Wyniki wyszukiwania

1

DMRT1-Dmrt1, the sex determining or sex differentiating gene in Vertebrata

100%

Bratus A., Slota E.

Folia Biologica

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2006

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tom 54

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nr 3-4

2

Genetic mechanisms underlying male sex determination in mammals

86%

Piprek R. P.

Journal of Applied Genetics

|

2009

|

tom 50

|

nr 4

347-360

Genetic control of gonadal development proceeds through either the male or female molecular pathways, driving bipotential gonadal anlage differentiation into a testis or ovary. Antagonistic interactions between the 2 pathways determine the gonadal sex. Essentially sex determination is the enhancement of one of the 2 pathways according to genetic sex. Initially, Sry with other factors upregulates Sox9 expression in XY individuals. Afterwards the expression of Sox9 is maintained by a positive feedback loop with Fgf9 and prostaglandin D₂ as well as by autoregulative ability of Sox9. If these factors reach high concentrations, then Sox9 and/or Fgf9 may inhibit the female pathway. Surprisingly, splicing, nuclear transport, and extramatrix proteins may be involved in sex determination. The male sex determination pathway switches on the expression of genes driving Sertoli cell differentiation. Sertoli cells orchestrate testicular differentiation. In the absence of Sry, the predomination of the female pathway results in the realization of a robust genetic program that drives ovarian differentiation.

3

Craniometrical sex determination of wild cat Felis silvestris in Bulgaria

86%

Petrov I., Nikolov H., Gerasimov S.

Acta Theriologica

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1992

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tom 37

|

nr 4

Analyses were made of 118 skull measurements of adult wild cats Felis silvestris Schreber, 1777 from Bulgaria, taken on 24 males, 20 females, and 10 animals whose sex was not known in advance. Group (cluster) analysis of cases, factor analysis, and stepvise discriminant analysis were adapted. The cluster analysis of cases indicated a high level of sex mixture (up to 40%), which suggested the importance of the outliers in the data. Six keys to sexual dimorphism, of very high statistical significance were produced, through the stepvise discriminant analysis. They included from 9 down to 1 variables each, which provided from 100% down to 93.8% of correct sex classification of wild cat skulls.

4

AFLP marker polymorphism in cucumber [Cucumis sativus L.] near-isogenic lines different in terms of sex expression

86%

Witkowicz J., Urbanczyk-Wochniak E., Przybecki Z.

Cellular and Molecular Biology Letters

|

2002

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tom 07

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nr Suppl.

5

Molecular mechanisms underlying female sex determination - antagonism between female and male pathway

72%

Piprek R. P.

Folia Biologica

|

2009

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tom 57

|

nr 3-4

105-113

6

Artificial gynogenesis in common bream (Abramis brama (L.)) induced by cold-temperature shock

72%

Kucharczyk D., Luczynski M. J., Szczerbowski A., Woznicki P., Luczynski M., Targonska-Dietrich K., Kujawa R. J., Mamcarz A.

Archives of Polish Fisheries

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2004

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tom 12

|

nr 2

Bream, Abramis brama (L.), eggs fertilized with genetically inactivated sperm (UV irradiation dose of 1920 J m-2) were exposed to thermal cold shock to produce meiotic gynogenotes. The shock was applied at one-minute intervals from 1 to 10 min after egg insemination. The temperature of the shock was 2.0 ± 0.1°C, and its duration was 45 min. The water temperature prior to the shock was 20.0°C. Eggs fertilized with genetically inactivated sperm (putative haploids) exhibited retarded and abnormal development. The yield of gynogenesis was relatively low, except for the group to which the shock was applied 1 min after fertilization (about 30% in comparison with the controls). Ninety fish from the control and gynogenetic groups were reared for ten months. The survival of the gynogenetic bream was twofold lower than that of the controls. The gynogenotes were highly variable in size and exhibited some morphological abnormalities. The sex ratios in the control groups were close to 1:1, whereas all the gynogenotes were female.

7

The identification of differential cDNA clones from two floral libraries in cucumber Cucumis sativus L.

72%

Kowalczyk M. E., Urbanczyk-Wochniak E., Przybecki Z.

Cellular and Molecular Biology Letters

|

2002

|

tom 07

|

nr Suppl.

8

Karyological studies on six bisexual weevil species [Coleoptera, Curculionidae]

72%

Lachowska D., Holecova M., Rozek M.

Folia Biologica

|

1999

|

tom 47

|

nr 3-4

9

Chromosome survey in seven bisexual species of weevil [Coleoptera, Curculionidae]

72%

Lachowska D.

Folia Biologica

|

1999

|

tom 47

|

nr 3-4

10

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Developmental expression and hormonal regulation of male-specific yellow protein mRNA in adults of the desert locust, Schistocerca gregaria

58%

Begum M., Rahman M. M., Huybrechts R., De Loof A.

