Development Genes and Evolution

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Differential expression of annexin V during spermatogenesis in the newt Cynops pyrrhogaster

T. Yamamoto, Taketoshi Hikino, Shin-ichi Ab

Development Genes and Evolution > 1996 > 206 > 1 > 64-71

AbstractIn order to isolate genes whose expression is up-regulated after the initiation of meiosis, we screened a cDNA expression library of newt testes with antiserum against homogenates of testes derived from the spermatogonial and spermatocyte stages. We report the isolation of spermatocyte-specific cDNA clones encoding a newt homologue of the calcium-dependent phospholipid-binding protein, annexin...

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Chromophore-assisted laser inactivation of even skipped in Drosophila precisely phenocopies genetic loss of function

Reinhard Schrder, Diethard Tautz, D. G. Jay

Development Genes and Evolution > 1996 > 206 > 1 > 86-88

AbstractThe even skipped (eve) gene in Drosophila encodes a homeo-domain protein that acts as a trancriptional regulator during early embryogenesis. We show that an injection of a monoclonal antibody against the eve homeodomain in conjunction with chromophore-assisted laser inactivation (CALI) precisely phenocopies the eve mutant phenotype. Depending on the time of the laser treatment, both the early...

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Transplanted wing and leg imaginal discs in Drosophila melanogaster demonstrate interactions between epidermis and myoblasts in muscle formation

K. Vijay Raghavan, Nana Gendre, Reinhard F. Stocker

Development Genes and Evolution > 1996 > 206 > 1 > 46-53

AbstractAdult muscle development in Drosophila is intimately associated with the development of the nervous system and epidermis. During metamorphosis, myoblasts from the wing imaginal disc reach target sites on the developing pupal epidermis and begin the formation of multinucleate myofibres of the dorsal thorax. The paths taken by pupal myoblasts could be specified by the nervous system and/or the...

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Spatial and temporal expression pattern of Bombyx fork head/SGF-1 gene in embryogenesis

Hiroki Kokubo, S. Takiya, V. Mach, Y. Suzuki

Development Genes and Evolution > 1996 > 206 > 1 > 80-85

AbstractThe embryonic expression of Bombyx fkh/SGF-1 gene has been analysed using in situ hybridization and immunohistochemistry. Both transcripts and protein were first detected in the most anterior and posterior regions at the time of germ anlage formation, and were successively expressed in the foregut and hindgut at later stages. A weaker expression was also detected in the elongated midgut. By...

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Three Wnt genes expressed in a wide variety of tissues during development of the zebrafish, Danio rerio: developmental and evolutionary perspectives

P. Blader, U. Strhle, Philip W. Ingham

Development Genes and Evolution > 1996 > 206 > 1 > 3-13

AbstractProteins encoded by the Wnt family of genes act as signals and have been shown to play important roles in a wide variety of developmental processes. Here we describe the cloning of three Wnt family members from the zebrafish, Danio rerio, which encode proteins with homology to murine Wnt-2, -4 and -5A/B. The expression patterns of the latter two zebrafish genes, designated ZfWnt4 and ZfWnt5...

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Molecular characterization of myoplasmin-C1: a cytoskeletal component localized in the myoplasm of the ascidian egg

T. Nishikata, M. Wada

Development Genes and Evolution > 1996 > 206 > 1 > 72-79

AbstractMyoplasmin-C1 is a polypeptide detected by a monoclonal antibody, which is localized in the myoplasm of ascidian eggs. Since microinjection of the antibody blocks larval muscle development, myoplasmin-C1 may play a role in muscle cell differentiation (Nishikata etal. 1987). Isolation and characterization of myoplasmin-C1 cDNA clones revealed that the predicted amino acid sequence of myoplasmin-C1...

article

Inducible ternary control of transgene expression and cell ablation in Drosophila

H. K. Smith, Ian J. H. Roberts, Marcus J. Allen, J. B. Connolly, more

Development Genes and Evolution > 1996 > 206 > 1 > 14-24

AbstractIn Drosophila, P-GAL4 enhancer trap lines can target expression of a cloned gene, under control of a UASGAL element, to any cells of interest. However, additional expression of GAL4 in other cells can produce unwanted lethality or side-effects, particularly when it drives expression of a toxic gene product. To target the toxic gene product ricin A chain specifically to adult neurons, we have...

article

Cell-cell communication in nematode embryos: differences between Cephalobus spec. and Caenorhabditis elegans

Olaf Bossinger, E. Schierenberg

Development Genes and Evolution > 1996 > 206 > 1 > 25-34

AbstractDuring early nematode embryogenesis a series of asymmetric cleavages in the germ line generates several somatic founder cells and a primordial germ cell. We have found previously that the two soil nematodes Cephalobus spec. and Caenorhabditis elegans express considerable differences in the order of events and spatial arrangement of cells during early embryogenesis. With the help of microinjected...

