First Report of Tobacco mild green mosaic virus Infecting Capsicum annuum in Tunisia.
Identifieur interne : 000538 ( Main/Exploration ); précédent : 000537; suivant : 000539First Report of Tobacco mild green mosaic virus Infecting Capsicum annuum in Tunisia.
Auteurs : M I Font [Espagne] ; M C C Rdoba-Sellés [Espagne] ; M C Cebrián [Espagne] ; J A Herrera-Vásquez [Espagne] ; A. Alfaro-Fernández [Espagne] ; A. Boubaker [Tunisie] ; I. Soltani [Tunisie] ; C. Jordá [Espagne]Source :
- Plant disease [ 0191-2917 ] ; 2009.
Abstract
During the springs of 2007 and 2008, leaf deformations as well as symptoms of mild green and chlorotic mosaic were observed on pepper (Capsicum annuum) plants grown in Monastir (northwest Tunisia) and Kebili (southeast Tunisia). With the support of projects A/5269/06 and A/8584/07 from the Spanish Agency for International Cooperation (AECI), symptomatic leaf samples were analyzed by transmission electron microscopy (TEM) of leaf-dip preparations. Typical tobamovirus-like particles (rigid rods ≈300 nm long) were observed in crude plant extracts. According to literature, at least six tobamoviruses infect peppers: Paprika mild mottle virus (PaMMV); Pepper mild mottle virus (PMMoV); Ribgrass mosaic virus (RMV); Tobacco mild green mosaic virus (TMGMV); Tobacco mosaic virus (TMV); and Tomato mosaic virus (ToMV) (1). Extracts from six symptomatic plants from Monastir and four from Kebili fields tested negative for ToMV, TMV, and PMMoV and tested positive for TMGMV by double-antibody sandwich (DAS)-ELISA using polyclonal antibodies specific to each virus (Loewe Biochemica GMBH, Sauerlach, Germany). To confirm the positive TMGMV results, total RNAs from 10 symptomatic plants that tested positive by ELISA were extracted and analyzed by reverse transcription (RT)-PCR using primers designed to specifically amplify a region of the coat protein gene (CP) of TMGMV (2). The 524-bp TMGMV-CP specific DNA fragment was amplified from all samples, but was not amplified from healthy plants or the sterile water used with negative controls. RT-PCR products were purified and directly sequenced. BLAST analysis of the obtained sequence (GenBank No. EU770626) showed 99 to 98% nucleotide identity with TMGMV isolates PAN-1, DSMZ PV-0113, TMGMV-Pt, and VZ1 (GenBank Nos. EU934035, EF469769, AM262165, and DQ460731, respectively) and less than 69% with PaMMV and PMMoV isolates (GenBank Nos. X72586 and AF103777, respectively). Two TMGMV-positive, singly, infected symptomatic pepper plants collected from Monastir and Kebili were used in mechanical transmissions to new pepper and tomato plants. Inoculated pepper plants exhibited mild chlorosis symptoms and tested positive for TMGMV only; however, inoculated tomato plants cv. Marmande were asymptomatic and tested negative as expected for TMGMV infection (1). To our knowledge, although C. annuum has been shown as a natural host for TMGMV (2), this is the first report of TMGMV in Tunisia. Reference: (1) A. A. Brunt et al. Plant Viruses Online: Descriptions and Lists from the VIDE Database. Version: 20th August 1996. Online publication, 1996. (2) J. Cohen et al. Ann. Appl. Biol. 138:153, 2001.
DOI: 10.1094/PDIS-93-7-0761B
PubMed: 30764375
Affiliations:
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Alfaro-Fernández</name><affiliation wicri:level="2"><nlm:affiliation>Instituto Agroforestal Mediterráneo, Universidad Politécnica de Valencia, Cno. de Vera s/n, 46022 Valencia, Spain.</nlm:affiliation><country xml:lang="fr">Espagne</country><wicri:regionArea>Instituto Agroforestal Mediterráneo, Universidad Politécnica de Valencia, Cno. de Vera s/n, 46022 Valencia</wicri:regionArea><placeName><region nuts="2" type="communauté">Communauté valencienne</region></placeName></affiliation></author><author><name sortKey="Boubaker, A" sort="Boubaker, A" uniqKey="Boubaker A" first="A" last="Boubaker">A. Boubaker</name><affiliation wicri:level="1"><nlm:affiliation>Départament de Phytopathologie de l'INAT, Av. Charles Nicole 43, 1082 Tunis-Maharajène, Tunisia.</nlm:affiliation><country xml:lang="fr">Tunisie</country><wicri:regionArea>Départament de Phytopathologie de l'INAT, Av. Charles Nicole 43, 1082 Tunis-Maharajène</wicri:regionArea><wicri:noRegion>1082 Tunis-Maharajène</wicri:noRegion></affiliation></author><author><name sortKey="Soltani, I" sort="Soltani, I" uniqKey="Soltani I" first="I" last="Soltani">I. Soltani</name><affiliation wicri:level="1"><nlm:affiliation>Départament de Phytopathologie de l'INAT, Av. Charles Nicole 43, 1082 Tunis-Maharajène, Tunisia.</nlm:affiliation><country xml:lang="fr">Tunisie</country><wicri:regionArea>Départament de Phytopathologie de l'INAT, Av. Charles Nicole 43, 1082 Tunis-Maharajène</wicri:regionArea><wicri:noRegion>1082 Tunis-Maharajène</wicri:noRegion></affiliation></author><author><name sortKey="Jorda, C" sort="Jorda, C" uniqKey="Jorda C" first="C" last="Jordá">C. Jordá</name><affiliation wicri:level="2"><nlm:affiliation>Instituto Agroforestal del Mediterráneo, Universidad Politécnica de Valencia, Cno. de Vera s/n, 46022 Valencia, Spain.