Sequence comparison of the 5' flanking regions of Japanese pear ( Pyrus pyrifolia ) S-RNases associated with gametophytic self-incompatibility

2001 ◽  
Vol 13 (5) ◽  
pp. 289-291 ◽  
Author(s):  
Naoko Norioka ◽  
Hironori Katayama ◽  
Tohru Matsuki ◽  
Takeshi Ishimizu ◽  
Takeshi Takasaki ◽  
...  
Keyword(s):  
Sequence Comparison ◽  
Japanese Pear ◽  
Pyrus Pyrifolia ◽  
Self Incompatibility ◽  
Flanking Regions

scholarly journals Cultivar and Developmental Differences in S-protein Concentration and Self-incompatibility in the Japanese Pear

HortScience ◽  
2000 ◽  
Vol 35 (5) ◽  
pp. 917-920 ◽  
Author(s):  
Shao-Ling Zhang ◽  
Shin Hiratsuka
Keyword(s):  
Pollen Tubes ◽  
Tube Growth ◽  
Cultivar Differences ◽  
Japanese Pear ◽  
Pyrus Pyrifolia ◽  
Self Incompatibility ◽  
S Protein ◽  
Self Pollination ◽  
Rate Of Increase ◽  
S Proteins

Cultivars of the Japanese pear [Pyrus pyrifolia (Burm.) Nakai] have variable degrees of self-incompatibility (SI) and can be classified into at least three groups: strong, intermediate, or weak SI; as shown by the extent of self-pollen tube growth in the style, and the percentage of fruit set following self-pollination. Following self-pollination, the elongation of pollen tubes in the detached styles of `Kosui' and `Kikusui' became increasingly suppressed from 4 days before anthesis (–4 DAA) to 2 days after anthesis (2 DAA). Tube growth of `Kosui' was more suppressed than that of `Kikusui' during this period. In `Osa-Nijisseiki', however, the rate of tube growth did not vary with stage of stylar development, from –8 to 2 DAA. Pollen tubes elongated much better after cross-pollination than after self-pollination at all stages tested, and the extent of the elongation increased as the styles matured. The concentration of total S-protein (sum of two S-proteins per buffer-soluble protein) increased with stylar development, but the rate of increase varied with the cultivar. The rate was significantly greater in the strongly self-incompatible `Kosui' than in the moderately self-incompatible `Kikusui', and was slowest in the weakly self-incompatible `Osa-Nijisseiki' at all developmental stages. During stylar maturation, the concentration of S4-protein, which is common in all cultivars, was highest in `Kosui', followed by `Kikusui' and `Osa-Nijisseiki'. Thus, the cultivar differences in SI expression in the Japanese pear are determined about –4 DAA and appear to be regulated, in part, by the concentration of S-proteins produced in the style.

Dual recognition of S 1 and S 4 pistils by S 4 sm pollen in self-incompatibility of Japanese pear (Pyrus pyrifolia Nakai)

2011 ◽  
Vol 8 (4) ◽  
pp. 689-694 ◽  
Author(s):  
Toshihiro Saito ◽  
Yoshihiko Sato ◽  
Yutaka Sawamura ◽  
Moriyuki Shoda ◽  
Takeshi Takasaki-Yasuda ◽  
...  
Keyword(s):  
Japanese Pear ◽  
Pyrus Pyrifolia ◽  
Self Incompatibility ◽  
Pyrus Pyrifolia Nakai

Highly conserved 5′-flanking regions of two self-incompatibility genes, SLG9 and SRK9

Gene ◽  
1997 ◽  
Vol 191 (1) ◽  
pp. 123-126 ◽  
Author(s):  
Go Suzuki ◽  
Masao Watanabe ◽  
Akira Isogai ◽  
Kokichi Hinata
Keyword(s):  
Self Incompatibility ◽  
Flanking Regions

scholarly journals Cloning of the S8-RNase (S8-allele) of Japanese Pear (Pyrus pyrifolia Nakai).

2002 ◽  
Vol 19 (1) ◽  
pp. 1-6 ◽  
Author(s):  
Carlos CASTILLO ◽  
Takeshi TAKASAKI ◽  
Toshihiro SAITO ◽  
Shigemi NORIOKA ◽  
Tetsu NAKANISHI
Keyword(s):  
Japanese Pear ◽  
Pyrus Pyrifolia ◽  
Pyrus Pyrifolia Nakai

Botryosphaeria berengeriana f.sp. piricola. [Distribution map].

1996 ◽  
Author(s):  
Keyword(s):  
Geographical Distribution ◽  
Japanese Pear ◽  
Pyrus Pyrifolia ◽  
Malus Pumila ◽  
Distribution Map ◽  
European Pear ◽  
New Distribution

Abstract A new distribution map is provided for Botryosphaeria berengeriana f.sp. piricola (Nose) Koganezawa & Sakuma. Hosts: Japanese pear (Pyrus pyrifolia), also European pear (P. communis) and apple (Malus pumila). Information is given on the geographical distribution in China, Anhui, Fujian, Guangxi, Hebei, Henan, Hubei, Jiangsu, Jiangxi, Jilin, Liaoning, Shandong, Shanxi, Sichuan, Zhejiang, Japan, Honshu, Shikoku, Korea Dem. People's Republic, Korea Republic, Taiwan.

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