Sunflower Broomrape (Orobanche cumana Wallr.)

Fernández‐Martínez, José M.; Pérez‐Vich, Begoña; Velasco, Leonardo

doi:10.1016/b978-1-893997-94-3.50011-8

Cited by 27 publications

(33 citation statements)

References 87 publications

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“…The genetic resistance of sunflower to broomrape typically follows a gene‐for‐gene interaction, in which a dominant gene for host resistance interacts with a dominant avirulence gene in the parasite (Rodríguez‐Ojeda et al., 2013). In such interactions, dominant resistance is usually complete (i.e., both the dominant homozygote and heterozygote are fully resistant), thereby resulting in a complete absence of symptoms (Fernández‐Martínez et al., 2015). However, in Orobanche –host parasitization systems, resistance is generally horizontal, rather than vertical (Pérez‐Vich et al., 2013).…”

Section: Discussionmentioning

confidence: 99%

“…is a holoparasitic weed (i.e., a plant not capable of photosynthesis and sustaining itself entirely through parasitism) that is widely distributed in sunflower ( Helianthus annuus L.) production areas of the Old World. The species has been reported to occur in most of the sunflower producing regions of Spain and France, around the Black and Caspian Seas, in China, and recently in some parts of Africa (Fernández‐Martínez, Pérez‐Vich, & Velasco, 2015).…”

Section: Introductionmentioning

confidence: 99%

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Characterization of post‐haustorial resistance to sunflower broomrape

Martín-Sanz¹,

Pérez‐Vich

Rueda³

et al. 2020

Crop Science

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The development of durable resistance to broomrape (Orobanche cumana Wallr.) in sunflower (Helianthus annuus L.) requires detailed characterization of the genetic and physiological bases of resistance. The objective of the present study was to map the resistance gene accurately, and to characterize the mechanism of resistance to broomrape observed in a sunflower inbred line (PHSC1102). PHSC1102, which was consistently resistant against race F and race G populations of broomrape, was crossed with PHSC1201, which was susceptible to races F and G. A mapping population of 150 F 2 genotypes was phenotyped by evaluating F 2:3 families for resistance to broomrape races F GV and G TK . The use of single nucleotide polymorphism (SNP) markers mapped the Or SII gene to Linkage Group 4 (LG4) of the sunflower genome. Minirhizotron and histological studies of the resistant line revealed that the attachment of broomrape to host roots was similar in both the resistant and susceptible lines and that the resistance was observed at a late stage (i.e., after tubercle development). Interestingly, the resistance of the PHSC1102 line was associated with the production of phenolic compounds, which were hypothesized to restrict the parasite's growth. This research provides novel and valuable information about the host-parasite interactions between sunflower and broomrape.Abbreviations: DAB, 3,3-diaminobenzidine; LG, linkage group; LOD, logarithm of odds; PBS, phosphate-buffered saline; PCR, polymerase chain reaction; QTL, quantitative trait loci; SNP, single nucleotide polymorphism; TBO, toluidine blue O.

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Section: Discussionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Characterization of post‐haustorial resistance to sunflower broomrape

Martín-Sanz¹,

Pérez‐Vich

Rueda³

et al. 2020

Crop Science

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“…(sunflower broomrape) is a holoparasitic plant species with a restricted range of hosts both in the wild, where it mainly parasitizes Artemisia spp., as well as in agricultural fields, where it only grows on sunflower (Fernández-Martínez et al, 2015). The parasitic interaction between sunflower and O. cumana generally follows a gene for gene model, with resistance in sunflower (Vrânceanu et al, 1980) and avirulence in O. cumana (Rodríguez-Ojeda et al, 2013b) controlled by dominant alleles at single loci.…”

Section: Introductionmentioning

confidence: 99%

Increased Virulence in Sunflower Broomrape (Orobanche cumana Wallr.) Populations from Southern Spain Is Associated with Greater Genetic Diversity

Martín-Sanz¹,

Malek

Fernández‐Martínez

et al. 2016

Front. Plant Sci.

