Inheritance of Resistance to Tomato Yellow Leaf Curl Virus (TYLCV) in Lycopersicon pimpinellifolium

Kasrawi, M. A.

doi:10.1094/pd-73-0435

Cited by 37 publications

(17 citation statements)

References 0 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…Breeding tomato plants resistant to TYLCV has proved to be a long-term effort. Earlier reports indicated that the genetic basis for the resistance/tolerance phenotype ranges from a single incompletely dominant gene (Hassan et al 1984;Kasrawi 1989) to a polygenic recessive pattern Cohen 1974, Pilowsky andCohen 1990), depending on the progenitor wild species. In addition to the apparently complicated genetics, the selection of resistant/tolerant plants was usually based solely on presence or absence of symptoms in infected fields, regardless of plant age and physiological state at the time of infection and of level of inoculum.…”

Section: Discussionmentioning

confidence: 99%

Response of tolerant breeding lines of tomato, Lycopersicon esculentum, originating from three different sources (L. peruvianum, L. pimpinellifolium and L. chilense) to early controlled inoculation by tomato yellow leaf curl virus (TYLCV)

et al. 1998

View full text Add to dashboard Cite

Selection of tomato plants supposedly tolerant to tomato yellow leaf curl virus (TYLCV), based solely on the absence of symptoms in an infested field can be misleading. An inoculation routine was therefore established to avoid escapes and to overcome difficulties associated with the age of the plant at the time of infection. The inoculation routine was applied to a selection of resistant/tolerant individuals generated through a diallel F, cross and to F2 segregating populations originating from three wild tomato species described as tolerant to TYLCV: Lycopersicon peruvianum EC 104395, Lycopersicon pimpinellifolium Hirsute and Lycopersicon chilense LA 1969. Clear differences were observed between susceptible symptomatic and tolerant symptomless tomato genotypes, indicating that the uncertainty resulting from escapes, from different levels of inoculum, and from the time of inoculation, can be eUminated. The genes involved in tolerance provided different levels of protection; combinations of various tolerant sources and levels in a single genotype gave a higher level of tolerance. Differences in level of protection were found between genes from the same source and between sources; none ofthe sources tested had complete dominance. The results obtained with the F2 segregating population showed that tolerance from L. pimpinellifolium is controlled by one major gene, that from L. chilense by two genes, and that from L. peruvianum by three genes with no dominant effect. The combination of sources for resistance can thus have positive or negative synergistic effects, or no effect. We suggest that a maximal level of tolerance can be obtained by the additive effect of the partly dominant genes from L. pimpinellifolium and L. chilense.

show abstract

Section: Discussionmentioning

confidence: 99%

Response of tolerant breeding lines of tomato, Lycopersicon esculentum, originating from three different sources (L. peruvianum, L. pimpinellifolium and L. chilense) to early controlled inoculation by tomato yellow leaf curl virus (TYLCV)

et al. 1998

View full text Add to dashboard Cite

show abstract

“…was conferred by a partially dominant gene Ty-1 (Pilowsky and Cohen, 1974), as was resistance from L. chilense that was identifi ed by Zamir et al (1994). A single dominant gene, Tylc, derived from L. pimpinellifolium (Kasarawi, 1989) and another from L. chilense (Gomez and Laterrot, 1997) Hassan et al (1984). Reactions of parents, F 2 and F 3 plants, and backcrosses of resistant F 2 plants to UC82 indicated that resistance derived from L. cheesmanii appears to be recessive and the narrow-sense heritability was 0.44.…”

mentioning

confidence: 99%

Quantitative Trait Loci for Tomato Yellow Leaf Curl Virus and Tomato Mottle Virus Resistance in Tomato

