to Cadmium Toxicity: Orchestration of Polyamines and microRNAs in Maize Plant. PLANTS (BASEL, SWITZERLAND) 2023; 12:1991. [PMID: 37653908 PMCID: PMC10223431 DOI: 10.3390/plants12101991] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/21/2023] [Revised: 04/13/2023] [Accepted: 05/10/2023] [Indexed: 09/02/2023]
Abstract
Cadmium (Cd) is a heavy metal that is widely contaminating the environment due to its uses in industries as corrosive reagents, paints, batteries, etc. Cd can easily be absorbed through plant roots and may have serious negative impacts on plant growth. To investigate the mechanisms utilized by plants to cope with Cd toxicity, an experiment was conducted on maize seedlings. We observed that the plant growth and photosynthetic mechanism were negatively influenced during 20 days of Cd stress. The expression levels of ornithine decarboxylase (ORDC) increased in the six seedlings under Cd exposure compared to the control. However, Cd toxicity led to an increase in putrescine (Put) content only on day 15 when compared to the control plants. In fact, with the exception of day 15, the increases in the ORDC transcript levels did not show a direct correlation with the observed increases in Put content. Spermidine and Spermine levels were reduced on day 6 by Cd application, which was parallel with suppressed Spermidine synthase gene. However, an increase in Spermidine and Spermine levels was observed on day 12 along with a significant elevation in Spermidine synthase expression. On day 6, Cd was observed to start accumulating in the root with an increase in the expression of microRNA 528; while on day 15, Cd started to be observed in the shoot part with an increase in microRNA 390 and microRNA 168. These results imply that different miRNAs may regulate polyamines (PAs) in maize under Cd toxicity, suggesting a plant-derived strategy to commit a PAs/miRNA-regulated mechanism/s in different developmental stages (time points) in response to Cd exposure.
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Affiliation(s)
- Seyedeh Batool Hassani
- Department of Plant Sciences and Biotechnology, Faculty of Life Sciences and Biotechnology, Shahid Beheshti University, Tehran 19839-69411, Iran; (S.B.H.)
| | - Mojgan Latifi
- Department of Plant Sciences and Biotechnology, Faculty of Life Sciences and Biotechnology, Shahid Beheshti University, Tehran 19839-69411, Iran; (S.B.H.)
| | - Sasan Aliniaeifard
- Photosynthesis Laboratory, Department of Horticulture, College of Agricultural Technology (Aburaihan), University of Tehran, Tehran 33916-53755, Iran
| | - Shabnam Sohrabi Bonab
- Department of Plant Sciences and Biotechnology, Faculty of Life Sciences and Biotechnology, Shahid Beheshti University, Tehran 19839-69411, Iran; (S.B.H.)
| | - Neda Nasiri Almanghadim
- Department of Plant Sciences and Biotechnology, Faculty of Life Sciences and Biotechnology, Shahid Beheshti University, Tehran 19839-69411, Iran; (S.B.H.)
| | - Sara Jafari
- Department of Plant Sciences and Biotechnology, Faculty of Life Sciences and Biotechnology, Shahid Beheshti University, Tehran 19839-69411, Iran; (S.B.H.)
| | - Elham Mohebbifar
- Department of Plant Sciences and Biotechnology, Faculty of Life Sciences and Biotechnology, Shahid Beheshti University, Tehran 19839-69411, Iran; (S.B.H.)
| | - Anahita Ahangir
- Department of Plant Sciences and Biotechnology, Faculty of Life Sciences and Biotechnology, Shahid Beheshti University, Tehran 19839-69411, Iran; (S.B.H.)
| | | | - Hassan Rezadoost
- Department of Phytochemistry, Medicinal Plants and Drugs Research Institute, Shahid Beheshti University, Tehran 19839-69411, Iran
| | - Massimo Bosacchi
- Park at the Danforth Plant Science Center, KWS Gateway Research Center, LLC, BRDG, Saint Louis, MO 95618, USA
| | - Anshu Rastogi
- Laboratory of Bioclimatology, Department of Ecology and Environmental Protection, Faculty of Environmental Engineering and Mechanical Engineering, Poznan University of Life Sciences, Piątkowska 94, 60-649 Poznań, Poland
| | - Françoise Bernard
- Department of Plant Sciences and Biotechnology, Faculty of Life Sciences and Biotechnology, Shahid Beheshti University, Tehran 19839-69411, Iran; (S.B.H.)
