QTL mapping and successful introgression of the spring wheat-derived QTL Fhb1 for Fusarium head blight resistance in three European triticale populations

Ollier, Marine; Talle, Vincent; Brisset, Anne-Laure; Bihan, Zoé Le; Duerr, Simon; Lemmens, Marc; Goudemand, Ellen; Robert, Olivier; Hilbert, Jean‐Louis; Buerstmayr, Hermann

doi:10.1007/s00122-019-03476-0

Cited by 28 publications

(28 citation statements)

References 130 publications

(165 reference statements)

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“…In this study the broad-sense heritability estimates (H 2 ) https://doi.org/10.1371/journal.pone.0248184.g002 for agronomic traits, such as plant height and flowering time, were high whilst those for FHB associated traits (visual severity, DON accumulation) were more moderate. These broad-sense heritability estimates for both types of traits are comparable with H 2 values previously reported in the literature [38,39]. In the present study, a single FHB QTL per population was stable across environments.…”

Section: Discussionsupporting

confidence: 92%

Identification of Fusarium head blight resistance loci in two Brazilian wheat mapping populations

et al. 2021

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Fusarium head blight (FHB) is a disease of wheat (Triticum aestivum L.) that causes major yield losses in South America, as well as many other wheat growing regions around the world. FHB results in low quality, contaminated grain due to the production of mycotoxins such as deoxynivalenol (DON). In Brazil, FHB outbreaks are increasing in frequency and are currently controlled by fungicides which are costly and potentially harmful to the wider environment. To identify the genetic basis of resistance to FHB in Brazilian wheat, two mapping populations (Anahuac 75 × BR 18-Terena and BR 18-Terena × BRS 179) segregating for FHB resistance were phenotyped and quantitative trait loci (QTL) analysis was undertaken to identify genomic regions associated with FHB-related traits. A total of 14 QTL associated with FHB visual symptoms were identified, each of which explained 3.7–17.3% of the phenotypic variance. Two of these QTL were stable across environments. This suggests FHB resistance in Anahuac 75, BR 18-Terena and BRS 179 is controlled by multiple genetic loci that confer relatively minor differences in resistance. A major, novel QTL associated with DON accumulation was also identified on chromosome 4B (17.8% of the phenotypic variance), as well as a major QTL associated with thousand-grain weight on chromosome 6B (16.8% phenotypic variance). These QTL could be useful breeding targets, when pyramided with major sources of resistance such as Fhb1, to improve grain quality and reduce the reliance on fungicides in Brazil and other countries affected by FHB.

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Section: Discussionsupporting

confidence: 92%

Identification of Fusarium head blight resistance loci in two Brazilian wheat mapping populations

et al. 2021

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“…In future, the development of high-throughput automatic germination scoring methods (Joosen et al 2010) could make germination analyses more costefficient and widely used for FHB resistance as well. Digital image analysis has shown promise also as an alternative to visual scorings of FHB severity in triticale (Ollier et al 2020).…”

Section: Don and Germination Capacitymentioning

confidence: 99%

Resistance to Fusarium head blight in oats based on analyses of multiple field and greenhouse studies

et al. 2020

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Fusarium head blight (FHB) and the mycotoxins produced by its causal agents in oats (Avena sativa L.) have become a growing problem in northern countries over the last decades. The development of resistant cultivars would offer a highly needed and economical solution to the problem. To tackle the high genotype×environment interaction of FHB, a combined analysis was carried out on eight greenhouse and 13 field experiments inoculated with DON-producing Fusarium species. Our data included 406 oat genotypes consisting of Nordic cultivars, breeding lines and potentially resistant gene bank accessions. High variation in the DON accumulation estimates in the material shows that the selection of genotypes with better resistance would be valuable. The greenhouse and field studies resulted in significantly different oat genotype susceptibility rankings for both DON and Fusarium infected kernels. The results obtained from the field experiments have more practical relevance for farmers and breeders for the identification of DON resistant cultivars than greenhouse screenings. Days to maturity and the plant height of the genotypes both significantly affected the Fusarium infections and DON in the field. The relationship between Fusarium infected kernels, DONand germination capacity provide an insight into the composition of genotypes with resistance. The core set of 30 oat genotypes, which were phenotyped in several experiments, provides valuable examples of both highly susceptible and moderately resistant oat genotypes.

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“…Reliable assessment of FHB resistance has to be associated with the evaluation of kernel damage and the amount of toxins accumulated in the grain. Ollier et al [50] showed that in triticale, FHB severity symptoms on grain measured digitally as "whitened kernel surface" [51] had higher heritability coefficients than FHB symptoms on heads. This variable highly correlated with the mycotoxin content.…”

Section: Discussionmentioning

confidence: 99%

“…Recently, an attempt was made to introduce FHB resistance from the spring wheat line "CM-82036" into the triticale varieties [50,55]. The Fhb1 gene was detected and validated in triticale background.…”

Section: Discussionmentioning

confidence: 99%

Resistance to Fusarium Head Blight, Kernel Damage and Concentration of Fusarium Mycotoxins in Grain of Winter Triticale (x Triticosecale Wittmack) Lines

Góral¹,

Wiśniewska²,

Ochodzki³

et al. 2020

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Fusarium head blight (FHB) can cause contamination of cereal grain with mycotoxins. Triticale is also infected with FHB; however, it is more resistant than wheat to head infection. The aim of this study was to identify triticale lines that combine low head infection with low toxin contamination. Resistance to FHB of 15 winter triticale and three winter wheat lines was evaluated over a three-year experiment established in two locations. At the anthesis stage, heads were inoculated with Fusarium culmorum isolates. The FHB index was scored and the percentage of Fusarium-damaged kernels (FDKs) assessed. The grain was analysed for type B trichothecenes (deoxynivalenol and derivatives, nivalenol) and zearalenone content. The average FHB index was 10.7%. The proportion of FDK was 18.1% (weight) and 21.6% (number). An average content of deoxynivalenol for wheat amounted to 7.258 mg/kg and nivalenol to 5.267 mg/kg. In total, it was 12.788 m/kg of type B trichothecenes. The zearalenone content in the grain was 0.805 mg/kg. Relationships between FHB index, FDK and mycotoxin contents were statistically significant for triticale lines; however, they were stronger for FDK versus mycotoxins. Lines combing all types of FHB resistance were found, and two of them had resistance similar to that of wheat lines with the Fhb1 gene.

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QTL mapping and successful introgression of the spring wheat-derived QTL Fhb1 for Fusarium head blight resistance in three European triticale populations

Cited by 28 publications

References 130 publications

Identification of Fusarium head blight resistance loci in two Brazilian wheat mapping populations

Identification of Fusarium head blight resistance loci in two Brazilian wheat mapping populations

Resistance to Fusarium head blight in oats based on analyses of multiple field and greenhouse studies

Resistance to Fusarium Head Blight, Kernel Damage and Concentration of Fusarium Mycotoxins in Grain of Winter Triticale (x Triticosecale Wittmack) Lines

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