Comparative analyses of genomic locations and race specificities of loci for quantitative resistance to
            <i>Pyricularia grisea</i>
            in rice and barley

Chen, Huilan; Wang, Shiping; Xing, Yongzhong; Xu, Caiguo; Hayes, Patrick; Zhang, Qifa

doi:10.1073/pnas.0437898100

Cited by 125 publications

(122 citation statements)

References 39 publications

(36 reference statements)

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“…No associations with either smut or scald resistance, or with heading date, maturity and spike density were found by these authors. Three QTLs for pathogen resistance have been mapped in the nud region of barley: one for resistance to Pyrenophora graminea (Pecchioni et al 1996), one for non-host resistance to leaf rust fungi (Puccinia hordei-murini and Puccinia triticina) (Niks et al 2000), and one for non-host resistance to the rice pathogen Pyricularia grisea (Chen et al 2003). These latter associations seem to depend in most cases on genetic linkage rather than on pleiotropy.…”

mentioning

confidence: 99%

Effect of the nud gene on grain yield in barley

Barabaschi¹,

Francia²,

Tondelli³

et al. 2012

CZECH J GENET PLANT

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Naked barleys are less yielding than the hulled ones while the reason for this difference has not been definitely clarified. To investigate the effect of the nud gene on yield, a barley doubled haploid (DH, Proctor × Nudinka) population was initially tested in three environments and a QTL study was run on the entire population as well as on two nud/NUD DH subpopulations. Among the agronomic traits studied, a QTL effect was found at nud locus on chromosome 7H only for yield and thousand grain weight (TGW), while a second QTL was found on 6H, although contributed by the naked parent. Other QTLs for TGW were identified on 2H, 3H and 5H. Most QTLs found in the entire population were confirmed by the study on the two groups. No interaction was observed between QTLs. To provide a more accurate evaluation of the effects of the nud gene upon grain yield, its components and other agronomic traits, sixteen naked advanced backcross (AB) BC5F2 lines in the hulled background of cultivar Arda were prepared and evaluated in a replicated yield trial for two years. The only differences found between AB lines and Arda in grain yield and TGW were due to hull weight (11.97% of kernel weight). No differences were observed in other traits such as grains/m 2 , grains per spike, plant height, heading date and mildew resistance. In conclusion, we think to have clarified that the effect of the nud gene on yield is due to hulls, and we did not find any pleiotropic effect of nud on other traits. This suggests, together with the finding of a QTL contributed by the naked parent, that there is a great potential to improve naked barley up to the yield levels of hulled barley.

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confidence: 99%

Effect of the nud gene on grain yield in barley

Barabaschi¹,

Francia²,

Tondelli³

et al. 2012

CZECH J GENET PLANT

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“…However, no major disease Rgenes have previously been located on chromosome 3, only some insect R-genes, such as bph11 and Grh4 5,8 . Only quantitative trait loci for bacterial leaf streak, rice blast, and sheath blight resistance genes were known on chromosome 3 2,23,29 . Our results provide the first report of the location of a major resistance gene for BB on chromosome 3.…”

Section: Discussionmentioning

confidence: 99%

Mapping of Bacterial Blight Resistance Gene Xa11 on Rice Chromosome 3

Goto

Matsumoto

Furuya

et al. 2009

JARQ

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The bacterial blight (BB) resistance gene Xa11 confers resistance in rice to Japanese races IB, II, IIIA, and V of the BB pathogen Xanthomonas oryzae pv. oryzae (Xoo). Here, we report the mapping of Xa11 by using randomly amplified polymorphic DNA (RAPD), cleaved amplified polymorphic sequence (CAPS), and simple sequence repeat (SSR) markers. To detect DNA markers linked to Xa11, we used an Xa11 near-isogenic line, IR-BB11 (in genetic background of IR24), and the susceptible cultivar IR24. The RAPD fragment L19 1200 , putatively linked to Xa11, was identified. Cloning and sequencing of the L19 1200 product indicated that it was held in the Rice Genome Program database as accession number AC097277, and that it occurs on chromosome 3. On the basis of the sequences of L19 1200 and the flanking genomic region, we designed CAPS marker KUX11 and selected two SSR markers, RM347 and RM1350, for mapping Xa11. To confirm the putative linkage among Xa11 and the three markers, we conducted linkage analysis using the F 2 population of a cross between IR24 and IR-BB11. Each F 2 plant was inoculated with strain T7156 (race IB) and genotyped with KUX11, RM347, and RM1350. Segregation in the F 2 located Xa11 between the loci of RM347 (2.0 cM) and KUX11 (1.0 cM) on the long arm of chromosome 3. These results should be useful for the markerassisted selection of Xa11 in breeding programs and for cloning Xa11 by map-based cloning. Discipline: Plant BreedingAdditional key words: cleaved amplified polymorphic sequence (CAPS), linkage, randomly amplified polymorphic DNA (RAPD), simple sequence repeat (SSR), Xanthomonas oryzae

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“…The accessibility of the sequences of the candidate genes that underlie agronomic traits may help the practical genebased use of genetic resources (Graner, 2006). The evaluation of genes/QTL conferring the level of resistance to rice blast pathogen has showed high similarity between rice and barley regarding sequence and position, showing one common evolutionary origin for this resistance gene (Chen et al, 2003). Allele mining of the blast resistance gene Pi-ta showed 91 nucleotide polymorphisms and 18 InDel variations among wild rice accessions of O. rufipogon and O. barthii (Huang et al, 2008).…”

Section: Applications Of Allele Miningmentioning

confidence: 99%

Allele Mining Strategies: Principles and Utilisation for Blast Resistance Genes in Rice (Oryza sativaL.)

Ashkani

Yusop²,

Shabanimofrad³

et al. 2015

Current Issues in Molecular Biology

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Allele mining is a promising way to dissect naturally occurring allelic variants of candidate genes with essential agronomic qualities. With the identification, isolation and characterisation of blast resistance genes in rice, it is now possible to dissect the actual allelic variants of these genes within an array of rice cultivars via allele mining. Multiple alleles from the complex locus serve as a reservoir of variation to generate functional genes. The routine sequence exchange is one of the main mechanisms of R gene evolution and development. Allele mining for resistance genes can be an important method to identify additional resistance alleles and new haplotypes along with the development of allele-specific markers for use in marker-assisted selection. Allele mining can be visualised as a vital link between effective utilisation of genetic and genomic resources in genomics-driven modern plant breeding. This review studies the actual concepts and potential of mining approaches for the discovery of alleles and their utilisation for blast resistance genes in rice. The details provided here will be important to provide the rice breeder with a worthwhile introduction to allele mining and its methodology for breakthrough discovery of fresh alleles hidden in hereditary diversity, which is vital for crop improvement.

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Comparative analyses of genomic locations and race specificities of loci for quantitative resistance to Pyricularia grisea in rice and barley

Cited by 125 publications

References 39 publications

Effect of the nud gene on grain yield in barley

Effect of the nud gene on grain yield in barley

Mapping of Bacterial Blight Resistance Gene Xa11 on Rice Chromosome 3

Allele Mining Strategies: Principles and Utilisation for Blast Resistance Genes in Rice (Oryza sativaL.)

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