The gene plexus is referred to in FlyBase by the symbol Dmel\px (CG4444, FBgn0003175). It is a protein_coding_gene from Drosophila melanogaster. Its molecular function is unknown. There is experimental evidence that it is involved in the biological process: inter-male aggressive behavior; imaginal disc-derived wing vein morphogenesis. 58 alleles are reported. The phenotypes of these alleles are annotated with: leg; eye; wing; wing vein. It has 4 annotated transcripts and 4 annotated polypeptides. Summary of modENCODE Temporal Expression Profile: Temporal profile ranges from a peak of moderately high expression to a trough of moderate expression. Peak expression observed at stages throughout embryogenesis. Summary of FlyAtlas Anatomical Expression Data: Expression at high levels in the following post-embryonic organs or tissues: larval salivary gland. Expression at moderate levels in the following post-embryonic organs or tissues: larval central nervous system, adult crop, adult midgut, larval/adult hindgut, larval/adult Malpighian tubules, larval/adult fat body, adult salivary gland, larval trachea, adult female reproductive system, adult male accessory gland, larval/adult carcass. Comments on Affy2 ProbeSet: ProbeSet 1638412_at completely aligns to an exonic region of only a subset of 2 of the 3 FlyBase-annotated transcript isoforms of px. Gene sequence location is 2R:18381802..18449570.
User Contributed Data
Phenotypic Description from the Red Book (Lindsley
& Zimm 1992)
Gene/Allele symbols may differ
from current usage
px: plexus
px: plexus
From "Edith M. Wallace, unpublished."
Wings have network of extra veins, especially
towards tips and margins; L4 vein bent near tip. Semidominant
with some Minutes. Suppressed by S (Bedichek, 1936, DIS
4: 24); suppresses expression of ve (Thompson, 1973, DIS
50: 59). Venation effect caused by inadequate contraction of
wing during pupal stage, leaving spaces between epithelial
layers (Waddington, 1940). Vein patterns of px flies studied
in lines selected for increased or decreased expression
(Thompson, 1974).
Recent Updates
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FB2013_03
FB2013_02
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The cytological location of either the P{lacW}pxk08316 insert (58E1-58E2) or the P{lacW}pxk08134 insert (59B1-59B2) must be wrong, but this has not been resolved. (determined by in situ hybridisation) 59B1--2 (determined by in situ hybridisation)
Summary of FlyAtlas Anatomical Expression Data: Expression at high levels in the following post-embryonic organs or tissues: larval salivary gland. Expression at moderate levels in the following post-embryonic organs or tissues: larval central nervous system, adult crop, adult midgut, larval/adult hindgut, larval/adult Malpighian tubules, larval/adult fat body, adult salivary gland, larval trachea, adult female reproductive system, adult male accessory gland, larval/adult carcass.
[download data (TSV)]
Guide to FlyAtlas expression level colors
No expression (0 - 9.999)
Low expression (10 - 99.999)
Moderate expression (100 - 499.999)
High level expression (500 - 999.999)
Very high expression (>999.999)
Linear, scaled to maximum expression level
Tissue
Expression Level
Larval Central Nervous System
101.9
Larval Midgut
91.4
Larval Hindgut
176.5
Larval Malpighian Tubules
299.6
Larval Fat Body
199.9
Larval Salivary Gland
667.2
Larval Trachea
162.725
Larval Carcass
106.8
Adult Head
93.6
Adult Eye
49.4
Adult Brain
54.5
Adult Thoracic-Abdominal Ganglion
57.3
Adult Crop
180.5
Adult Midgut
198.7
Adult Hindgut
239.2
Adult Malpighian Tubules
119.2
Adult Fat Body
124.4
Adult Salivary Gland
179.8
Adult Heart
86.275
Adult VirginFemale Spermatheca
140.8
Adult InseminatedFemale Spermatheca
104.3
Adult Ovary
157.3
Adult Testis
29.9
Adult Male Accessory Gland
131.7
Adult Carcass
116.5
Expression Level Scale
None
Low
Moderate
High
