Incidence and management of virus diseases of cucurbits in Lebanon

Abou‐Jawdah, Y.; Sobh, H.; El-Zammar, S.; Fayyad, Adnan; Lecoq, Hervé

doi:10.1016/s0261-2194(99)00100-3

Cited by 40 publications

(29 citation statements)

References 17 publications

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“…Therefore, this work has confirmed the presence of WMV and PRSV‐W in Cyprus by using more reliable and specific methods. Similar results concerning the prevalence and distribution of CMV, ZYMV and CABYV have also been reported in a recent survey in Lebanon, indicating that ZYMV and CABYV were the most common viruses in zucchini (64% and 65%, respectively) and melon (44% and 30%, respectively) whereas CMV was rather rare (Abou‐Jawdanh et al., 2000). In Greece, the incidence was reported to be slightly different and the main cucurbit viruses were WMV (67%), ZYMV (27%), CMV (20%), CABYV (20%), PRSV‐W (3%) and SqMV (2%) (Papavassiliou et al., 2002).…”

Section: Discussionsupporting

confidence: 88%

Incidence of Viruses Infecting Cucurbits in Cyprus

Papayiannis¹,

Ioannou²,

Boubourakas³

et al. 2005

Journal of Phytopathology

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In a survey during 2000–2002 to determine the identity and prevalence of viruses affecting cucurbit crops in Cyprus, 2993 samples of cucumber, zucchini, melon and watermelon were collected from the five major cucurbit‐growing areas in Cyprus. Zucchini yellow mosaic virus (ZYMV), Papaya ringspot virus type W (PRSV‐W), Watermelon mosaic virus (WMV), Cucurbit aphid‐borne yellows virus (CABYV), Cucumber mosaic virus (CMV) and Squash mosaic virus (SqMV) were detected by enzyme‐linked immunosorbent assay (ELISA), and Cucurbit yellow stunting disorder virus (CYSDV), Beet pseudo‐yellows virus (BPYV) and Cucumber vein yellowing virus (CVYV) by reverse transcription polymerase chain reaction (RT–PCR). ZYMV was the most prevalent virus of cucurbits in Cyprus with an overall incidence of 45%. PRSV‐W, CABYV and WMV were detected in 20.8%, 20.8% and 7.8% of the samples tested, respectively. CYSDV was detected in most greenhouse cucumber samples with yellowing symptoms (88.1%), whereas BPYV and CVYV were found in only 2.4% and 9.5%, respectively, of samples. CMV and SqMV were not detected in any cucurbitaceous crop during this survey.

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Section: Discussionsupporting

confidence: 88%

Incidence of Viruses Infecting Cucurbits in Cyprus

Papayiannis¹,

Ioannou²,

Boubourakas³

et al. 2005

Journal of Phytopathology

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“…This important percentage reflected the high incidence of CABYV in the fields (Table 1), and demonstrated the prevalence of CABYV in squash-growing fields of Egypt. Such a high incidence of CABYV was reported also in other countries like Lebanon, Spain, Tunisia and China (Abou-Jawdah et al 2000;Kassem et al 2007;Mnari-Hattab et al 2009;Shang et al 2009). In accord with our observations, all these regions had an abundance of aphids in open fields.…”

Section: Resultssupporting

confidence: 64%

Cucurbit aphid-borne yellows virus in Egypt

Omar

Bagdady

2012

Phytoparasitica

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During 2010, yellowing symptoms were frequently observed in cultivated squash fields in Egypt. A total of 717 symptomatic squash leaf samples were collected from four regions where squash cultivation is of economic importance for the country: Kafrelsheikh, El-Behira, El-Sharkia and El-Ismailia. Serological analysis showed that 95.6% of the symptomatic squash samples were infected by Cucurbit aphid-borne yellows virus (CABYV), and visual estimation of the incidence of yellowing symptoms suggested a very high incidence of CABYV in the fields. Twelve CABYV isolates were characterized by sequencing two regions of the viral genome, open reading frame (ORF) 3 and ORFs 4/5. Overall, Egyptian isolates were very similar among them, and had higher similarity values with a French than with a Chinese isolate. The average nucleotide diversity for ORF 3 was significantly higher than for the other two regions, indicating that variability is not evenly distributed along the viral genome. The ratios between nucleotide diversity values in non-synonymous (d N ) and synonymous (d S ) positions (d N /d S ) for each ORF showed that the three ORFs are evolving under different pressures, although predominantly under purifying selection. Phylogenetic analyses revealed that these Egyptian isolates, with only one exception, shared the same clade with a French isolate. Moreover, these analyses suggested that Egyptian isolates belong to the Mediterranean group described previously.

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“…[12] reported major economic loss due to cucurbit viral diseases in Lebanon. A survey conducted revealed the presence of Zucchini yellow mosaic Potyvirus (ZYMV) and Cucurbit aphid-borne yellows Polerovirus (CABYV) are the most common viruses followed by Watermelon mosaic Potyvirus (WMV), Papaya ringspot Potyvirus-watermelon strain (PRSV-W) and to a lesser extent Cucumber mosaic Cucumovirus (CMV).…”

Section: Resultsmentioning

confidence: 99%

Occurrence and distribution of viral diseases of bittergourd (Momordica charantia L) in major cultivated areas of Kerala

2017

IJAPSA

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In the survey conducted at five locations in Thiruvananthapuram district , Pappanchani area recorded highest incidence of viral disease (60%) while highest Vulnerability Index (V.I) was recorded from Vellayani (56.00). In Idukki district, six major bittergourd cultivating areas were surveyed among which Rajakumary area recorded the highest disease incidence (100%) and V.I (82.00). In Palakkad district, five locations were surveyed, among which Panackatri and Thekkepotta recorded highest disease incidence of 88% and highest V.I (69.00 ) . Symptoms associated with the disease include yellow mottling, mosaic, blistering, leaf curl and reduction in leaf size. Yellow mosaic and blistering is also seen in case of severe infection finally leading to stunting of the plant, reduced flowering and fruiting and hairyness on the stem. Enzyme Linked Immunosorbent Assay (ELISA) and Dot Immunobinding Assay (DIBA) revealed the presence of three viruses belonging to Begomo, CMV and POTY group causing a mixed infection in bittergourd.

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Incidence and management of virus diseases of cucurbits in Lebanon

Cited by 40 publications

References 17 publications

Incidence of Viruses Infecting Cucurbits in Cyprus

Incidence of Viruses Infecting Cucurbits in Cyprus

Cucurbit aphid-borne yellows virus in Egypt

Occurrence and distribution of viral diseases of bittergourd (Momordica charantia L) in major cultivated areas of Kerala

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