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Zand Karimi H, Baldrich P, Rutter BD, Borniego L, Zajt KK, Meyers BC, Innes RW. Arabidopsis apoplastic fluid contains sRNA- and circular RNA-protein complexes that are located outside extracellular vesicles. THE PLANT CELL 2022; 34:1863-1881. [PMID: 35171271 PMCID: PMC9048913 DOI: 10.1093/plcell/koac043] [Citation(s) in RCA: 56] [Impact Index Per Article: 28.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/04/2021] [Accepted: 12/14/2021] [Indexed: 05/21/2023]
Abstract
Previously, we have shown that apoplastic wash fluid (AWF) purified from Arabidopsis leaves contains small RNAs (sRNAs). To investigate whether these sRNAs are encapsulated inside extracellular vesicles (EVs), we treated EVs isolated from Arabidopsis leaves with the protease trypsin and RNase A, which should degrade RNAs located outside EVs but not those located inside. These analyses revealed that apoplastic RNAs are mostly located outside and are associated with proteins. Further analyses of these extracellular RNAs (exRNAs) revealed that they include both sRNAs and long noncoding RNAs (lncRNAs), including circular RNAs (circRNAs). We also found that exRNAs are highly enriched in the posttranscriptional modification N6-methyladenine (m6A). Consistent with this, we identified a putative m6A-binding protein in AWF, GLYCINE-RICH RNA-BINDING PROTEIN 7 (GRP7), as well as the sRNA-binding protein ARGONAUTE2 (AGO2). These two proteins coimmunoprecipitated with lncRNAs, including circRNAs. Mutation of GRP7 or AGO2 caused changes in both the sRNA and lncRNA content of AWF, suggesting that these proteins contribute to the secretion and/or stabilization of exRNAs. We propose that exRNAs located outside of EVs mediate host-induced gene silencing, rather than RNA located inside EVs.
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Affiliation(s)
- Hana Zand Karimi
- Department of Biology, Indiana University, Bloomington 47405, Indiana, USA
| | | | - Brian D Rutter
- Department of Biology, Indiana University, Bloomington 47405, Indiana, USA
| | - Lucía Borniego
- Department of Biology, Indiana University, Bloomington 47405, Indiana, USA
| | - Kamil K Zajt
- Department of Biology, Indiana University, Bloomington 47405, Indiana, USA
| | - Blake C Meyers
- Donald Danforth Plant Science Center, St Louis 63132, Missouri, USA
- Division of Plant Sciences, University of Missouri-Columbia, Columbia 65211, Missouri, USA
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Hou J, Lu D, Mason AS, Li B, An S, Li G, Cai D. Distribution of MITE family Monkey King in rapeseed (Brassica napus L) and its influence on gene expression. Genomics 2021; 113:2934-2943. [PMID: 34182079 DOI: 10.1016/j.ygeno.2021.06.034] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/28/2020] [Revised: 05/06/2021] [Accepted: 06/24/2021] [Indexed: 10/21/2022]
Abstract
Miniature inverted-repeat transposable elements (MITEs) are a group of class II transposable elements. The MITE Monkey King (MK) was first discovered upstream of BnFLC.A10. In this study, genome resequencing of four selected B. napus accessions, revealed more than 4000 distributed copies of MKs constituting ~2.4 Mb of the B. napus genomic sequence and caused 677 polymorphisms among the four accessions. MK -polymorphism-related markers across 128 natural and 58 synthetic accessions revealed more polymorphic MKs in natural than synthetic accessions. Ten MK -induced indels significantly affected the expression levels of the nearest gene based on RNAseq analysis, six of these effects were subsequently confirmed using qRT-PCR. Decreased expression pattern of MK -derived miRNA-bna-miR6031 was also observed under various stress treatments. Further research focused on the MITE families should promote not only our understanding of gene regulatory networks but also inform crop improvement efforts.
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Affiliation(s)
- Jinna Hou
- Henan Academy of Agricultural Sciences, Zhengzhou 450002, China.
| | - Dandan Lu
- Henan Academy of Agricultural Sciences, Zhengzhou 450002, China
| | - Annaliese S Mason
- Chair of Plant Breeding, Institute of Crop Science and Resource Conservation, University of Bonn, Bonn, Germany.
| | - Baoquan Li
- Henan Academy of Agricultural Sciences, Zhengzhou 450002, China
| | - Sufang An
- Henan Academy of Agricultural Sciences, Zhengzhou 450002, China
| | - Gaoyuan Li
- Bioinformatic Institute, Huazhong Agricultural University, Wuhan 430071, China.
| | - Dongfang Cai
- Henan Academy of Agricultural Sciences, Zhengzhou 450002, China.