Linear, scaled to Moderate expression
Tissue
Expression Level
Larval Central Nervous System
101.9
Larval Midgut
91.4
Larval Hindgut
176.5
Larval Malpighian Tubules
299.6
Larval Fat Body
199.9
Larval Salivary Gland
(667.2)
Larval Trachea
162.725
Larval Carcass
106.8
Adult Head
93.6
Adult Eye
49.4
Adult Brain
54.5
Adult Thoracic-Abdominal Ganglion
57.3
Adult Crop
180.5
Adult Midgut
198.7
Adult Hindgut
239.2
Adult Malpighian Tubules
119.2
Adult Fat Body
124.4
Adult Salivary Gland
179.8
Adult Heart
86.275
Adult VirginFemale Spermatheca
140.8
Adult InseminatedFemale Spermatheca
104.3
Adult Ovary
157.3
Adult Testis
29.9
Adult Male Accessory Gland
131.7
Adult Carcass
116.5
Expression Level Scale
None
Low
Moderate
High
Linear, scaled to High level expression
Tissue
Expression Level
Larval Central Nervous System
101.9
Larval Midgut
91.4
Larval Hindgut
176.5
Larval Malpighian Tubules
299.6
Larval Fat Body
199.9
Larval Salivary Gland
667.2
Larval Trachea
162.725
Larval Carcass
106.8
Adult Head
93.6
Adult Eye
49.4
Adult Brain
54.5
Adult Thoracic-Abdominal Ganglion
57.3
Adult Crop
180.5
Adult Midgut
198.7
Adult Hindgut
239.2
Adult Malpighian Tubules
119.2
Adult Fat Body
124.4
Adult Salivary Gland
179.8
Adult Heart
86.275
Adult VirginFemale Spermatheca
140.8
Adult InseminatedFemale Spermatheca
104.3
Adult Ovary
157.3
Adult Testis
29.9
Adult Male Accessory Gland
131.7
Adult Carcass
116.5
Expression Level Scale
None
Low
Moderate
High
Very high
Linear, scaled to Very high expression
Tissue
Expression Level
Larval Central Nervous System
101.9
Larval Midgut
91.4
Larval Hindgut
176.5
Larval Malpighian Tubules
299.6
Larval Fat Body
199.9
Larval Salivary Gland
667.2
Larval Trachea
162.725
Larval Carcass
106.8
Adult Head
93.6
Adult Eye
49.4
Adult Brain
54.5
Adult Thoracic-Abdominal Ganglion
57.3
Adult Crop
180.5
Adult Midgut
198.7
Adult Hindgut
239.2
Adult Malpighian Tubules
119.2
Adult Fat Body
124.4
Adult Salivary Gland
179.8
Adult Heart
86.275
Adult VirginFemale Spermatheca
140.8
Adult InseminatedFemale Spermatheca
104.3
Adult Ovary
157.3
Adult Testis
29.9
Adult Male Accessory Gland
131.7
Adult Carcass
116.5
Expression Level Scale
Very high
log, scaled to maximum expression level
Tissue
Expression Level
Larval Central Nervous System
101.9
Larval Midgut
91.4
Larval Hindgut
176.5
Larval Malpighian Tubules
299.6
Larval Fat Body
199.9
Larval Salivary Gland
667.2
Larval Trachea
162.725
Larval Carcass
106.8
Adult Head
93.6
Adult Eye
49.4
Adult Brain
54.5
Adult Thoracic-Abdominal Ganglion
57.3
Adult Crop
180.5
Adult Midgut
198.7
Adult Hindgut
239.2
Adult Malpighian Tubules
119.2
Adult Fat Body
124.4
Adult Salivary Gland
179.8
Adult Heart
86.275
Adult VirginFemale Spermatheca
140.8
Adult InseminatedFemale Spermatheca
104.3
Adult Ovary
157.3
Adult Testis
29.9
Adult Male Accessory Gland
131.7
Adult Carcass
116.5
Expression Level Scale
None
Low
Moderate
High
Very high
log, scaled to Moderate expression
Tissue
Expression Level
Larval Central Nervous System
101.9
Larval Midgut
91.4
Larval Hindgut
176.5
Larval Malpighian Tubules
299.6
Larval Fat Body
199.9
Larval Salivary Gland
667.2
Larval Trachea
162.725
Larval Carcass
106.8
Adult Head
93.6
Adult Eye
49.4
Adult Brain
54.5
Adult Thoracic-Abdominal Ganglion
57.3
Adult Crop
180.5
Adult Midgut
198.7
Adult Hindgut
239.2
Adult Malpighian Tubules
119.2
Adult Fat Body
124.4
Adult Salivary Gland
179.8
Adult Heart
86.275
Adult VirginFemale Spermatheca
140.8
Adult InseminatedFemale Spermatheca
104.3
Adult Ovary
157.3
Adult Testis
29.9
Adult Male Accessory Gland
131.7
Adult Carcass
116.5
Expression Level Scale
None
Low
Moderate
High
log, scaled to High level expression
Tissue
Expression Level
Larval Central Nervous System
101.9
Larval Midgut
91.4
Larval Hindgut
176.5
Larval Malpighian Tubules
299.6
Larval Fat Body
199.9
Larval Salivary Gland
667.2
Larval Trachea
162.725
Larval Carcass
106.8
Adult Head
93.6
Adult Eye
49.4
Adult Brain
54.5
