Genetic Diversity of Lettuce for Resistance to Bacterial Leaf Spot Caused by <i>Xanthomonas campestris</i> pv. <i>vitians</i>

Bull, Carolee T.; Goldman, Polly H.; Hayes, Ryan J.; Madden, Laurence V.; Koike, S. T.; Ryder, Edward

doi:10.1094/php-2007-0917-02-rs

Cited by 25 publications

(43 citation statements)

References 11 publications

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“…Previous studies have reported differences in resistance among lettuce types when tested against bacterial and fungal diseases. Cultivars of green leaf and batavia lettuces were found more resistant than other types to bacterial spot disease (Bull et al, 2007), and green leaf and looseleaf lettuces were determined as resistant and susceptible, respectively, to black root rot (Sala et al, 2008). In Brazil, green leaf lettuce, which had several genotypes classified as S to soft rot in our study, represent 70 % of the market share.…”

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confidence: 99%

Lettuce genotype resistance to "soft rot" caused by Pectobacterium carotovorum subsp. carotovorum

Félix

Oliveira

Mariano

et al. 2014

Sci. agric. (Piracicaba, Braz.)

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Soft rot, caused by Pectobacterium carotovorum subsp. carotovorum (Pcc), is the main bacterial disease affecting lettuce (Lactuca sativa L.) crops in Brazil and leads to significant yield losses. This study aimed to assess the reaction of lettuce genotypes to soft rot induced by a virulent isolate and the stability of the resistance to three isolates varying in virulence. Using a descriptive ordinal scale ranging from 1 to 9 a classification system was defined: class 1 = resistant (R): severity (Sev) < 1.5; class 2 = moderately resistant (MR): 1.5 ≤ Sev < 2.5; class 3 = susceptible (S): 2.5 ≤ Sev < 3.5; class 4 = highly susceptible (HS): Sev ≥ 3.5). Of the 41 tested genotypes, 14 were classified as MR and 27 as S when inoculated with a Pcc isolate of intermediate virulence. Eleven of these genotypes (four S and seven MR) were selected to test their resistance stability against three other isolates with an increasing degree of virulence (Pcc-36 < Pcc-A1.1 < Pcc-23). Out of the 11 genotypes eight retained the original classification and three moved from S to MR resistant class when challenged with the least virulent isolate. Vitória de Santo Antão was the only genotype classified as MR for all tested isolates and is a promising candidate for durable soft rot resistance breeding.

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confidence: 99%

Lettuce genotype resistance to "soft rot" caused by Pectobacterium carotovorum subsp. carotovorum

Félix

Oliveira

Mariano

et al. 2014

Sci. agric. (Piracicaba, Braz.)

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“…This disease was first reported in South Carolina and Virginia in the United States in 1918 (Brown, 1918). Since 1990s, substantial outbreaks of BLS have been reported with increasing frequency in some of the major lettuce growing regions, such as California (Barak et al, 2001;Bull et al, 2007;Bull and Koike, 2005;Umesh et al, 1996), Florida (Lu and Raid, 2013;Pernezny et al, 1995), and Ohio (Sahin and Miller, 1997). Currently, there are no chemicals available to control the disease.…”

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confidence: 99%

“…Tall Guzmaine and butterhead breeding line B-1190. Different levels of host resistance have been reported in commercial lettuce cultivars or germplasm by inoculation with single Xcv strain (Carisse et al, 2000;Lu and Raid, 2013;Pernezny et al, 2000) or a mixture of Xcv strains (Bull et al, 2007;Hayes et al, 2014;Sahin and Miller, 1997). However, information is limited on responses of resistant lettuce genotypes to different Xcv strains.…”

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confidence: 99%

Diverse Responses of Lettuce Cultivars and Germplasm Lines to Infections of Three Isolates of Xanthomonas campestris pv. vitians

Wang

Raid

et al. 2015

horts

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Bacterial leaf spot (BLS) disease, caused by Xanthomonas campestris pv. vitians (Xcv) has become an increasingly damaging disease in the lettuce production areas of the United States. To understand the nature of the outbreaks of this disease, the pathogenic variations for causing disease were evaluated on 29 lettuce cultivars and germplasm lines using three Xcv isolates recovered in different years from the Everglades Agriculture Area (EAA) of Florida. Significant differences were shown in both the BLS incidences and disease severities among the three Xcv isolates, and the rank from high virulence to less severity was L7 > JF196 > NF1. Our results suggest that the pathogenic variations of the isolates may have been associated with the epidemic outbreaks of BLS in EAA. Among the 29 lettuce genotypes, the host plant resistance was characterized by specific host genotype and Xcv isolate interactions. The leaf lettuce PI358001-1 was consistently in the high resistant category to all three Xcv isolates, and is a promising resistant source for development of resistant cultivars.

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“…The cultivar ‘Little Gem’ is reported as resistant to bacterial leaf spot caused by Xanthomonas campestris pv. vitians (Bull et al. 2007).…”

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confidence: 99%

“…The cultivar ÔLittle GemÕ is reported as resistant to bacterial leaf spot caused by Xanthomonas campestris pv. vitians (Bull et al 2007). ÔPavaneÕ and ÔLittle GemÕ have been described as resistant to big vein (Bos andHuijberts 1990, Hayes et al 2006).…”

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confidence: 99%

A single recessive gene conferring short leaves in romaine × Latin type lettuce (Lactuca sativa L.) crosses, and its effect on plant morphology and resistance to lettuce drop caused by Sclerotinia minor Jagger

Hayes¹,

Subbarao

2010

Plant Breeding

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Understanding the relationship between plant morphology and disease resistance is crucial to successful lettuce breeding. Latin type cultivars are a potential useful source of resistance to Sclerotinia minor for breeding resistant romaine cultivars. However, resistance in Latin cultivars may be conditioned by their relatively short stature. The objective of this research was to determine the segregation for plant height and the relationship between plant height and S. minor resistance in romaine · Latin crosses. The frequency of short plants was conditioned by a single recessive gene in F 1 , F 2 and F 3 families from nine romaine · Latin crosses tested in 2007, 2008 and 2009 field experiments. The gene, named short leaf 1 (sl1), affects only leaf length in rosette plants and is morphologically distinct from other dwarfing genes. In two S. minor-infested field experiments with 75 F 3 romaine · ÔEruptionÕ families, no difference in disease incidence was detected between short (sl1sl1), tall (Sl1Sl1) or segregating families. Therefore, development of resistant romaine cultivars from crosses with ÔEruptionÕ is feasible.

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Genetic Diversity of Lettuce for Resistance to Bacterial Leaf Spot Caused by Xanthomonas campestris pv. vitians

Cited by 25 publications

References 11 publications

Lettuce genotype resistance to "soft rot" caused by Pectobacterium carotovorum subsp. carotovorum

Lettuce genotype resistance to "soft rot" caused by Pectobacterium carotovorum subsp. carotovorum

Diverse Responses of Lettuce Cultivars and Germplasm Lines to Infections of Three Isolates of Xanthomonas campestris pv. vitians

A single recessive gene conferring short leaves in romaine × Latin type lettuce (Lactuca sativa L.) crosses, and its effect on plant morphology and resistance to lettuce drop caused by Sclerotinia minor Jagger

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