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Pirrello C, Mizzotti C, Tomazetti TC, Colombo M, Bettinelli P, Prodorutti D, Peressotti E, Zulini L, Stefanini M, Angeli G, Masiero S, Welter LJ, Hausmann L, Vezzulli S. Emergent Ascomycetes in Viticulture: An Interdisciplinary Overview. FRONTIERS IN PLANT SCIENCE 2019; 10:1394. [PMID: 31824521 PMCID: PMC6883492 DOI: 10.3389/fpls.2019.01394] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/13/2019] [Accepted: 10/09/2019] [Indexed: 05/23/2023]
Abstract
The reduction of pesticide usage is a current imperative and the implementation of sustainable viticulture is an urgent necessity. A potential solution, which is being increasingly adopted, is offered by the use of grapevine cultivars resistant to its main pathogenic threats. This, however, has contributed to changes in defense strategies resulting in the occurrence of secondary diseases, which were previously controlled. Concomitantly, the ongoing climate crisis is contributing to destabilizing the increasingly dynamic viticultural context. In this review, we explore the available knowledge on three Ascomycetes which are considered emergent and causal agents of powdery mildew, black rot and anthracnose. We also aim to provide a survey on methods for phenotyping disease symptoms in fields, greenhouse and lab conditions, and for disease control underlying the insurgence of pathogen resistance to fungicide. Thus, we discuss fungal genetic variability, highlighting the usage and development of molecular markers and barcoding, coupled with genome sequencing. Moreover, we extensively report on the current knowledge available on grapevine-ascomycete interactions, as well as the mechanisms developed by the host to counteract the attack. Indeed, to better understand these resistance mechanisms, it is relevant to identify pathogen effectors which are involved in the infection process and how grapevine resistance genes function and impact the downstream cascade. Dealing with such a wealth of information on both pathogens and the host, the horizon is now represented by multidisciplinary approaches, combining traditional and innovative methods of cultivation. This will support the translation from theory to practice, in an attempt to understand biology very deeply and manage the spread of these Ascomycetes.
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Affiliation(s)
- Carlotta Pirrello
- Research and Innovation Centre, Fondazione Edmund Mach, San Michele all’Adige, Italy
- Department of Agricultural, Food, Environmental and Animal Sciences, University of Udine, Udine, Italy
| | - Chiara Mizzotti
- Department of Biosciences, University of Milan, Milan, Italy
| | - Tiago C. Tomazetti
- Center of Agricultural Sciences, Federal University of Santa Catarina, Rodovia Admar Gonzaga, Florianópolis, Brazil
| | - Monica Colombo
- Research and Innovation Centre, Fondazione Edmund Mach, San Michele all’Adige, Italy
| | - Paola Bettinelli
- Research and Innovation Centre, Fondazione Edmund Mach, San Michele all’Adige, Italy
| | - Daniele Prodorutti
- Technology Transfer Centre, Fondazione Edmund Mach, San Michele all’Adige, Italy
| | - Elisa Peressotti
- Research and Innovation Centre, Fondazione Edmund Mach, San Michele all’Adige, Italy
| | - Luca Zulini
- Research and Innovation Centre, Fondazione Edmund Mach, San Michele all’Adige, Italy
| | - Marco Stefanini
- Research and Innovation Centre, Fondazione Edmund Mach, San Michele all’Adige, Italy
| | - Gino Angeli
- Technology Transfer Centre, Fondazione Edmund Mach, San Michele all’Adige, Italy
| | - Simona Masiero
- Department of Biosciences, University of Milan, Milan, Italy
| | - Leocir J. Welter
- Department of Natural and Social Sciences, Federal University of Santa Catarina, Campus of Curitibanos, Rodovia Ulysses Gaboardi, Curitibanos, Brazil
| | - Ludger Hausmann
- Julius Kühn Institute (JKI), Institute for Grapevine Breeding Geilweilerhof, Siebeldingen, Germany
| | - Silvia Vezzulli
- Research and Innovation Centre, Fondazione Edmund Mach, San Michele all’Adige, Italy
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Sanz-Carbonell A, Marques MC, Bustamante A, Fares MA, Rodrigo G, Gomez G. Inferring the regulatory network of the miRNA-mediated response to biotic and abiotic stress in melon. BMC PLANT BIOLOGY 2019; 19:78. [PMID: 30777009 PMCID: PMC6379984 DOI: 10.1186/s12870-019-1679-0] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/06/2018] [Accepted: 02/07/2019] [Indexed: 05/29/2023]
Abstract
BACKGROUND MiRNAs have emerged as key regulators of stress response in plants, suggesting their potential as candidates for knock-in/out to improve stress tolerance in agricultural crops. Although diverse assays have been performed, systematic and detailed studies of miRNA expression and function during exposure to multiple environments in crops are limited. RESULTS Here, we present such pioneering analysis in melon plants in response to seven biotic and abiotic stress conditions. Deep-sequencing and computational approaches have identified twenty-four known miRNAs whose expression was significantly altered under at least one stress condition, observing that down-regulation was preponderant. Additionally, miRNA function was characterized by high scale degradome assays and quantitative RNA measurements over the intended target mRNAs, providing mechanistic insight. Clustering analysis provided evidence that eight miRNAs showed a broad response range under the stress conditions analyzed, whereas another eight miRNAs displayed a narrow response range. Transcription factors were predominantly targeted by stress-responsive miRNAs in melon. Furthermore, our results show that the miRNAs that are down-regulated upon stress predominantly have as targets genes that are known to participate in the stress response by the plant, whereas the miRNAs that are up-regulated control genes linked to development. CONCLUSION Altogether, this high-resolution analysis of miRNA-target interactions, combining experimental and computational work, Illustrates the close interplay between miRNAs and the response to diverse environmental conditions, in melon.
