Pm223899, a new recessive powdery mildew resistance gene identified in Afghanistan landrace PI 223899

Li, Genqiao; Carver, Brett F.; Cowger, Christina; Bai, Guihua; Xu, Xiangyang

doi:10.1007/s00122-018-3199-y

Cited by 18 publications

(8 citation statements)

References 38 publications

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“…In fact, all the cloned PM resistance genes in wheat encode NBS-LRR proteins [18][19][20][21][22][23][24][25][26][27][28][29][30]. QPm.mgb-1AS was mapped to the genomic region where reside the well-known PM resistance gene Pm3 [49] and the QTL QPm.caas-1AS [50], QPm.osu-1A [51] and Pm223899 [52]. The coincidence of QPm.mgb-1AS with Pm3 was excluded as the QTL-tagging SNP IWB71713 (intron variant), located inside the Pm3 sequence, is physically located at 5,209,229-5,213,669 bp of the Svevo reference genome [48], and resides at 4.6 cM on the durum consensus map [42], while our candidate gene TRITD1Av1G004560 is physically located at 9,960,116-9,964,051 bp and mapped at 10.8 cM in the durum consensus map [42].…”

Section: Candidate Genes For Pm Resistancementioning

confidence: 99%

Mapping Powdery Mildew (Blumeria graminis f. sp. tritici) Resistance in Wild and Cultivated Tetraploid Wheats

Simeone

Piarulli

Nigro

et al. 2020

IJMS

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Wheat is the most widely grown crop and represents the staple food for one third of the world’s population. Wheat is attacked by a large variety of pathogens and the use of resistant cultivars is an effective and environmentally safe strategy for controlling diseases and eliminating the use of fungicides. In this study, a collection of wild and cultivated tetraploid wheats (Triticum turgidum) were evaluated for seedling resistance (SR) and adult plant resistance (APR) to powdery mildew (Blumeria graminis) and genotyped with a 90K single nucleotide polymorphism (SNP) array to identify new sources of resistance genes. The genome-wide association mapping detected 18 quantitative trait loci (QTL) for APR and 8 QTL for SR, four of which were identical or at least closely linked to four QTL for APR. Thirteen candidate genes, containing nucleotide binding sites and leucine-rich repeats, were localized in the confidence intervals of the QTL-tagging SNPs. The marker IWB6155, associated to QPm.mgb-1AS, was located within the gene TRITD1Av1G004560 coding for a disease resistance protein. While most of the identified QTL were described previously, five QTL for APR (QPm.mgb-1AS, QPm.mgb-2BS, QPm.mgb-3BL.1, QPm.mgb-4BL, QPm.mgb-7BS.1) and three QTL for SR (QPm.mgb-3BL.3, QPm.mgb-5AL.2, QPm.mgb-7BS.2) were mapped on chromosome regions where no resistance gene was reported before. The novel QTL/genes can contribute to enriching the resistance sources available to breeders.

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Section: Candidate Genes For Pm Resistancementioning

confidence: 99%

Mapping Powdery Mildew (Blumeria graminis f. sp. tritici) Resistance in Wild and Cultivated Tetraploid Wheats

Simeone

Piarulli

Nigro

et al. 2020

IJMS

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“…The infection not only adversely impacts quality parameters, due to altered composition of the grain content and depletion of carbohydrate reserves, but also yield components such as thousand kernel weight (Gao et al 2018). Currently, more than 100 PM resistance alleles are described in the literature, distributed over almost all 21 wheat chromosomes (Buerstmayr et al 2016; Li et al 2018). In addition, genetic studies have identified at least 119 quantitative trait loci (QTL) associated with adult plant resistance to PM (Li et al 2014).…”

mentioning

confidence: 99%

Genetic Dissection of Resistance to the Three Fungal Plant PathogensBlumeria graminis,Zymoseptoria tritici, andPyrenophora tritici-repentisUsing a Multiparental Winter Wheat Population