</nlm:affiliation><country xml:lang="fr">Espagne</country><wicri:regionArea>Instituto Agroforestal del Mediterráneo, Universidad Politécnica de Valencia, Cno. de Vera s/n, 46022 Valencia</wicri:regionArea><placeName><region nuts="2" type="communauté">Communauté valencienne</region></placeName></affiliation></author></analytic><series><title level="j">Plant disease</title><idno type="ISSN">0191-2917</idno><imprint><date when="2009" type="published">2009</date></imprint></series></biblStruct></sourceDesc></fileDesc><profileDesc><textClass></textClass></profileDesc></teiHeader><front><div type="abstract" xml:lang="en">During the springs of 2007 and 2008, leaf deformations as well as symptoms of mild green and chlorotic mosaic were observed on pepper (Capsicum annuum) plants grown in Monastir (northwest Tunisia) and Kebili (southeast Tunisia). With the support of projects A/5269/06 and A/8584/07 from the Spanish Agency for International Cooperation (AECI), symptomatic leaf samples were analyzed by transmission electron microscopy (TEM) of leaf-dip preparations. Typical tobamovirus-like particles (rigid rods ≈300 nm long) were observed in crude plant extracts. According to literature, at least six tobamoviruses infect peppers: Paprika mild mottle virus (PaMMV); Pepper mild mottle virus (PMMoV); Ribgrass mosaic virus (RMV); Tobacco mild green mosaic virus (TMGMV); Tobacco mosaic virus (TMV); and Tomato mosaic virus (ToMV) (1). Extracts from six symptomatic plants from Monastir and four from Kebili fields tested negative for ToMV, TMV, and PMMoV and tested positive for TMGMV by double-antibody sandwich (DAS)-ELISA using polyclonal antibodies specific to each virus (Loewe Biochemica GMBH, Sauerlach, Germany). To confirm the positive TMGMV results, total RNAs from 10 symptomatic plants that tested positive by ELISA were extracted and analyzed by reverse transcription (RT)-PCR using primers designed to specifically amplify a region of the coat protein gene (CP) of TMGMV (2). The 524-bp TMGMV-CP specific DNA fragment was amplified from all samples, but was not amplified from healthy plants or the sterile water used with negative controls. RT-PCR products were purified and directly sequenced. BLAST analysis of the obtained sequence (GenBank No. EU770626) showed 99 to 98% nucleotide identity with TMGMV isolates PAN-1, DSMZ PV-0113, TMGMV-Pt, and VZ1 (GenBank Nos. EU934035, EF469769, AM262165, and DQ460731, respectively) and less than 69% with PaMMV and PMMoV isolates (GenBank Nos. X72586 and AF103777, respectively). Two TMGMV-positive, singly, infected symptomatic pepper plants collected from Monastir and Kebili were used in mechanical transmissions to new pepper and tomato plants. Inoculated pepper plants exhibited mild chlorosis symptoms and tested positive for TMGMV only; however, inoculated tomato plants cv. Marmande were asymptomatic and tested negative as expected for TMGMV infection (1). To our knowledge, although C. annuum has been shown as a natural host for TMGMV (2), this is the first report of TMGMV in Tunisia. Reference: (1) A. A. Brunt et al. Plant Viruses Online: Descriptions and Lists from the VIDE Database. Version: 20th August 1996. Online publication, 1996. (2) J. Cohen et al. Ann. Appl. Biol. 138:153, 2001.</div></front></TEI><affiliations><list><country><li>Espagne</li><li>Tunisie</li></country><region><li>Communauté valencienne</li></region></list><tree><country name="Espagne"><region name="Communauté valencienne"><name sortKey="Font, M I" sort="Font, M I" uniqKey="Font M" first="M I" last="Font">M I Font</name></region><name sortKey="Alfaro Fernandez, A" sort="Alfaro Fernandez, A" uniqKey="Alfaro Fernandez A" first="A" last="Alfaro-Fernández">A. Alfaro-Fernández</name><name sortKey="C Rdoba Selles, M C" sort="C Rdoba Selles, M C" uniqKey="C Rdoba Selles M" first="M C" last="C Rdoba-Sellés">M C C Rdoba-Sellés</name><name sortKey="Cebrian, M C" sort="Cebrian, M C" uniqKey="Cebrian M" first="M C" last="Cebrián">M C Cebrián</name><name sortKey="Herrera Vasquez, J A" sort="Herrera Vasquez, J A" uniqKey="Herrera Vasquez J" first="J A" last="Herrera-Vásquez">J A Herrera-Vásquez</name><name sortKey="Jorda, C" sort="Jorda, C" uniqKey="Jorda C" first="C" last="Jordá">C. Jordá</name></country><country name="Tunisie"><noRegion><name sortKey="Boubaker, A" sort="Boubaker, A" uniqKey="Boubaker A" first="A" last="Boubaker">A. Boubaker</name></noRegion><name sortKey="Soltani, I" sort="Soltani, I" uniqKey="Soltani I" first="I" last="Soltani">I. Soltani</name></country></tree></affiliations></record>Pour manipuler ce document sous Unix (Dilib)
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