Dr Arvind Varsani Current Address
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Beet Curly Top Virus Strains Associated with Sugar Beet in Idaho, Oregon, and a Western U.S
Plant Disease • 2017 • 101:1373-1382 • http://dx.doi.org/10.1094/PDIS-03-17-0381-RE Beet curly top virus Strains Associated with Sugar Beet in Idaho, Oregon, and a Western U.S. Collection Carl A. Strausbaugh and Imad A. Eujayl, United States Department of Agriculture–Agricultural Research Service (USDA-ARS) Northwest Irrigation and Soils Research Laboratory, Kimberly, ID 83341; and William M. Wintermantel, USDA-ARS, Salinas, CA 93905 Abstract Curly top of sugar beet is a serious, yield-limiting disease in semiarid pro- Logan) strains and primers that amplified a group of Worland (Wor)- duction areas caused by Beet curly top virus (BCTV) and transmitted like strains. The BCTV strain distribution averaged 2% Svr, 30% CA/ by the beet leafhopper. One of the primary means of control for BCTV Logan, and 87% Wor-like (16% had mixed infections), which differed in sugar beet is host resistance but effectiveness of resistance can vary from the previously published 2006-to-2007 collection (87% Svr, 7% among BCTV strains. Strain prevalence among BCTV populations CA/Logan, and 60% Wor-like; 59% mixed infections) based on a contin- was last investigated in Idaho and Oregon during a 2006-to-2007 collec- gency test (P < 0.0001). Whole-genome sequencing (GenBank acces- tion but changes in disease severity suggested a need for reevaluation. sions KT276895 to KT276920 and KX867015 to KX867057) with Therefore, 406 leaf samples symptomatic for curly top were collected overlapping primers found that the Wor-like strains included Wor, Colo- from sugar beet plants in commercial sugar beet fields in Idaho and rado and a previously undescribed strain designated Kimberly1. -
Geminiviruses Encode Additional Small Proteins with Specific
ARTICLE https://doi.org/10.1038/s41467-021-24617-4 OPEN Geminiviruses encode additional small proteins with specific subcellular localizations and virulence function Pan Gong 1,6, Huang Tan 2,3,6, Siwen Zhao1, Hao Li1, Hui Liu4,YuMa2,3, Xi Zhang2,3, Junjie Rong2,3, Xing Fu2, ✉ ✉ ✉ Rosa Lozano-Durán 2,5 , Fangfang Li1 & Xueping Zhou 1,4 1234567890():,; Geminiviruses are plant viruses with limited coding capacity. Geminivirus-encoded proteins are traditionally identified by applying a 10-kDa arbitrary threshold; however, it is increasingly clear that small proteins play relevant roles in biological systems, which calls for the reconsideration of this criterion. Here, we show that geminiviral genomes contain additional ORFs. Using tomato yellow leaf curl virus, we demonstrate that some of these small ORFs are expressed during the infection, and that the encoded proteins display specific subcellular localizations. We prove that the largest of these additional ORFs, which we name V3, is required for full viral infection, and that the V3 protein localizes in the Golgi apparatus and functions as an RNA silencing suppressor. These results imply that the repertoire of gemi- niviral proteins can be expanded, and that getting a comprehensive overview of the molecular plant-geminivirus interactions will require the detailed study of small ORFs so far neglected. 1 State Key Laboratory for Biology of Plant Diseases and Insect Pests, Institute of Plant Protection, Chinese Academy of Agricultural Sciences, Beijing, China. 2 Shanghai Center for Plant Stress Biology, CAS Center for Excellence in Molecular Plant Sciences, Chinese Academy of Sciences, Shanghai, China. 3 University of the Chinese Academy of Sciences, Beijing, China. -