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Affiliation(s)
- Alejandro Sanz-Carbonell
- Institute for Integrative Systems Biology (I2SysBio), Consejo Superior de Investigaciones Científicas (CSIC) - Universitat de València (UV), Parc Científic, Cat. Agustín Escardino 9, 46980 Paterna, Spain
- Instituto de Biología Molecular y Celular de Plantas (IBMCP), Consejo Superior de Investigaciones Científicas (CSIC) - Universidad Politécnica de Valencia (UPV), CPI 8E, Av. de los Naranjos s/n, 46022 Valencia, Spain
| | - María Carmen Marques
- Institute for Integrative Systems Biology (I2SysBio), Consejo Superior de Investigaciones Científicas (CSIC) - Universitat de València (UV), Parc Científic, Cat. Agustín Escardino 9, 46980 Paterna, Spain
- Instituto de Biología Molecular y Celular de Plantas (IBMCP), Consejo Superior de Investigaciones Científicas (CSIC) - Universidad Politécnica de Valencia (UPV), CPI 8E, Av. de los Naranjos s/n, 46022 Valencia, Spain
| | - Antonio Bustamante
- Institute for Integrative Systems Biology (I2SysBio), Consejo Superior de Investigaciones Científicas (CSIC) - Universitat de València (UV), Parc Científic, Cat. Agustín Escardino 9, 46980 Paterna, Spain
- Instituto Nacional de Investigaciones Agropecuarias (INIAP), Estación Experimental Pichilingue, Km5 vía Quevedo El Empalme, Mocache, Ecuador
| | - Mario A. Fares
- Institute for Integrative Systems Biology (I2SysBio), Consejo Superior de Investigaciones Científicas (CSIC) - Universitat de València (UV), Parc Científic, Cat. Agustín Escardino 9, 46980 Paterna, Spain
- Instituto de Biología Molecular y Celular de Plantas (IBMCP), Consejo Superior de Investigaciones Científicas (CSIC) - Universidad Politécnica de Valencia (UPV), CPI 8E, Av. de los Naranjos s/n, 46022 Valencia, Spain
| | - Guillermo Rodrigo
- Institute for Integrative Systems Biology (I2SysBio), Consejo Superior de Investigaciones Científicas (CSIC) - Universitat de València (UV), Parc Científic, Cat. Agustín Escardino 9, 46980 Paterna, Spain
- Instituto de Biología Molecular y Celular de Plantas (IBMCP), Consejo Superior de Investigaciones Científicas (CSIC) - Universidad Politécnica de Valencia (UPV), CPI 8E, Av. de los Naranjos s/n, 46022 Valencia, Spain
| | - Gustavo Gomez
- Institute for Integrative Systems Biology (I2SysBio), Consejo Superior de Investigaciones Científicas (CSIC) - Universitat de València (UV), Parc Científic, Cat. Agustín Escardino 9, 46980 Paterna, Spain
- Instituto de Biología Molecular y Celular de Plantas (IBMCP), Consejo Superior de Investigaciones Científicas (CSIC) - Universidad Politécnica de Valencia (UPV), CPI 8E, Av. de los Naranjos s/n, 46022 Valencia, Spain
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Lastochkina O, Aliniaeifard S, Seifikalhor M, Yuldashev R, Pusenkova L, Garipova S. Plant Growth-Promoting Bacteria: Biotic Strategy to Cope with Abiotic Stresses in Wheat. WHEAT PRODUCTION IN CHANGING ENVIRONMENTS 2019:579-614. [DOI: 10.1007/978-981-13-6883-7_23] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/23/2023]
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Wang Z, Xia Y, Lin S, Wang Y, Guo B, Song X, Ding S, Zheng L, Feng R, Chen S, Bao Y, Sheng C, Zhang X, Wu J, Niu D, Jin H, Zhao H. Osa-miR164a targets OsNAC60 and negatively regulates rice immunity against the blast fungus Magnaporthe oryzae. THE PLANT JOURNAL : FOR CELL AND MOLECULAR BIOLOGY 2018; 95:584-597. [PMID: 29775494 DOI: 10.1111/tpj.13972] [Citation(s) in RCA: 82] [Impact Index Per Article: 13.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/05/2018] [Revised: 04/12/2018] [Accepted: 05/02/2018] [Indexed: 05/11/2023]
Abstract