Adult Thoracic-Abdominal Ganglion
57.3
Adult Crop
180.5
Adult Midgut
198.7
Adult Hindgut
239.2
Adult Malpighian Tubules
119.2
Adult Fat Body
124.4
Adult Salivary Gland
179.8
Adult Heart
86.275
Adult VirginFemale Spermatheca
140.8
Adult InseminatedFemale Spermatheca
104.3
Adult Ovary
157.3
Adult Testis
29.9
Adult Male Accessory Gland
131.7
Adult Carcass
116.5
Expression Level Scale
None
Low
Moderate
High
Very high
log, scaled to Very high expression
Tissue
Expression Level
Larval Central Nervous System
101.9
Larval Midgut
91.4
Larval Hindgut
176.5
Larval Malpighian Tubules
299.6
Larval Fat Body
199.9
Larval Salivary Gland
667.2
Larval Trachea
162.725
Larval Carcass
106.8
Adult Head
93.6
Adult Eye
49.4
Adult Brain
54.5
Adult Thoracic-Abdominal Ganglion
57.3
Adult Crop
180.5
Adult Midgut
198.7
Adult Hindgut
239.2
Adult Malpighian Tubules
119.2
Adult Fat Body
124.4
Adult Salivary Gland
179.8
Adult Heart
86.275
Adult VirginFemale Spermatheca
140.8
Adult InseminatedFemale Spermatheca
104.3
Adult Ovary
157.3
Adult Testis
29.9
Adult Male Accessory Gland
131.7
Adult Carcass
116.5
Expression Level Scale
None
Low
Moderate
High
Very high
Heatmap
Tissue
Expression Level
Larval Central Nervous System
Larval Midgut
Larval Hindgut
Larval Malpighian Tubules
Larval Fat Body
Larval Salivary Gland
Larval Trachea
Larval Carcass
Adult Head
Adult Eye
Adult Brain
Adult Thoracic-Abdominal Ganglion
Adult Crop
Adult Midgut
Adult Hindgut
Adult Malpighian Tubules
Adult Fat Body
Adult Salivary Gland
Adult Heart
Adult VirginFemale Spermatheca
Adult InseminatedFemale Spermatheca
Adult Ovary
Adult Testis
Adult Male Accessory Gland
Adult Carcass
FlyAtlas Organ/Tissue Expression, larval vs. adult
Summary of modENCODE Temporal Expression Profile: Temporal profile ranges from a peak of moderately high expression to a trough of moderate expression. Peak expression observed at stages throughout embryogenesis.
[download data (TSV)]
Please Note FlyBase no
longer curates genomic clone accessions so this list
may not be complete
cDNA Clones ( 82 )
Please Note
This section lists
cDNAs and ESTs that fall within the genomic extent
of the gene model, which may include cDNAs and ESTs
of genes within introns, or of overlapping genes.
Please see GBrowse for alignment of the cDNAs and ESTs
to the gene model.
The px gene product may regulate transcription of vein and intervein genes by tethering transcriptional regulators to specific locations in the nucleus.
Mutations in px cause extra longitudinal or transverse veins with plexated vein phenotypes. Px, px, net, dsr and emc belong to the same synergistic group and act synergistically against kn, fu and shf.
Px, net, dsr, px and emc loci belong to the plexus phenotypic group within the 'excess-of-vein' mutant class. Extra veins occur parallel to and between normal veins that connect to each other by crossveins, forming plexi. Plexi are distal. Proximal regions shift to the margin leaving a central area devoid of veins. Sensilla and chaetae appear shifted. Combinations of mutations produce superadditive phenotypes.
Transcriptional Dynamics Elicited by a Short Pulse of Notch Activation Involves Feed-Forward Regulation by E(spl)/Hes Genes. [FBrf0220474]
Arbuthnott and Rundle, 2012, Evolution 66(7): 2127--2137
Sexual selection is ineffectual or inhibits the purging of deleterious mutations in Drosophila melanogaster. [FBrf0218756]
Maclellan et al., 2012, Heredity 108(3): 203--210
Dietary stress does not strengthen selection against single deleterious mutations in Drosophila melanogaster. [FBrf0217530]
Weber et al., 2012, PLoS ONE 7(4): e34745
Genome-Wide Association Analysis of Oxidative Stress Resistance in Drosophila melanogaster. [FBrf0218073]
Turner et al., 2011, PLoS Genet. 7(3): e1001336
Population-Based Resequencing of Experimentally Evolved Populations Reveals the Genetic Basis of Body Size Variation in Drosophila melanogaster. [FBrf0213327]