scholarly journals Danos causados pelo Zucchini lethal chlorosis virus (ZLCV) sobre a produção de frutos comerciais de abobrinha de moita 'Caserta'

2009 ◽  
Vol 35 (3) ◽  
pp. 223-225 ◽  
Author(s):  
José Segundo Giampan ◽  
Jorge Alberto Marques Rezende ◽  
Sônia Maria De Stefano Piedade
Keyword(s):  
Mosaic Virus ◽  
Virus Type ◽  
Zucchini Yellow Mosaic Virus ◽  
Ringspot Virus ◽  
Yellow Mosaic Virus ◽  
Papaya Ringspot Virus

O ZLCV é um tospovírus encontrado com freqüência causando severos danos em cucurbitáceas. Nesse trabalho avaliaram-se os danos causados pelo ZLCV em abobrinha de moita 'Caserta', em campo na ESALQ/USP, Piracicaba-SP, onde esse vírus é freqüente. Plantas obtidas pela semeadura direta foram monitoradas periodicamente quanto à infecção pelo ZLCV por meio dos sintomas e por PTA-ELISA. Monitorou-se ainda a contaminação com Papaya ringspot virus - type W e Zucchini yellow mosaic virus, desconsiderando a produção dessas plantas. As plantas foram agrupadas em função da época de aparecimento dos sintomas do ZLCV, avaliando a produção de frutos comerciais (FC) e não comerciais (FNC) de cada grupo e comparando com a de plantas que permaneceram sem sintomas até o final do experimento. As plantas que apresentaram sintomas até os 23 dias após a emergência (DAE) não produziram qualquer tipo de frutos. FC foram colhidos de plantas que apresentaram sintomas a partir dos 42 DAE. Mesmo assim, houve redução de 78,5 % na produção de FC. Plantas que mostraram sintomas por ocasião da última colheita (55 DAE) apresentaram redução na produção de FC de 9,6 %. A infecção com o ZLCV até o início da frutificação inviabiliza a produção de FC de abobrinha de moita 'Caserta'.

scholarly journals First detection of papaya ringspot virus-type W and zucchini yellow mosaic virus infecting Cucurbita maxima in Paraguay

2019 ◽  
Vol 102 (1) ◽  
pp. 231-231
Author(s):  
Arnaldo Esquivel-Fariña ◽  
Viviana Marcela Camelo-García ◽  
Jorge Alberto Marques Rezende ◽  
Elliot Watanabe Kitajima ◽  
Luis Roberto González-Segnana
Keyword(s):  
Mosaic Virus ◽  
Virus Type ◽  
Zucchini Yellow Mosaic Virus ◽  
Ringspot Virus ◽  
Yellow Mosaic Virus ◽  
Papaya Ringspot Virus ◽  
Cucurbita Maxima

scholarly journals Danos na produção da abobrinha de moita causados pelo Papaya ringspot virus type W e Zucchini yellow mosaic virus

2007 ◽  
Vol 33 (2) ◽  
pp. 192-194 ◽  
Author(s):  
Mônica Juliani Zavaglia Pereira ◽  
Angelo Aparecido Barbosa Sussel ◽  
Ricardo Ferreira da Silva ◽  
Odair José Kuhn ◽  
Fernanda Domingues ◽  
...  
Keyword(s):  
Mosaic Virus ◽  
Virus Type ◽  
Cucurbita Pepo ◽  
Zucchini Yellow Mosaic Virus ◽  
Ringspot Virus ◽  
Yellow Mosaic Virus ◽  
Papaya Ringspot Virus

Este trabalho teve por objetivo avaliar, em condições de casa de vegetação e de campo, os danos causados pelo PRSV-W e ZYMV em abobrinha-de-moita (Cucurbita pepo cv. Caserta). As plantas em casa de vegetação foram inoculadas com os vírus individualmente e em mistura aos 12 e 22 dias após emergência (DAE) e aos 5, 15 e 25 DAE no campo. Em casa de vegetação, as infecções com PRSV-W + ZYMV, PRSV-W e ZYMV, na primeira época de inoculação, ocasionaram reduções de área foliar de 39,6%, 36,8% e 12,1%, respectivamente. As massas fresca e seca também foram significativamente afetadas na primeira época de inoculação. No campo, as plantas com infecções individuais ou mistas dos potyvírus produziram frutos não comerciais em quantidades que variaram de 14 a 861 g/planta, dependendo da idade que foram inoculadas. As plantas tratadas com tampão fosfato aos 5, 15 e 25 DAE produziram em média 573 g, 937 g e 1172 g de frutos comerciais e 282 g, 221 g e 192 g de frutos não comerciais, respectivamente. A redução na massa fresca das plantas foi diretamente relacionada com a época de inoculação, com médias de 60,7% para aquelas inoculadas aos 5 DAE e de 22,7% para aquelas inoculadas aos 15 DAE. Na terceira época de inoculação não houve diferença significativa de massa fresca entre os tratamentos.

