FlyBase Allele Report: Dmel\tor[4]

The stomatogastric nervous system, epiphysis, dorsopharyngeal organ and pharyngeal chordotonal organ are absent. Other sensory organs of the head develop normally. The brain hemispheres and optic lobes are fused medially.

(Schmidt-Ott et al., 1995)

Oesophagus, stomatogastric nervous system, labral nerve, epiphysis, dorsopharyngeal organ and pharyngeal monoscolopidial chordotonal organ are deleted.

(Schmidt-Ott et al., 1994)

Defective in gonad assembly when homozygous and in double mutant combination with dl.

(Warrior, 1994)

Suppresses "splice" phenotype of tor^NRE, presumably because product is appropriately positioned to block diffusion of the tor ligand, even though it cannot transduce the terminal signal.

(Casanova and Struhl, 1993)

Terminal structures are missing, abdominal segment 7 is the posterior-most point, head skeleton is collapsed.

(Doyle and Bishop, 1993)

Posterior defect is significantly suppressed, in a dose-dependent manner, by Dsor1^Su1.

(Tsuda et al., 1993)

Little or no tll expression is detected in the posterior of syncytial or cellular blastoderm embryos, at the anterior the early tll cap does not appear and an abnormal anterior tll stripe appears by the late syncytial blastoderm.

(Pignoni et al., 1992)

Dorsalized embryos: all cuticle cells along the dorsoventral axis behave like dorsal cells of the wild type embryo. zen expression pattern refines at stage 5, dpp pattern does not refine at all, twi and sna are expressed during late stages of embryogenesis. Differentiated embryos lack the labrum, head skeleton is reduced in size and all structures posterior to the seventh abdominal segment are deleted.

(Ray et al., 1991)

Embryos derived from homozygous tor⁴ females lack the median tooth of the labrum and the pharyngeal arms of the head skeleton are variably reduced. All structures posterior to abdominal segment 7 are absent.

(Sugiyama and Okada, 1990)

Eggs derived from homozygous females cellularise normally but become abnormal at gastrulation; the cephalic furrow is shifted forward, the posterior midgut is missing and the germband forms to the posterior end of the embryo. The embryos lack anterior head structures and structures posterior to segment A7 (the labral segment and telson).

(Schupbach and Wieschaus, 1989)

External Data

Linkouts

Interactions

Show genetic interaction network for Enhancers & Suppressors

Phenotypic Class

Phenotype Manifest In

Suppressed by

Statement

Reference

tor⁴ has phenotype, suppressible by Dsor1^Su12

(Lim et al., 1997)

tor⁴ has phenotype, suppressible by Dsor1^Su18

(Lim et al., 1997)

tor⁴ has phenotype, suppressible by Dsor1^Su1

(Lim et al., 1997)

tor⁴ has phenotype, suppressible by Dsor1^Su24

(Lim et al., 1997)

tor⁴ has phenotype, suppressible by Dsor1^Su4

(Lim et al., 1997)

tor⁴ has phenotype, suppressible by Dsor1^Su5

(Lim et al., 1997)

tor⁴ has phenotype, suppressible by Dsor1^Su6

(Lim et al., 1997)

tor⁴ has phenotype, suppressible by Dsor1^Su7

(Lim et al., 1997)

Additional Comments

Genetic Interactions

Statement

Reference

The posterior defect, but not the anterior defect, of embryos derived from tor⁴ females is variably suppressed by Dsor1^Su1, Dsor1^Su4, Dsor1^Su5, Dsor1^Su6, Dsor1^Su7, Dsor1^Su12, Dsor1^Su18 and Dsor1^Su24.

(Lim et al., 1997)

Xenogenetic Interactions

Statement

Reference

Complementation and Rescue Data

Comments

Images (0)

Mutant

Wild-type

Stocks (2)

Bloomington

2561

tor⁴ cn¹ bw¹/CyO, l(2)DTS513¹

Kyoto

107403

tor⁴ cn¹ bw¹/CyO, l(2)DTS513¹

Notes on Origin

Discoverer

Schupbach, Wieschaus.

Comments

Transplantation of wild-type anterior cytoplasm into the anterior end of embryos derived from homozygous tor⁴ females can rescue the mutant anterior structures. Transplantation of wild-type posterior cytoplasm into the posterior end of embryos derived from homozygous tor⁴ females can rescue the mutant posterior structures. Rescuing activity decreases with age of both donor and host. Anterior wild-type cytoplasm cannot rescue posterior defects, and vice versa. Cytoplasm transplanted from tor⁴ mutant donors has no rescuing effect. Anterior cytoplasm from bcd⁶ mutant embryos and posterior cytoplasm from nos^L7 mutant embryos can rescue both anterior and posterior defects when transplanted into the anterior or posterior end of tor⁴ mutant embryos.

(Sugiyama and Okada, 1990)

A strong allele of tor.

(Pignoni et al., 1992, Kraut and Levine, 1991)

External Crossreferences and Linkouts ( 0 )

Synonyms and Secondary IDs (5)

Reported As

Symbol Synonym

tor⁴

(Bailles et al., 2019, Kahsai and Cook, 2018, Wratten et al., 2006)

tor^PM51

(Andrioli et al., 2002, Flores-Saaib et al., 2001, Yip et al., 1997, Small et al., 1996, Wang and Coulter, 1996, Irvine and Wieschaus, 1994, Rusch and Levine, 1994, Warrior, 1994, Cockerill et al., 1993, Akiyama and Okada, 1992, Pignoni et al., 1992, Kraut and Levine, 1991, Ray et al., 1991, Strecker et al., 1991, Jack and McGinnis, 1990, Sugiyama and Okada, 1990)

tor^pm

(Beller et al., 2002, Beller et al., 2002)

torso^PM51

(Houchmandzadeh et al., 2002, Jackson and Hoffmann, 1994)

Name Synonyms

Secondary FlyBase IDs

References (59)

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