Genetic study of recessive broomrape resistance in sunflower

Akhtouch, B.; Moral, Lidia del; Leόn, Alberto J.; Velasco, Leonardo; Fernández‐Martínez, José M.; Pérez‐Vich, Begoña

doi:10.1007/s10681-016-1652-z

Cited by 20 publications

(19 citation statements)

References 28 publications

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“…An inbred line, AB-VL-8, which originated from a population developed from interspecific hybridization with the rough sunflower (Helianthus divaricatus) was a successful example and had full resistance to races higher than F [57,59]. Successful identification of quantitative trait loci (QTLs) for O. cumana resistance in the sunflower has been reported [63][64][65][66] and utilization of QTLs in the breeding process is expected. In O. cumana-resistant sunflower genotypes, up-regulation of Phenylalanine Ammonia Lyase (PAL) and defensin genes or the PR5 gene was found, suggesting the implication of these genes in defence responses during infection and limitation of O. cumana growth and development [67].…”

Section: Sunflowermentioning

confidence: 99%

Recent research progress in combatting root parasitic weeds

Samejima

Sugimoto

2018

Biotechnology & Biotechnological Equipment

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The obligate root parasitic Orobanchaceae plants Striga, Orobanche and Phelipanche spp. parasitize economically important crops, vegetables and oil plants. They are the most devastating agricultural weed pests worldwide. Based on an analysis of the climatic requirements of these parasites, very large areas of new territory are at risk of invasion if care is not taken. Recent research in combatting root parasitic weeds was reviewed based on scientific papers reported from 2010 and onwards. The countermeasures fell into eight kinds: resistant varieties, tolerant varieties, microbiological approach, cultural practices, chemical controls, host-induced gene silencing, integrated management and dissemination of technologies including the current situation survey. The development of practical, feasible and economical control technologies against root parasitic weeds would be expected by advancing and combining the countermeasures.

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Section: Sunflowermentioning

confidence: 99%

Recent research progress in combatting root parasitic weeds

Samejima

Sugimoto

2018

Biotechnology & Biotechnological Equipment

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“…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. Nonetheless, more complex genetic control of resistance to O. cumana has been also reported in some sunflower resistant sources, including two dominant genes (Domínguez, 1996), one dominant and one recessive gene (Akhtouch et al, 2002; Akhtouch et al, 2016), one dominant and one modifying gene (Velasco et al, 2007), one recessive gene (Imerovski et al, 2016), two recessive genes (Rodríguez-Ojeda et al, 2001; Akhtouch et al, 2002), or polygenic genetic control (Labrousse et al, 2004). …”

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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“…Resistance was overcome by the appearance of new races, however, it mostly remains race-specific. The appearance of race F led to identification of resistant genotypes controlled by a single dominant gene Or 6 [64,65], two recessive genes or 6 or 7 [66,67], and two partially dominant genes Or 6 Or 7 [68] ( Table 1). Thus, the difference in the mode of inheritance resulted from different backgrounds of the genetic material.…”

Section: Resistance Genes and Resistant Sunflower Genotypesmentioning

confidence: 99%

“…In addition to the studies on qualitative resistance, recent genetic and molecular studies have revealed a more complex control of broomrape resistance in sunflower. The race-specific resistance to O. cumana have been reported for quantitative loci [65,68,72,74] (Table 1). Using different mapping populations, authors have mapped a QTL-controlling resistance to broomrape in different genetic regions.…”

Section: Resistance Genes and Resistant Sunflower Genotypesmentioning

confidence: 99%

“…Depending on the cross, between two and 23 significant QTL were mapped across the sunflower genome. Furthermore, CAPS markers have been developed for facilitation of introgression of major QTL in the region of the peak for or3.2 which can be useful in sunflower breeding for resistance to race G. Another example of recessive resistance was reported by Akhtouch et al [68] who detected QTL for recessive resistance to broomrape race F. However, fine mapping is needed in order to identify markers that could be used in MAS.…”

Section: Molecular Markers For Identification Of Major and Minor Genementioning

confidence: 99%

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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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Genetic study of recessive broomrape resistance in sunflower

Cited by 20 publications

References 28 publications

Recent research progress in combatting root parasitic weeds

Recent research progress in combatting root parasitic weeds

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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