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Journal articles on the topic 'Spermatogenesis. Drosophila melanogaster'

Author: Grafiati

Published: 4 June 2021

Last updated: 6 February 2022

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1

Demarco, Rafael S., Åsmund H. Eikenes, Kaisa Haglund, and D. Leanne Jones. "Investigating spermatogenesis in Drosophila melanogaster." Methods 68, no. 1 (2014): 218–27. http://dx.doi.org/10.1016/j.ymeth.2014.04.020.

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2

Griffin-Shea, R., I. Paintrand, A. Guichard, E. Bergeret, and M. Cazemajor. "Rotundraccap function in spermatogenesis in drosophila melanogaster." Biology of the Cell 91, no. 7 (1999): 554. http://dx.doi.org/10.1016/s0248-4900(99)90260-5.

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3

Lindsley, Dan L., John Roote, and James A. Kennison. "Anent the Genomics of Spermatogenesis in Drosophila melanogaster." PLoS ONE 8, no. 2 (2013): e55915. http://dx.doi.org/10.1371/journal.pone.0055915.

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4

Vibranovski, Maria D., Domitille S. Chalopin, Hedibert F. Lopes, Manyuan Long, and Timothy L. Karr. "Direct Evidence for Postmeiotic Transcription During Drosophila melanogaster Spermatogenesis." Genetics 186, no. 1 (2010): 431–33. http://dx.doi.org/10.1534/genetics.110.118919.

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5

KVELLAND, INGERID. "RADIOSENSITIVITY IN DIFFERENT STAGES OF SPERMATOGENESIS IN DROSOPHILA MELANOGASTER." Hereditas 48, no. 1-2 (2009): 220–42. http://dx.doi.org/10.1111/j.1601-5223.1962.tb01809.x.

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6

Pivovarova, Oksana V., and Lubov A. Vasilyeva. "Stress induction of retrotransposons mdgl at the different spermatogenesis stages of Drosophila melanogasters males." Ecological genetics 2, no. 3 (2004): 8–13. http://dx.doi.org/10.17816/ecogen238-13.

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The induction of transposition of ТЕ mdgl has been analysed at the different stages of spermatogenesis in isogenic lines of males № 2-2 и № 16 of Drosophila melanogaster exposed to Cold Shock (CSh) and Heat Shock (HSh). We found that in response to CSh and HSh multiple transpositions of mobile elements mdgl occur in each stage of spermatogenesis. It was found that meiosis was the most sensitive stage to CSh. Exposure to HSh caused the highest rate of transpositions in the meiosis and spermatogenesis stages

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7

Reina, Jose, Marco Gottardo, Maria G. Riparbelli, Salud Llamazares, Giuliano Callaini, and Cayetano Gonzalez. "Centrobin is essential for C-tubule assembly and flagellum development in Drosophila melanogaster spermatogenesis." Journal of Cell Biology 217, no. 7 (2018): 2365–72. http://dx.doi.org/10.1083/jcb.201801032.

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Centrobin homologues identified in different species localize on daughter centrioles. In Drosophila melanogaster sensory neurons, Centrobin (referred to as CNB in Drosophila) inhibits basal body function. These data open the question of CNB’s role in spermatocytes, where daughter and mother centrioles become basal bodies. In this study, we report that in these cells, CNB localizes equally to mother and daughter centrioles and is essential for C-tubules to attain the right position and remain attached to B-tubules as well as for centrioles to grow in length. CNB appears to be dispensable for me

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8

Nerusheva, O. O., N. V. Dorogova, N. V. Gubanova, and L. V. Omel’yanchuk. "The role of Gilgamesh protein kinase in Drosophila melanogaster spermatogenesis." Russian Journal of Genetics 44, no. 9 (2008): 1049–53. http://dx.doi.org/10.1134/s1022795408090068.

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9

Ma, J., E. Katz, and J. M. Belote. "Expression of proteasome subunit isoforms during spermatogenesis in Drosophila melanogaster." Insect Molecular Biology 11, no. 6 (2002): 627–39. http://dx.doi.org/10.1046/j.1365-2583.2002.00374.x.

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10

Fang, Yang, Qiong Zong, Zhen He, Chen Liu, and Yu‐Feng Wang. "Knockdown of RpL36 in testes impairs spermatogenesis in Drosophila melanogaster." Journal of Experimental Zoology Part B: Molecular and Developmental Evolution 336, no. 5 (2021): 417–30. http://dx.doi.org/10.1002/jez.b.23040.

