Abstract:
:The full-length cDNAs of eight S ribonucleases (S-RNases) were cloned from stylar RNA of European pear cultivars that could not be characterized by the cleaved amplified polymorphic sequences (CAPS) marker system for genotyping European pear cultivars harboring nine S alleles Sa, Sb, Sd, Se, Sh, Sk, Sl, Sq, and Sr. Comparison of the nucleotide sequences between these cDNAs and six putative S-RNase alleles previously amplified by genomic PCR revealed that five corresponded to the putative Sc-, Si-, Sm-, Sn-, and Sp-RNase alleles and the other three corresponded new S-RNase alleles (designated as putative Sg-, Ss-, and St-RNase alleles). Genomic PCR with a new set of primers was used to amplify 17 S-RNase alleles: 1906 bp (Sg), 1642 bp (St), 1414 bp (Sl), ca. 1.3 kb (Sk and Sq), 998 bp (Se), 440 bp (Sb), and ca. 350 bp (Sa, Sc, Sd, Sh, Si, Sm, Sn, Sp, Sr, and Ss). Among them, S-RNase alleles of similar size were discriminated by digestion with 11 restriction endo-nucleases. The PCR amplification of 17 S-RNase alleles following digestion with the restriction endonucleases provided a new CAPS marker system for rapid S-genotyping of European pear cultivars harboring 17 S alleles. Using the CAPS analysis, Sc, Sg, Si, Sm, Sn, Sp, Ss, and St alleles were found in 32 cultivars, which were classified into 23 S-genotypes.
journal_name
Plant Cell Repjournal_title
Plant cell reportsauthors
Moriya Y,Yamamoto K,Okada K,Iwanami H,Bessho H,Nakanishi T,Takasaki Tdoi
10.1007/s00299-006-0254-ysubject
Has Abstractpub_date
2007-03-01 00:00:00pages
345-54issue
3eissn
0721-7714issn
1432-203Xjournal_volume
26pub_type
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