Pestycydy

|

2008

|

nr 1-2

35-41

Adult males of Schistocerca gregaria turn yellow when they become sexually mature. This is due to the deposition in the cuticle of a male-specific Yellow Protein (YP), of which the amino acid sequence is known. Yellowing only happens in crowd-reared (gregarious) males, and results from the deposition of a specific ‘Yellow Protein’. If individual males (solitarious) are isolated after the adult emergence, they become sexually mature but they do not turn yellow. On the basis of a partial YP-mRNA sequence, we established a reverse transcriptase polymerase chain reaction (RT-PCR) assay to study the developmental expression of YP in crowd-reared males, isolated-reared males and females. In crowd-reared adult males the transcription of YP gene started from day 5 on, and reached a maximum at day 12. The effects of juvenile hormone (JH), insulin (bovine), corazonin, ecdysone and 20 0H-ecdysone (20E) on the regulation of YP-mRNA synthesis were also investigated. JH made the cuticle turn yellow and, as shown by RT-PCR, YP-mRNA was induced. The effect of 100 μg JHIII was stronger than that of 10 μg. Insulin was only effective in inducing YP-mRNA synthesis at high dose (19 μg) and after more days (18 d). Corazonin and 20E made the cuticle turn black, but no YP-mRNA synthesis was observed. Ecdysone (10 and 100 μg) showed no effect on body coloration and YP-mRNA. Thus, JH was found to be the most potent inducer among the hormones tested.

11

Genetyczne mechanizmy roznicowania gonad ssakow

58%

Brzezinska K., Kosowska B., Tokarska M., Moska M.

Acta Scientiarum Polonorum. Medicina Veterinaria

|

2004

|

tom 03

|

nr 2

3-10

12

Differentiated evolutionary conservatism and lack of polymorphism of crucial sex determination genes [SRY and SOX9] in four species of the family Canidae

58%

Nowacka-Woszuk J., Switonski M.

Folia Biologica

|

2009

|

tom 57

|

nr 3-4

171-176

13

New insights into the signaling and function of cytokinins in higher plants

58%

Ciesielska A., Ruszkowski M., Kasperska A., Femiak I., Michalski Z., Sikorski M. M.

BioTechnologia. Journal of Biotechnology Computational Biology and Bionanotechnology

|

2012

|

tom 93

|

nr 4

14

Identification and characterization of genes connected with flower morphogenesis in cucumber

58%

Pawelkowicz M., Osipowski P., Wojcieszek M., Woycicki R., Witkowicz J., Hincha D., Przybecki Z.

BioTechnologia. Journal of Biotechnology Computational Biology and Bionanotechnology

|

2012

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tom 93

|

nr 2

15

Male and female genome size in two Humulus species

58%

Grabowska-Joachimiak A., Sliwinska E., Skomra U.

Acta Biologica Cracoviensia. Series Botanica. Supplement

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2005

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tom 47

|

nr 1

16

Identification and characterization of genes connected with flower morphogenesis in cucumber

58%

Pawelkowicz M., Osipowski P., Wojcieszecucumisk M., Woycicki R., Witkowicz J., Hincha D., Przybecki Z.

BioTechnologia. Journal of Biotechnology Computational Biology and Bionanotechnology

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2012

|

tom 93

|

nr 3

17

Comparative cytogenetic mapping of three genes involved in sex determination in four species of the family Canidae

58%

Nowacka-Woszuk J., Switonski M.

Journal of Animal and Feed Sciences

|

2010

|

tom 19

|

nr 1

5-12

Advanced knowledge of the canine genome facilitates progress in studies on genome maps of other canids, including species considered also as farm animals. In this study canine BAC (Bacterial Artificial Chromosome) probes, harbouring three genes involved in sex determination (SOX9 - sex determining region Y- box 9, AMH - anti-Müllerian hormone and AR - androgen receptor), were mapped in the dog, red fox, arctic fox and Chinese raccoon dog chromosomes. Localization of these genes can be helpful in association studies focused on monogenetic intersexual disorders.

18

Cucumber [Cucumis sativus L.] molecular genetics

58%

Przybecki Z., Filipecki M. K.

Journal of Applied Genetics

|

1996

|

tom 37A

Ograniczanie wyników

DMRT1-Dmrt1, the sex determining or sex differentiating gene in Vertebrata

Genetic mechanisms underlying male sex determination in mammals

Craniometrical sex determination of wild cat Felis silvestris in Bulgaria

AFLP marker polymorphism in cucumber [Cucumis sativus L.] near-isogenic lines different in terms of sex expression

Molecular mechanisms underlying female sex determination - antagonism between female and male pathway

Artificial gynogenesis in common bream (Abramis brama (L.)) induced by cold-temperature shock

The identification of differential cDNA clones from two floral libraries in cucumber Cucumis sativus L.

Karyological studies on six bisexual weevil species [Coleoptera, Curculionidae]

Chromosome survey in seven bisexual species of weevil [Coleoptera, Curculionidae]

Developmental expression and hormonal regulation of male-specific yellow protein mRNA in adults of the desert locust, Schistocerca gregaria

Genetyczne mechanizmy roznicowania gonad ssakow

Differentiated evolutionary conservatism and lack of polymorphism of crucial sex determination genes [SRY and SOX9] in four species of the family Canidae

New insights into the signaling and function of cytokinins in higher plants

Identification and characterization of genes connected with flower morphogenesis in cucumber

Male and female genome size in two Humulus species

Identification and characterization of genes connected with flower morphogenesis in cucumber

Comparative cytogenetic mapping of three genes involved in sex determination in four species of the family Canidae

Cucumber [Cucumis sativus L.] molecular genetics