Ocorrência Natural De Espécies Virais E Avaliação De Potenciais Hospedeiras Experimentais De Begomovírus, Potyvírus E Tospovírus Em Plantas Arbóreas E Berinjela
UNIVERSIDADE DE BRASÍLIA INSTITUTO DE CIÊNCIAS BIOLÓGICAS DEPARTAMENTO DE FITOPATOLOGIA PROGRAMA DE PÓS-GRADUAÇÃO EM FITOPATOLOGIA Ocorrência natural de espécies virais e avaliação de potenciais hospedeiras experimentais de begomovírus, potyvírus e tospovírus em plantas arbóreas e berinjela (Solanum melongena) JOSIANE GOULART BATISTA Brasília - DF 2014 JOSIANE GOULART BATISTA Ocorrência natural de espécies virais e avaliação de potenciais hospedeiras experimentais de begomovírus, potyvírus e tospovírus em plantas arbóreas e berinjela (Solanum melongena) Dissertação apresentada à Universidade de Brasília como requisito parcial para a obtenção do título de Mestre em Fitopatologia pelo Programa de Pós Graduação em Fitopatologia. Orientadora Dra. Rita de Cássia Pereira Carvalho BRASÍLIA DISTRITO FEDERAL – BRASIL 2014 FICHA CATALOGRÁFICA Batista, G.J. Ocorrência natural de espécies virais e avaliação de potenciais hospedeiras experimentais de begomovírus, potyvírus e tospovírus em plantas arbóreas e berinjela (Solanum melongena). Josiane Goulart Batista. Brasília, 2014 Número de páginas p.: 183 Dissertação de mestrado - Programa de Pós-Graduação em Fitopatologia, Universidade de Brasília, Brasília. Árvores, berinjela, vírus, resistência. I. Universidade de Brasília. PPG/FIT. II. Título. Ocorrência natural de espécies virais e avaliação de potenciais hospedeiras experimentais de begomovírus, potyvírus e tospovírus em plantas arbóreas e berinjela (Solanum melongena). Dedico a minha pequena linda filha Giovanna, ao meu pai Josvaldo, a minha mãe Nelma, ao meu namorado Airton, a minha irmã Josefa e minha sobrinha Júlia. Agradecimentos A Deus. Aos meus pais Josvaldo e Nelma. A minha filha Giovanna, minha irmã Josefa e minha sobrinha Júlia. A minha orientadora Professora Rita de Cássia. Aos colegas do mestrado e doutorado Rafaela, Marcella, Juliana, Ícaro, Cléia, Monica, Elenice, William, Rayane e Nédio. -
Suivi De La Thèse
UNIVERSITE OUAGA I UNIVERSITÉ DE LA PR JOSEPH KI-ZERBO RÉUNION ---------- ---------- Unité de Formation et de Recherche Faculté des Sciences et Sciences de la Vie et de la Terre Technologies UMR Peuplements Végétaux et Bio-agresseurs en Milieu Tropical CIRAD – Université de La Réunion INERA – LMI Patho-Bios THÈSE EN COTUTELLE Pour obtenir le diplôme de Doctorat en Sciences Epidémiologie moléculaire des géminivirus responsables de maladies émergentes sur les cultures maraîchères au Burkina Faso par Alassane Ouattara Soutenance le 14 Décembre 2017, devant le jury composé de Stéphane POUSSIER Professeur, Université de La Réunion Président Justin PITA Professeur, Université Houphouët-Boigny, Côte d'Ivoire Rapporteur Philippe ROUMAGNAC Chercheur HDR, CIRAD, UMR BGPI, France Rapporteur Fidèle TIENDREBEOGO Chercheur, INERA, Burkina Faso Examinateur Nathalie BECKER Maître de conférences HDR MNHN, UMR ISYEB, France Examinatrice Jean-Michel LETT Chercheur HDR, CIRAD, UMR PVBMT, La Réunion Co-Directeur de thèse Nicolas BARRO Professeur, Université Ouagadougou, Burkina Faso Co-Directeur de thèse DEDICACES A mon épouse Dadjata et à mon fils Jaad Kaamil: merci pour l’amour, les encouragements et la compréhension tout au long de ces trois années. A mon père Kassoum, à ma mère Salimata, à ma belle-mère Bila, à mon oncle Soumaïla et son épouse Abibata : merci pour votre amour, j’ai toujours reçu soutien, encouragements et bénédictions de votre part. Puisse Dieu vous garder en bonne santé ! REMERCIEMENTS Mes remerciements vont à l’endroit du personnel des Universités Ouaga I Pr Joseph KI- ZERBO et de La Réunion pour avoir accepté mon inscription. Je remercie les différents financeurs de mes travaux : l’AIRD (Projet PEERS-EMEB), l’Union Européenne (ERDF), le Conseil Régional de La Réunion et le Cirad (Bourse Cirad-Sud). -