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11

Morciano, Patrizia, Maria Laura Di Giorgio, Liliana Tullo, and Giovanni Cenci. "The Organization of the Golgi Structures during Drosophila Male Meiosis Requires the Citrate Lyase ATPCL." International Journal of Molecular Sciences 22, no. 11 (2021): 5745. http://dx.doi.org/10.3390/ijms22115745.

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During spermatogenesis, the Golgi apparatus serves important roles including the formation of the acrosome, which is a sperm-specific organelle essential for fertilization. We have previously demonstrated that D. melanogaster ATP-dependent Citrate Lyase (ATPCL) is required for spindle organization, cytokinesis, and fusome assembly during male meiosis, mainly due to is activity on fatty acid biosynthesis. Here, we show that depletion of DmATPCL also affects the organization of acrosome and suggest a role for this enzyme in the assembly of Golgi-derived structures during Drosophila spermatogenes

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12

Bolobolova, E. U., O. S. Yudina, and N. V. Dorogova. "Drosophila tumor suppressor merlin is essential for mitochondria morphogenesis during spermatogenesis in Drosophila melanogaster." Cell and Tissue Biology 5, no. 2 (2011): 136–43. http://dx.doi.org/10.1134/s1990519x11020040.

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13

Castrillon, D. H., P. Gönczy, S. Alexander, et al. "Toward a molecular genetic analysis of spermatogenesis in Drosophila melanogaster: characterization of male-sterile mutants generated by single P element mutagenesis." Genetics 135, no. 2 (1993): 489–505. http://dx.doi.org/10.1093/genetics/135.2.489.

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Abstract We describe 83 recessive autosomal male-sterile mutations, generated by single P element mutagenesis in Drosophila melanogaster. Each mutation has been localized to a lettered subdivision of the polytene map. Reversion analyses, as well as complementation tests using available chromosomal deficiencies, indicate that the insertions are responsible for the mutant phenotypes. These mutations represent 63 complementation groups, 58 of which are required for spermatogenesis. Phenotypes of the spermatogenesis mutants were analyzed by light microscopy. Mutations in 12 loci affect germline pr

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14

Bergeret, Evelyne, Isabelle Pignot-Paintrand, Annabel Guichard, et al. "RotundRacGAP Functions with Ras during Spermatogenesis and Retinal Differentiation in Drosophila melanogaster." Molecular and Cellular Biology 21, no. 18 (2001): 6280–91. http://dx.doi.org/10.1128/mcb.21.18.6280-6291.2001.

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ABSTRACT Our analysis of rotund (rn) null mutations in Drosophila melanogaster revealed that deletion of the rn locus affects both spermatid and retinal differentiation. In the male reproductive system, the absence of RnRacGAP induced small testes, empty seminal vesicles, short testicular cysts, reduced amounts of interspermatid membrane, the absence of individualization complexes, and incomplete mitochondrial condensation. Flagellar growth continued within the short rn null cysts to produce large bulbous terminations of intertwined mature flagella. Organization of the retina was also severely

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15

Xu, Shuwa, Nathaniel Hafer, Blessing Agunwamba, and Paul Schedl. "The CPEB Protein Orb2 Has Multiple Functions during Spermatogenesis in Drosophila melanogaster." PLoS Genetics 8, no. 11 (2012): e1003079. http://dx.doi.org/10.1371/journal.pgen.1003079.

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16

Rastelli, Luca, and Mitzi I. Kuroda. "An analysis of maleless and histone H4 acetylation in Drosophila melanogaster spermatogenesis." Mechanisms of Development 71, no. 1-2 (1998): 107–17. http://dx.doi.org/10.1016/s0925-4773(98)00009-4.

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17

Kovács, Levente, Ágota Nagy, Margit Pál, and Peter Deák. "Usp14 is required for spermatogenesis and ubiquitin stress responses in Drosophila melanogaster." Journal of Cell Science 133, no. 2 (2020): jcs237511. http://dx.doi.org/10.1242/jcs.237511.

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18

Noguchi, T. "A role for actin dynamics in individualization during spermatogenesis in Drosophila melanogaster." Development 130, no. 9 (2003): 1805–16. http://dx.doi.org/10.1242/dev.00406.

