The Emergence Of Whitefly-Transmitted Geminiviruses in Tomato in the Western Hemisphere

Polston, Jane E.; Anderson, Pamela K.

doi:10.1094/pdis.1997.81.12.1358

Cited by 387 publications

(265 citation statements)

References 52 publications

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“…TYLCV was first reported from Israel in 1930s and it has since been reported in many countries in the Mediterranean basin, Africa, Asia, Europe, Australia, the Caribbean basin and the America (Czosnek et al, 1990;Cohen and Antignus, 1994;Hajimorad et al, 1996;Czosnek and Laterrot, 1997;Polston and Anderson, 1997;Nakhla and Maxwell, 1998). In the last few decades, TYLCV is expanding rapidly and new infected areas have been reported in several parts of the world especially in the New World.…”

Section: Introductionmentioning

confidence: 99%

Genetic diversity, host range, and distribution of tomato yellow leaf curl virus in Iran

Shirazi¹,

Mozafari²,

Rakhshandehroo³

et al. 2014

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Summary. -Tomato yellow leaf curl virus (TYLCV) is considered one of the most important tomato pathogens in tropical and subtropical regions including Iran. During the years 2007 to 2009, a total number of 510 symptomatic and asymptomatic vegetable, ornamental and weed samples were collected from fields and greenhouses in ten provinces of Iran. Symptoms included stunting, yellowing, leaf curl and flower senescence. PCR with specific primers showed TYLCV infection in 184 samples (36%) such as cucumber, pepper, tomato and several weeds from seven provinces. Based on the geographical origin, host range and symptoms, twenty three representative isolates were selected for phylogenetic analysis. An amplicon with a size about 608 base pair (bp) comprising partial sequence of the coat (CP) and movement protein (MP) coding regions of the viral genome was sequenced and compared with the corresponding selected sequences available in GenBank for Iran and worldwide. Phylogenetic analyses on the basis of the nucleotide sequences indicated two geographically separated clades. Isolates collected from Hormozgan, Khuzestan and Kerman provinces were grouped together with other Iranian isolates including TYLCV-Ir2, TYLCV-Kahnooj, and an isolate from Oman. It was also revealed that isolates collected from Boushehr, Fars, Tehran, and Isfahan placed close to the Iranian isolate TYLCV-Abadeh and isolates from Israel and Egypt. No correlation was found between the genetic variation and the host species, but selected Iranian isolates were grouped on the basis of the geographical origins. Results of this study indicated a high genetic diversity among Iranian TYLCV isolates.

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Section: Introductionmentioning

confidence: 99%

Genetic diversity, host range, and distribution of tomato yellow leaf curl virus in Iran

Shirazi¹,

Mozafari²,

Rakhshandehroo³

et al. 2014

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“…Based on phylogenetic studies and genome arrangement, bipartite begomoviruses have been divided broadly into two groups: the Old World (OW) viruses (eastern hemisphere, Europe, Africa, Asia) and the New World (NW) viruses (western hemisphere, the Americas) [30,31,34]. Begomovirus genomes have a number of characteristics that distinguish OW and NW viruses.…”

mentioning

confidence: 99%

Detection of Corchorus golden mosaic virus Associated with Yellow Mosaic Disease of Jute (Corchorus capsularis)

et al. 2012

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Yellow mosaic disease, caused by a whitefly transmitted New World Begomovirus, named Corchorus golden mosaic virus (CoGMV), is emerging as a serious biotic constraint for jute fibre production in Asia. For rapid and sensitive diagnosis of the Begomovirus associated with this disease, a non-radiolabelled diagnostic probe, developed against the DNA A component of the east Indian isolate of CoGMV, detected the presence of the virus in infected plants and viruliferous whiteflies following Southern hybridization and nucleic acid spot hybridization tests. Presence of the virus was also confirmed when polymerase chain reaction amplification was performed using virus-specific primers on DNA templates isolated from infected plants and viruliferous whiteflies.

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“…Currently, CMD does not occur in the Americas, but the main insect vector (whitefly) has been reported in this region, while its alternative form, biotype B (B. argentifolia) is widespread, and according to Polston and Anderson (1997), its host range includes cassava. Therefore, the prospect for the arrival of the disease in Brazil and the possible adaptation of biotype B for feeding on cassava require breeding programs to develop prevention measures.…”

Section: Prospects For Cassava Breeding Aiming To Improve Cmd Resistancementioning

confidence: 99%

Molecular-assisted selection for resistance to cassava mosaic disease in Manihot esculenta Crantz

Carmo

Silva

Oliveira

et al. 2015

Sci. agric. (Piracicaba, Braz.)

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The geminivirus complex known as cassava mosaic disease (CMD) is one of the most devastating viruses for cassava (Manihot esculenta Crantz). The aim of this study was to use molecular-assisted selection (MAS) to identify CMD-resistant accessions and ascertain promising crosses with elite Brazilian varieties. One thousand two hundred twenty-four accessions were genotyped using five molecular markers (NS169, NS158, SSRY028, SSRY040 and RME1) that were associated with resistance to CMD, along with 402 SNPs (single-nucleotide polymorphism). The promising crosses were identified using a discriminant analysis of main component (DAPC), and the matrix of genomic relationship was estimated with SNP markers. The CMD1 gene, previously described in M. glaziovii, was not found in M. esculenta. In contrast, the CMD2 gene was found in 5, 4 and 5 % of cassava accessions, with flanking markers NS169+RME1, NS158+RME1 and SSRY28+RME1, respectively. Only seven accessions presented all markers linked to the CMD resistance. The DAPC of the seven accessions along with 17 elite cassava varieties led to the formation of three divergent clusters. Potential sources of resistance to CMD were divided into two groups, while the elite varieties were distributed into three groups. The low estimates of the genomic relationship (ranging from -0.167 to 0.681 with an average of 0.076) contributed to the success in identifying contrasting genotypes. The use of MAS in countries where CMD is a quarantine disease constitutes a successful strategy not only for identifying the resistant accessions but also for determining the promising crosses.

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The Emergence Of Whitefly-Transmitted Geminiviruses in Tomato in the Western Hemisphere

Cited by 387 publications

References 52 publications

Genetic diversity, host range, and distribution of tomato yellow leaf curl virus in Iran

Genetic diversity, host range, and distribution of tomato yellow leaf curl virus in Iran

Detection of Corchorus golden mosaic virus Associated with Yellow Mosaic Disease of Jute (Corchorus capsularis)

Molecular-assisted selection for resistance to cassava mosaic disease in Manihot esculenta Crantz

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