Inheritance of resistance to race F of broomrape in sunflower lines of different origins

Akhtouch, B.; Muñoz‐Ruz, J.; Melero‐Vara, J. M.; Fernández‐Martínez, José M.; Domı́nguez, J.

doi:10.1046/j.1439-0523.2002.00701.x

Cited by 50 publications

(41 citation statements)

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“…Resistance to this new race has been found in both cultivated and wild sunflower (Domínguez 1999;Sukno et al 1999;Fernµndez-Martínez et al 2000;Jan et al 2002). Resistance to race F of broomrape in germplasm derived from cultivated sunflower has been reported to be recessive and controlled by alleles at two loci (Rodríguez-Ojeda et al 2001;Akhtouch et al 2002).…”

Section: Introductionmentioning

confidence: 99%

Quantitative trait loci for broomrape (Orobanche cumana Wallr.) resistance in sunflower

et al. 2004

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Broomrape (Orobanche cumana Wallr.) is a root parasite of sunflower that is regarded as one of the most important constraints of sunflower production in the Mediterranean region. Breeding for resistance is the most effective method of control. P-96 is a sunflower line which shows dominant resistance to broomrape race E and recessive resistance to the very new race F. The objective of this study was to map and characterize quantitative trait loci (QTL) for resistance to race E and to race F of broomrape in P-96. A population from a cross between P-96 and the susceptible line P-21 was phenotyped for broomrape resistance in four experiments, two for race E and two for race F, by measuring different resistance parameters (resistance or susceptibility, number of broomrape per plant, and proportion of resistant plants per F(3) family). This population was also genotyped with microsatellite and RFLP markers. A linkage map comprising 103 marker loci distributed on 17 linkage groups was developed, and composite interval mapping analyses were performed. In total, five QTL ( or1.1, or3.1, or7.1 or13.1 and or13.2) for resistance to race E and six QTL ( or1.1, or4.1, or5.1, or13.1, or13.2 and or16.1) for resistance to race F of broomrape were detected on 7 of the 17 linkage groups. Phenotypic variance for race E resistance was mainly explained by the major QTL or3.1 associated to the resistance or susceptibility character ( R(2)=59%), while race F resistance was explained by QTL with a small to moderate effect ( R(2) from 15.0% to 38.7%), mainly associated with the number of broomrape per plant. Or3.1 was race E-specific, while or1.1, or13.1 and or13.2 of were non-race specific. Or13.1, and or13.2 were stable across the four experiments. Or3.1, and or7.1 were stable over the two race E experiments and or1.1 and or5.1 over the two race F experiments. The results from this study suggest that resistance to broomrape in sunflower is controlled by a combination of qualitative, race-specific resistance affecting the presence or absence of broomrape and a quantitative non-race specific resistance affecting their number.

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Section: Introductionmentioning

confidence: 99%

Quantitative trait loci for broomrape (Orobanche cumana Wallr.) resistance in sunflower

et al. 2004

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“…Most genetic studies on different resistance sources to races A through E concluded that a major dominant gene conferred resistance to the latest race and to the previous ones (Vrânceanu et al, 1980;Sukno et al, 1999), even though other genetic mechanisms such as two dominant genes were also reported (Domínguez, 1996b). In contrast to races A though E, initial genetic studies on resistance to race F concluded the presence of recessive alleles at two independent loci named Or 6 and Or 7 (Rodríguez-Ojeda et al, 2001;Akhtouch et al, 2002). Contrarily, Pérez-Vich et al (2002) found that resistance to race F in sunflower line J1 derived from wild species was controlled by dominant alleles at a single gene designated Or 6 .…”

