@article{AdolfiCarreiraJesusetal.2015,
  author    = {Adolfi, Mateus C. and Carreira, Ana C. O. and Jesus, L{\´a}zaro W. O. and Bogerd, Jan and Funes, Rejane M. and Schartl, Manfred and Sogayar, Mari C. and Borella, Maria I.},
  title     = {Molecular cloning and expression analysis of dmrt1 and sox9 during gonad development and male reproductive cycle in the lambari fish, Astyanax altiparanae},
  series = {Reproductive Biology and Endocrinology},
  volume    = {13},
  journal   = {Reproductive Biology and Endocrinology},
  number    = {2},
  doi       = {10.1186/1477-7827-13-2},
  url       = {http://nbn-resolving.de/urn:nbn:de:bvb:20-opus-126486},
  year      = {2015},
  abstract  = {Background The dmrt1 and sox9 genes have a well conserved function related to testis formation in vertebrates, and the group of fish presents a great diversity of species and reproductive mechanisms. The lambari fish (Astyanax altiparanae) is an important Neotropical species, where studies on molecular level of sex determination and gonad maturation are scarce. Methods Here, we employed molecular cloning techniques to analyze the cDNA sequences of the dmrt1 and sox9 genes, and describe the expression pattern of those genes during development and the male reproductive cycle by qRT-PCR, and related to histology of the gonad. Results Phylogenetic analyses of predicted amino acid sequences of dmrt1 and sox9 clustered A. altiparanae in the Ostariophysi group, which is consistent with the morphological phylogeny of this species. Studies of the gonad development revealed that ovary formation occurred at 58 days after hatching (dah), 2 weeks earlier than testis formation. Expression studies of sox9 and dmrt1 in different tissues of adult males and females and during development revealed specific expression in the testis, indicating that both genes also have a male-specific role in the adult. During the period of gonad sex differentiation, dmrt1 seems to have a more significant role than sox9. During the male reproductive cycle dmrt1 and sox9 are down-regulated after spermiation, indicating a role of these genes in spermatogenesis. Conclusions For the first time the dmrt1 and sox9 were cloned in a Characiformes species. We show that both genes have a conserved structure and expression, evidencing their role in sex determination, sex differentiation and the male reproductive cycle in A. altiparanae. These findings contribute to a better understanding of the molecular mechanisms of sex determination and differentiation in fish.},
  language  = {en}
}
@article{BiscottiAdolfiBaruccaetal.2018,
  author    = {Biscotti, Maria Assunta and Adolfi, Mateus Contar and Barucca, Marco and Forconi, Mariko and Pallavicini, Alberto and Gerdol, Marco and Canapa, Adriana and Schartl, Manfred},
  title     = {A comparative view on sex differentiation and gametogenesis genes in lungfish and coelacanths},
  series = {Genome Biology and Evolution},
  volume    = {10},
  journal   = {Genome Biology and Evolution},
  number    = {6},
  doi       = {10.1093/gbe/evy101},
  url       = {http://nbn-resolving.de/urn:nbn:de:bvb:20-opus-176774},
  pages     = {1430-1444},
  year      = {2018},
  abstract  = {Gonadal sex differentiation and reproduction are the keys to the perpetuation of favorable gene combinations and positively selected traits. In vertebrates, several gonad development features that differentiate tetrapods and fishes are likely to be, at least in part, related to the water-to-land transition. The collection of information from basal sarcopterygians, coelacanths, and lungfishes, is crucial to improve our understanding of the molecular evolution of pathways involved in reproductive functions, since these organisms are generally regarded as "living fossils" and as the direct ancestors of tetrapods. Here, we report for the first time the characterization of >50 genes related to sex differentiation and gametogenesis in Latimeria menadoensis and Protopterus annectens. Although the expression profiles of most genes is consistent with the intermediate position of basal sarcopterygians between actinopterygian fish and tetrapods, their phylogenetic placement and presence/absence patterns often reveal a closer affinity to the tetrapod orthologs. On the other hand, particular genes, for example, the male gonad factor gsdf (Gonadal Soma-Derived Factor), provide examples of ancestral traits shared with actinopterygians, which disappeared in the tetrapod lineage.},
  language  = {en}
}