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19

Sartain, C. V., J. Cui, R. P. Meisel, and M. F. Wolfner. "The poly(A) polymerase GLD2 is required for spermatogenesis in Drosophila melanogaster." Development 138, no. 8 (2011): 1619–29. http://dx.doi.org/10.1242/dev.059618.

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20

Tirronen, M., T. I. Heino, and Ch Roos. "Effect of otu mutations on male fertility and spermatogenesis in Drosophila melanogaster." Roux's Archives of Developmental Biology 202, no. 5 (1993): 306–11. http://dx.doi.org/10.1007/bf00363219.

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21

Yang, Jun, Larry Porter, and John Rawls. "Expression of the dihydroorotate dehydrogenase gene, dhod, during spermatogenesis in Drosophila melanogaster." Molecular and General Genetics MGG 246, no. 3 (1995): 334–41. http://dx.doi.org/10.1007/bf00288606.

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22

Fabrizio, J. J., G. Hime, S. K. Lemmon, and C. Bazinet. "Genetic dissection of sperm individualization in Drosophila melanogaster." Development 125, no. 10 (1998): 1833–43. http://dx.doi.org/10.1242/dev.125.10.1833.

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The morphogenesis of spermatids generally takes place within a syncytium, in which all spermatid nuclei descended from a primary spermatocyte remain connected via an extensive network of cytoplasmic bridges. A late step in sperm maturation therefore requires the physical resolution of the syncytium, or cyst, into individual cells, a process sometimes referred to as sperm individualization. Despite the identification of specialized machinery involved in the individualization of Drosophila spermatids (Tokuyasu, K. T., Peacock, W. J. and Hardy, R. W. (1972) Z. Zellforsch 124, 479–506), and of man

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23

Li, Kaijun, Eugene Yujun Xu, Jeffrey K. Cecil, F. Rudolf Turner, Timothy L. Megraw, and Thomas C. Kaufman. "Drosophila Centrosomin Protein is Required for Male Meiosis and Assembly of the Flagellar Axoneme." Journal of Cell Biology 141, no. 2 (1998): 455–67. http://dx.doi.org/10.1083/jcb.141.2.455.

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Centrosomes and microtubules play crucial roles during cell division and differentiation. Spermatogenesis is a useful system for studying centrosomal function since it involves both mitosis and meiosis, and also transformation of the centriole into the sperm basal body. Centrosomin is a protein localized to the mitotic centrosomes in Drosophila melanogaster. We have found a novel isoform of centrosomin expressed during spermatogenesis. Additionally, an anticentrosomin antibody labels both the mitotic and meiotic centrosomes as well as the basal body. Mutational analysis shows that centrosomin

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24

THOMAS, Josie E., Caroline M. RYLETT, Ahmet CARHAN, et al. "Drosophila melanogaster NEP2 is a new soluble member of the neprilysin family of endopeptidases with implications for reproduction and renal function." Biochemical Journal 386, no. 2 (2005): 357–66. http://dx.doi.org/10.1042/bj20041753.

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The mammalian neprilysin (NEP) family members are typically type II membrane endopeptidases responsible for the activation/inactivation of neuropeptides and peptide hormones. Differences in substrate specificity and subcellular localization of the seven mammalian NEPs contribute to their functional diversity. The sequencing of the Drosophila melanogaster genome has revealed a large expansion of this gene family, resulting in over 20 fly NEP-like genes, suggesting even greater diversity in structure and function than seen in mammals. We now report that one of these genes (Nep2) codes for a secr

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25

Chandler, D., M. E. McGuffin, J. Piskur, J. Yao, B. S. Baker, and W. Mattox. "Evolutionary conservation of regulatory strategies for the sex determination factor transformer-2." Molecular and Cellular Biology 17, no. 5 (1997): 2908–19. http://dx.doi.org/10.1128/mcb.17.5.2908.

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Sex determination in Drosophila melanogaster is regulated by a cascade of splicing factors which direct the sex-specific expression of gene products needed for male and female differentiation. The splicing factor TRA-2 affects sex-specific splicing of multiple pre-mRNAs involved in sexual differentiation. The tra-2 gene itself expresses a complex set of mRNAs generated through alternative processing that collectively encode three distinct protein isoforms. The expression of these isoforms differs in the soma and germ line. In the male germ line the ratio of two isoforms present is governed by

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26

Di Giorgio, Maria Laura, Patrizia Morciano, Elisabetta Bucciarelli, et al. "The Drosophila Citrate Lyase Is Required for Cell Division during Spermatogenesis." Cells 9, no. 1 (2020): 206. http://dx.doi.org/10.3390/cells9010206.

