Advanced backcross QTL mapping of resistance to Fusarium head blight and plant morphological traits in a Triticum macha × T. aestivum population

Buerstmayr, Maria; Lemmens, Marc; Steiner, Barbara; Buerstmayr, Hermann

doi:10.1007/s00122-011-1584-x

Cited by 77 publications

(70 citation statements)

References 57 publications

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“…The literature suggests that taller genotypes could maintain a cooler canopy in environments with increased temperatures [46]. A correlation between increased plant height and reduced FHB is reported in numerous studies [47][48][49]. In one study, the investigators showed that plants with Rht-B1b and Rht_D1b significantly decreased resistance to initial infection (Type 1) and Rht_B1b increased resistance to spread of the fungus [42].…”

Section: Discussionmentioning

confidence: 99%

GWAS for Fusarium Head Blight Related Traits in Winter Wheat (Triticum Aestivum L.) in an Artificially Warmed Treatment

Tessmann

Sanford

2018

Agronomy

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Global temperature increases will affect Fusarium head blight (FHB) levels in wheat (Triticum aestivum L.). A pressing question is whether current sources of resistance will be effective in a warmer environment. We evaluated phenotypic response to disease in 238 soft winter wheat breeding lines and cultivars grown in 2015-2016 and 2016-2017 under control and warmed (+3 • C) conditions. Warming was achieved with heating cables buried 3 cm in the rhizosphere. We measured heading date, plant height, yield, FHB rating, Fusarium damaged kernels (FDK), deoxynivalenol (DON), leaf blotch rating, powdery mildew rating and leaf rust rating. There were significant (p < 0.01) differences among genotypes for all traits measured. Genome-wide association study (GWAS) identified 19 and 10 significant SNPs in the control and warmed treatments, respectively. FDK and DON levels were often significantly (p < 0.05) higher in warmed than in control when we contrasted alleles at important quantitative trait locus (QTL) such as Fhb1, Rht-B1 and D1 and all vernalization and photoperiod loci. Increased rhizosphere temperature resulted in a significantly (p < 0.01) earlier heading date (~3.5 days) both years of the study. Rank correlation between warmed and control treatments was moderate (r = 0.56). Though encouraging, it indicates that selection for performance under warming should be carried out in a warmed environment.

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Section: Discussionmentioning

confidence: 99%

GWAS for Fusarium Head Blight Related Traits in Winter Wheat (Triticum Aestivum L.) in an Artificially Warmed Treatment

Tessmann

Sanford

2018

Agronomy

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“…In tomato, ILs were useful in fine mapping of QTLs for fruit mass [2]. Likewise, ILs were developed and used in QTL mapping for fusarium head blight resistance in wheat [3], mineral accumulation in beans [4], yield attributes in soybean [5], and nematode and fusarium wilt disease resistance in cotton [6]. In rice, several introgression line populations were developed to transfer and map QTLs for agronomic and domestication traits [7–8], yield and morphological traits [9–11], Zn and Fe content in grain [12], and photosynthesis parameters [13].…”

Section: Introductionmentioning

confidence: 99%

Identification and validation of QTLs for seedling salinity tolerance in introgression lines of a salt tolerant rice landrace ‘Pokkali’

2017

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Salinity is a major threat to rice production worldwide. Several studies have been conducted to elucidate the molecular basis of salinity tolerance in rice. However, the genetic information such as quantitative trait loci (QTLs) and molecular markers, emanating from these studies, were rarely exploited for marker-assisted breeding. To better understand salinity tolerance and to validate previously reported QTLs at seedling stage, a set of introgression lines (ILs) of a salt tolerant donor line ‘Pokkali’ developed in a susceptible high yielding rice cultivar ‘Bengal’ background was evaluated for several morphological and physiological traits under salt stress. Both SSR and genotyping-by-sequencing (GBS) derived SNP markers were utilized to characterize the ILs and identify QTLs for traits related to salinity tolerance. A total of eighteen and thirty-two QTLs were detected using SSR and SNP markers, respectively. At least fourteen QTLs detected in the RIL population developed from the same cross were validated in IL population. Analysis of phenotypic responses, genomic composition, and QTLs present in the tolerant ILs suggested that the mechanisms of tolerance could be Na+ dilution in leaves, vacuolar Na+ compartmentation, and possibly synthesis of compatible solutes. Our results emphasize the use of salt injury score (SIS) QTLs in marker-assisted breeding to improve salinity tolerance. The tolerant lines identified in this study will serve as improved breeding materials for transferring salinity tolerance without the undesirable traits of Pokkali. Additionally, the lines will be useful for fine mapping and map-based cloning of genes responsible for salinity tolerance.

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“…Significant associations were observed between the five QTLs for FHB resistance. Buerstmayr et al (2011) introduced a resistant wheat cultivar by the hybridization of T. macha and T. aestivum and applied various types of RFLP markers to the population for polymorphism of plant morphological traits. Liu et al (2009) conducted a meta-analysis study with 245 QTLs for resistance to Fusarium head blight.…”

Section: Marker-assisted Breedingmentioning

confidence: 99%

Wheat resistance to Fusarium head blight and possibilities of its improvement using molecular marker-assisted selection

Shah¹,

Ali²,

Zhu³

et al. 2017

Czech J. Genet. Plant Breed.

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Shah L., Ali A., Zhu Y., Wang S., Si H., Ma C. (2017): Wheat resistance to Fusarium head blight and possibilities of its improvement using molecular marker-assisted selection. Czech J. Genet. Plant Breed., 53: 47−54.Wheat, one of the world's major crops, is seriously affected by fungal diseases, especially in regions with high moisture and moderately warm temperatures. This paper reviews various molecular and conventional techniques that are used to identify genotypes with resistance alleles associated with Fusarium head blight (FHB) diseases. Quantitative trait loci (QTL) type II, designated as Fhb1, are frequently applied in plant breeding, and the newly recognized genes related to resistance to this fungal disease give extra insights into marker-assisted selection (MAS). Molecular markers are robust tools that may be routinely used in MAS for the mapping of resistance genes in crop breeding. FHB resistance is polygenic, and different resistance genes could be conveyed into a single genotype by MAS, which might ensure greater resistance to FHB disease. In conclusion, different researchers have used various techniques to control FHB resistance, such as MAS, gene pyramiding (through backcross), and molecular markers (association with resistance QTLs or genes).

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Advanced backcross QTL mapping of resistance to Fusarium head blight and plant morphological traits in a Triticum macha × T. aestivum population

Cited by 77 publications

References 57 publications

GWAS for Fusarium Head Blight Related Traits in Winter Wheat (Triticum Aestivum L.) in an Artificially Warmed Treatment

GWAS for Fusarium Head Blight Related Traits in Winter Wheat (Triticum Aestivum L.) in an Artificially Warmed Treatment

Identification and validation of QTLs for seedling salinity tolerance in introgression lines of a salt tolerant rice landrace ‘Pokkali’

Wheat resistance to Fusarium head blight and possibilities of its improvement using molecular marker-assisted selection

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