Development of Novel Detection System for Sweet Potato Leaf Curl
www.nature.com/scientificreports OPEN Development of novel detection system for sweet potato leaf curl virus using recombinant scFv Sang-Ho Cho1,6, Eui-Joon Kil1,2,6, Sungrae Cho1, Hee-Seong Byun1,3, Eun-Ha Kang1, Hong-Soo Choi3, Mi-Gi Lee4, Jong Suk Lee4, Young-Gyu Lee5 ✉ & Sukchan Lee 1 ✉ Sweet potato leaf curl virus (SPLCV) causes yield losses in sweet potato cultivation. Diagnostic techniques such as serological detection have been developed because these plant viruses are difcult to treat. Serological assays have been used extensively with recombinant antibodies such as whole immunoglobulin or single-chain variable fragments (scFv). An scFv consists of variable heavy (VH) and variable light (VL) chains joined with a short, fexible peptide linker. An scFv can serve as a diagnostic application using various combinations of variable chains. Two SPLCV-specifc scFv clones, F7 and G7, were screened by bio-panning process with a yeast cell which expressed coat protein (CP) of SPLCV. The scFv genes were subcloned and expressed in Escherichia coli. The binding afnity and characteristics of the expressed proteins were confrmed by enzyme-linked immunosorbent assay using SPLCV-infected plant leaves. Virus-specifc scFv selection by a combination of yeast-surface display and scFv-phage display can be applied to detection of any virus. Te sweet potato (Ipomoea batatas L.) ranks among the world’s seven most important food crops, along with wheat, rice, maize, potato, barley, and cassava1,2. Because sweet potatoes propagate vegetatively, rather than through seeds, they are vulnerable to many diseases, including viruses3. Once infected with a virus, successive vegetative propagation can increase the intensity and incidence of a disease, resulting in uneconomical yields. -
Centro De Investigación Y De Estudios Avanzados Del Instituto Politécnico Nacional
Centro de Investigación y de Estudios Avanzados del Instituto Politécnico Nacional Unidad Irapuato Estudio del Minicromosoma de PepGMV durante su Ciclo Infectivo en Capsicum annuum Para obtener el grado de Doctora en Ciencias En la especialidad de Biotecnología de plantas Presenta Esther Adriana Ceniceros Ojeda Dirigida por Dr. Rafael Francisco Rivera Bustamante Irapuato, Gto. México Junio 2016 El presente trabajo se realizó en el Departamento de Ingeniería Genética del Centro de Investigación y de Estudios Avanzados del Instituto Politécnico Nacional, Unidad Irapuato. Bajo la dirección del Dr. Rafael Francisco Rivera Bustamante en el laboratorio de Virología Vegetal. Agradezco al Consejo Nacional de Ciencia y Tecnología (CONACYT) por la beca 204167 otorgada durante el desarrollo de la presente Tesis doctoral en el Centro de Investigación y de Estudios Avanzados del Instituto Politécnico Nacional, Unidad Irapuato. Agradecimientos Al mi Profesor Dr. Rafael F. Rivera Bustamante, por aceptarme en su grupo de trabajo y darme la libertad de aprender. Al Dr. Edgar A. Rodríguez Negrete, por sus observaciones y discusiones que me ayudaron a ampliar mi visión sobre el problema. Al Profesor Dr. Jean-Philippe Vielle Calzada, por sus multiples comentarios, críticas y sugerencias que enriquecieron la presente tesis. Al Profesor Dr. Raúl Álvarez Venegas, por tener su puerta abierta para asesorarme siempre que necesite. A mi comité tutorial, Dr. Raúl Álvarez Venegas, Dr. Octavio Martínez de la Vega, Dra. Laura Silva Rosales, Dr. Jean-Philippe Vielle Calzada y el Dr. Robert Winkler, por sus observaciones y sugerencias. Al Profesor, Dr. Luis E. González de la Vara y a Barbara Lino Alfaro, por la asesoría brindada en la técnica de separación por gradiente de sacarosa, además de facilitarme el equipo para llevarla acabo. -
