The inheritance of partial self-compatibility inBrassica oleracea L.: results from a half diallel homozygous for a highly recessive S-allele

1978 ◽  
Vol 53 (2) ◽  
pp. 81-87 ◽  
Author(s):  
T. Hodgkin
Keyword(s):  
Self Compatibility ◽  
S Allele ◽  
Half Diallel

scholarly journals How does the S-locus determining self-incompatibility in stone fruits work in self-compatible peach?

2005 ◽  
pp. 93-100
Author(s):  
Attila Hegedűs ◽  
Júlia Halász ◽  
Zoltán Szabó ◽  
József Nyéki ◽  
Andrzej Pedryc
Keyword(s):  
Prunus Persica ◽  
Fruit Trees ◽  
S Locus ◽  
Recognition Mechanism ◽  
Specific Pcr ◽  
Fruit Species ◽  
Self Fertilization ◽  
Self Compatibility ◽  
S Allele ◽  
Available Information

The majority of stone fruit species are self-incompatible, a feature that is determined by a specific recognition mechanism between the S-ribonuclease enzymes residing in the pistils and the F-box proteins expressed in the pollen tubes. Failure in the function of any component of this bipartite system resulted in self-compatibility (SC) in many cultivars of Prunus species. Peach (Prunus persica (L.) Batsch.) is the only species in the Prunoideae subfamily that is traditionally known to be self-compatible, but its molecular background is completely unknown. Isoelectric focusing and S-gene specific PCR revealed that SC is not due to functional inability of pistil ribonucleases. We hypothesize that SC may be a consequence of a kind of pollen-part mutation or the action of one or more currently unknown modifier gene(s). Only two S-alleles were identified in a set of peach genotypes of various origin and phenotypes in contrast to the 17–30 alleles described in self-incompatible fruit trees. Most important commercial cultivars carry the same S-allele and are in a homozygote state. This indicates the common origin of these cultivars and also the consequence of self-fertilization. According to the available information, this is the first report to elucidate the role of S-locus in the fertilization process of peach. 

scholarly journals Evaluation of Self-Incompatibility Locus Diversity of Domestic Plum (Prunus Domestica L.) using DNA-Based S-Genotyping

2013 ◽  
Vol 67 (2) ◽  
pp. 109-115 ◽  
Author(s):  
Irita Kota-Dombrovska ◽  
Gunārs Lācis
Keyword(s):  
Self Incompatibility ◽  
Limited Information ◽  
Prunus Domestica ◽  
Prunus Species ◽  
Allele Specific ◽  
Self Compatibility ◽  
S Allele ◽  
Functional Relevance ◽  
Further Development ◽  
Incompatibility Locus

There is limited information on genetics of self-incompatibility in domestic plum (P. domestica L.). In comparison with other Prunus species, there are no S-allele specific markers for the identification of compatibility groups, and thus, genetic diversity of self-compatibility genes is not clear. Six S-locus-specific markers previously used for other Prunus species were used to study genetics of self-compatibility of plums, and 33 domestic plum cultivars were genotyped. The applied primer pairs showed good transferability among Prunus species and showed high diversity in the tested plant material (14-37 alleles per marker, average observed heterozygocity - 0.953). Applification of the tested primer pairs allowed discrimination of all plum cultivars by unique S-genotypes. Based on the obtained results, primer pairs EM-PC2consFD/ EM-PC3cons RD, PasPcons-F1/ PaC1cons-R1 and F-Box50A/ F-Box intronR are suggested as supplementary markers for characterisation and identification of plum germplasm with potential functional relevance. Although the markers used did not strictly distinguish plum cultivars according to compatibility groups (selfcompatible, partly self-compatible and self-incompatible), group-unique amplification fragments were identified, which can serve as a baseline in further development of specific markers.

scholarly journals Self-compatibility of 3 Apple Cultivars and Identification of S-allele Genotypes in Their Self-pollinated Progenies