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The Drosophila melanogaster DmATPCL gene encodes for the human ATP Citrate Lyase (ACL) ortholog, a metabolic enzyme that from citrate generates glucose-derived Acetyl-CoA, which fuels central biochemical reactions such as the synthesis of fatty acids, cholesterol and acetylcholine, and the acetylation of proteins and histones. We had previously reported that, although loss of Drosophila ATPCL reduced levels of Acetyl-CoA, unlike its human counterpart, it does not affect global histone acetylation and gene expression, suggesting that its role in histone acetylation is either partially redundant

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27

Siddall, N. A., and G. R. Hime. "A Drosophila toolkit for defining gene function in spermatogenesis." Reproduction 153, no. 4 (2017): R121—R132. http://dx.doi.org/10.1530/rep-16-0347.

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Expression profiling and genomic sequencing methods enable the accumulation of vast quantities of data that relate to the expression of genes during the maturation of male germ cells from primordial germ cells to spermatozoa and potential mutations that underlie male infertility. However, the determination of gene function in specific aspects of spermatogenesis or linking abnormal gene function with infertility remain rate limiting, as even in an era of CRISPR analysis of gene function in mammalian models, this still requires considerable resources and time. Comparative developmental biology s

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28

Gonczy, P., S. Viswanathan, and S. DiNardo. "Probing spermatogenesis in Drosophila with P-element enhancer detectors." Development 114, no. 1 (1992): 89–98. http://dx.doi.org/10.1242/dev.114.1.89.

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Formation of motile sperm in Drosophila melanogaster requires the coordination of processes such as stem cell division, mitotic and meiotic control and structural reorganization of a cell. Proper execution of spermatogenesis entails the differentiation of cells derived from two distinct embryonic lineages, the germ line and the somatic mesoderm. Through an analysis of homozygous viable and fertile enhancer detector lines, we have identified molecular markers for the different cell types present in testes. Some lines label germ cells or somatic cyst cells in a stage-specific manner during their

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29

Cheng, C. Yan, and Dolores D. Mruk. "The biology of spermatogenesis: the past, present and future." Philosophical Transactions of the Royal Society B: Biological Sciences 365, no. 1546 (2010): 1459–63. http://dx.doi.org/10.1098/rstb.2010.0024.

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The physiological function of spermatogenesis in Caenorhabditis elegans , Drosophila melanogaster and mammals is to produce spermatozoa (1n, haploid) that contain only half of the genetic material of spermatogonia (2n, diploid). This half number of chromosomes from a spermatozoon will then be reconstituted to become a diploid cell upon fertilization with an egg, which is also haploid. Thus, genetic information from two parental individuals can be passed onto their offspring. Spermatogenesis takes place in the seminiferous epithelium of the seminiferous tubule, the functional unit of the mammal

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Herrmann, Siegrun, Isabel Amorim, and Claudio E. Sunkel. "The POLO kinase is required at multiple stages during spermatogenesis in Drosophila melanogaster." Chromosoma 107, no. 6-7 (1998): 440–51. http://dx.doi.org/10.1007/pl00013778.

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31

Mageeney, Catherine M., and Vassie C. Ware. "Specialized eRpL22 paralogue-specific ribosomes regulate specific mRNA translation in spermatogenesis in Drosophila melanogaster." Molecular Biology of the Cell 30, no. 17 (2019): 2240–53. http://dx.doi.org/10.1091/mbc.e19-02-0086.

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The functional significance of ribosome heterogeneity in development and differentiation is relatively unexplored. We present the first in vivo evidence of ribosome heterogeneity playing a role in specific mRNA translation in a multicellular eukaryote. Eukaryotic-specific ribosomal protein paralogues eRpL22 and eRpL22-like are essential in development and required for sperm maturation and fertility in Drosophila. eRpL22 and eRpL22-like roles in spermatogenesis are not completely interchangeable. Flies depleted of eRpL22 and rescued by eRpL22-like overexpression have reduced fertility, confirmi

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32

Michaud, S., R. Marin, J. T. Westwood, and R. M. Tanguay. "Cell-specific expression and heat-shock induction of Hsps during spermatogenesis in Drosophila melanogaster." Journal of Cell Science 110, no. 17 (1997): 1989–97. http://dx.doi.org/10.1242/jcs.110.17.1989.