Next Generation Sequencing for Studying Viruses and RNA Silencing-Based Antiviral Defense in Crop Plants
Next Generation Sequencing for studying viruses and RNA silencing-based antiviral defense in crop plants Inauguraldissertation zur Erlangung der Würde eines Doktors der Philosophie vorgelegt der Philosophisch-Naturwissenschaftlichen Fakultät der Universität Basel von Jonathan Seguin von Frankreich Basel, 2016 Originaldokument gespeichert auf dem Dokumentenserver der Universität Basel edoc.unibas.ch Genehmigt von der Philosophisch-Naturwissenschaftlichen Fakultät auf Antrag von Prof. Thomas Boller, PD Dr. Mikhail M. Pooggin und Prof. Mihaela Zavolan. Basel, 9 dezember 2014 Prof. Dr. Jörg Schibler General Preface Financial support of this PhD work was provided by the COST action 'Food and Agriculture' (FA) 0806, which has for final objective to create a RNA-based vaccine to immunize crop plants against viral infection. This work was done within a collaboration between the Fasteris SA company, directed by Dr. Laurent Farinelli, and the team of Dr. Mikhail Pooggin from the Plant Physiology research group in Botany at the University of Basel. The expertise of Dr. Laurent Farinelli's company was requested in the objective to use Illumina-Solexa technology to sequence small RNA and perform bioinformatic analysis. The expertise of Dr. Mikhail Pooggin was requested in order to study the defense mechanisms based on sRNA within plant infected by Geminiviruses, Pararetroviruses and Tobamoviruses. Consequently, this work as part of the action FA0806 involved several different other collaborations with COST member european scientists. Acknowledgments I would like to thanks and prove my gratitude to all people who help me during my whole doctoral study and who make this thesis possible. First, I would like to thank my supervisors, PD Dr. -
Evidence to Support Safe Return to Clinical Practice by Oral Health Professionals in Canada During the COVID-19 Pandemic: a Repo
Evidence to support safe return to clinical practice by oral health professionals in Canada during the COVID-19 pandemic: A report prepared for the Office of the Chief Dental Officer of Canada. November 2020 update This evidence synthesis was prepared for the Office of the Chief Dental Officer, based on a comprehensive review under contract by the following: Paul Allison, Faculty of Dentistry, McGill University Raphael Freitas de Souza, Faculty of Dentistry, McGill University Lilian Aboud, Faculty of Dentistry, McGill University Martin Morris, Library, McGill University November 30th, 2020 1 Contents Page Introduction 3 Project goal and specific objectives 3 Methods used to identify and include relevant literature 4 Report structure 5 Summary of update report 5 Report results a) Which patients are at greater risk of the consequences of COVID-19 and so 7 consideration should be given to delaying elective in-person oral health care? b) What are the signs and symptoms of COVID-19 that oral health professionals 9 should screen for prior to providing in-person health care? c) What evidence exists to support patient scheduling, waiting and other non- treatment management measures for in-person oral health care? 10 d) What evidence exists to support the use of various forms of personal protective equipment (PPE) while providing in-person oral health care? 13 e) What evidence exists to support the decontamination and re-use of PPE? 15 f) What evidence exists concerning the provision of aerosol-generating 16 procedures (AGP) as part of in-person -