Exploring the regulatory mechanism played by endogenous rice miRNAs in defense responses against the blast disease is of great significance in both resistant variety breeding and disease control management. We identified rice defense-related miRNAs by comparing rice miRNA expression patterns before and after Magnaporthe oryzae strain Guy11 infection. We discovered that osa-miR164a expression reduced upon Guy11 infection at both early and late stages, which was perfectly associated with the induced expression of its target gene, OsNAC60. OsNAC60 encodes a transcription factor, over-expression of which enhanced defense responses, such as increased programmed cell death, greater ion leakage, more reactive oxygen species accumulation and callose deposition, and upregulation of defense-related genes. By using transgenic rice over-expressing osa-miR164a, and a transposon insertion mutant of OsNAC60, we showed that when the miR164a/OsNAC60 regulatory module was dysfunctional, rice developed significant susceptibility to Guy11 infection. The co-expression of OsNAC60 and osa-miR164a abolished the OsNAC60 activity, but not its synonymous mutant. We further validated that this regulatory module is conserved in plant resistance to multiple plant diseases, such as the rice sheath blight, tomato late blight, and soybean root and stem rot diseases. Our results demonstrate that the miR164a/OsNAC60 regulatory module manipulates rice defense responses to M. oryzae infection. This discovery is of great potential for resistant variety breeding and disease control to a broad spectrum of pathogens in the future.
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Affiliation(s)
- Zhaoyun Wang
- Department of Plant Pathology, College of Plant Protection, Nanjing Agricultural University, Nanjing, 210095, China
- The Key Laboratory of Integrated Management of Crop Diseases and Pests, Ministry of Education, Nanjing, Jiangsu, 210095, China
| | - Yeqiang Xia
- Department of Plant Pathology, College of Plant Protection, Nanjing Agricultural University, Nanjing, 210095, China
- The Key Laboratory of Integrated Management of Crop Diseases and Pests, Ministry of Education, Nanjing, Jiangsu, 210095, China
| | - Siyuan Lin
- Department of Plant Pathology, College of Plant Protection, Nanjing Agricultural University, Nanjing, 210095, China
- The Key Laboratory of Integrated Management of Crop Diseases and Pests, Ministry of Education, Nanjing, Jiangsu, 210095, China
| | - Yanru Wang
- Department of Plant Pathology, College of Plant Protection, Nanjing Agricultural University, Nanjing, 210095, China
- The Key Laboratory of Integrated Management of Crop Diseases and Pests, Ministry of Education, Nanjing, Jiangsu, 210095, China
| | - Baohuan Guo
- Department of Plant Pathology, College of Plant Protection, Nanjing Agricultural University, Nanjing, 210095, China
- The Key Laboratory of Integrated Management of Crop Diseases and Pests, Ministry of Education, Nanjing, Jiangsu, 210095, China
| | - Xiaoning Song
- Department of Plant Pathology, College of Plant Protection, Nanjing Agricultural University, Nanjing, 210095, China
- The Key Laboratory of Integrated Management of Crop Diseases and Pests, Ministry of Education, Nanjing, Jiangsu, 210095, China
| | - Shaochen Ding
- Department of Plant Pathology, College of Plant Protection, Nanjing Agricultural University, Nanjing, 210095, China
- The Key Laboratory of Integrated Management of Crop Diseases and Pests, Ministry of Education, Nanjing, Jiangsu, 210095, China
| | - Liyu Zheng
- Department of Plant Pathology, College of Plant Protection, Nanjing Agricultural University, Nanjing, 210095, China
- The Key Laboratory of Integrated Management of Crop Diseases and Pests, Ministry of Education, Nanjing, Jiangsu, 210095, China
| | - Ruiying Feng
- Department of Plant Pathology, College of Plant Protection, Nanjing Agricultural University, Nanjing, 210095, China
- The Key Laboratory of Integrated Management of Crop Diseases and Pests, Ministry of Education, Nanjing, Jiangsu, 210095, China
| | - Shulin Chen
- Department of Plant Pathology, College of Plant Protection, Nanjing Agricultural University, Nanjing, 210095, China
- The Key Laboratory of Integrated Management of Crop Diseases and Pests, Ministry of Education, Nanjing, Jiangsu, 210095, China