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The developmental and heat-shock-induced expression of two small heat-shock proteins (Hsp23 and Hsp27) was investigated during spermatogenesis in Drosophila melanogaster. Both of these Hsps were expressed in unstressed and stressed male gonads as shown by immunoblotting. Immunostaining of whole-mount organs and thin sections of testes showed that an anti-Hsp23 antibody specifically decorated cells of the somatic lineage, such as the cyst cells and the epithelial cells of the testis and of the seminal vesicle. Hsp27 was expressed in some somatic cells (cyst cells and epithelial cells of the acc

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33

Fabbretti, Fabiana, Ilaria Iannetti, Loredana Guglielmi, et al. "Confocal Analysis of Nuclear Lamina Behavior during Male Meiosis and Spermatogenesis in Drosophila melanogaster." PLOS ONE 11, no. 3 (2016): e0151231. http://dx.doi.org/10.1371/journal.pone.0151231.

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34

Szabad, J., E. Máthé, and J. Puro. "Horka, a dominant mutation of Drosophila, induces nondisjunction and, through paternal effect, chromosome loss and genetic mosaics." Genetics 139, no. 4 (1995): 1585–99. http://dx.doi.org/10.1093/genetics/139.4.1585.

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Abstract Fs(3)Horka (Horka) was described as a dominant female-sterile mutation of Drosophila melanogaster. Genetic and cytological data show that Horka induces mostly equational nondisjunction during spermatogenesis but not chromosome loss and possesses a dominant paternal effect: the X, second, third and the fourth chromosomes, but not the Y, are rendered unstable while undergoing spermatogenesis and may be lost in the descending zygotes. The frequency of Horka-induced chromosome loss is usually 2-4% but varies with the genetic background and can be over 20%. The X chromosome loss occurs dur

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35

Yuan, Xiaoqing, Mary Miller, and John M. Belote. "Duplicated Proteasome Subunit Genes in Drosophila melanogaster Encoding Testes-Specific Isoforms." Genetics 144, no. 1 (1996): 147–57. http://dx.doi.org/10.1093/genetics/144.1.147.

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Abstract Using the previously cloned proteasome α-type subunit gene Pros28.1, we screened a Drosophila melanogaster genomic library using reduced stringency conditions to identify closely related genes. Two new genes, Pros28.1A (map position 92F) and Pros28.IB (map position 60D7), showing high sequence similarity to Pros28.1, were identified and characterized. Pros28.1A encodes a protein with 74% amino acid identity to PROS28.1, while the Pros28.1B gene product is 58% identical. The Pros28.1B gene has two introns, located in exactly analogous positions as the two introns in Pros28.1, while the

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36

Kessel, Richard G. "The relationships of annulate lamellae, fibrogranular bodies, nucleolus, and polyribosomes during spermatogenesis in Drosophila melanogaster." Journal of Ultrastructure Research 91, no. 3 (1985): 183–91. http://dx.doi.org/10.1016/s0022-5320(85)80012-5.

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37

Atsapkina, A. A., E. V. Golubkova, V. V. Kasatkina, E. O. Avanesyan, N. A. Ivankova, and L. A. Mamon. "Peculiarities of spermatogenesis in Drosophila melanogaster: Role of main transport receptor of mRNA (Dm NXF1)." Cell and Tissue Biology 4, no. 5 (2010): 429–35. http://dx.doi.org/10.1134/s1990519x10050044.

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38

Nerusheva, O. O., N. V. Dorogova, N. V. Gubanova, O. S. Yudina, and L. V. Omelyanchuk. "A GFP trap study uncovers the functions of Gilgamesh protein kinase in Drosophila melanogaster spermatogenesis." Cell Biology International 33, no. 5 (2009): 586–93. http://dx.doi.org/10.1016/j.cellbi.2009.02.009.

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39

Mason, D. Adam, Robert J. Fleming та David S. Goldfarb. "Drosophila melanogaster Importin α1 and α3 Can Replace Importin α2 During Spermatogenesis but Not Oogenesis". Genetics 161, № 1 (2002): 157–70. http://dx.doi.org/10.1093/genetics/161.1.157.