Stadlmeier

Jørgensen

Corsi

et al. 2019

G3 Genes|Genomes|Genetics

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Bread wheat ( Triticum aestivum L.) is one of the world’s most important crop species. The development of new varieties resistant to multiple pathogens is an ongoing task in wheat breeding, especially in times of increasing demand for sustainable agricultural practices. Despite this, little is known about the relations between various fungal disease resistances at the genetic level, and the possible consequences for wheat breeding strategies. As a first step to fill this gap, we analyzed the genetic relations of resistance to the three fungal diseases – powdery mildew (PM), septoria tritici blotch (STB), and tan spot (TS) – using a winter wheat multiparent advanced generation intercross population. Six, seven, and nine QTL for resistance to PM, STB, and TS, respectively, were genetically mapped. Additionally, 15 QTL were identified for the three agro-morphological traits plant height, ear emergence time, and leaf angle distribution. Our results suggest that resistance to STB and TS on chromosome 2B is conferred by the same genetic region. Furthermore, we identified two genetic regions on chromosome 1AS and 7AL, which are associated with all three diseases, but not always in a synchronal manner. Based on our results, we conclude that parallel marker-assisted breeding for resistance to the fungal diseases PM, STB, and TS appears feasible. Knowledge of the genetic co-localization of alleles with contrasting effects for different diseases, such as on chromosome 7AL, allows the trade-offs of selection of these regions to be better understood, and ultimately determined at the genic level.

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“…Bulked-segregant analysis (BSA) is an effective method for identifying DNA markers tightly linked to FW resistance (Giovannoni et al, 1991; Michelmore et al, 1991). For example, Li et al (2018) mapped powdery mildew resistance genes to a region of chromosome 1A of wheat, and Zhang et al (2018) confirmed that resistance to downy mildew and powdery mildew shared common candidate intervals on chromosome 5 of cucumber (Zhang et al, 2018) by BSA. DNA samples from soybean with opposite phenotypes were subjected to BSA to detect DNA markers that exhibited differences between the two different samples to identify the QTL (Mansur et al, 1993).…”

Section: Introductionmentioning

confidence: 87%

Inheritance and Quantitative Trait Locus Mapping of Fusarium Wilt Resistance in Cucumber

Dong

et al. 2019

Front. Plant Sci.

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Fusarium wilt (FW) is a very serious soil-borne disease worldwide, which usually results in huge yield losses in cucumber production. However, the inheritance and molecular mechanism of the response to FW are still unknown in cucumber (Cucumis sativus L.). In this study, two inbred cucumber lines Superina (P1) and Rijiecheng (P2) were used as the sensitive and resistant lines, respectively. A mixed major gene plus polygene inheritance model was used to analyze the resistance to FW in different generations of cucumber, namely, P1, P2, F1 (P1×P2), B1, and B2, obtained by backcrossing F1 plants with Superina (B1) or Rijiecheng (B2), and F2, obtained by self-crossing the F1 plants. After screening 18 genetic models, we chose the E-1 model, which included two pairs of additive-dominance-epistatic major genes and additive-dominance polygenes, as the optimal model for resistance to FW on the basis of fitness tests. The major effect quantitative trait locus (QTL) fw2.1 was detected in a 1.91-Mb-long region of chromosome 2 by bulked-segregant analysis. We used five insertion/deletion markers to fine-map the fw2.1 to a 0.60 Mb interval from 1,248,093 to 1,817,308 bp on chromosome 2 that contained 80 candidate genes. We also used the transcriptome data of Rijiecheng inoculated with Fusarium oxysporum f. sp. cucumerinum (Foc) to screen the candidate genes. Twelve differentially expressed genes were detected in fw2.1, and five of them were significantly induced by FW. The expression levels of the five genes were higher in FW-resistant Rijiecheng inoculated with Foc than in the control inoculated with water. Our results will contribute to a better understanding of the genetic basis of FW resistance in cucumber, which may help in breeding FW-resistant cucumber lines in the future.

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Pm223899, a new recessive powdery mildew resistance gene identified in Afghanistan landrace PI 223899

Abstract: Key message A new recessive powdery mildew resistance gene, Pm223899, was identified in Afghanistan wheat landrace PI 223899 and mapped to an interval of about 831 Kb in the terminal region of the short arm of chromosome 1A.

Cited by 18 publications

References 38 publications

Mapping Powdery Mildew (Blumeria graminis f. sp. tritici) Resistance in Wild and Cultivated Tetraploid Wheats

Mapping Powdery Mildew (Blumeria graminis f. sp. tritici) Resistance in Wild and Cultivated Tetraploid Wheats

Genetic Dissection of Resistance to the Three Fungal Plant PathogensBlumeria graminis,Zymoseptoria tritici, andPyrenophora tritici-repentisUsing a Multiparental Winter Wheat Population

Inheritance and Quantitative Trait Locus Mapping of Fusarium Wilt Resistance in Cucumber

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