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Two orthodenticle-related genes in the short-germ beetle Tribolium castaneum

Yuebing Li, Susan J. Brown, Bernhard Hausdorf, Diethard Tautz, more

Development Genes and Evolution > 1996 > 206 > 1 > 35-45

AbstractTo investigate the molecular basis of head evolution, we searched for genes related to the Drosophila orthodenticle (otd) homeobox gene in the short-germ beetle Tribolium castaneum. Unexpectedly, we found that there are two otd-related genes in Tribolium, with predicted homeodomains highly similar to that of the single Drosophila gene. One of the two genes (Tc otd-1) is more related in both...

article

cis-Regulatory elements conserved in the proximal promoter region of an ascidian embryonic muscle myosin heavy-chain gene

I. Araki, N. Satoh

Development Genes and Evolution > 1996 > 206 > 1 > 54-63

AbstractThe B-line muscle cells of the ascidian embryo are specified autonomously depending on determinants prelocalized in the myoplasm of unfertilized eggs. Expression of muscle-specific actin and myosin heavy-chain genes commences in the B-line presumptive muscle cells as early as the 32-cell stage. To explore the intrinsic genetic program for this differentiation, we analysed cis-regulatory elements...

article

The early stages of ommatidial development in the flour beetle Tribolium castaneum (Coleoptera; Tenebrionidae)

M. Friedrich, Irene Rambold, Roland R. Melzer

Development Genes and Evolution > 1997 > 206 > 2 > 136-146

AbstractUsing electron microscopy, the first stages of ommatidial development in the flour beetle Tribolium castaneum were analysed in relation to the cellular architecture of the adult compound eye and were compared to the corresponding patterning process in the fruit fly Drosophila melanogaster. The ommatidia of the slightly horse-shoe shaped beetle compound eye contain six peripheral and two central...

article

Restricting oxygen supply to the prospective dorsal side does not reverse axis polarity in embryos of Xenopus laevis

S. D. Black, Susan N. Hawk, Kay Larkin

Development Genes and Evolution > 1997 > 206 > 2 > 147-152

AbstractDuring the first cell cycle, the prospective dorsal side of the embryo of Xenopus laevis becomes enriched in mitochondria relative to the ventral side. This differential distribution of mitochondria persists throughout early development, but it is not known if it is of functional significance, since there do not appear to be dorsal-ventral differences in metabolic rate. However, the unilateral...

article

The role of Ca2+ in progesterone-induced germinal vesicle breakdown of Xenopus laevis oocytes: the synergic effects of microtubule depolymerization and Ca2+

N. S. Duesbery, Y. Masui

Development Genes and Evolution > 1997 > 206 > 2 > 110-124

AbstractBy monitoring 45Ca2+ influx and efflux from oocytes a transient increase followed by a transient decrease in the Ca2+-content of progesterone-treated oocytes was observed. Chelation of intracellular Ca2+ with EGTA or BAPTA-type buffers inhibited progesterone-induced GVBD. Buffers with a mid-range Kd (1.5 m) were most effective in inhibiting GVBD whereas buffers with a Kd above or below this...

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Polar effects of lithium in the heart of the zebrafish Danio rerio

R. A. McCarthy, M. Sun, J. C. Taylor, Denice Smith

Development Genes and Evolution > 1997 > 206 > 2 > 102-109

AbstractThe molecular signalling mechanisms that are believed to govern the patterning of the heart early in embryonic development are not well understood. We have investigated the events which occur during patterning of the vertebrate heart by exposing gastrula stage zebrafish embryos to lithium, which is known to affect the phosphoinositol signalling pathway. Treatment of embryos at 50% epiboly...

article

Distinct functions of the Drosophila genes Serrate and Delta revealed by ectopic expression during wing development

Franziska Jnsson, E. Knust

Development Genes and Evolution > 1997 > 206 > 2 > 91-101

AbstractThe Drosophila gene Serrate encodes a transmembrane protein with 14 epidermal growth factor-(EGF)-like repeats in its extracellular portion. It has been suggested to act as a signal in the developing wing from the dorsal side to induce the organising centre at the dorsal/ventral compartment boundary, which is required for growth and patterning of the wing. Ectopic expression of Serrate during...

article

Transcription of a zebrafish gene of the hairy-Enhancer of split family delineates the midbrain anlage in the neural plate