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Abstract Importin α’s mediate the nuclear transport of many classical nuclear localization signal (cNLS)-containing proteins. Multicellular animals contain multiple importin α genes, most of which fall into three conventional phylogenetic clades, here designated α1, α2, and α3. Using degenerate PCR we cloned Drosophila melanogaster importin α1, α2, and α3 genes, demonstrating that the complete conventional importin α gene family arose prior to the split between invertebrates and vertebrates. We have begun to analyze the genetic interactions among conventional importin α genes by studying their

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Cenci, G., S. Bonaccorsi, C. Pisano, F. Verni, and M. Gatti. "Chromatin and microtubule organization during premeiotic, meiotic and early postmeiotic stages of Drosophila melanogaster spermatogenesis." Journal of Cell Science 107, no. 12 (1994): 3521–34. http://dx.doi.org/10.1242/jcs.107.12.3521.

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Larval and pupal testes of Drosophila melanogaster were fixed with a methanol/acetone fixation procedure that results in good preservation of cell morphology; fixed cells viewed by phase-contrast optics exhibit most of the structural details that can be seen in live material. Fixed testis preparations were treated with anti-tubulin antibodies and Hoechst 33258 to selectively stain microtubules and DNA. The combined analysis of cell morphology, chromatin and microtubule organization allowed a fine cytological dissection of gonial cell multiplication, spermatocyte development, meiosis and the ea

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Enjolras, Camille, Joëlle Thomas, Brigitte Chhin, et al. "Drosophila chibby is required for basal body formation and ciliogenesis but not for Wg signaling." Journal of Cell Biology 197, no. 2 (2012): 313–25. http://dx.doi.org/10.1083/jcb.201109148.

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Centriole-to–basal body conversion, a complex process essential for ciliogenesis, involves the progressive addition of specific proteins to centrioles. CHIBBY (CBY) is a coiled-coil domain protein first described as interacting with β-catenin and involved in Wg-Int (WNT) signaling. We found that, in Drosophila melanogaster, CBY was exclusively expressed in cells that require functional basal bodies, i.e., sensory neurons and male germ cells. CBY was associated with the basal body transition zone (TZ) in these two cell types. Inactivation of cby led to defects in sensory transduction and in spe

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Wang, Xin Rui, Li Bin Ling, Hsiao Han Huang, Jau Jyun Lin, Sebastian D. Fugmann, and Shu Yuan Yang. "Evidence for parallel evolution of a gene involved in the regulation of spermatogenesis." Proceedings of the Royal Society B: Biological Sciences 284, no. 1855 (2017): 20170324. http://dx.doi.org/10.1098/rspb.2017.0324.

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PHD finger protein 7 ( Phf7 ) is a male germline specific gene in Drosophila melanogaster that can trigger the male germline sexual fate and regulate spermatogenesis, and its human homologue can rescue fecundity defects in male flies lacking this gene. These findings prompted us to investigate conservation of reproductive strategies through studying the evolutionary origin of this gene. We find that Phf7 is present only in select species including mammals and some insects, whereas the closely related G2/M-phase specific E3 ubiquitin protein ligase ( G2e3 ) is in the genome of most metazoans. I

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Sakai, Hiroki, Hiroyuki Oshima, Kodai Yuri, et al. "Dimorphic sperm formation by Sex-lethal." Proceedings of the National Academy of Sciences 116, no. 21 (2019): 10412–17. http://dx.doi.org/10.1073/pnas.1820101116.

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Sex is determined by diverse mechanisms and master sex-determination genes are highly divergent, even among closely related species. Therefore, it is possible that homologs of master sex-determination genes might have alternative functions in different species. Herein, we focused on Sex-lethal (Sxl), which is the master sex-determination gene in Drosophila melanogaster and is necessary for female germline development. It has been widely shown that the sex-determination function of Sxl in Drosophilidae species is not conserved in other insects of different orders. We investigated the function o

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ACHARYYA, M., and R. N. CHATTERJEE. "Genetic analysis of an intersex allele (ix5) that regulates sexual phenotype of both female and male Drosophila melanogaster." Genetical Research 80, no. 1 (2002): 7–14. http://dx.doi.org/10.1017/s0016672302005694.

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An allele of intersex (ix5) of Drosophila melanogaster has been characterized. The genetic analysis of the allele demonstrated that like other point mutations of ix, the ix5 allele also transformed diplo-X individuals into intersexes. The ix5 mutation also affects the arrangement of sex comb bristles on the forelegs of males, although they had morphologically nearly normal male genitalia. They often fail to display a sustained pattern of courtship activity when tested. Orcein-stained squash preparations of testes from ix5 males revealed a defect in spermatogenesis. Our results, taken together

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Casal, J., C. Gonzalez, F. Wandosell, J. Avila, and P. Ripoll. "Abnormal meiotic spindles cause a cascade of defects during spermatogenesis in asp males of Drosophila." Development 108, no. 2 (1990): 251–60. http://dx.doi.org/10.1242/dev.108.2.251.