Generation of transgenic watermelon resistant to Zucchini yellow mosaic virus and Papaya ringspot virus type W

2010 ◽  
Vol 30 (3) ◽  
pp. 359-371 ◽  
Author(s):  
Tsong-Ann Yu ◽  
Chu-Hui Chiang ◽  
Hui-Wen Wu ◽  
Chin-Mei Li ◽  
Ching-Fu Yang ◽  
...  
Keyword(s):  
Mosaic Virus ◽  
Virus Type ◽  
Zucchini Yellow Mosaic Virus ◽  
Ringspot Virus ◽  
Yellow Mosaic Virus ◽  
Papaya Ringspot Virus ◽  
Transgenic Watermelon

scholarly journals Fontes de resistência em melancia aos principais potyvírus isolados de cucurbitáceas no Nordeste brasileiro

2002 ◽  
Vol 20 (4) ◽  
pp. 589-592 ◽  
Author(s):  
Vanuzia B. de Oliveira ◽  
Manoel Abilio de Queiroz ◽  
Albersio A. Lima
Keyword(s):  
Mosaic Virus ◽  
Virus Type ◽  
Citrullus Lanatus ◽  
Zucchini Yellow Mosaic Virus ◽  
Ringspot Virus ◽  
Yellow Mosaic Virus ◽  
Watermelon Mosaic Virus ◽  
Papaya Ringspot Virus

A melancia, Citrullus spp., pode ser infetada por várias espécies de vírus, dentre as quais se destacam as pertencentes à família Potyviridae. Visando identificar fontes de resistência a potyvírus, foi iniciado na UFC um programa de indexação do banco de germoplasma de melancia da Embrapa Semi-Árido. Foram utilizadas as espécies de potyvírus, isoladas de cucurbitáceas no Nordeste: Papaya ringspot virus type W (PRSV-W); Watermelon mosaic virus-2 (WMV-2) e Zucchini yellow mosaic virus (ZYMV). Dos 50 acessos de melancia avaliados, 37 pertencem a Citrullus lanatus, 9 a C. lanatus var. citroides e 4 a C. colocynthis. Em casa-de-vegetação foram inoculadas 4 plantas envasadas de cada acesso com PRSV-W, 4 com WMV-2 e 4 com ZYMV, ficando 4 sem inoculação. As inoculações foram efetuadas 8 dias após o plantio, e 15 dias depois. As plantas assintomáticas foram reinoculadas. As plantas que persistiram sem sintomas, após um período de 25 dias após a primeira inoculação, foram testadas por ELISA contra os anti-soros correspondentes. Dentre os acessos avaliados, 5 mostraram-se resistentes aos 3 vírus, um resistente somente ao PRSV-W, 21 resistentes somente ao ZYMV e nenhum com resistência isolada ao WMV-2. No entanto, 45 acessos apresentaram resistência ao ZYMV isoladamente ou em combinação com outro potyvírus. Os acessos suscetíveis, apresentaram sintomas 10 dias após a primeira inoculação enquanto que os resistentes permaneceram sem sintomas após a segunda inoculação e com resultados negativos em ELISA. Alguns acessos poderão ser cruzados visando obter populações segregantes para a seleção de indivíduos homozigotos recessivos e, juntamente com os acessos com resistência tripla identificados, ampliar a variabilidade genética de fontes quanto a características de planta e fruto.

scholarly journals First Report of Papaya ringspot virus–Type W and Zucchini yellow mosaic virus Infecting Trichosanthes cucumerina in Brazil

