Inheritance of resistance to the root-knot nematode Meloidogyne arenaria in Myrobalan plum

Esmenjaud, Daniel; Minot, J. C.; Voisin, R; Bonnet, A.; Salesses, G.

doi:10.1007/bf00221900

Cited by 45 publications

(27 citation statements)

References 20 publications

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“…However Myrobalan has been described as a total or partial self-incompatible species (Layne & Sherman, 1986;Esmenjaud et al, 1996;Lecouls et al, 1999); this is in agreement with the low fruit set rate obtained in self-pollinated flowers. In emasculated but non-pollinated flowers accidental pollinations also occurred since an average of 1.1% of the flowers set fruit, a value close to that obtained in self-pollinated flowers (0.9%) indicating that a similar accidental process could happen.…”

Section: Discussionsupporting

confidence: 63%

Significant effect of accidental pollinations on the progeny of low setting Prunus interspecific crosses

et al. 2006

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SummaryThe incidence of fortuitous pollination on interspecific hybridizations of the plum rootstock Myrobalan with the apricot cultivars 'Moniquí' and 'Moniquí Borde' was assessed in this work. Progeny was originated through hand pollination of emasculated flowers of three Myrobalan clones, without bagging, in 1998 and 1999. Fruit set was low and variable among years (1.8-8.0%), but higher than the level of accidental pollination measured with emasculated and non-pollinated flowers (1.2%). Molecular characterization of the progeny was performed with three SSR markers showing that only 28% of the seedlings, obtained by in vitro germination and culture of immature embryos, were hybrids. This represents a lower percentage than expected, and is explained here by the low viability of hybrid embryos and seedlings. The use of molecular markers is discussed in terms of a convenient method for an early identification of putative hybrids in breeding programs with low setting crosses, where the proportion of non-hybrids is magnified.

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Section: Discussionsupporting

confidence: 63%

Significant effect of accidental pollinations on the progeny of low setting Prunus interspecific crosses

et al. 2006

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“…Myrobalan progenies are crosses of the same resistant clone P.2175 (carrying the heterozygous dominant Ma gene) with each of the three susceptible parents P.2646, P.16.5 and P.2032 (homozygous recessive for Ma) (Esmenjaud et al 1996b;Lecouls et al 1997). The segregating progeny of the Japanese plum is a cross between the resistant accession J.222 (resistant to M. arenaria, M. incognita, M. javanica and Meloidogyne sp.…”

Section: Materials Segregating For Prunophora Rkn Genesmentioning

confidence: 99%

“…Florida Lecouls et al 1997;Rubio-Cabetas et al 1999). All three clones carry one dominant allele of a single resistance gene, designated Ma1, Ma2 and Ma3, respectively (Esmenjaud et al 1996b;Rubio-Cabetas et al 1998). Each of these Ma resistance alleles confers a high and wide-spectrum resistance to M. arenaria, M. incognita, M. javanica and M. sp.…”

Section: Introductionmentioning

confidence: 99%

Location of independent root-knot nematode resistance genes in plum and peach

Claverie¹,

Bosselut²,

Lecouls³

et al. 2003

Theor Appl Genet

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Prunus species express different ranges and levels of resistance to the root-knot nematodes (RKN) Meloidogyne spp. In Myrobalan plum ( Prunus cerasifera), the dominant Ma gene confers a high-level and wide-spectrum resistance to the predominant RKN, Meloidogyne arenaria, Meloidogyne incognita, Meloidogyne javanica and the isolate Meloidogyne sp. Florida which overcomes the resistance of the Amygdalus sources. In Japanese plum ( Prunus salicina), a similar wide-spectrum dominant resistance gene, termed R(jap), has been hypothesized from an intraspecific segregating cross. In peach, two crosses segregating for resistance to both M. incognita and M. arenaria were used to identify single genes that each control both RKN species in the Shalil ( R(Mia557)) and Nemared ( R(MiaNem)) sources. Localisation of these genes was made possible using the RFLP and SSR- saturated reference Prunus map TxE, combined with a BSA approach applied to some of the genes. The Ma1 allele carried by the Myrobalan plum accession P.2175 was localised on the linkage group 7 at an approximate distance of 2 cM from the SSR marker pchgms6. In the Japanese plum accession J.222, the gene R(jap) was mapped at the same position in co-segregation with the SSR markers pchgms6 and CPPCT022. The peach genes R(Mia557) and R(MiaNem), carried by two a priori unrelated resistance sources, were co-localized in a subtelomeric position on linkage group 2. This location was different from the more centromeric position previously proposed by Lu et al. (1999) for the resistance gene Mij to M. incognita and M. javanica in Nemared, near the SSR pchgms1 and the STS EAA/MCAT10. By contrast, R(Mia557) and R(MiaNem) were flanked by STS markers obtained by Yamamoto and Hayashi (2002) for the resistance gene Mia to M. incognita in the Japanese peach source Juseitou. Concordant results for the three independent sources, Shalil, Nemared and Juseitou, suggest that these peach RKN sources share at least one major gene resistance to M. incognita located in this subtelomeric position. We showed that plum and peach genes are independent and, thus, can be pyramided into interspecific hybrid rootstocks based on the plum and peach species.

