P{PZ} insertion in the first intron.
male semi-sterile (with Df(3R)crb87-5), with jarH-GT.Hsp83.GFP
male sterile (with Df(3R)crb87-5), with jarmWKA.Hsp83.GFP
investment cone (with Df(3R)crb87-5), with jarHNPMD.Hsp83.GFP
investment cone (with Df(3R)crb87-5), with jarmLWY.Hsp83.GFP
investment cone (with Df(3R)crb87-5), with jarmRRL.Hsp83.GFP
investment cone (with Df(3R)crb87-5), with jarmWKA.Hsp83.GFP
jar1/Df(3R)P3-4-7 transheterozygotes are male sterile.
When jarmLWY.Hsp83.T:Avic\GFP is expressed in jar1/Df(3R)crb87-5 mutant animals, the shape of actin cones appear abnormal. Expression of jarmLWY.Hsp83.T:Avic\GFP fails to rescue the fertility defects of jar1/Df(3R)crb87-5 animals.
When jarmWKA.Hsp83.T:Avic\GFP is expressed in jar1/Df(3R)crb87-5 mutant animals, the shape of actin cones appear abnormal. Expression of jarmWKA.Hsp83.T:Avic\GFP fails to rescue the fertility defects of jar1/Df(3R)crb87-5 animals.
Actin cone shapes in jar1/Df(3R)crb87-5 mutants expressing jarmRRL.Hsp83.T:Avic\GFP appear different from that of wild-type.
Actin cone shapes in jar1/Df(3R)crb87-5 mutants expressing jarDel-N-Gtail.Hsp83.T:Avic\GFP appear different from that of wild-type.
Actin cone shapes in jar1/Df(3R)crb87-5 mutants expressing jarHNPMD.Hsp83.T:Avic\GFP appear different from that of wild-type.
jar1/Df(3R)crb87-5 spermatid cysts have less actin in the actin cones making them narrower than in wild type. The actin cones travel asynchronously down the axoneme, arresting movement partway along the cyst.
Individualisation does not occur correctly in jar1/Df(3R)crb87-5 mutants. Some sperm heads are individualised but many are packaged into a single membrane. Many of the sperm heads that have individualised have not undergone cytoplasmic exclusion.
jar1/Df(3R)crb87-5 seminal vesicles at 1-2 days after eclosion contain very few sperm compared to wild type. A greater number of sperm are present in the seminal vesicles a week after eclosion.
When jar1\Df(3R)crb87-5 males are mated with wild type females no sperm is found in the female storage organs.
Fully elongated jar1 spermatid cysts prior to individualisation are identical in length and morphology to wild type. Following individualisation, jar1 cysts appears thin and elongated in comparison with the round cysts seen in wild type.
Unlike in wild type, the 64 spermatids in jar1 mutants do not undergo individualisation simultaneously. jar1 cysts are seen that contain both large fused sperm tails and individualised thin tails.
Movement of jar1 cystic bulges begins at a similar speed to wild type but then slow downs and comes to a stop before reaching the end of the cyst. The distance travelled varies between mutant cysts.
As in wild type, jar1 mutant sperm tails are surrounded by cytoplasm prior to individualisation. However individualisation does not occur correctly in many jar1 mutants and several sperm heads are often found within one membrane. The individualised sperm tails that are present in jar1 mutants fail to undergo the cytoplasmic exclusion that is seen in wild type. The morphology of the axoneme and mitochondrial derivative appears normal in jar1 mutants.
Before individualisation the quantity of actin in jar1 cones is similar to wild type. Following the onset of cystic bulge movement the width and length of the actin cones become more variable and uncoordinated in jar1 mutants compared to wild type and the cones are not aligned in the middle of the cystic bulge. The jar1 mutant cones fail to accumulate actin during movement and instead the actin density and content are both reduced, resulting in actin cones that are smaller than in wild type with a decreased diameter at the front. However, the basic organisation of the jar1 cones is normal and no defects in actin filament orientation are seen. Unlike in wild type, cytoplasmic organelles are present in the cone region of jar1 mutants.
