Molecular breeding of wheat lines for multiple rust and Fusarium head blight resistance

Maré, Ansori; Boshoff, W. H. P.; Herselman, L.

doi:10.1007/s10681-020-02697-5

Cited by 8 publications

(5 citation statements)

References 53 publications

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“…Breeding and planting wheat cultivars with stable resistance to FHB and toxin accumulation is considered to be the most cost-effective and environmentally friendly strategy to reduce the risk of yield losses and contamination with mycotoxins ( Bertuzzi et al, 2020 ; Maré et al, 2020 ). Different resistance mechanisms to FHB have been described in wheat ( Mesterházy et al, 1995 ; Mesterházy, 2020 ).…”

Section: Introductionmentioning

confidence: 99%

Evaluation of Fusarium Head Blight Resistance in 410 Chinese Wheat Cultivars Selected for Their Climate Conditions and Ecological Niche Using Natural Infection Across Three Distinct Experimental Sites

et al. 2022

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Exploiting wheat cultivars with stable resistance to Fusarium Head blight (FHB) and toxin accumulation is a cost-effective and environmentally friendly strategy to reduce the risk of yield losses and contamination with mycotoxins. To facilitate the deployment of stable cultivar resistance, we evaluated FHB resistance and resistance to mycotoxin accumulation in 410 wheat lines bred by local breeders from four major wheat growing regions in China after natural infection at three distinct locations (Hefei, Yangzhou and Nanping). Significant differences in disease index were observed among the three locations. The disease indexes (DI’s) in Nanping were the highest, followed by Yangzhou and Hefei. The distribution of DI’s in Yangzhou showed the best discrimination of FHB resistance in cultivars. Growing region and cultivar had significant effect on DI and mycotoxins. Among the climate factors, relative humidity and rainfall were the key factors resulting in the severe disease. Even though most cultivars were still susceptible to FHB under the strongly conducive conditions applied, the ratio of resistant lines increased in the Upper region of the Yangtze River (UYR) and the Middle and Lower Region of the Yangtze River (MLYR) between 2015 and 2019. Deoxynivalenol (DON) was the dominant mycotoxin found in Hefei and Yangzhou, while NIV was predominant in Nanping. Disease indexes were significantly correlated with DON content in wheat grain.

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Section: Introductionmentioning

confidence: 99%

Evaluation of Fusarium Head Blight Resistance in 410 Chinese Wheat Cultivars Selected for Their Climate Conditions and Ecological Niche Using Natural Infection Across Three Distinct Experimental Sites

et al. 2022

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“…Gene-based and closely linked molecular markers (SNP, STS and CAPS) were used to validate the presence of resistance alleles of the genes Lr34, Lr46, Lr67, Lr68, and Sr2 [72]. [73] studied the molecular breeding of wheat lines for resistance against multiple rusts and Fusarium head blight (FHB), reporting durable resistance against both the rusts and FHB by combining the six resistance genes Lr19, Lr34/Yr18/Sr57/Pm38/Ltn1, Sr2/Yr30, Sr26, Sr39, and Fhb1.…”

Section: Discussionmentioning

confidence: 99%

Phenotyping and validation of molecular markers associated with rust resistance genes in wheat cultivars in Egypt

El-Shafei¹,

El-Orabey

Fathallah³

et al. 2021

Mol Biol Rep

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Thirteen Egyptian wheat cultivars were evaluated and characterized for adult plant resistance (APR) to yellow, leaf, and stem rusts. Markers linked to yellow, leaf and stem rust resistance genes were validated and subsequently used to identify wheat cultivars containing more than one rust resistance gene. Results of the molecular marker detection indicated that several genes, either alone or in different combinations, were present among the wheat cultivars, including Yr, Yr78 (stripe rust), Lr, Lr70 (leaf rust), Sr. Sr33, SrTA10187, Sr13, and Sr35 (stem rust), and Lr34/Yr18 and Lr49/Yr29 (leaf/stripe rust). The cultivar Sakha-95 was resistant to leaf and stem rusts, and partially resistant to stripe rust; however, this cultivar contained additional rust resistance genes (Lr, Sr and Lr/Yr). The area under the disease progress curve (AUDPC) type for the various wheat cultivars differed depending on the type of rust infection (yellow, leaf, or stem rust, indicated by Yr, Lr, and Sr). The cultivars Gem-12, Sids-14, Giza-171, and Giza-168 had AUDPC types of partial resistance (PR) and resistance (R). All six cultivars, however, contained additional rust resistance genes.

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“…Plant material consisted of rust and Fusarium head blight (FHB) donor varieties and the offspring (F 2 ) from crosses made to combine complex sources of rust and FHB resistance into a South African wheat background as reported by Maré et al. (2020). In the development of the experimental wheat plants used to test the hypothesis, the rust resistance genes and their respective donor varieties were as follows: Lr19 (derived from CS Lr19 ‐149‐299), Lr34/Yr18/Sr57/Pm38/Ltn1 (Kariega, pedigree SST44//K4500.2/Sapsucker'S'; Smit et al.…”

Section: Methodsmentioning

confidence: 99%

Molecular and phenotypic evaluation of wheat (Triticum aestivum) containing different combinations of rust resistance genes

2021

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Leaf, stem and stripe rust caused by Puccinia triticina, P. graminis f. sp. tritici and P. striiformis f. sp. tritici, respectively, are common wheat diseases. The deployment of complex rust resistance sources is likely to contribute to their durability. In this study, wheat varieties and experimental plants (F2), with different rust resistance gene combinations, were characterised using molecular markers, phenotypic evaluation and quantification of fungal biomass accumulation. The experimental wheat plants were developed from six donor parental varieties that in combination carry seven known rust resistance genes/quantitative trait loci (QTL). A timeline study revealed that quantification of fungal biomass accumulation for the rusts, 10‐day postinoculation (dpi), can successfully distinguish between resistant and susceptible wheat varieties. Phenotypic evaluation included seedling infection types and adult‐plant response types that were determined 15 dpi. Data obtained from the three methods were in support of each other and in combination successfully distinguished between rust‐resistant and susceptible experimental wheat plants. Resistance genes/QTL evaluated in this study, when deployed in combination, may lower the risk of rust outbreaks.

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Molecular breeding of wheat lines for multiple rust and Fusarium head blight resistance

Cited by 8 publications

References 53 publications

Evaluation of Fusarium Head Blight Resistance in 410 Chinese Wheat Cultivars Selected for Their Climate Conditions and Ecological Niche Using Natural Infection Across Three Distinct Experimental Sites

Evaluation of Fusarium Head Blight Resistance in 410 Chinese Wheat Cultivars Selected for Their Climate Conditions and Ecological Niche Using Natural Infection Across Three Distinct Experimental Sites

Phenotyping and validation of molecular markers associated with rust resistance genes in wheat cultivars in Egypt

Molecular and phenotypic evaluation of wheat (Triticum aestivum) containing different combinations of rust resistance genes

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