Deletion that removes all of the bam protein except the 31 most C-terminal amino acid residues. Generated by imprecise excision of P{hsneo}bam1.
female sterile (with bamΔ86)
neoplasia | adult stage | female (with bamz3-2884)
neoplasia | adult stage | female (with bamΔ86)
ovary (with bamz3-2884)
bamΔ59/bamΔ86 adult females are completely sterile display tumorigenic phenotype in ovaries ('bag of marbles' phenotype). The full female sterility is not improved upon Wolbachia pipientis infection.
bamBW/bamΔ59 adult females are weakly fertile with a mix of tumorous and normal egg chambers, the ovarian phenotype is significantly less severe in flies infected with Wolbachia pipientis compared to those cured of the infection and their fertility is also highly increased.
bamz3-2884/bamΔ59 has female semi-sterile phenotype, enhanceable by bgcn[+]/bgcn1
bamz3-2884/bamΔ59 has neoplasia | adult stage | female phenotype, enhanceable by bgcn[+]/bgcn1
bamΔ86/bamΔ59 has female sterile phenotype, suppressible | partially by Dsim\bambam.Venus
bamz3-2884/bamΔ59, bgcn[+]/bgcn1 has female sterile phenotype, suppressible by Dsim\bambam.Venus
bamz3-2884/bamΔ59 has ovary phenotype, enhanceable by bgcn[+]/bgcn1
Dsim\bambam.Venus, bamΔ86/bamΔ59 has ovary phenotype, non-enhanceable by bgcn[+]/bgcn1
Dsim\bambam.Venus, bamΔ86/bamΔ59 has ovary phenotype
Dsim\bambam.Venus, bamΔ86/bamΔ59 has female germline stem cell phenotype
Expression of Dsim\bambam.T:Avic\GFP-YFP.Venus partially restores fertility of the otherwise sterile bamΔ59/bamΔ86 females. The ovaries of the rescue females show multiple morphological defects that accumulate with age (loss of germline stem cells, improper number of cyst divisions, mitotic synchrony defects). However, when two copies of the Dsim\bambam.T:Avic\GFP-YFP.Venus transgene are used, the fertility of the rescue females is reduced (compared to one copy rescue) and they become virtually sterile by day 15. They also show accelerated loss of the germline stem cells from the ovaries and often lack them or any germline cells altogether. These effects are alleviated even by a single copy of endogenous wild-type bam. The partial fertility of bamΔ59/bamΔ86;Dsim\bambam.T:Avic\GFP-YFP.Venus xenogenetic rescue flies is also improved by Wolbachia pipientis infection.
The ovarian defects observed in bamΔ59/bamΔ86;Dsim\bambam.T:Avic\GFP-YFP.Venus xenogenetic rescue females cannot be exacerbated by combination with a single copy of bgcn1. Additionally, combination with Dsim\bambam.T:Avic\GFP-YFP.Venus suppresses the tumorous ovary phenotype characteristic for bamBW/bamΔ59;bgcn1/+ double mutant flies.
bamΔ86/bamΔ59 is rescued by bam4.1.Venus
Expression of bam4.1.T:Avic\GFP-YFP.Venus restores fertility of the otherwise sterile bamΔ59/bamΔ86 females and bamBG/bamΔ86 males, although under sperm exhaustion conditions the rescue is not complete. Ovaries of the rescue females have wild-type morphology.
The fertility of bamΔ59/bamΔ86;bam4.1.T:Avic\GFP-YFP.Venus rescue flies is neither increased nor diminished by Wolbachia pipientis infection.