The average speed of cystic bulge movement is reduced in jar1/Df(3R)crb87-5 mutants compared to wild type.
In jar1 mutants, individualization complexes form within elongated spermatid cysts and begin to migrate, but rapidly fall apart.
In jar1 flies, caspase activity can only be detected in spermatid cysts once they are mature enough to contain needle-shaped and condensed nuclei.
Homozygous testes show no obvious differences from wild-type testes. Sperm show defects in motility, but do not show any gross morphological defects. Organisation of the individualisation complex (IC) is abnormal in homozygous testes. Although actin assembles around the nuclei, the individual cones are not aligned properly. Fewer ICs per testis are seen compared to wild type.
Males are semi-sterile.
jar1/Df(3R)crb87-5 has male sterile phenotype, suppressible | partially by Sscr\MYO6Hsp83.GFP
jar1/Df(3R)crb87-5 has investment cone phenotype, suppressible by Sscr\MYO6Hsp83.GFP
Expression of Sscr\MYO6Hsp83.T:Avic\GFP rescues cone actin content and shape of jar1/Df(3R)crb87-5 mutants during spermatogenesis. However, fertility is only partially rescued.
jar1/Df(3R)crb87-5 is rescued by jarHsp83.GFP
jar1/Df(3R)crb87-5 is rescued by jarHsp83.GFP
jar1/Df(3R)crb87-5 is rescued by jarDel-Ins1.Hsp83.GFP
jar1/Df(3R)crb87-5 is rescued by jarHsp83.GFP
jar1/Df(3R)crb87-5 is partially rescued by jarH-GT.Hsp83.GFP
jar1 is partially rescued by jarUAS.GFP/Scer\GAL4bab1-Pgal4-2
jar1/Df(3R)crb87-5 is partially rescued by jarGCN4.Hsp83.GFP
jar1/Df(3R)crb87-5 is partially rescued by jarH-GT.Hsp83.GFP
jar1/Df(3R)crb87-5 is not rescued by jarDel-N-Gtail.Hsp83.GFP
jar1/Df(3R)crb87-5 is not rescued by jarmRRL.Hsp83.GFP
jar1/Df(3R)crb87-5 is not rescued by jarmWKA.Hsp83.GFP
jar1/Df(3R)crb87-5 is not rescued by jarmLWY.Hsp83.GFP
jar1/Df(3R)crb87-5 is not rescued by jarHNPMD.Hsp83.GFP
jar1/Df(3R)crb87-5 is not rescued by jarH-GT.Hsp83.GFP
jar1/Df(3R)crb87-5 is not rescued by jarG-tail.Hsp83.GFP
When jarmLWY.Hsp83.T:Avic\GFP is expressed in jar1/Df(3R)crb87-5 mutant animals, the shape of actin cones appear abnormal. Expression of jarmLWY.Hsp83.T:Avic\GFP fails to rescue the fertility defects of jar1/Df(3R)crb87-5 animals.
When jarmWKA.Hsp83.T:Avic\GFP is expressed in jar1/Df(3R)crb87-5 mutant animals, the shape of actin cones appear abnormal. Expression of jarmWKA.Hsp83.T:Avic\GFP fails to rescue the fertility defects of jar1/Df(3R)crb87-5 animals.
The actin cone structure of jar1/Df(3R)crb87-5 mutants is significantly rescued by jarH-GT.Hsp83.T:Avic\GFP. The fertility defects of jar1/Df(3R)crb87-5 mutants is only partially rescued by jarH-GT.Hsp83.T:Avic\GFP.
Actin cone shapes in jar1/Df(3R)crb87-5 mutants expressing jarmRRL.Hsp83.T:Avic\GFP appear different from that of wild-type.
Actin cone shapes in jar1/Df(3R)crb87-5 mutants expressing jarDel-N-Gtail.Hsp83.T:Avic\GFP appear different from that of wild-type.