Plant Disease ◽  
2010 ◽  
Vol 94 (6) ◽  
pp. 789-789 ◽  
Author(s):  
A. S. Jadão ◽  
J. E. Buriola ◽  
J. A. M. Rezende
Keyword(s):  
Amino Acid ◽  
Mosaic Virus ◽  
Virus Type ◽  
Zucchini Yellow Mosaic Virus ◽  
Amino Acid Sequences ◽  
Ringspot Virus ◽  
Yellow Mosaic Virus ◽  
Papaya Ringspot Virus ◽  
Mechanical Inoculation ◽  
Cp Gene

Trichosanthes cucumerina L., known as snake gourd, is a cucurbitaceous plant that is probably native to and originally domesticated in India. It is cultivated in humid subtropical and tropical countries of Australia, Latin America, and Africa (2). Plants of this species exhibiting symptoms of mosaic and leaf malformation were found during November 2008 near an experimental field of the Departamento de Fitopatologia e Nematologia, Universidade de São Paulo, Piracicaba, State of São Paulo, Brazil. Electron microscopy examination of negatively stained extract of infected tissue showed the presence of filamentous potyvirus-like particles. Sap from these infected plants reacted in plate-trapped antigen (PTA)-ELISA with the antiserum against Papaya ringspot virus–type W (PRSV-W) or Zucchini yellow mosaic virus (ZYMV), but not with the antiserum against Cucumber mosaic virus (CMV) or Zucchini lethal chlorosis virus (ZLCV). PRSV-W and ZYMV were simultaneously transmitted by mechanical inoculation to four plants of Cucurbita pepo cv. Caserta and one plant of T. cucumerina, causing mosaic. In addition, PRSV-W and ZYMV isolates from our virus collection separately infected one plant of T. cucumerina after mechanical inoculation. Infections were confirmed by PTA-ELISA. Total RNA extracted from infected and healthy T. cucumerina was analyzed by reverse transcription (RT)-PCR using a primer pair specific to the coat protein (CP) gene of PRSV-W (4) or ZYMV (3). Fragments of 864 bp and 1,045 bp were amplified with each pair of primers, respectively. Nucleotide sequences directly obtained from purified PCR products were used for further identification of these potyviruses. The nucleotide and deduced amino acid sequences of part of the CP gene (792 nt) of PRSV-W (GenBank Accession No. GU586789) shared 99 and 98% identity, respectively, with that of the Brazilian isolate PRSV-W-C (GenBank Accession No. 4152). The nucleotide and deduced amino acid sequences of the entire CP gene (837 nt) of ZYMV (GenBank Accession No. 6790) shared 91 to 98% and 94 to 100% identity, respectively, with innumerous isolates of ZYMV deposited in the GenBank (e.g., Accession Nos. AB004640, D13914, AB004641, and AJ420019). Natural infection of T. cucumerina by PRSV-W was reported in Nepal (1). To our knowledge, this is the first report of T. cucumerina infected by PRSV-W and ZYMV in Brazil. References: (1) G. Dahal et al. Ann. Appl. Biol. 130:491, 1997. (2) R. W. Robinson and D. S. Decker-Walters. Cucurbits. CAB International, Wallingford, UK. 1997. (3) K. G. Thomson et al. J. Virol. Methods 55:83, 1995. (4) M. G. S. D. Vechia. Fitopatol. Bras. 28:678, 2003.

scholarly journals Yield of varieties of Cucurbita pepo preimmunized with mild strains of Papaya ringspot virus - type W and Zucchini yellow mosaic virus

2009 ◽  
Vol 66 (3) ◽  
pp. 419-424 ◽  
Author(s):  
Estela Bonilha ◽  
Ricardo Gioria ◽  
Rômulo Fujito Kobori ◽  
Paulo Tarcísio Della Vecchia ◽  
Sônia Maria de Stefano Piedade ◽  
...  
Keyword(s):  
Mosaic Virus ◽  
Virus Type ◽  
Cucurbita Pepo ◽  
Zucchini Yellow Mosaic Virus ◽  
Fruit Weight ◽  
Ringspot Virus ◽  
Yellow Mosaic Virus ◽  
Papaya Ringspot Virus ◽  
Leaf Symptoms ◽  
Severe Leaf