Agrama¹,

Scott²

2006

jashs

View full text Add to dashboard Cite

ADDITIONAL INDEX WORDS. Lycopersicon chilense, mapping, QTL, RAPD, ToMoV, TYLCV ABSTRACT. The genetic basis of resistance to tomato yellow leaf curl virus (TYLCV) and tomato mottle virus (ToMoV) was studied in three different mapping populations of tomato (Lycopersicon esculentum Mill.). Bulked segregant analysis (BSA) was used to identify random amplifi cation of polymorphic DNA (RAPD) markers linked to TYLCV and ToMoV resistance. Segregated RAPD markers associated with resistance were linked to morphological markers self-pruning (sp) and potato leaf (c) on chromosome 6. RAPD genetic linkage maps of chromosome 6 were constructed for each of the three populations. Common mapped markers revealed straightforward homologies between the chromosome 6 linkage group of the three populations. Multiple-QTL mapping (MQM) was used to identify quantitative trait loci (QTL) for resistance linked to chromosome 6. These revealed that the resistance against TYLCV and ToMoV was mainly explained by two QTL in two populations and one QTL in another. For all of the resistance QTL detected, the favorable allele was provided by the resistant parents. The presence of three different sources of TYLCV and ToMoV resistance, and the markers in tight linkage with them, provide a means of systemically combining multiple resistance genes. Successful cloning of the R gene from tomatoes would lead to deeper understanding of the molecular basis of resistance to TYLCV and ToMoV, and might also shed light on the evolution of resistance genes in plants in general.

show abstract

“…In L. pimpinellifolium 'LA 121', there is an indication of monogenic incomplete dominance (Pilowsky & Cohen, 1974). Kasrawi (1989) also found a major dominant gene in L. pimpinellifolium (named as Tylc) controlling resistance to TYLCV isolates from Jordan. Quantitative inheritance with some levels of dominance was observed in a different L. pimpinellifolium source (Kasrawi & Mansour, 1994).…”

Section: Resistance Assessment: Detection Of Viral Dna Via Dot-blot Amentioning

confidence: 97%

Inheritance of resistance to the bipartite Tomato chlorotic mottle begomovirus derived from Lycopersicon esculentum cv. ‘Tyking’

et al. 2005

View full text Add to dashboard Cite

Severe outbreaks of bipartite begomoviruses (family Geminiviridae) have been observed on tomatoes after the introduction of the whitefly Bemisia tabaci (biotype B) in Brazil. The Lycopersicon esculentum line 'TX 468-RG' was identified as one of the best sources of broad-spectrum resistance to species comprising the tomato-infecting Begomovirus complex in Brazil. The genetic basis of resistance to one Begomovirus isolate was investigated using populations from the cross between 'TX 468-RG' (P 1 ) and the susceptible line 'Ohio 8245' (P 2 ). Parental lines, F 1 , backcross (BC) to P 1 and BC to P 2 and F 2 generations were inoculated at the two true-leaf stage using 20 viruliferous whiteflies per plant. Assessment was done two weeks after inoculation based upon visual analysis of symptom expression. The ratio of resistant to susceptible plants closely fit to a single recessive gene (locus) model. The sequence analysis indicated that the Begomovirus isolate used in this assay was closely related to the bipartite Tomato chlorotic mottle virus. Therefore, this gene/locus, was tentatively named tcm-1 (tomato chlorotic mottle virus resistance-1). This locus has been transferred to distinct tomato cultivars and levels of resistance similar to that of 'TX 468-RG' were observed in advanced (F 8 and F 9 ) generations. In addition, breeding lines carrying the tcm-1 locus were also resistant to other Brazilian bipartite tomato-infecting Begomovirus species.

show abstract

Inheritance of Resistance to Tomato Yellow Leaf Curl Virus (TYLCV) in Lycopersicon pimpinellifolium

Cited by 37 publications

References 0 publications

Response of tolerant breeding lines of tomato, Lycopersicon esculentum, originating from three different sources (L. peruvianum, L. pimpinellifolium and L. chilense) to early controlled inoculation by tomato yellow leaf curl virus (TYLCV)

Response of tolerant breeding lines of tomato, Lycopersicon esculentum, originating from three different sources (L. peruvianum, L. pimpinellifolium and L. chilense) to early controlled inoculation by tomato yellow leaf curl virus (TYLCV)

Quantitative Trait Loci for Tomato Yellow Leaf Curl Virus and Tomato Mottle Virus Resistance in Tomato

Inheritance of resistance to the bipartite Tomato chlorotic mottle begomovirus derived from Lycopersicon esculentum cv. ‘Tyking’

Contact Info

Product

Resources

About