Registration of Two Double Rust Resistant Germplasms, HA‐R12 and HA‐R13 for Confection Sunflower

J., G.; Seiler, Gerald J.; Markell, Samuel G.; Gulya, T. J.; Qi, Lili

doi:10.3198/jpr2015.05.0033crg

Cited by 6 publications

(3 citation statements)

References 17 publications

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“…Rust incited by biotrophic fungus Puccinia helianthi Schw. is one of the most serious diseases of sunflower and is causing substantial yield and quality losses in many sunflower production countries of the world 45 . Resistance to rust in sunflower is often governed by single dominant genes.…”

Section: Introductionmentioning

confidence: 99%

Map and sequence-based chromosome walking towards cloning of the male fertility restoration gene Rf5 linked to R11 in sunflower

Long

Song

et al. 2021

Sci Rep

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The nuclear fertility restorer gene Rf5 in HA-R9, originating from the wild sunflower species Helianthus annuus, is able to restore the widely used PET1 cytoplasmic male sterility in sunflowers. Previous mapping placed Rf5 at an interval of 5.8 cM on sunflower chromosome 13, distal to a rust resistance gene R11 at a 1.6 cM genetic distance in an SSR map. In the present study, publicly available SNP markers were further mapped around Rf5 and R11 using 192 F2 individuals, reducing the Rf5 interval from 5.8 to 0.8 cM. Additional SNP markers were developed in the target region of the two genes from the whole-genome resequencing of HA-R9, a donor line carrying Rf5 and R11. Fine mapping using 3517 F3 individuals placed Rf5 at a 0.00071 cM interval and the gene co-segregated with SNP marker S13_216392091. Similarly, fine mapping performed using 8795 F3 individuals mapped R11 at an interval of 0.00210 cM, co-segregating with two SNP markers, S13_225290789 and C13_181790141. Sequence analysis identified Rf5 as a pentatricopeptide repeat-encoding gene. The high-density map and diagnostic SNP markers developed in this study will accelerate the use of Rf5 and R11 in sunflower breeding.

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Section: Introductionmentioning

confidence: 99%

Map and sequence-based chromosome walking towards cloning of the male fertility restoration gene Rf5 linked to R11 in sunflower

Long

Song

et al. 2021

Sci Rep

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“…HA-R13 contains R 5 from HA-R2 and R 13a from HA-R6. Both HA-12 and HA-13 showed high levels of resistance to rust races 336 and 777 (Ma et al, 2016). Sunflower confection lines HA-DM2 (carrying the genes R 12 and Pl ARG ) and HA-DM3 (carrying the genes R 13a and Pl 17 ) carry rust resistance and downy mildew genes and were developed through pedigree and marker assisted selection (Ma et al, 2019).…”

Section: Rust (Puccinia Helianthi)mentioning

confidence: 99%

Validated markers for sunflower (Helianthus annuusL.) breeding

Rauf

Warburton

Naeem

et al. 2020

OCL

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Sunflower is native to North America and is now grown around the world for edible oil, seed roasting, confectionary products and bird food. Genetic diversity in cultivated and wild germplasm is characterized for use with various breeding objectives. Molecular markers have been developed to facilitate sunflower breeding. This review was undertaken to discuss molecular markers, which have been validated in different genetic backgrounds for traits of economic interest in sunflower. Markers found to be linked to monogenic traits in mapping populations may be used to select plants with those traits; review of the literature identified markers available for several monogenic traits including resistance against pests and pathogens. Markers linked to Quantitative Trait Loci (QTL) for many disease resistance and economically important traits that have also been identified in specific populations and target environments are also reported here. These identified linked markers should be validated in different genetic backgrounds and environments to ensure widespread utility. Publicly available inbred lines carrying traits of interest and validated markers related to them are summarized in this review, which also highlights traits for which these resources are still lacking, possibly due to lack of funding despite the importance of this hybrid crop. Genomic sequence data is now available for sunflower, which must now be exploited to develop new SNP based markers linked to genes of interest to mine allelic diversity related to economically important traits, especially traits well studied in other organisms, such as seed oil content and resistance genes.

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“…The most sustainable means for disease control is the use of genetic resistance. To make this feasible in crop breeding, new resistance resources need to be identified and pyramided avoiding the large-scale use of single race-specific gene(s), which results in the breakdown of resistance (Ma et al, 2016(Ma et al, , 2019aQi & Ma, 2020).…”

Section: Introductionmentioning

confidence: 99%

Registration of HA‐R20 and HA‐R21 confection sunflower germplasms resistant to rust and downy mildew

Ma,

Li,

Seiler

et al. 2023

J of Plant Registrations

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Rust and downy mildew (DM) are detrimental diseases in global sunflower (Helianthus annuus L.) production. Disease often results in yield loss and reduced seed quality. Host resistance to DM and rust is mediated by single dominant genes in sunflower. To better utilize genetic resistance, gene pyramiding is a common practice in crop breeding to extend the durability and longevity of resistance. Two confection sunflower germplasm lines, HA‐R20 (Reg. no. GP‐387, PI 702361) and HA‐R21 (Reg. no. GP‐388, PI 702362), were developed using the pedigree breeding method and DNA marker‐assisted selection and released by the USDA‐ARS Sunflower and Plant Biology Research Unit in collaboration with the North Dakota Agricultural Experiment Station in September 2022. HA‐R20 is an F3‐derived F4 confection restorer selection from the cross of HA‐DM2 and HA‐R8, carrying rust resistance genes R12 and R15 and DM resistance gene PlArg. HA‐R21 is an F3‐derived F4 confection maintainer selection from the cross of HA‐DM3 and HA‐R8, carrying rust resistance genes R13a and R15 and DM resistance gene Pl17. Disease reaction and marker testing for DM and rust confirmed that both germplasms harbor DM and rust R genes in the homozygous condition and are resistant to all DM and rust races identified in North America to date. These multiple disease‐resistant lines will provide the sunflower industry with durable disease‐resistant sources for the continued improvement of the crop.

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Registration of Two Double Rust Resistant Germplasms, HA‐R12 and HA‐R13 for Confection Sunflower

Cited by 6 publications

References 17 publications

Map and sequence-based chromosome walking towards cloning of the male fertility restoration gene Rf5 linked to R11 in sunflower

Map and sequence-based chromosome walking towards cloning of the male fertility restoration gene Rf5 linked to R11 in sunflower

Validated markers for sunflower (Helianthus annuusL.) breeding

Registration of HA‐R20 and HA‐R21 confection sunflower germplasms resistant to rust and downy mildew

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