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Characterization and mapping of non-S gametophytic self-compatibility in sweet cherry (Prunus avium L.)
被引:38
作者:
Cachi, A. M.
[1
]
Wuensch, A.
[1
]
机构:
[1] Ctr Invest & Tecnol Agroalimentaria Aragon CITA, Zaragoza 50059, Spain
关键词:
Bulked segregant analysis;
ppm (pollen part mutant);
self-compatibility;
SSR;
GENETIC-LINKAGE MAP;
F-BOX GENE;
PERSICA L;
MOLECULAR CHARACTERIZATION;
MICROSATELLITE MARKERS;
LOCUS REGION;
SOUR CHERRY;
INCOMPATIBILITY ALLELES;
RESISTANCE GENES;
RNASE GENE;
D O I:
10.1093/jxb/erq374
中图分类号:
Q94 [植物学];
学科分类号:
071001 ;
摘要:
Self-incompatibility in Prunus (Rosaceae) species, such as sweet cherry, is controlled by a multiallelic locus (S), in which two tightly linked genes, S-RNase and SFB (S haplotype-specific F-box), determine the specificity of the pollen and the style. Fertilization in these species occurs only if the S-specificities expressed in the pollen and the pistils are different. However, modifier genes have been proposed to be necessary for a full manifestation of the self-incompatibility response. 'Cristobalina' is a spontaneous self-compatible sweet cherry cultivar that originated in Eastern Spain. Previous studies with this genotype suggested that pollen modifier gene(s), not linked to the S-locus, may be the cause of self-incompatibility breakdown. In this work, an F-1 population from 'Cristobalina' that segregates for this trait was used to identify molecular markers linked to self-compatibility by bulked segregant analysis. One simple sequence repeat (SSR) locus (EMPaS02) was found to be linked to self-compatibility in this population at 3.2 cM. Two additional populations derived from 'Cristobalina' were used to confirm the linkage of this marker to self-compatibility. Since EMPaS02 has been mapped to the sweet cherry linkage group 3, other markers located on the same linkage group were analysed in these populations to confirm the location of the self-compatibility locus.
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页码:1847 / 1856
页数:10
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