Inheritance of Resistance toColletotrichum acutatuminFragaria×ananassa

Denoyés-Rothan, B.; Guérin, G.; Lerceteau-Köhler, Estelle; Risser, G.

doi:10.1094/phyto-95-0405

Cited by 38 publications

(13 citation statements)

References 26 publications

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“…Colletotrichum gloeosporioides causes up to 80% plant death in nurseries and yield losses of >50% , being a major disease of cultivated strawberry (Buddie et al 1999;Denoyes-Rothan et al 2004;Leandro et al 2001). Anthracnose strawberry symptoms produced by C. acutatum, C. fragariae and C. gloeosporioides are similar (Denoyes-Rothan et al 2003), and although C. acutatum mainly causes fruit rots, it can also infect other parts of the plants such as crowns, petioles, leaves and even roots .…”

Section: Introductionmentioning

confidence: 99%

Phylogenetic relationships and genome organisation of Colletotrichum acutatum causing anthracnose in strawberry

et al. 2009

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Colletotrichum acutatum is a major plant pathogen which infects a broad range of host plants. Extensive research has been carried out on C. acutatum populations affecting various hosts in different geographical locations, showing a considerable genotypic and phenotypic diversity. Anthracnose, caused by Colletotrichum spp., is the major disease of cultivated strawberry, Fragaria x ananassa. In the present study, the phylogenetic relationships within a worldwide sample of fifty-two C. acutatum isolates collected from different strawberry cultivars have been established, by using ITS sequence analyses. Twenty-nine isolates clustered in the molecular group A2, in which seventeen out of eighteen Spanish isolates were included; this may indicate that the group A2 is the key group in Spain. The molecular polymorphism among C. acutatum isolates was determined by southern-blot hybridisation using a telomeric DNA probe. Results indicated that the minimum number of estimated chromosomes ranges between six and nine. The molecular characterisation of C. acutatum isolates was completed using the Pulsed-Field Gel Electrophoresis (PFGE) technique that resolved from six to nine chromosomal bands, this number being coincident with the number of chromosomes obtained by telomeric fingerprinting. The minimum total genome size was estimated to range from 29 to 36 Mb. Comparison of karyotypes patterns and southern-blot analysis demonstrated a high level of molecular polymorphism among C. acutatum isolates from different origins.

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Section: Introductionmentioning

confidence: 99%

Phylogenetic relationships and genome organisation of Colletotrichum acutatum causing anthracnose in strawberry

et al. 2009

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“…SCAR markers developed for the Rpf1 gene are being used to identify strawberry germplasm with resistance to P. fragariae (Haymes et al, 2000;Rugienius et al, 2006). Denoyes-Rothan et al (2005) demonstrated that a single gene appears to be linked to resistance to C. acutatum pathogenicity group 2. Although the SCAR markers developed by Lerceteau-Koḧler et al (2005) are not diagnostic for resistance to anthracnose diseases incited by C. gloeosporioides, C. fragariae, or C. acutatum pathogenicity group 1 isolates, they are part of a growing molecular toolbox available to aid strawberry breeders in making better decisions concerning their breeding germplasm.…”

Section: Discussionmentioning

confidence: 99%

“…and Elsanta (susceptible to both groups)using a subset of 34 European C. acutatum isolates and the American C. acutatum isolate Goff. Denoyes-Rothan et al (2005) examined the inheritance of high-and intermediate-level plant resistance to C. acutatum isolates of pathogenicity group 2 and found that the inheritance of a dominant gene (Rca2) controlled strawberry resistance to that group. Lerceteau-K€ ohler et al (2005) identified two SCAR markers and used them to screen European and American strawberry genotypes, reported in the literature as resistant or susceptible, for the presence of the Rca2 gene.…”

mentioning

confidence: 99%

Comparison of Anthracnose Resistance with the Presence of Two SCAR Markers Associated with the Rca2 Gene in Strawberry

Miller-Butler¹,

Smith²,

Kreiser³

et al. 2019

horts

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Strawberry anthracnose diseases are caused primarily by three Colletotrichum species: C. acutatum J.H. Simmonds, C. fragariae A.N. Brooks, and C. gloeosporioides (Penz.) Penz. & Sacc. Molecular markers are being used in breeding programs to identify alleles linked to disease resistance and other positive agronomic traits. In our study, strawberry cultivars and breeding germplasm with known anthracnose susceptibility or resistance to the three anthracnose-causing Colletotrichum species were screened for two sequence characterized amplified region (SCAR) markers linked to the Rca2 gene. The Rca2 resistant allele SCAR markers were associated with varying degrees of significance for a strawberry plant’s anthracnose resistance to C. fragariae but not to C. acutatum or C. gloeosporioides. Although the presence or absence of the markers associated with the Rca2 resistance gene is an imperfect indicator of anthracnose resistance, it may serve as a useful starting point in selecting germplasm for breeding programs.

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“…The second major marker-trait association for disease resistance was for Rca2, a single gene for resistance to Colletotrichum acutatum pathogenicity group 2, which causes anthracnose fruit rot as well as symptoms on other plant parts including leaves and petioles [27]. Lerceteau-Kohler et al [48] used BSA to identify makers segregating with resistance conferred by Rca2 and developed two SCAR markers linked to the dominant resistance allele.…”

Section: Disease Resistancementioning

confidence: 99%

Applications of molecular markers in strawberry

Whitaker

2011

Journal of Berry Research

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This review examines current and potential applications of molecular markers in strawberry (Fragaria spp.). The most prevalent uses of markers in strawberry are for analyses of genetic diversity, genetic mapping, and cultivar identification. Cultivar identification is by far the most important use of markers to date for the protection of intellectual property as well as to confirm the identity of nursery stock through multiple cycles of asexual propagation. These applications have been accelerated by continuous discovery of simple sequence repeat markers and the development of multiplexed sets. Mapping studies have confirmed the allopolyploid genome structure of cultivated strawberry and shed light onto genetic events that punctuate its domestication. Though marker-trait associations have been identified for disease resistance, photoperiodic flowering, and sex expression, markerassisted selection in breeding is currently confined to a few entities in the private sector. Pedigree-based analysis holds promise for identifying additional marker-trait associations and simultaneously mining alleles in multiple genetic backgrounds. Meanwhile, the completion of the diploid strawberry genome sequence promises to accelerate candidate-gene approaches for marker discovery.

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Inheritance of Resistance toColletotrichum acutatuminFragaria×ananassa

Cited by 38 publications

References 26 publications

Phylogenetic relationships and genome organisation of Colletotrichum acutatum causing anthracnose in strawberry

Phylogenetic relationships and genome organisation of Colletotrichum acutatum causing anthracnose in strawberry

Comparison of Anthracnose Resistance with the Presence of Two SCAR Markers Associated with the Rca2 Gene in Strawberry

Applications of molecular markers in strawberry

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