Section: Characterization Of Resistancementioning

confidence: 99%

Progress in research on breeding for resistance to sunflower broomrape

Fernández‐Martínez

Velasco

Pérez‐Vich

2012

Helia

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SUMMARYSunflower broomrape (Orobanche cumana Wallr.) is a parasitic angiosperm regarded as one of the most serious production constraints in many sunflower-producing countries. Historically, sunflower breeders have been successful in developing cultivars resistant to this parasite, but the introduction of new resistance sources has been frequently followed by the appearance of new pathogenic races overcoming the resistance. The present review sets out to examine the principal achievements in this field that took place during the last decades, focusing on the most recent advances in the research. In recent years, several research groups have made relevant contributions in breeding for the resistance and the development of control strategies. Following the identification and characterization of new virulent races, new sources and mechanisms of resistance have been developed and characterized at the genetic and molecular level. There have been also important contributions to the knowledge of the biology and genetics of the parasite that will contribute to the understanding of the dynamics of broomrape populations and race evolution. Important advances have also been made in the use of imidazolinone (IMI)-resistant hybrids as an alternative method of control. Most of the studies on sunflower breeding for resistance to O. cumana have been concentrated so far on the host plant, but in spite of the recent advances little is known about the important aspects of the parasite side of the equation such as the breeding system and genetics of virulence. An unsolved problem is the existing uncertainty in the designation of races and resistance genes identified in different countries. There is a need for international cooperation in this area using common differentials and molecular tools. Emphasis is given to the need for a multidisciplinary approach ranging from studying the mechanisms underlying resistance in the host plant to the reproductive biology and genetics of traits related to parasitism in O. cumana. The combination of long term strategies involving the complete host-parasite system and the integration of classical and molecular approaches is expected to contribute to the development of more

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“…b NK: not known; the parasite was reported, but no information about race/s is known. Vrânceanu et al (1980), Akhtouch et al (2002), Pacureanu et al (2004), andPérez-Vich et al (2004).…”

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“…proved to be a major reservoir of resistance genes against O. cumana race F (Fernández-Martínez et al, 2000), and some of them were incorporated into cultivated sunflower through interspecific hybridization (Jan & Fernández-Martínez, 2002). Resistance to race F from Spain found in the lines KI-534 and P-96, derived from cultivated germplasm, was controlled by recessive alleles at two loci (Rodriguez-Ojeda et al, 2001;Akhtouch et al, 2002), the same recessive genes controlling resistance to race E in the line KI-534 (Rodriguez-Ojeda et al, 2001). Contrarily, resistance to this race from Spain in line J1, derived from interspecific crosses, and to race F from Romania in line LC1093 was found to be mainly dominant and controlled in J1 by the Or 6 gene, with incomplete dominance, and Or 7 , whose expression was influenced by the environment (Velasco et al, 2007), and in LC1093 by Or 6 (Pacureanu-Joita et al, 2004) (Table 2).…”

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History of the race structure of Orobanche cumana and the breeding of sunflower for resistance to this parasitic weed: A review

Molinero-Ruiz

Delavault

Pérez‐Vich

et al. 2015

Span. j. agric. res.

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Broomrape, caused by Orobanche cumana, has affected sunflowers since the early 20 th century in Eastern Europe. Currently, it limits sunflower oil production in Southern and Eastern Europe and in some areas of Asia, causing around 50% seed losses when susceptible hybrids are grown. Covered in this review are aspects such as: biological processes that are common to Orobanche spp. and/or particular to O. cumana in sunflower, genetic resistance and its mechanisms, races of the parasite identified in different countries throughout the time and their increasing virulence, and breeding for resistance to some herbicides as a novel control option. The main purpose is to present an updated and, as far as possible, complete picture of the way both the parasitic weed and its host crop have evolved in time, and how they co-exist in the current agriculture. Additionally, we propose a system for determining the races of the parasite that can be internationally adopted from now. In the context of minimal harmful effects on the environment, changing patterns of land use in farming systems, and global environment changes, the final goal of this work is to provide all those interested in parasites from field crops and their integrated management compiled information on the sunflower -O. cumana system as a case study.Additional key words: genes of resistance; Helianthus annuus L.; broomrape; parasite races; virulence. Abbreviations used: AHAS (acetohydroxyacid synthase); GS (germination stimulants); HR (herbicide resistant); IMI (resistance to imidazolinone); PG (polygalacturonases); PME (pectin methyl esterase); POB (pyrimidyloxybenzoates); QTL (quantitative trait loci); SU (sulfonylurea); TZ (triazolopyrimidines).Citation: Molinero-Ruiz, L.; Delavault, P.; Pérez-Vich, B.; Pacureanu-Joita, M.; Bulos, M.; Altieri, E.; Domínguez, J. (2015). History of the race structure of Orobanche cumana and the breeding of sunflower for resistance to this parasitic weed: A review.

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Inheritance of resistance to race F of broomrape in sunflower lines of different origins

Cited by 50 publications

References 4 publications

Quantitative trait loci for broomrape (Orobanche cumana Wallr.) resistance in sunflower

Quantitative trait loci for broomrape (Orobanche cumana Wallr.) resistance in sunflower

Progress in research on breeding for resistance to sunflower broomrape

History of the race structure of Orobanche cumana and the breeding of sunflower for resistance to this parasitic weed: A review

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