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Registro Completo |
Biblioteca(s): |
Embrapa Cocais. |
Data corrente: |
04/04/2019 |
Data da última atualização: |
26/11/2019 |
Tipo da produção científica: |
Artigo em Periódico Indexado |
Autoria: |
ARAUJO, R. F.; ZONTA, J. B.; ARAUJO, E. F.; LEAL, C. A. M. |
Afiliação: |
ROBERTO FONTES ARAUJO, EPAMIG; JOAO BATISTA ZONTA, CPACP; EDUARDO FONTES ARAUJO, UFV; CÉZAR AUGUSTO MAFIA LEAL, UFV. |
Título: |
Tratamentos alternativos para conservação de sementes de mamona (Ricinus communis L.). |
Ano de publicação: |
2019 |
Fonte/Imprenta: |
Summa Phytopathologica, v. 45, n. 1, p. 89-96, 2019. |
DOI: |
10.1590/0100-5405/187494 |
Idioma: |
Português |
Conteúdo: |
Objetivou-se avaliar os efeitos de tratamentos alternativos e do ambiente de armazenamento nas qualidades fisiológica e sanitária de sementes de mamona. Os tratamentos foram: derosal, vitavax-thiram, benzoato de sódio, sorbato de potássio, trichodermil SP, alecrim, alho, canela, cravo-da-índia e testemunha. As sementes foram submetidas a armazenamento em ambiente de laboratório e câmara fria por 12 meses. Sementes de mamona tratadas quimicamente, com derosal e vitavaxthiram, apresentaram qualidade fisiológica e sanitária superiores àquelas tratadas com produtos alternativos e sem tratamento, aos 12 meses de armazenamento. Sementes de mamona armazenadas em ambiente de laboratório, por período superior a oito meses, devem ser tratadas com fungicidas químicos tradicionais. Se armazenadas em câmara fria, a manutenção de sua germinação e vigor acima de 80% independe do tratamento fungicida utilizado. Os tratamentos fungicidas alternativos mais promissores foram o trichodermil, o sorbato de potássio e o alho, com destaque para o primeiro produto. |
Thesagro: |
Armazenamento; Fungo; Germinação; Mamona. |
Categoria do assunto: |
F Plantas e Produtos de Origem Vegetal |
URL: |
https://ainfo.cnptia.embrapa.br/digital/bitstream/item/195431/1/Artigo-Publicado.pdf
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Marc: |
LEADER 01702naa a2200217 a 4500 001 2107917 005 2019-11-26 008 2019 bl uuuu u00u1 u #d 024 7 $a10.1590/0100-5405/187494$2DOI 100 1 $aARAUJO, R. F. 245 $aTratamentos alternativos para conservação de sementes de mamona (Ricinus communis L.).$h[electronic resource] 260 $c2019 520 $aObjetivou-se avaliar os efeitos de tratamentos alternativos e do ambiente de armazenamento nas qualidades fisiológica e sanitária de sementes de mamona. Os tratamentos foram: derosal, vitavax-thiram, benzoato de sódio, sorbato de potássio, trichodermil SP, alecrim, alho, canela, cravo-da-índia e testemunha. As sementes foram submetidas a armazenamento em ambiente de laboratório e câmara fria por 12 meses. Sementes de mamona tratadas quimicamente, com derosal e vitavaxthiram, apresentaram qualidade fisiológica e sanitária superiores àquelas tratadas com produtos alternativos e sem tratamento, aos 12 meses de armazenamento. Sementes de mamona armazenadas em ambiente de laboratório, por período superior a oito meses, devem ser tratadas com fungicidas químicos tradicionais. Se armazenadas em câmara fria, a manutenção de sua germinação e vigor acima de 80% independe do tratamento fungicida utilizado. Os tratamentos fungicidas alternativos mais promissores foram o trichodermil, o sorbato de potássio e o alho, com destaque para o primeiro produto. 650 $aArmazenamento 650 $aFungo 650 $aGerminação 650 $aMamona 700 1 $aZONTA, J. B. 700 1 $aARAUJO, E. F. 700 1 $aLEAL, C. A. M. 773 $tSumma Phytopathologica$gv. 45, n. 1, p. 89-96, 2019.