| | - Yalin Bao
- Department of Plant Pathology, College of Plant Protection, Nanjing Agricultural University, Nanjing, 210095, China
- The Key Laboratory of Integrated Management of Crop Diseases and Pests, Ministry of Education, Nanjing, Jiangsu, 210095, China
| | - Cong Sheng
- Department of Plant Pathology, College of Plant Protection, Nanjing Agricultural University, Nanjing, 210095, China
- The Key Laboratory of Integrated Management of Crop Diseases and Pests, Ministry of Education, Nanjing, Jiangsu, 210095, China
| | - Xin Zhang
- Department of Plant Pathology, College of Plant Protection, Nanjing Agricultural University, Nanjing, 210095, China
- The Key Laboratory of Integrated Management of Crop Diseases and Pests, Ministry of Education, Nanjing, Jiangsu, 210095, China
| | - Jianguo Wu
- Fujian Province Key Laboratory of Plant Virology, Institute of Plant Virology, Fujian Agriculture and Forestry University, Fuzhou, China
| | - Dongdong Niu
- Department of Plant Pathology, College of Plant Protection, Nanjing Agricultural University, Nanjing, 210095, China
- The Key Laboratory of Integrated Management of Crop Diseases and Pests, Ministry of Education, Nanjing, Jiangsu, 210095, China
| | - Hailing Jin
- Department of Plant Pathology and Microbiology, University of California, Riverside, CA, 92521, USA
| | - Hongwei Zhao
- Department of Plant Pathology, College of Plant Protection, Nanjing Agricultural University, Nanjing, 210095, China
- The Key Laboratory of Integrated Management of Crop Diseases and Pests, Ministry of Education, Nanjing, Jiangsu, 210095, China
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Bao D, Ganbaatar O, Cui X, Yu R, Bao W, Falk BW, Wuriyanghan H. Down-regulation of genes coding for core RNAi components and disease resistance proteins via corresponding microRNAs might be correlated with successful Soybean mosaic virus infection in soybean. MOLECULAR PLANT PATHOLOGY 2018; 19:948-960. [PMID: 28695996 PMCID: PMC6638018 DOI: 10.1111/mpp.12581] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/19/2017] [Revised: 06/30/2017] [Accepted: 07/06/2017] [Indexed: 05/20/2023]
Abstract
Plants protect themselves from virus infections by several different defence mechanisms. RNA interference (RNAi) is one prominent antiviral mechanism, which requires the participation of AGO (Argonaute) and Dicer/DCL (Dicer-like) proteins. Effector-triggered immunity (ETI) is an antiviral mechanism mediated by resistance (R) genes, most of which encode nucleotide-binding site-leucine-rich repeat (NBS-LRR) family proteins. MicroRNAs (miRNAs) play important regulatory roles in plants, including the regulation of host defences. Soybean mosaic virus (SMV) is the most common virus in soybean and, in this work, we identified dozens of SMV-responsive miRNAs by microarray analysis in an SMV-susceptible soybean line. Amongst the up-regulated miRNAs, miR168a, miR403a, miR162b and miR1515a predictively regulate the expression of AGO1, AGO2, DCL1 and DCL2, respectively, and miR1507a, miR1507c and miR482a putatively regulate the expression of several NBS-LRR family disease resistance genes. The regulation of target gene expression by these seven miRNAs was validated by both transient expression assays and RNA ligase-mediated rapid amplification of cDNA ends (RLM-RACE) experiments. Transcript levels for AGO1, DCL1, DCL2 and five NBS-LRR family genes were repressed at different time points after SMV infection, whereas the corresponding miRNA levels were up-regulated at these same time points. Furthermore, inhibition of miR1507a, miR1507c, miR482a, miR168a and miR1515a by short tandem target mimic (STTM) technology compromised SMV infection efficiency in soybean. Our results imply that SMV can counteract soybean defence responses by the down-regulation of several RNAi pathway genes and NBS-LRR family resistance genes via the induction of the accumulation of their corresponding miRNA levels.