Marcus Mller, Elisabeth von Weizscker, Jos A. Campos-Ortega

Development Genes and Evolution > 1997 > 206 > 2 > 153-160

Abstracther5 encodes a basic helix-loop-helix (bHLH) protein with all features characteristic of the Drosophila hairy-E(spl) family. her5 is expressed in a band of cells within the neural anlage from about 90% epiboly on to at least 36 h postfertilization (hpf). After completion of brain morphogenesis, her5-expressing cells are located in the caudal region of the midbrain, at the boundary with the...

article

Variation of cleavage pattern permitting normal development in a sand dollar, Peronella japonica: comparison with other sand dollars

S. Amemiya, E. Arakawa

Development Genes and Evolution > 1997 > 206 > 2 > 125-135

AbstractPeronella japonica, a sand dollar, forms an abbreviated pluteus larva and metamorphoses within 3 days without feeding. In the present study, the cleavage pattern of Peronella embryos was found to be quite irregular in the vegetal blastomeres at the fourth cleavage. Less than half of the embryos examined formed four typical micromeres. The majority formed zero, one, two or three typical micromeres...

article

Expression of endostyle-specific genes in the ascidian Halocynthia roretzi

M. Ogasawara, Kimio J. Tanaka, Kazuhiro W. Makabe, Noriyuki Satoh

Development Genes and Evolution > 1997 > 206 > 3 > 227-235

AbstractThe endostyle is a special organ in the pharynx of Urochordata, Cephalochordata and Cyclostomata. This organ may have arisen in their common ancestor with a shift to internal feeding for extracting suspended food from the water. In addition, the endostyle has functional homology to the vertebrate thyroid gland. The endostyle is therefore another key structure in the understanding of the origin...

article

Genetic mosaic analysis of decapentaplegic and wingless gene function in the Drosophila leg

L. I. Held Jr., Michael A. Heup

Development Genes and Evolution > 1997 > 206 > 3 > 180-194

AbstractGenetically mosaic flies were constructed which lack a functional decapentaplegic (dpp) or wingless (wg) gene in portions of their leg epidermis, and the leg cuticle was examined for defects. Although dpp has previously been shown to be transcribed both ventrally and dorsally, virtually the only dpp-null clones that affect leg anatomy are those which reside dorsally. Conversely, wg-null clones...

article

A novel antigen is shared by retinal pigment epithelium and pigmented neural crest

Everton Clare, S. G. Hoskins

Development Genes and Evolution > 1997 > 206 > 3 > 195-206

AbstractPigment cells in vertebrate embryos are formed in both the central and peripheral nervous system. The neural crest, a largely pluripotent population of precursor cells derived from the embryonic neural tube, gives rise to pigment cells which migrate widely in head and trunk.The retinal pigment epithelium is derived from the optic cup, which arises from ectoderm of the neural tube. We have...

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Development Genes and Evolution

Differential expression of annexin V during spermatogenesis in the newt Cynops pyrrhogaster

Chromophore-assisted laser inactivation of even skipped in Drosophila precisely phenocopies genetic loss of function

Transplanted wing and leg imaginal discs in Drosophila melanogaster demonstrate interactions between epidermis and myoblasts in muscle formation

Spatial and temporal expression pattern of Bombyx fork head/SGF-1 gene in embryogenesis

Three Wnt genes expressed in a wide variety of tissues during development of the zebrafish, Danio rerio: developmental and evolutionary perspectives

Molecular characterization of myoplasmin-C1: a cytoskeletal component localized in the myoplasm of the ascidian egg

Inducible ternary control of transgene expression and cell ablation in Drosophila

Cell-cell communication in nematode embryos: differences between Cephalobus spec. and Caenorhabditis elegans

Two orthodenticle-related genes in the short-germ beetle Tribolium castaneum

cis-Regulatory elements conserved in the proximal promoter region of an ascidian embryonic muscle myosin heavy-chain gene

The early stages of ommatidial development in the flour beetle Tribolium castaneum (Coleoptera; Tenebrionidae)

Restricting oxygen supply to the prospective dorsal side does not reverse axis polarity in embryos of Xenopus laevis

The role of Ca2+ in progesterone-induced germinal vesicle breakdown of Xenopus laevis oocytes: the synergic effects of microtubule depolymerization and Ca2+

Polar effects of lithium in the heart of the zebrafish Danio rerio

Distinct functions of the Drosophila genes Serrate and Delta revealed by ectopic expression during wing development

Transcription of a zebrafish gene of the hairy-Enhancer of split family delineates the midbrain anlage in the neural plate

Variation of cleavage pattern permitting normal development in a sand dollar, Peronella japonica: comparison with other sand dollars

Expression of endostyle-specific genes in the ascidian Halocynthia roretzi

Genetic mosaic analysis of decapentaplegic and wingless gene function in the Drosophila leg

A novel antigen is shared by retinal pigment epithelium and pigmented neural crest

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