Papaya ringspot virus - type W (PRSV-W) and Zucchini yellow mosaic virus (ZYMV) are the most prevalent viruses in cucurbit crops in Brazil and responsible for frequent yield losses. Diseases caused by these viruses are difficult to control. The objective of this work was to evaluate the effects of mild strains PRSV-W-1 and ZYMV-M on the yield of Cucurbita pepo L. cvs. Samira, Novita Plus, AF 2847, and Yasmin, under plastic greenhouse and field conditions. Plants infected with ZYMV-M and grown in a plastic greenhouse did not exhibit typical leaf symptoms or significant alterations in quantitative and qualitative fruit yield. However, when infected with PRSV-W-1, or PRSV-W-1 + ZYMV-M, the plants exhibited severe leaf mosaic symptoms and reduced fruit quality, although there were no changes in the number and mean fruit weight harvested from these plants. When these plants were infected with PRSV-W-1 and studied simultaneously in the field and plastic greenhouse, intensification of symptoms in the fruits and leaves was more pronounced under the greenhouse conditions. Quantitative yield did not change. Environmental factors seem to influence symptoms induced by PRSV-W-1.

scholarly journals Cyclanthera pedata var. edulis: New Host of Papaya ringspot virus-type W in Brazil

Plant Disease ◽  
2000 ◽  
Vol 84 (10) ◽  
pp. 1155-1155 ◽  
Author(s):  
J. A. M. Rezende
Keyword(s):  
Mosaic Virus ◽  
Virus Type ◽  
Zucchini Yellow Mosaic Virus ◽  
Ringspot Virus ◽  
Yellow Mosaic Virus ◽  
Enzyme Linked Immunosorbent Assay ◽  
Watermelon Mosaic Virus ◽  
Papaya Ringspot Virus ◽  
Electron Microscopic ◽  
New Host

Stuffing cucumber (Cyclanthera pedata var. edulis Schrad.) is native to the Americas, where it often occurs as an escape. The species is monoecious, with small flowers and large and deeply palmately lobed leaves. Fruits are puffy, partially hollow, and measure 5 × 15 cm long. The plant has soft spines, a tapered neck, and black seeds. The species has long been cultivated in Asia, where fruits are eaten raw as a substitute for cucumber or cooked (1). One plant showing intense mosaic, without leaf malformation, was found near a squash crop (Cucurbita moschata) in Anhembi County, State of São Paulo. Electron microscopic examination of a negatively stained sap preparation from leaves of this plant showed that it contained numerous flexuous rod-shaped particles, approximately 700 × 760 nm long, similar to those of potyviruses. Extracts from symptomatic leaves were rub-inoculated to zucchini squash (Cucurbita pepo), Carica papaya, Chenopodium amaranticolor, C. quinoa, Gomphrena globosa, and Phaseolus vulgaris cv. Black Turtle 2. Only zucchini squash was infected and developed severe mosaic with intense leaf malformation. Extracts from field infected stuffing cucumber and experimentally inoculated zucchini squash were tested by plate-trapped antigen enzyme linked immunosorbent assay (PTA-ELISA) with antisera against the following potyviruses: Papaya ringspot virus-type W (PRSV-W), Zucchini yellow mosaic virus (ZYMV), and Watermelon mosaic virus-2 (WMV-2). Samples were also tested with antisera against a tospovirus (Zucchini lethal chlorosis virus) and a cucumovirus (Cucumber mosaic virus). Both samples were positive in PTA-ELISA only with PRSV-W antiserum. This is the first report of C. pedata var. edulis as a natural host for PRSV-W in Brazil. References: (1) R. W. Robinson and D. S. Decker-Walters. 1997. Cucurbits. CAB International, UK.

scholarly journals First Report of Papaya ringspot virus and Zucchini yellow mosaic virus in Luohanguo (Siraitia grosvenorii) in China

Plant Disease ◽  
2005 ◽  
Vol 89 (5) ◽  
pp. 530-530 ◽  
Author(s):  
Y.-M. Liao ◽  
X.-J. Gan ◽  
B. Chen ◽  
J.-H. Cai
Keyword(s):  
Mosaic Virus ◽  
Zucchini Yellow Mosaic Virus ◽  
Viral Disease ◽  
Ringspot Virus ◽  
Yellow Mosaic Virus ◽  
Watermelon Mosaic Virus ◽  
Papaya Ringspot Virus ◽  
Rt Pcr ◽  
First Report ◽  
Siraitia Grosvenorii