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Affiliation(s)
- Duran Bao
- School of Life Sciences, University of Inner MongoliaHohhotInner Mongolia 010021, China
| | - Oyunchuluun Ganbaatar
- School of Life Sciences, University of Inner MongoliaHohhotInner Mongolia 010021, China
| | - Xiuqi Cui
- School of Life Sciences, University of Inner MongoliaHohhotInner Mongolia 010021, China
| | - Ruonan Yu
- School of Life Sciences, University of Inner MongoliaHohhotInner Mongolia 010021, China
| | - Wenhua Bao
- School of Life Sciences, University of Inner MongoliaHohhotInner Mongolia 010021, China
| | - Bryce W. Falk
- Department of Plant PathologyUniversity of California DavisDavisCA 95616USA
| | - Hada Wuriyanghan
- School of Life Sciences, University of Inner MongoliaHohhotInner Mongolia 010021, China
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Wang S, Zheng Y, Gu C, He C, Yang M, Zhang X, Guo J, Zhao H, Niu D. Bacillus cereus AR156 Activates Defense Responses to Pseudomonas syringae pv. tomato in Arabidopsis thaliana Similarly to flg22. MOLECULAR PLANT-MICROBE INTERACTIONS : MPMI 2018; 31:311-322. [PMID: 29090631 DOI: 10.1094/mpmi-10-17-0240-r] [Citation(s) in RCA: 20] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/24/2023]
Abstract
Bacillus cereus AR156 (AR156) is a plant growth-promoting rhizobacterium capable of inducing systemic resistance to Pseudomonas syringae pv. tomato in Arabidopsis thaliana. Here, we show that, when applied to Arabidopsis leaves, AR156 acted similarly to flg22, a typical pathogen-associated molecular pattern (PAMP), in initiating PAMP-triggered immunity (PTI). AR156-elicited PTI responses included phosphorylation of MPK3 and MPK6, induction of the expression of defense-related genes PR1, FRK1, WRKY22, and WRKY29, production of reactive oxygen species, and callose deposition. Pretreatment with AR156 still significantly reduced P. syringae pv. tomato multiplication and disease severity in NahG transgenic plants and mutants sid2-2, jar1, etr1, ein2, npr1, and fls2. This suggests that AR156-induced PTI responses require neither salicylic acid, jasmonic acid, and ethylene signaling nor flagella receptor kinase FLS2, the receptor of flg22. On the other hand, AR156 and flg22 acted in concert to differentially regulate a number of AGO1-bound microRNAs that function to mediate PTI. A full-genome transcriptional profiling analysis indicated that AR156 and flg22 activated similar transcriptional programs, coregulating the expression of 117 genes; their concerted regulation of 16 genes was confirmed by real-time quantitative polymerase chain reaction analysis. These results suggest that AR156 activates basal defense responses to P. syringae pv. tomato in Arabidopsis, similarly to flg22.
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Affiliation(s)
- Shune Wang
- 1 College of Plant Protection, Nanjing Agricultural University, Nanjing 210095, China
- 2 Key Laboratory of Integrated Management of Crop Diseases and Pests (Nanjing Agricultural University), Ministry of Education; and
| | - Ying Zheng
- 1 College of Plant Protection, Nanjing Agricultural University, Nanjing 210095, China
- 2 Key Laboratory of Integrated Management of Crop Diseases and Pests (Nanjing Agricultural University), Ministry of Education; and
| | - Chun Gu
- 3 Jiangsu Provincial Anfeng Biogenic Pesticide Engineering Center Co., Ltd., Taicang 215400, China
| | - Chan He
- 1 College of Plant Protection, Nanjing Agricultural University, Nanjing 210095, China
- 2 Key Laboratory of Integrated Management of Crop Diseases and Pests (Nanjing Agricultural University), Ministry of Education; and
| | - Mengying Yang
- 1 College of Plant Protection, Nanjing Agricultural University, Nanjing 210095, China
- 2 Key Laboratory of Integrated Management of Crop Diseases and Pests (Nanjing Agricultural University), Ministry of Education; and
| | - Xin Zhang
- 1 College of Plant Protection, Nanjing Agricultural University, Nanjing 210095, China
- 2 Key Laboratory of Integrated Management of Crop Diseases and Pests (Nanjing Agricultural University), Ministry of Education; and
| | - Jianhua Guo
- 1 College of Plant Protection, Nanjing Agricultural University, Nanjing 210095, China
- 2 Key Laboratory of Integrated Management of Crop Diseases and Pests (Nanjing Agricultural University), Ministry of Education; and
| | - Hongwei Zhao
- 1 College of Plant Protection, Nanjing Agricultural University, Nanjing 210095, China
- 2 Key Laboratory of Integrated Management of Crop Diseases and Pests (Nanjing Agricultural University), Ministry of Education; and
| | - Dongdong Niu
- 1 College of Plant Protection, Nanjing Agricultural University, Nanjing 210095, China
- 2 Key Laboratory of Integrated Management of Crop Diseases and Pests (Nanjing Agricultural University), Ministry of Education; and
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10
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Niu D, Xia J, Jiang C, Qi B, Ling X, Lin S, Zhang W, Guo J, Jin H, Zhao H. Bacillus cereus AR156 primes induced systemic resistance by suppressing miR825/825* and activating defense-related genes in Arabidopsis. JOURNAL OF INTEGRATIVE PLANT BIOLOGY 2016; 58:426-39. [PMID: 26526683 PMCID: PMC5028193 DOI: 10.1111/jipb.12446] [Citation(s) in RCA: 34] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/08/2015] [Accepted: 10/27/2015] [Indexed: 05/21/2023]
Abstract
Small RNAs play an important role in plant immune responses. However, their regulatory function in induced systemic resistance (ISR) is nascent. Bacillus cereus AR156 is a plant growth-promoting rhizobacterium that induces ISR in Arabidopsis against bacterial infection. Here, by comparing small RNA profiles of Pseudomonas syringae pv. tomato (Pst) DC3000-infected Arabidopsis with and without AR156 pretreatment, we identified a group of Arabidopsis microRNAs (miRNAs) that are differentially regulated by AR156 pretreatment. miR825 and miR825* are two miRNA generated from a single miRNA gene. Northern blot analysis indicated that they were significantly downregulated in Pst DC3000-infected plants pretreated with AR156, in contrast to the plants without AR156 pretreatment. miR825 targets two ubiquitin-protein ligases, while miR825* targets toll-interleukin-like receptor (TIR)-nucleotide binding site (NBS) and leucine-rich repeat (LRR) type resistance (R) genes. The expression of these target genes negatively correlated with the expression of miR825 and miR825*. Moreover, transgenic plants showing reduced expression of miR825 and miR825* displayed enhanced resistance to Pst DC3000 infection, whereas transgenic plants overexpressing miR825 and miR825* were more susceptible. Taken together, our data indicates that Bacillus cereus AR156 pretreatment primes ISR to Pst infection by suppressing miR825 and miR825* and activating the defense related genes they targeted.