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Orobanche cumana Wallr. (sunflower broomrape) is a holoparasitic weed that infects roots of sunflower in large areas of Europe and Asia. Two distant O. cumana gene pools have been identified in Spain, one in Cuenca province in the Center and another one in the Guadalquivir Valley in the South. Race F has been hypothesized to have arisen by separate mutational events in both gene pools. In the Guadalquivir Valley, race F spread in the middle 1990’s to become predominant and contained so far with race F hybrids. Recently, enhanced virulent populations of O. cumana have been observed in commercial fields parasitizing race F resistant hybrids. From them, we collected four independent populations and conducted virulence and SSR marker-based genetic diversity analysis. Virulence essays confirmed that the four populations studied can parasitize most of the race F resistant hybrids tested, but they cannot parasitize the differential inbred lines DEB-2, carrying resistance to race F and G, and P-96, resistant to F but susceptible to races G from other countries. Accordingly, the new populations have been classified as race GGV to distinguish them from other races G. Cluster analysis with a set of populations from the two Spanish gene pools and from other areas, mainly Eastern Europe, confirmed that race GGV populations maintain close genetic relatedness with the Guadalquivir Valley gene pool. This suggested that increased virulence was not caused by new introductions from other countries. Genetic diversity parameters revealed that the four populations had much greater genetic diversity than conventional populations of the same area, containing only alleles present in the Guadalquivir Valley and Cuenca gene pools. The results suggested that increased virulence may have resulted from admixture of populations from the Guadalquivir Valley and Cuenca followed by recombination of avirulence genes.

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“…As sunflower wild species grow in a diverse range of habitats, i.e., plains, deserts, salt marshes, forests, and mountains, they are adapted to different environmental conditions and have considerable variability of biotic and abiotic resistance traits. One of the first uses of wild sunflower species is linked to the beginnings of sunflower breeding, when the Russian scientist Sazyperow tried to incorporate resistance to rust from H. argophyllus, while academician Zhdanov successfully used H. tuberosus for the development of cultivars resistant to broomrape [4,46]. Since then, wild sunflower species have been the primary genetic source of resistance to important diseases limiting sunflower production.…”

Section: Sources Of Broomrape Resistancementioning

confidence: 99%

“…Over the past few years the progression of broomrape, its introduction into new countries, and the development of new and more virulent races have been under intensive observation [3]. Sunflower broomrape has a great capacity for dispersion and mutation [4]. Individual broomrape plants produce thousands of minute seeds that are easily dispersed by wind and other agents, including sunflower seeds, to which broomrape seed can be attached.…”

Section: Introductionmentioning

confidence: 99%

Genetic and Genomic Tools in Sunflower Breeding for Broomrape Resistance

Cvejić

Radanović

Dedić

et al. 2020

Genes

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Broomrape is a root parasitic plant causing yield losses in sunflower production. Since sunflower is an important oil crop, the development of broomrape-resistant hybrids is the prime breeding objective. Using conventional plant breeding methods, breeders have identified resistant genes and developed a number of hybrids resistant to broomrape, adapted to different growing regions worldwide. However, the spread of broomrape into new countries and the development of new and more virulent races have been noted intensively. Recent advances in sunflower genomics provide additional tools for plant breeders to improve resistance and find durable solutions for broomrape spread and virulence. This review describes the structure and distribution of new, virulent physiological broomrape races, sources of resistance for introduction into susceptible cultivated sunflower, qualitative and quantitative resistance genes along with gene pyramiding and marker assisted selection (MAS) strategies applied in the process of increasing sunflower resistance. In addition, it presents an overview of underutilized biotechnological tools, such as phenotyping, -omics, and genome editing techniques, which need to be introduced in the study of sunflower resistance to broomrape in order to achieve durable resistance.

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Sunflower Broomrape (Orobanche cumana Wallr.)

Cited by 27 publications

References 87 publications

Characterization of post‐haustorial resistance to sunflower broomrape

Characterization of post‐haustorial resistance to sunflower broomrape

Increased Virulence in Sunflower Broomrape (Orobanche cumana Wallr.) Populations from Southern Spain Is Associated with Greater Genetic Diversity

Genetic and Genomic Tools in Sunflower Breeding for Broomrape Resistance

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