Characterization of the Cryptic AV3 Promoter of Ageratum Yellow Vein Virus in Prokaryotic and Eukaryotic Systems
Characterization of the Cryptic AV3 Promoter of Ageratum Yellow Vein Virus in Prokaryotic and Eukaryotic Systems Wei-Chen Wang1, Chia-Ying Wu1, Yi-Chin Lai1, Na-Sheng Lin2, Yau-Heiu Hsu1, Chung-Chi Hu1* 1 Graduate Institute of Biotechnology, National Chung Hsing University, Taichung, Taiwan, 2 Institute of Plant and Microbial Biology, Academia Sinica, Nankang, Taipei, Taiwan Abstract A cryptic prokaryotic promoter, designated AV3 promoter, has been previously identified in certain begomovirus genus, including ageratum yellow vein virus isolate NT (AYVV-NT). In this study, we demonstrated that the core nucleotides in the putative 210 and 235 boxes are necessary but not sufficient for promoter activity in Escherichia coli, and showed that AYVV-NT AV3 promoter could specifically interact with single-stranded DNA-binding protein and sigma 70 of E. coli involved in transcription. Several AYVV-NT-encoded proteins were found to increase the activity of AV3 promoter. The transcription start sites downstream to AV3 promoter were mapped to nucleotide positions 803 or 805 in E. coli, and 856 in Nicotiana benthamiana. The eukaryotic activity of AV3 promoter and the translatability of a short downstream open reading frame were further confirmed by using a green fluorescent protein reporter construct in yeast (Saccharomyces cerevisiae) cells. These results suggested that AV3 promoter might be a remnant of evolution that retained cryptic activity at present. Citation: Wang W-C, Wu C-Y, Lai Y-C, Lin N-S, Hsu Y-H, et al. (2014) Characterization of the Cryptic AV3 Promoter of Ageratum Yellow Vein Virus in Prokaryotic and Eukaryotic Systems. PLoS ONE 9(9): e108608. -
Viroze Biljaka 2010
VIROZE BILJAKA Ferenc Bagi Stevan Jasnić Dragana Budakov Univerzitet u Novom Sadu, Poljoprivredni fakultet Novi Sad, 2016 EDICIJA OSNOVNI UDŽBENIK Osnivač i izdavač edicije Univerzitet u Novom Sadu, Poljoprivredni fakultet Trg Dositeja Obradovića 8, 21000 Novi Sad Godina osnivanja 1954. Glavni i odgovorni urednik edicije Dr Nedeljko Tica, redovni profesor Dekan Poljoprivrednog fakulteta Članovi komisije za izdavačku delatnost Dr Ljiljana Nešić, vanredni profesor – predsednik Dr Branislav Vlahović, redovni profesor – član Dr Milica Rajić, redovni profesor – član Dr Nada Plavša, vanredni profesor – član Autori dr Ferenc Bagi, vanredni profesor dr Stevan Jasnić, redovni profesor dr Dragana Budakov, docent Glavni i odgovorni urednik Dr Nedeljko Tica, redovni profesor Dekan Poljoprivrednog fakulteta u Novom Sadu Urednik Dr Vera Stojšin, redovni profesor Direktor departmana za fitomedicinu i zaštitu životne sredine Recenzenti Dr Vera Stojšin, redovni profesor, Univerzitet u Novom Sadu, Poljoprivredni fakultet Dr Mira Starović, naučni savetnik, Institut za zaštitu bilja i životnu sredinu, Beograd Grafički dizajn korice Lea Bagi Izdavač Univerzitet u Novom Sadu, Poljoprivredni fakultet, Novi Sad Zabranjeno preštampavanje i fotokopiranje. Sva prava zadržava izdavač. ISBN 978-86-7520-372-8 Štampanje ovog udžbenika odobrilo je Nastavno-naučno veće Poljoprivrednog fakulteta u Novom Sadu na sednici od 11. 07. 2016.godine. Broj odluke 1000/0102-797/9/1 Tiraž: 20 Mesto i godina štampanja: Novi Sad, 2016. CIP - Ʉɚɬɚɥɨɝɢɡɚɰɢʁɚɭɩɭɛɥɢɤɚɰɢʁɢ ȻɢɛɥɢɨɬɟɤɚɆɚɬɢɰɟɫɪɩɫɤɟɇɨɜɢɋɚɞ -