Luohanguo, Siraitia grosvenorii (Swingle) C. Jeffrey, is a perennial cucurbitaceous plant that is an economically important medicinal and sweetener crop in Guangxi province, China. Surveys conducted during the summer to fall seasons of 2003-2004 in northern Guangxi showed symptoms typical of a viral disease, including leaf mottling, mosaic, vein clearing, curling, and shoestring-like distortion in the field. Mechanical inoculation of sap from leaves of symptomatic plants collected from the surveyed areas caused similar symptoms on tissue culture-derived healthy Luohanguo plants. Two sequences of 0.7 and 1.6 kb with 88 and 97% identity to Papaya ringspot virus (PRSV) and Zucchini yellow mosaic virus (ZYMV) were amplified using reverse transcription-polymerase chain reaction (RT-PCR) with purified flexuous viral particles or total RNA extracted from the symptomatic Luohanguo leaves as templates with conserved degenerate potyvirus primers (1). To confirm the results, primers specific for PRSV (PP1/PP2, genome coordinates 4064-4083/5087-5069, GenBank Accession No X97251) and ZYMV (ZP1/ZP2, genome coordinates 5540-5557/7937-7920, GenBank Accession No L31350) were used to perform RT-PCR from the same RNA templates. The expected 1.0- and 2.3-kb fragments were amplified and they were 90 and 95% identical to PRSV and ZYMV in sequence, respectively. Watermelon mosaic virus was not detected. To our knowledge, this is the first report of the occurrence of PRSV and ZYMV in Luohanguo. Reference: (1) A. Gibbs et al. J. Virol. Methods 63:9, 1997.

scholarly journals Yield and Virus Resistance of Summer Squash Cultivars and Breeding Lines in North Carolina

1998 ◽  
Vol 8 (1) ◽  
pp. 31-39 ◽  
Author(s):  
Jonathan R. Schultheis ◽  
S. Alan Walters
Keyword(s):  
North Carolina ◽  
Mosaic Virus ◽  
Virus Resistance ◽  
Zucchini Yellow Mosaic Virus ◽  
Ringspot Virus ◽  
Yellow Mosaic Virus ◽  
Watermelon Mosaic Virus ◽  
Papaya Ringspot Virus ◽  
Breeding Lines ◽  
Summer Squash

Yellow and zucchini squash (Cucurbita pepo L.) cultigens (breeding lines and cultivars) were evaluated over a 2-year (1995 and 1996) period in North Carolina. Yellow squash cultigens that performed well (based on total marketable yields) were `Destiny III', `Freedom III', `Multipik', XPHT 1815, and `Liberator III' in Fall 1995 and HMX 4716, `Superpik', PSX 391, `Monet', `Dixie', XPH 1780, and `Picasso' in Spring 1996. Some of the yellow squash cultigens evaluated had superior viral resistance: XPHT 1815, XPHT 1817, `Freedom III', `Destiny III', `Freedom II', TW 941121, `Prelude II', and `Liberator III' in Fall 1995 and XPHT 1815, `Liberator III', `Prelude II', and `Destiny III' in Fall 1996; all these cultigens were transgenic. The yellow squash cultigens that performed well (based on total marketable yields) in the Fall 1995 test had transgenic virus resistance (`Destiny III', `Freedom III', XPHT 1815, and `Liberator III') or had the Py gene present in its genetic background (`Multipik'). Based on total marketable yields, the best zucchini cultigens were XPHT 1800, `Tigress', XPHT 1814, `Dividend' (ZS 19), `Elite', and `Noblesse' in Fall 1995; and `Leonardo', `Tigress', `Hurricane', `Elite', and `Noblesse' in Spring 1996. The zucchini cultigens with virus resistance were TW 940966, XPHT 1814, and XPHT 1800 in Fall 1995 and XPHT 1800, XPHT 1776, XPHT 1777, XPHT 1814, and XPHT 1784 in Fall 1996. Even though TW 940966 had a high level of resistance in the Fall 1995 test, it was not as high yielding as some of the more susceptible lines. Viruses detected in the field were papaya ringspot virus (PRSV) and watermelon mosaic virus (WMV) for Fall 1995; while PRSV, zucchini yellow mosaic virus (ZYMV), and WMV were detected for Fall 1996. Summer squash cultigens transgenic for WMV and ZYMV have potential to improve yield, especially during the fall when viruses are more prevalent. Most transgenic cultigens do not possess resistance to PRSV, except XPHT 1815 and XPHT 1817. Papaya ringspot virus was present in the squash tests during the fall of both years. Thus, PRSV resistance must be transferred to the transgenic cultigens before summer squash can be grown during the fall season without the risk of yield loss due to viruses.

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