Meta‐Analysis of QTL Associated with Fusarium Head Blight Resistance in Wheat

Liu, Shuyu; Hall, M. D.; Griffey, Carl A.; McKendry, Anne L.

doi:10.2135/cropsci2009.03.0115

Cited by 199 publications

(209 citation statements)

References 73 publications

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“…Numerous quantitative trait loci (QTL) have been identified for bread wheat distributed over all 21 wheat chromosomes. However, only a handful of QTL has been validated across studies and is successfully employed in breeding programs worldwide (Buerstmayr et al 2009;Liu et al 2009;Löffler et al 2009). Among these, the strongest and best-validated resistance QTL were identified in Chinese germplasm: Fhb1, Fhb2, and Qfhs.ifa-5A, all derived from 'Sumai-3' (Waldron et al 1999;Bai et al 1999;Anderson et al 2001;Buerstmayr et al 2002;2003a, b).…”

Section: Resistance Sources and Qtlmentioning

confidence: 99%

Breeding strategies and advances in line selection for Fusarium head blight resistance in wheat

Steiner

Buerstmayr

Michel

et al. 2017

Trop. plant pathol.

154

155

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Fusarium head blight (FHB) is a fungal disease of worldwide importance to small grain cereals that may lead to severe losses in both yield and quality. The development of resistant varieties is the most effective approach for managing the disease. Genetic variation for FHB resistance is large, including 'exotic' and 'native' wheat germplasm. Methods for selecting improved lines include: 1) phenotypic selection with direct symptom evaluation; 2) marker-assisted selection for well-characterized QTL and 3) genomic selection employing genome-wide prediction models. Breeding programs need to find the optimal deployment of the complementary approaches according to their available facilities, resources and requirements. This review aims to summarize recent advances in FHB resistance breeding, thereby discussing the importance of morphological traits like the extent of retained anthers after flowering, its suitability for indirect selection and the pronounced association of the semi-dwarfing allele Rht-D1b with increased anther retention and FHB severity. Markerassisted selection is successfully applied to select for largeeffect QTL, especially for the most prominent resistance QTL Fhb1 in bread wheat, as well as in durum wheat as recently demonstrated. The resistance locus Fhb1 has been partly elucidated, a pore-forming toxin-like gene confers resistance against fungal spread. Genomic selection for FHB resistance appears promising especially for breeding programs deploying 'native' resistance sources with many small-effect QTL.

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Section: Resistance Sources and Qtlmentioning

confidence: 99%

Breeding strategies and advances in line selection for Fusarium head blight resistance in wheat

Steiner

Buerstmayr

Michel

et al. 2017

Trop. plant pathol.

154

155

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“…Several quantitative trait loci (QTLs) are associated with type I resistance in recombinant inbred lines (RILs) and doubled haploid lines (DHLs) (Chen et al 2006, Gilsinger et al 2005, Lin et al 2006, Steed et al 2005, Steiner et al 2004, Yang et al 2005, Yu et al 2008; reviewed by Buerstmayr et al 2009, Liu et al 2009. Since this type of resistance is more difficult to assess, less is known about it than other types (Buerstmayr et al 2009); for example, the mechanism of type I resistance is not clear (Wagacha and Muthomi 2007).…”

Section: Introductionmentioning

confidence: 99%

Effect of cleistogamy on Fusarium head blight resistance in wheat

et al. 2010

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In wheat (Triticum aestivum L.), Fusarium head blight (FHB) resistance is an important breeding target to reduce yield losses and mycotoxin contamination. We hypothesized that cleistogamous (CL, closed flowering) cultivars have a lower risk of FHB infection than chasmogamous (CH, opened flowering) cultivars because FHB infection usually occurs in the inside of florets or extracted anthers and FHB resistance in CL cultivars decreases mycotoxin accumulation. To test these hypotheses, we produced 126 recombinant inbred lines (RILs) derived from a cross between common wheat varieties 'U24' (CL variety) and 'Saikai 165' (CH variety). Although 'U24' and 'Saikai 165' are both resistant to FHB infection, 'U24' is susceptible to FHB spread, grain deterioration, and mycotoxin accumulation compared with 'Saikai 165'. Among the RILs, there were significant differences in all of the tested traits. Although the CL RILs showed less initial FHB infection than CH RILs, there were no significant differences in grain deterioration and mycotoxin accumulation between the 2 groups. An FHB-resistant quantitative trait locus (QTL) located on chromosome 3BS increased resistance to FHB spread, grain deterioration, and mycotoxin accumulation; however, not all CL RILs with this QTL accumulated less mycotoxin than 'Saikai 165'.

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“…Consequently, researchers in Japan have been working on breeding FHB-resistant wheat strains since the 1960s 5,17,33,34 , alongside many other countries 29,30,41 . Recently, there have been several reviews on the genetic improvement of FHB resistance in wheat 3,9,18,24,25,30,31,36,38 . However, since there is no known source of complete FHB resistance and almost all sources exhibit only partial resistance, continued efforts to increase FHB resistance are required to safeguard stable wheat production and food security.…”

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confidence: 99%