The RHV region of S-RNase in the European pear (Pyrus communis) is not required for the determination of specific pollen rejection

Broothaerts W (2003) New findings in apple S-genotype analysis resolve previous confusion and request the re-numbering of some S-alleles. Theor Appl Genet 106:703–714 Doyle JJ, Doyle JL (1987) A rapid DNA isolation procedure for small quantities of fresh leaf tissue. Phytochem Bull 19:11–15 Entani T, Iwano M, Shiba H, Che FS, Isogai A, Takayama S (2003) Comparative analysis of the self-incompatibility (S-) locus region of Prunus mume: identification of a pollen-expressed F-box gene with allelic diversity. Genes Cells 8:203–213 Horiuchi H, Yanai K, Takagai M, Yano K, Wakabayashi E, Sanda A, Mine S, Ohgi K, Irie M (1988) Primary structure of a base non-specific ribonuclease from Rhizopus niveus. J Biochem 103:408–418 Huang S, Lee HS, Karunanandaa B, Kao TH (1994) Ribonuclease activity of Petunia inflata S-proteins is essential for rejection of self-pollen. Plant Cell 6:1021–1028 Ida K, Norioka S, Yamamoto M, Kumasaka T, Yamashita E, Newbigin E, Clarke AE, Sakiyama F, Sato M (2001) The 1.55 Å resolution structure of Nicotiana alata S (F11)-RNase associated with gametophytic self-incompatibility. J Mol Biol 314:103–112 Ioerger TR, Gohlke JR, Xu B, Kao TH (1991) Primary structural features of the self-incompatibility protein in Solanaceae. Sex Plant Reprod 4:81–87 Ishimizu T, Shinkawa T, Sakiyama F, Norioka S (1998a) Primary structural features of Rosaceous S-RNases associated with gametophytic self-incompatibility. Plant Mol Biol 37:931–941 Ishimizu T, Endo T, Yamaguchi-Kabata Y, Nakamura KT, Sakiyama F, Norioka S (1998b) Identification of regions in which positive selection may operate in S-RNase of Rosaceae: implication for S-allele-specific recognition sites in S-RNase. FEBS Lett 440:337–342 Janick J, Moore J (1975) Advances in fruit breeding. Purdue University Press, West Lafayette, Ind. Kheyr-Pour A, Bintrim SB, Ioerger TR, Remy R, Hammond SA, Kao TH (1990) Sequence diversity of pistil S-proteins associated with gametophytic self-incompatibility in Nicotiana alata. Sex Plant Reprod 3:88–97 Lai Z, Ma W, Han B, Liang L, Zhang Y, Hong G, Xue Y (2002) An F-box gene linked to the self-incompatibility (S) locus of Antirrhinum is expressed specifically in pollen and tapetum. Plant Mol Biol 50:29–42 Luu D, Qin X, Morse D, Cappadocia M (2000) S-RNase uptake by compatible pollen tubes in gametophytic self-incompatibility. Nature 407:649–651 Matsuura T, Sakai H, Unno M, Ida K, Sato M, Sakiyama F, Norioka S (2001) Crystal structure at 1.5-Å resolution of Pyrus pyrifolia pistil ribonuclease responsible for gametophytic self-incompatibility. J Biol Chem 276:45261–45269 Matton DP, Maes O, Laublin G, Xike Q, Bertrand C, Morse D, Cappadocia M (1997) Hypervariable domains of self-incompatibility RNases mediate allele-specific pollen recognition. Plant Cell 9:1757–1766 Matton DP, Luu DT, Xike Q, Laublin G, O’Brien M, Maes O, Morse D, Cappadocia M (1999) Production of an S-RNase with dual specificity suggests a novel hypothesis for the generation of new S-alleles. Plant Cell 11:2087–2097 McClure BA, Haring V, Ebert PR, Anderson MA, Simpson RJ, Sakiyama F, Clarke AE (1989) Style self-incompatibility gene products of Nicotiana alata are ribonuclease. Nature 342:955–957 McCubbin AG, Chung YY, Kao T (1997) A mutant S3 RNase of Petunia inflata lacking RNase activity has an allele-specific dominant negative effect on self-incompatibility interactions. Plant Cell 9:85–95 Qiao H, Wang H, Zhao L, Zhou J, Huang J, Zhang Y, Xue Y (2004) The F-box protein AhSLF-S2 physically interacts with S-RNases that may be inhibited by the ubiquitin/26S proteasome pathway of protein degradation during compatible pollination in Antirrhinum. Plant Cell 16:582–595 Sassa H, Nishio T, Kowyama Y, Hirano H, Koba T, Ikeshashi H (1996) Self-incompatibility (S) alleles of Rosaceae encode members of a distinct class of the T2/S ribonuclease superfamily. Mol Gen Genet 250:547–557 Tsai DS, Lee HS, Post LC, Kreiling KM, Kao TH (1992) Sequence of an S-protein of Lycopersicon peruvianum and comparison with other solanaceous S-proteins. Sex Plant Reprod 5:256–263 Ushijima K, Sassa H, Dandekar AM, Gradziel TM, Tao R, Hirano H (2003) Structural and transcriptional analysis of the self-incompatibility locus of almond: identification of a pollen-expressed F-box gene with haplotype-specific polymorphism. Plant Cell 15:771–781 Weissman AM (2001) Themes and variations on ubiquitylation. Nat Rev Mol Cell Biol 2:169–178 Wunsch A, Hormaza JI (2004) Cloning and characterization of genomic DNA sequences of four self-incompatibility alleles in sweet cherry (Prunus avium L.). Theor Appl Genet 108:299–305 Yamane H, Ikeda K, Ushijima K, Sassa H, Tao RA (2003) Pollen-expressed gene for a novel protein with an F-box motif that is very tightly linked to a gene for S-RNase in two species of cherry, Prunus cerasus and P. avium. Plant Cell Physiol 44:764–769 Zisovich HA, Stern AR, Shafir S, Goldway M (2004) Identification of seven S-alleles from the European pear (Pyrus communis) and the determination of compatibility among cultivars. J Hort Sci Biotechnol 79:101–106 Zurek DM, Mou B, Beecher B, McClure B (1997) Exchanging sequence domains between S-RNases from Nicotiana alata disrupts pollen recognition. Plant J 11:797–808