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Registro original: |
Embrapa Cocais (CPACP) |
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Registro Completo
Biblioteca(s): |
Embrapa Mandioca e Fruticultura. |
Data corrente: |
14/11/2022 |
Data da última atualização: |
14/11/2022 |
Tipo da produção científica: |
Artigo em Periódico Indexado |
Circulação/Nível: |
A - 2 |
Autoria: |
ARENA, G. D.; RAMOS-GONZÁLEZ, P. L.; TASSI, A. D.; MACHADO, M. A.; ASTUA, J. de F. |
Afiliação: |
GABRIELLA D. ARENA, Instituto Biológico; PEDRO L. RAMOS GONZÁLEZ, Instituto Biológico; ALINE D. TASSI, Instituto Biológico; MARCOS A. MACHADO, Centro de Citricultura Sylvio Moreira; JULIANA DE FREITAS ASTUA, CNPMF. |
Título: |
A TaqMan RT qPCR assay for absolute quantifcation of citrus leprosis virus C lineage SJP: disclosing the subgenomic/genomic ratio in plant and mite vector, plant organ specifc viral loads, and the kinetics of viral accumulation in plants. |
Ano de publicação: |
2022 |
Fonte/Imprenta: |
Tropical Plant Pathology, November, 2022. |
DOI: |
https://doi.org/10.1007/s40858-022-00539-4 |
Idioma: |
Inglês |
Conteúdo: |
Citrus leprosis virus C (CiLV-C) causes citrus leprosis, a re-emergent viral disease afecting citrus production in Latin America. Here, we developed two TaqMan RT-qPCR assays to detect and quantify CiLV-C lineage SJP, prevalent in the Brazilian citrus belt and the world?s main sweet orange production area. Assays targeted sequences within the genes p29 and RdRp. ORF p29 is transcribed in a subgenomic RNA (sgRNA) and codes for the putative capsid protein. ORF RdRp, coding for the replicase, is directly translated from the genomic RNA (gRNA). After assessing the efciency and sensitivity of the assays, the targets were quantifed in (i) symptomatic tissues of feld-collected sweet orange (Citrus sinensis) samples, in a time course after infection in both (ii) Arabidopsis thaliana and (iii) sweet orange plants, and in (iv) the mite vector Brevipalpus yothersi. Sweet orange fruits support higher quantities of CiLV-C molecules than stems and leaves. Amounts of viral molecules in late lesions of diferent developmental stages collected in the feld remain stable, but CiLV-C quantities progressively increase from the early stages of the infection to the appearance of symptoms in both A. thaliana and C. sinensis. The high sensibility of the assays allowed the quantifcation of CiLV-C in early infection periods, even during the asymptomatic period of plants, and in scant amounts of B. yothersi individuals. In plants, a higher accumulation of p29 than RdRp was reported (sgRNA/gRNA up to 95), refecting the transcription of the p29 sgRNA. In mites, p29 quantities were only slightly higher than RdRp (sgRNA/gRNA of 2), adding a new tool to evaluate the putative replication of CiLV-C in its vector, a challenging aspect of the study of mite-virus interplay. The methods developed here contribute to a more accurate analysis of citrus leprosis epidemiology and shed light on unknown features of the virus-vector interaction MenosCitrus leprosis virus C (CiLV-C) causes citrus leprosis, a re-emergent viral disease afecting citrus production in Latin America. Here, we developed two TaqMan RT-qPCR assays to detect and quantify CiLV-C lineage SJP, prevalent in the Brazilian citrus belt and the world?s main sweet orange production area. Assays targeted sequences within the genes p29 and RdRp. ORF p29 is transcribed in a subgenomic RNA (sgRNA) and codes for the putative capsid protein. ORF RdRp, coding for the replicase, is directly translated from the genomic RNA (gRNA). After assessing the efciency and sensitivity of the assays, the targets were quantifed in (i) symptomatic tissues of feld-collected sweet orange (Citrus