Actin cone shapes in jar1/Df(3R)crb87-5 mutants expressing jarHNPMD.Hsp83.T:Avic\GFP appear different from that of wild-type.
Expression of jarHsp83.T:Avic\GFP rescues the fertility defects of jar1/Df(3R)crb87-5. The actin cone structure of jar1/Df(3R)crb87-5 mutants is significantly rescued by jarHsp83.T:Avic\GFP.
Rescue of the fertility defects of jar1/Df(3R)crb87-5 by expression of jarScer\UAS.T:Avic\GFP via Scer\GAL4bab1-Pgal4-2 is only partial.
Expression of jarHsp83.T:Avic\GFP rescues the the actin cone morphology and movement defects seen in jar1/Df(3R)crb87-5. All sperm tails are correctly individualised and cytoplasm and organelles are removed as in wild type.
Expression of jarHsp83.T:Avic\GFP rescues the fertility defects seen in jar1/Df(3R)crb87-5 mutants.
Expression of jarHsp83.T:Avic\GFP rescues the empty seminal vesicle phenotype seen in jar1/Df(3R)crb87-5.
Expression of jarHsp83.T:Avic\GFP rescues the defects in the transfer of sperm to female storage organs that are seen when jar1/Df(3R)crb87-5 males are mated with wild type females.
Expression of jarHsp83.T:Avic\GFP,T:Scer\GCN4 partially rescues the actin cone morphology and movement defects seen in jar1/Df(3R)crb87-5.
Expression of jarHsp83.T:Avic\GFP,T:Scer\GCN4 partially rescues the sperm individualisation defects seen in jar1/Df(3R)crb87-5. Many sperm tails fail to individualise and in those that have, many have not completed cytoplasmic exclusion.
Expression of jarHsp83.T:Avic\GFP,T:Scer\GCN4 partially rescues the fertility defects seen in jar1/Df(3R)crb87-5 mutants.
Expression of jarHsp83.T:Avic\GFP,T:Scer\GCN4 partially rescues the empty seminal vesicle phenotype seen in jar1/Df(3R)crb87-5, although many seminal vesicles containing very few sperm are still present.
Expression of jarH-GT.Hsp83.T:Avic\GFP partially rescues actin cone defects seen in jar1/Df(3R)crb87-5. The cones contain more actin, the shape of the cones is similar to wild type and synchronous cone movement occurs. A more significant rescue is seen when four copies of the transgene are expressed compared to two.
Expression of jarH-GT.Hsp83.T:Avic\GFP partially rescues the sperm individualisation phenotype seen in jar1/Df(3R)crb87-5. The majority of sperm tails are correctly individualised and cytoplasm and organelles are removed as in wild type.
Expression of jarH-GT.Hsp83.T:Avic\GFP partially rescues the fertility defects seen in jar1/Df(3R)crb87-5 mutants.
Expression of jarH-GT.Hsp83.T:Avic\GFP partially rescues the empty seminal vesicle phenotype seen in jar1/Df(3R)crb87-5. Rescue is dose dependent; the phenotype is more significantly improved when four copies of the transgene are expressed rather than two.
Expression of jarH-GT.Hsp83.T:Avic\GFP fails to rescues the defects in the transfer of sperm to female storage organs that are seen when jar1/Df(3R)crb87-5 males are mated with wild type females.
Expression of jarDel-Ins1.Hsp83.T:Avic\GFP rescues the actin cone morphology and movement defects seen in jar1/Df(3R)crb87-5 mutants.
Expression of jarDel-Ins1.Hsp83.T:Avic\GFP rescues the fertility defects seen in jar1/Df(3R)crb87-5.
Expression of jarHsp83.T:Avic\GFP restores the defects in fertility and cystic bulge movement seen in jar1/Df(3R)crb87-5 mutants.
Expression of jarG-tail.Hsp83.T:Avic\GFP fails to rescue the fertility defects seen in jar1/Df(3R)crb87-5 mutants.
A. Spradling.
Excision of the P{PZ} element indicates that it is responsible for the male sterile phenotype of jar1.