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“…Florida (FL) (Lecouls et al 1997;Rubio-Cabetas et al 1999) and to the minor species Melpidogyne mayaguensis (Fargette et al 1996;Rubio-Cabetas et al 1999). This resistance is conferred by the Ma dominant resistance gene in the heterozygous state in P.2175 (Esmenjaud et al 1996b;Rubio-Cabetas et al 1998). The Ma resistance was not overcome by any of the 30 RKN species and isolates tested Fernandez et al 1994) and was not modified under conditions known to affect plant defenses to RKN such as high temperature and high inoculum pressure (Esmenjaud et al 1996a).…”

Section: Introductionmentioning

confidence: 97%

Microsatellite genetic linkage maps of myrobalan plum and an almond-peach hybrid?location of root-knot nematode resistance genes

et al. 2004

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Inheritance and linkage studies were carried out with microsatellite [or simple sequence repeat (SSR)] markers in a F(1) progeny including 101 individuals of a cross between Myrobalan plum ( Prunus cerasifera Ehrh) clone P.2175 and the almond (Prunus dulcis Mill.)-peach ( Prunus persica L. Batsch) hybrid clone GN22 ["Garfi" (G) almond x "Nemared" (N) peach]. This three-way interspecific Prunus progeny was produced in order to associate high root-knot nematode (RKN) resistances from Myrobalan and peach with other favorable traits for Prunus rootstocks from plum, peach and almond. The RKN resistance genes, Ma from the Myrobalan plum clone P.2175 and R(MiaNem) from the 'N' peach, are each heterozygous in the parents P.2175 and GN22, respectively. Two hundred and seventy seven Prunus SSRs were tested for their polymorphism. One genetic map was constructed for each parent according to the "double pseudo-testcross" analysis model. The Ma gene and 93 markers [two sequence characterized amplified regions (SCARs), 91 SSRs] were placed on the P.2175 Myrobalan map covering 524.8 cM. The R(MiaNem) gene, the Gr gene controlling the color of peach leaves, and 166 markers (one SCAR, 165 SSRs) were mapped to seven linkage groups instead of the expected eight in Prunus. Markers belonging to groups 6 and 8 in previous maps formed a single group in the GN22 map. A reciprocal translocation, already reported in a G x N F(2), was detected near the Gr gene. By separating markers from linkage groups 6 and 8 from the GN22 map, it was possible to compare the eight homologous linkage groups between the two maps using the 68 SSR markers heterozygous in both parents (anchor loci). All but one of these 68 anchor markers are in the same order in the Myrobalan plum map and in the almond-peach map, as expected from the high level of synteny within Prunus. The Ma and R(MiaNem)genes confirmed their previous location in the Myrobalan linkage group 7 and in the GN22 linkage group 2, respectively. Using a GN22 F(2) progeny of 78 individuals, a microsatellite map of linkage group 2 was also constructed and provided additional evidence for the telomeric position of R(MiaNem) in group 2 of the Prunus genome.

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Inheritance of resistance to the root-knot nematode Meloidogyne arenaria in Myrobalan plum

Cited by 45 publications

References 20 publications

Significant effect of accidental pollinations on the progeny of low setting Prunus interspecific crosses

Significant effect of accidental pollinations on the progeny of low setting Prunus interspecific crosses

Location of independent root-knot nematode resistance genes in plum and peach

Microsatellite genetic linkage maps of myrobalan plum and an almond-peach hybrid?location of root-knot nematode resistance genes

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