sinensis) samples, in a time course after infection in both (ii) Arabidopsis thaliana and (iii) sweet orange plants, and in (iv) the mite vector Brevipalpus yothersi. Sweet orange fruits support higher quantities of CiLV-C molecules than stems and leaves. Amounts of viral molecules in late lesions of diferent developmental stages collected in the feld remain stable, but CiLV-C quantities progressively increase from the early stages of the infection to the appearance of symptoms in both A. thaliana and C. sinensis. The high sensibility of the assays allowed the quantifcation of CiLV-C in early infection periods, even during the asymptomatic period of plants, and in scant amounts of B. yothersi individuals. In plants, a higher accumulation of p29 than RdRp was reported (sgRNA/gRNA up to 95)... Mostrar Tudo |
Palavras-Chave: |
Kitaviridae; Real-time PC. |
Thesagro: |
Doença de Planta; Fruta Cítrica; Leprose Cítrica. |
Thesaurus NAL: |
Arabidopsis; Brevipalpus; Cilevirus; Citrus. |
Categoria do assunto: |
-- |
Marc: |
LEADER 02910naa a2200289 a 4500 001 2148257 005 2022-11-14 008 2022 bl uuuu u00u1 u #d 024 7 $ahttps://doi.org/10.1007/s40858-022-00539-4$2DOI 100 1 $aARENA, G. D. 245 $aA TaqMan RT qPCR assay for absolute quantifcation of citrus leprosis virus C lineage SJP$bdisclosing the subgenomic/genomic ratio in plant and mite vector, plant organ specifc viral loads, and the kinetics of viral accumulation in plants.$h[electronic resource] 260 $c2022 520 $aCitrus leprosis virus C (CiLV-C) causes citrus leprosis, a re-emergent viral disease afecting citrus production in Latin America. Here, we developed two TaqMan RT-qPCR assays to detect and quantify CiLV-C lineage SJP, prevalent in the Brazilian citrus belt and the world?s main sweet orange production area. Assays targeted sequences within the genes p29 and RdRp. ORF p29 is transcribed in a subgenomic RNA (sgRNA) and codes for the putative capsid protein. ORF RdRp, coding for the replicase, is directly translated from the genomic RNA (gRNA). After assessing the efciency and sensitivity of the assays, the targets were quantifed in (i) symptomatic tissues of feld-collected sweet orange (Citrus sinensis) samples, in a time course after infection in both (ii) Arabidopsis thaliana and (iii) sweet orange plants, and in (iv) the mite vector Brevipalpus yothersi. Sweet orange fruits support higher quantities of CiLV-C molecules than stems and leaves. Amounts of viral molecules in late lesions of diferent developmental stages collected in the feld remain stable, but CiLV-C quantities progressively increase from the early stages of the infection to the appearance of symptoms in both A. thaliana and C. sinensis. The high sensibility of the assays allowed the quantifcation of CiLV-C in early infection periods, even during the asymptomatic period of plants, and in scant amounts of B. yothersi individuals. In plants, a higher accumulation of p29 than RdRp was reported (sgRNA/gRNA up to 95), refecting the transcription of the p29 sgRNA. In mites, p29 quantities were only slightly higher than RdRp (sgRNA/gRNA of 2), adding a new tool to evaluate the putative replication of CiLV-C in its vector, a challenging aspect of the study of mite-virus interplay. The methods developed here contribute to a more accurate analysis of citrus leprosis epidemiology and shed light on unknown features of the virus-vector interaction 650 $aArabidopsis 650 $aBrevipalpus 650 $aCilevirus 650 $aCitrus 650 $aDoença de Planta 650 $aFruta Cítrica 650 $aLeprose Cítrica 653 $aKitaviridae 653 $aReal-time PC 700 1 $aRAMOS-GONZÁLEZ, P. L. 700 1 $aTASSI, A. D. 700 1 $aMACHADO, M. A. 700 1 $aASTUA, J. de F. 773 $tTropical Plant Pathology, November, 2022.
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