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Affiliation(s)
- Dongdong Niu
- Department of Plant Pathology, College of Plant Protection, Nanjing Agriculture University, Nanjing 210095, China
- Department of Plant Pathology and Microbiology, Center for Plant Cell Biology and Institute for Integrative Genome Biology, University of California, Riverside, California, CA-92521, USA
| | - Jing Xia
- Department of Computer Science and Engineering, Washington University in St Louis, St Louis, Missouri 63130, USA
- The Institute for Systems Biology, Jianghan University, Wuhan 430056, China
| | - Chunhao Jiang
- Department of Plant Pathology, College of Plant Protection, Nanjing Agriculture University, Nanjing 210095, China
| | - Beibei Qi
- Department of Plant Pathology, College of Plant Protection, Nanjing Agriculture University, Nanjing 210095, China
| | - Xiaoyu Ling
- Department of Plant Pathology, College of Plant Protection, Nanjing Agriculture University, Nanjing 210095, China
| | - Siyuan Lin
- Department of Plant Pathology, College of Plant Protection, Nanjing Agriculture University, Nanjing 210095, China
| | - Weixiong Zhang
- Department of Computer Science and Engineering, Washington University in St Louis, St Louis, Missouri 63130, USA
| | - Jianhua Guo
- Department of Plant Pathology, College of Plant Protection, Nanjing Agriculture University, Nanjing 210095, China
| | - Hailing Jin
- Department of Plant Pathology and Microbiology, Center for Plant Cell Biology and Institute for Integrative Genome Biology, University of California, Riverside, California, CA-92521, USA
| | - Hongwei Zhao
- Department of Plant Pathology, College of Plant Protection, Nanjing Agriculture University, Nanjing 210095, China
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11
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da Graça JV, Douhan GW, Halbert SE, Keremane ML, Lee RF, Vidalakis G, Zhao H. Huanglongbing: An overview of a complex pathosystem ravaging the world's citrus. JOURNAL OF INTEGRATIVE PLANT BIOLOGY 2016; 58:373-87. [PMID: 26466921 DOI: 10.1111/jipb.12437] [Citation(s) in RCA: 141] [Impact Index Per Article: 17.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/17/2015] [Accepted: 10/12/2015] [Indexed: 05/24/2023]
Abstract
Citrus huanglongbing (HLB) has become a major disease and limiting factor of production in citrus areas that have become infected. The destruction to the affected citrus industries has resulted in a tremendous increase to support research that in return has resulted in significant information on both applied and basic knowledge concerning this important disease to the global citrus industry. Recent research indicates the relationship between citrus and the causal agent of HLB is shaped by multiple elements, in which host defense responses may also play an important role. This review is intended to provide an overview of the importance of HLB to a wider audience of plant biologists. Recent advances on host-pathogen interactions, population genetics and vectoring of the causal agent are discussed.
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Affiliation(s)
- John V da Graça
- Texas A&M University-Kingsville Citrus Center, Weslaco, Texas 78599, USA
| | - Greg W Douhan
- Department of Plant Pathology and Microbiology, University of California, Riverside, California 92521, USA
| | - Susan E Halbert
- Florida Department of Agriculture and Consumer Services, Division of Plant Industry, P.O. Box 147100, Gainesville, Florida 32614, USA
| | - Manjunath L Keremane
- USDA ARS National Clonal Germplasm Repository for Citrus and Dates, Riverside, California 92507, USA
| | - Richard F Lee
- USDA ARS National Clonal Germplasm Repository for Citrus and Dates, Riverside, California 92507, USA
| | - Georgios Vidalakis
- Department of Plant Pathology and Microbiology, University of California, Riverside, California 92521, USA
| | - Hongwei Zhao
- College of Plant Protection, Nanjing Agricultural University, Nanjing 210095, China
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