Resistance to Verticillium Dahliae Race 2 and Its Introgression Into Processing Tomato Cultivars

Stamova, L.

doi:10.17660/actahortic.2005.695.28

Cited by 10 publications

(5 citation statements)

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“…Symptom ratings (i.e. disease scores) were scored relative to uninoculated control plants at 5 and 10 days post-inoculation (dpi) using a 0-5 scale (Chen 2003) adapted from Busch and Smith (1981) and Stamova (2005). An abbreviated key follows: 0, plant healthy; 0.5, premature loss of both cotyledons; 1.0, yellowing and Xaccidity of the Wrst leaf; 2.0, lower 40% of leaves aVected; 3, lower 60% of leaves aVected; 4, lower 80% of leaves aVected; 5, plant dead.…”

Section: Plant Inoculation and Symptom Scoringmentioning

confidence: 99%

Plant-endophyte interplay protects tomato against a virulent Verticillium

Shittu

Castroverde

Nazar

et al. 2008

Planta

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Endophytes, bacterial, fungal or viral, colonize plants often without causing visible symptoms. More important, they may benefit host plants in many ways, most notably by preventing diseases caused by normally virulent pathogens. Craigella tomatoes (Lycopersicon esculentum Mill.) can be infected with Verticillium dahliae Kleb., either race 1 (Vd1) or a non-host isolate Dvd-E6 resulting in susceptibility or tolerance, respectively. The present study sought to determine whether Dvd-E6 is endophytic and can protect tomato against Vd1. The total amount of Verticillium in stems and roots was determined by quantitative PCR; the relative amounts of Vd1 and Dvd-E6 were assessed by restriction fragment polymorphism. When Dvd-E6 infects before or together with Vd1, Vd1 is excluded almost completely from the root but, when Vd1 infects first, Dvd-E6 can compete on an equal basis. Previous studies suggested that Dvd-E6 suppresses symptom-related genes, raising the possibility that Dvd-E6 simultaneously induces tolerance to Vd1. This does not seem to be entirely the case since the minimal symptoms following Vd1 infection of Dvd-E6 tolerant Craigella result, at least in part, from restricted Vd1 colonization. Furthermore, when Vd1 and Dvd-E6 are cultured on PDA plates alone or together, the growth rates are similar and neither is inhibitory to the other. Dvd-E6 does not outgrow or inhibit Vd1, in vitro. The protective effect apparently requires interplay between Dvd-E6 and the plant. Expression analyses of tomato genes involved in resistance and defence support this interpretation.

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Section: Plant Inoculation and Symptom Scoringmentioning

confidence: 99%

Plant-endophyte interplay protects tomato against a virulent Verticillium

Shittu

Castroverde

Nazar

et al. 2008

Planta

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“…Since the emergence of V. dahliae race 2 strains on tomato, several additional resistance sources to Verticillium wilt were reported in tomato and other crops Laterrot, 1984;Baergen et al, 1993;Stamova, 2005;Klosterman et al, 2009;Yadeta, 2012;Usami et al, 2017). Although these studies all had the similar goal to identify resistances to Verticillium wilt and to unravel the underlying genetics, the methods to inoculate plants and subsequently phenotype Verticillium wilt symptoms varied considerably among these studies.…”

Section: Discussionmentioning

confidence: 99%

Adding by subtracting : Impairing tomato susceptibility genes to obtain resistance to Verticillium wilt

Hanika¹

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“…Since the emergence of V. dahliae race 2 strains on tomato, several additional resistance sources to Verticillium wilt were reported in tomato and other crops Gardner 1982b, 1982a;Latterot 1984;Baergen et al 1993;Stamova 2005;Klosterman et al 2009;Usami et al 2017;Yadeta 2012). Although these studies all had the similar goal to identify resistances to Verticillium wilt and to unravel the underlying genetics, the methods to inoculate plants and subsequently phenotype Verticillium wilt symptoms varied considerably among these studies.…”

Section: Discussionmentioning

confidence: 99%

“…The increasing incidence of race 2 strains motivated researchers to search for novel resistance sources. Although multiple resistances in tomato were reported Gardner 1982b, 1982a;Latterot 1984;Baergen et al 1993;Stamova 2005), none of these studies reported to have identified QTLs or genes underlying these resistances. In 2017, Usami et al reported qualitative resistance against V. dahliae based on a single dominantly inherited locus named "V2" (Usami et al 2017).…”

Section: Breeding For Resistance Against V Dahliae In Tomatomentioning

confidence: 99%

“…The increasing emergence of race 2 strains has led to a search for novel resistance sources. Although multiple additional race 2-resistant tomato accessions have been reported Gardner 1982b, 1982a;Latterot 1984;Baergen et al 1993a;Stamova 2005;Yadeta 2012; Klosterman et al 2009), no QTLs or genes have been mapped for this resistance yet. However, a recent report describes resistance against race 2 of V. dahliae in the tomato rootstock cultivar Aibou (Usami et al 2017), which is likely based on a dominant R gene named "V2".…”

Section: Introductionmentioning

confidence: 99%

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Identification and inheritance of quantitative resistance against Verticillium dahliae in tomato

Vermeulen¹

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How plants cope with pathogens: tolerance and resistanceIn the hundreds of millions of years of engaging in antagonistic relationships with pathogens, plants have evolved various mechanisms to cope with pathogens. Broadly speaking, these mechanisms can be divided into tolerance and resistance. Tolerance generally refers to mechanisms of the plant which reduce the damage of the pathogen infection withoutThe Tomato: From a werewolves' snack to major vegetable crop According to old legends from pre-Columbian America, the tomato was initially known as a fruit eaten by werewolves and wolves. This is reflected in the old name of the tomato, Lycopersicon esculentum, which means edible (esculentum) wolf peach (lyco-persicon) (Preedy and Watson 2019). Although Linneaus treated the tomato as a member of the genus Solanum already in 1753, little consensus existed for a long time whether tomato should indeed be part of the genus Solanum, or whether it should be treated as a distinct Lycopersicon genus. Only when DNA sequencing technology accelerated phylogenetic analyses, it became widely accepted that the tomato is deeply nested in the genus Solanum, and should be renamed as

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Resistance to Verticillium Dahliae Race 2 and Its Introgression Into Processing Tomato Cultivars

Cited by 10 publications

References 0 publications

Plant-endophyte interplay protects tomato against a virulent Verticillium

Plant-endophyte interplay protects tomato against a virulent Verticillium

Adding by subtracting : Impairing tomato susceptibility genes to obtain resistance to Verticillium wilt

Identification and inheritance of quantitative resistance against Verticillium dahliae in tomato

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