Rajarshi Kumar Gaur · Nikolay Manchev Petrov Basavaprabhu L
Rajarshi Kumar Gaur · Nikolay Manchev Petrov Basavaprabhu L. Patil Mariya Ivanova Stoyanova Editors Plant Viruses: Evolution and Management Plant Viruses: Evolution and Management Rajarshi Kumar Gaur • Nikolay Manchev Petrov • Basavaprabhu L. Patil • M a r i y a I v a n o v a S t o y a n o v a Editors Plant Viruses: Evolution and Management Editors Rajarshi Kumar Gaur Nikolay Manchev Petrov Department of Biosciences, College Department of Plant Protection, Section of Arts, Science and Commerce of Phytopathology Mody University of Science and Institute of Soil Science, Technology Agrotechnologies and Plant Sikar , Rajasthan , India Protection “Nikola Pushkarov” Sofi a , Bulgaria Basavaprabhu L. Patil ICAR-National Research Centre on Mariya Ivanova Stoyanova Plant Biotechnology Department of Phytopathology LBS Centre, IARI Campus Institute of Soil Science, Delhi , India Agrotechnologies and Plant Protection “Nikola Pushkarov” Sofi a , Bulgaria ISBN 978-981-10-1405-5 ISBN 978-981-10-1406-2 (eBook) DOI 10.1007/978-981-10-1406-2 Library of Congress Control Number: 2016950592 © Springer Science+Business Media Singapore 2016 This work is subject to copyright. All rights are reserved by the Publisher, whether the whole or part of the material is concerned, specifi cally the rights of translation, reprinting, reuse of illustrations, recitation, broadcasting, reproduction on microfi lms or in any other physical way, and transmission or information storage and retrieval, electronic adaptation, computer software, or by similar or dissimilar methodology now known or hereafter developed. The use of general descriptive names, registered names, trademarks, service marks, etc. in this publication does not imply, even in the absence of a specifi c statement, that such names are exempt from the relevant protective laws and regulations and therefore free for general use. -
Virus Discovery in All Three Major Lineages of Terrestrial Arthropods Highlights the Diversity of Single-Stranded DNA Viruses Associated with Invertebrates
Virus discovery in all three major lineages of terrestrial arthropods highlights the diversity of single-stranded DNA viruses associated with invertebrates Karyna Rosario1, Kaitlin A. Mettel1, Bayleigh E. Benner1, Ryan Johnson1, Catherine Scott2, Sohath Z. Yusseff-Vanegas3, Christopher C.M. Baker4,5, Deby L. Cassill6, Caroline Storer7, Arvind Varsani8,9 and Mya Breitbart1 1 College of Marine Science, University of South Florida, Saint Petersburg, FL, USA 2 Department of Biological Sciences, University of Toronto, Scarborough, Scarborough, ON, Canada 3 Department of Biology, University of Vermont, Burlington, VT, USA 4 Department of Ecology and Evolutionary Biology, Princeton University, Princeton, NJ, USA 5 Department of Organismic and Evolutionary Biology, Harvard University, Cambridge, MA, USA 6 Department of Biological Sciences, University of South Florida Saint Petersburg, Saint Petersburg, FL, USA 7 School of Forest Resources and Conservation, University of Florida, Gainesville, FL, USA 8 The Biodesign Center for Fundamental and Applied Microbiomics, School of Life Sciences, Center for Evolution and Medicine, Arizona State University, Tempe, AZ, USA 9 Structural Biology Research Unit, Department of Clinical Laboratory Sciences, University of Cape Town, Cape Town, South Africa ABSTRACT Viruses encoding a replication-associated protein (Rep) within a covalently closed, single-stranded (ss)DNA genome are among the smallest viruses known to infect eukaryotic organisms, including economically valuable agricultural crops and livestock.