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Since spermatogenesis in Drosophila is a series of interconnected and interdependent steps and most of the spermatogenic events take place in the absence of transcription, failures in a given stage can give rise to a cascade of defects later on. The asp locus of Drosophila melanogaster codes for a non-tubulin component implicated in proper spindle structure and/or function (Ripoll et al. 1985). Homozygous asp males exhibit abnormal meiotic spindles giving rise to altered segregation of chromosomes and mitochondria and failures in cytokinesis. Postmeiotic spermatogenic stages of asp males show

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Haynes, S. R., M. T. Cooper, S. Pype, and D. T. Stolow. "Involvement of a tissue-specific RNA recognition motif protein in Drosophila spermatogenesis." Molecular and Cellular Biology 17, no. 5 (1997): 2708–15. http://dx.doi.org/10.1128/mcb.17.5.2708.

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RNA binding proteins mediate posttranscriptional regulation of gene expression via their roles in nuclear and cytoplasmic mRNA metabolism. Many of the proteins involved in these processes have a common RNA binding domain, the RNA recognition motif (RRM). We have characterized the Testis-specific RRM protein gene (Tsr), which plays an important role in spermatogenesis in Drosophila melanogaster. Disruption of Tsr led to a dramatic reduction in male fertility due to the production of spermatids with abnormalities in mitochondrial morphogenesis. Tsr is located on the third chromosome at 87F, adja

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Hundertmark, Tim, Stefanie M. K. Gärtner, Christina Rathke, and Renate Renkawitz-Pohl. "Nejire/dCBP-mediated histone H3 acetylation during spermatogenesis is essential for male fertility in Drosophila melanogaster." PLOS ONE 13, no. 9 (2018): e0203622. http://dx.doi.org/10.1371/journal.pone.0203622.

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Karess, R. E., and D. M. Glover. "rough deal: a gene required for proper mitotic segregation in Drosophila." Journal of Cell Biology 109, no. 6 (1989): 2951–61. http://dx.doi.org/10.1083/jcb.109.6.2951.

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We describe a genetic locus rough deal (rod) in Drosophila melanogaster, identified by mutations that interfere with the faithful transmission of chromosomes to daughter cells during mitosis. Five mutant alleles were isolated, each associated with a similar set of mitotic abnormalities in the dividing neuroblasts of homozygous mutant larvae: high frequencies of aneuploid cells and abnormal anaphase figures, in which chromatids may lag, form bridges, or completely fail to separate. Surviving homozygous adults are sterile, and show cuticular defects associated with cell death, i.e., roughened ey

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Rivard, Emily L., Andrew G. Ludwig, Prajal H. Patel, et al. "A putative de novo evolved gene required for spermatid chromatin condensation in Drosophila melanogaster." PLOS Genetics 17, no. 9 (2021): e1009787. http://dx.doi.org/10.1371/journal.pgen.1009787.

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Comparative genomics has enabled the identification of genes that potentially evolved de novo from non-coding sequences. Many such genes are expressed in male reproductive tissues, but their functions remain poorly understood. To address this, we conducted a functional genetic screen of over 40 putative de novo genes with testis-enriched expression in Drosophila melanogaster and identified one gene, atlas, required for male fertility. Detailed genetic and cytological analyses showed that atlas is required for proper chromatin condensation during the final stages of spermatogenesis. Atlas prote

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Mohr, Stephanie E., and Robert E. Boswell. "Genetic Analysis of Drosophila melanogaster Polytene Chromosome Region 44D–45F: Loci Required for Viability and Fertility." Genetics 160, no. 4 (2002): 1503–10. http://dx.doi.org/10.1093/genetics/160.4.1503.

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Abstract A genetic screen to identify mutations in genes in the 45A region on the right arm of chromosome 2 that are involved in oogenesis in Drosophila was undertaken. Several lethal but no female sterile mutations in the region had previously been identified in screens for P-element insertion or utilizing X rays or EMS as a mutagen. Here we report the identification of EMS-induced mutations in 21 essential loci in the 45D–45F region, including 13 previously unidentified loci. In addition, we isolated three mutant alleles of a newly identified locus required for fertility, sine prole. Mutatio

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