2007 ◽  
Vol 6 (1) ◽  
pp. 27-32 ◽  
Author(s):  
Akira Saito ◽  
Tomoko Fukasawa-Akada ◽  
Megumi Igarashi ◽  
Takashi Sato ◽  
Masahiko Suzuki
Keyword(s):  
Self Compatibility ◽  
Apple Cultivars ◽  
S Allele

scholarly journals 483 Identification of S-RNase in Tetraploid Sour Cherry

HortScience ◽  
2000 ◽  
Vol 35 (3) ◽  
pp. 477D-477
Author(s):  
H. Yamane ◽  
R. Tao ◽  
A. Sugiura ◽  
N. Hauck ◽  
A. Iezzoni
Keyword(s):  
Cdna Clone ◽  
Active Sites ◽  
Sour Cherry ◽  
Self Incompatibility ◽  
Multiple Alleles ◽  
Germplasm Collections ◽  
S Alleles ◽  
Self Compatibility ◽  
S Allele ◽  
Mapping Populations

Most fruit tree species of Prunus exhibit gametophytic self-incompatibility, which is controlled by a single locus with multiple alleles (S-alleles). One interesting aspect of gametophytic self-incompatibility is that it commonly “breaks down” as a result of polyploidy, resulting in self-compatible individuals. This phenomenon is exhibited in the diploid sweet cherry (P. avium) and the tetraploid sour cherry (P. cerasus), in which most cultivars are self-compatible. Recently, S-gene products in pistil of Prunus species were shown to be S-RNases. As sour cherry is one Prunus species, it is likely to possess S-alleles encoding pistil S-RNases. To confirm this, we surveyed stylar extracts of 11 sour cherry cultivars, including six self-compatible and five self-incompatible cultivars, by 2D-PAGE. As expected, all 11 cultivars tested yielded glycoprotein spots similar to S-RNases of other Prunus species in terms of Mr, immunological characteristics, and N-terminal sequences. A cDNA clone encoding one of these glycoproteins was cloned from the cDNA library constructed from styles with stigmas of a self-compatible cultivar, `Erdi Botermo'. Deduced amino acid sequence from the cDNA clone contained two active sites of T2/S type RNases and five conserved regions of rosaceous S-RNases. In order to determine the inheritance of self-incompatibility and S-allele diversity in sour cherry, we conducted genomic DNA blot analysis for sour cherry germplasm collections and mapping populations in MSU using the cDNA as a probe. To date, it appears as if self-compatibility in sour cherry is not simply controlled by a self-fertile allele as demonstrated in other Prunus species.

The serotonin transporter gene and personality: association of the 5-HTTLPR s allele, anxiety, depression and affective temperaments

2008 ◽  
Vol 149 (33) ◽  
pp. 1569-1573 ◽  
Author(s):  
Xénia Gonda
Keyword(s):  
Serotonin Transporter ◽  
Serotonin Transporter Gene ◽  
Transporter Gene ◽  
Affective Temperaments ◽  
S Allele ◽  
Anxiety Depression

Az 5-HTTLPR-polimorfizmus kiemelt szerepet játszik a hangulatzavarok és a neuroticismus hátterében. Vizsgálatunk célja az 5-HTTLPR és a neuroticismus komponensei közül a szorongásra és a depresszióra való hajlam és az affektív labilitás összefüggésének vizsgálata volt pszichiátriailag egészséges populációban. A vizsgálat résztvevői a Spielberger-féle vonás- és állapotszorongás kérdőívet (STAI), a Zung-féle önértékelő depresszióskálát (ZSDS), valamint a TEMPS-A kérdőívet töltötték ki. Az 5-HTTLPR genotípust PCR segítségével határoztuk meg. A pontszámokat a különböző csoportokban ANOVA segítségével hasonlítottuk össze. Az s allélt hordozók szignifikánsan magasabb pontszámot kaptak a ZSDS és a STAI állapotszorongás-skálán, valamint a depresszív komponenst hordozó affektívtemperamentum-skálákon is. Eredményeink szerint a neuroticismus komponensei önállóan is összefüggést mutatnak az 5-HTTLPR-polimorfizmussal, ami a vonás egységességét támasztja alá. Eredményeink rámutatnak további kutatások szükségességére az egészséges populációban megfigyelhető vonások genetikai hátterének feltárásával kapcsolatban, mivel ezek a neuropszichiátriai betegségek endofenotípusaiként a jövőbeli kutatások alapvető építőkövei lehetnek.

Sign in / Sign up

Export Citation Format

Share Document