jeanflop/post_ocr_correction2 huggingface dataset:
RNA synthesis during oogenesis along the whole gonadic tube. In germ cells, oocytes in diakinesis (oviduct) and in division of maturation (uterus) show no label. On the contrary, oogonia and growing oocytes in ovary are labelled. RNA synthesis is always detected in all parietal cells but is more active in oviduct and uterus where the gonadic wall is particularly developed. Mutants of Escherichia coli Deficient in 4-Thiouridine, by Gilles Thomas and Alain Favre 1345 Thirteen different mutants of E. coli K12 selected for a reduced near ultraviolet-induced growth delay have been isolated. The t-RNAs extracted from these clones have all a depressed content of 4-thiouridine. One of these mutants, called Nop, has an almost negligible growth delay and completely lacks 4-thiouridine in its t-RNAs, Thus, it provides genetic proofs that 4-thiouridine is the chromophore for growth delay. Biochemistry Effects of Four Detergents Upon the Respiration of Isolated Rat Liver Mitochondria, by Jean-Paul Carreau and Paul Mazliak. The effects of these four detergents (two non-ionic: Triton X100 and Tween 80, two ionic: sodium cholate and sodium deoxycholate) upon the respiratory intensities of mitochondria and upon the ADP/O and respiratory control ratios were observed. At low concentrations and in the absence of exogenous ADP, non-ionic as well as ionic detergents provoked a threefold (or fourfold) increase of the respiratory intensities of mitochondria. At higher concentrations, the four detergents were inhibitory for mitochondrial oxidations in the order: Triton X 100 > DOC > cholate > Tween 80. At increasing doses, the four detergents progressively decreased the phosphorylating capacities of mitochondria. Biochemistry Solubilisation and Purification with Sodium Deoxycholate of the (Na+-K+)-Dependent ATPase from Human Erythrocyte Ghosts, by Josette Chauillon, Monique Thuet and Marie-Hélène Authier. The (Na+-K+)-dependent ATPase prepared from human erythrocyte ghosts has been purified with sodium deoxycholate in a high ionic medium. After the purification, 60 % of the native activity bound to the membranes was recovered. Spontaneous Phospholipase A Activity of Rat Pancreas Homogenate, by Suzanne Durand, François Clemente, Jacques Lloveras, Jean-Paul Thouvenot and Louis Douste-Blazy. Rat pancreas presents a spontaneous phospholipase A activity which appears before trypsin activation at optimal pH
exogenous ADP, non-ionic as well as ionic detergents provoked a threefold (or fourfold) increase of the respiratory intensities of mitochondria. At higher concentrations, the four detergents were inhibitory for mitochondrial oxidations in the order: Triton X 100 > DOC > cholate > Tween 80. At increasing doses, the four detergents progressively decreased the phosphorylating capacities of mitochondria. Biochemistry Solubilisation and Purification with Sodium Deoxycholate of the (Na+-K+)-Dependent ATPase from Human Erythrocyte Ghosts, by Josette Chauillon, Monique Thuet and Marie-Hélène Authier. The (Na+-K+)-dependent ATPase prepared from human erythrocyte ghosts has been purified with sodium deoxycholate in a high ionic medium. After the purification, 60 % of the native activity bound to the membranes was recovered. Spontaneous Phospholipase A Activity of Rat Pancreas Homogenate, by Suzanne Durand, François Clemente, Jacques Lloveras, Jean-Paul Thouvenot and Louis Douste-Blazy. Rat pancreas presents a spontaneous phospholipase A activity which appears before trypsin activation at optimal pH 6.5. The responsible enzyme is independent of pancreatic prophospholipase A, as can be seen through experiments done in the presence of trypsin inhibitors. On the other hand, this enzyme is distinct from excretory phospholipase which is more active and whose optimal pH is 8.8. Thermostability and insensibility of spontaneously active phospholipase A to DFP differentiate it from lipase, carboxyl-esterhydrolase and lysophospholipase, respectively. Behaviour and quantity of catecholamines: comparative study of gregarious, and solitary insects and those treated by carbon dioxide; Locusta migratoria (Insects, Orthoptera), by Suzel Futeau-Braesch. The dopamine (DA) and noradrenaline (NA) was measured in Locusta migratoria for 3 groups of individuals showing differences in their motility: gregarious are very active, solitary and animals in chronic treatment by CO2 (1 mn/day) show a very low motility. NA is present in small amounts (0,120-0,250 μg/g) in the 3 groups without significant differences. On the contrary, the quantity of DA is 5 times greater in gregarious than in the 2 other groups (1,78 and 0,31-0,39 μg/g). Thus it is suggested that DA is related to motility and must play its own role of a neurohormone, distinct from that of a metabolic intermediary between DOPA and NA. The question of a relationship
phospholipase A to DFP differentiate it from lipase, carboxyl-esterhydrolase and lysophospholipase, respectively. Behaviour and quantity of catecholamines: comparative study of gregarious, and solitary insects and those treated by carbon dioxide; Locusta migratoria (Insects, Orthoptera), by Suzel Futeau-Braesch. The dopamine (DA) and noradrenaline (NA) was measured in Locusta migratoria for 3 groups of individuals showing differences in their motility: gregarious are very active, solitary and animals in chronic treatment by CO2 (1 mn/day) show a very low motility. NA is present in small amounts (0,120-0,250 μg/g) in the 3 groups without significant differences. On the contrary, the quantity of DA is 5 times greater in gregarious than in the 2 other groups (1,78 and 0,31-0,39 μg/g). Thus it is suggested that DA is related to motility and must play its own role of a neurohormone, distinct from that of a metabolic intermediary between DOPA and NA. The question of a relationship between the metabolism of catecholamines and melanization is open. Bacteriology In vivo morphological study of different vegetative systems and reproduction in Gaussenia bacteriospiralis nov. gen. nov. sp., by Georges Labroue. A new microorganism of bacterial origin, parasite of Triodia eragrostoides Vasey and Scribn., a Mexican gramineae, has been named Gaussenia bacteriospiralis. It shows a very curious reproduction and a rather diversified vegetative system. Both are analysed and described inside and outside the host plant. COMPTES RENDUS HEBDOMONAUX DES SÉANCES DE L'ACADÉMIE DES SCIENCES CONTENTS VOLUME 284 — SECTION D No. 15 — SESSION OF APRIL 18th 1977 Radiochronology Pan-African Rejuvenation of Granites in Anosy Range, Esira Area (south-east of Madagascar), by Michelle Vachette and Gabriel Hottin. The granitic and charnockitic formations in the anosy range yield an age of 655 ± 27 My. with an intercept of 0.742,6 ± 0.000,9, which means the immobilisation of an older material. The age of 1.140 ± 300 My. obtained previously on a monazite from a pegmatite which cut these granites, confirms this rejuvenation and shows the importance of the pan-african event in this area, south-east of Madagascar. Geochemistry Formation of Zeolites in the Weathering of a Gabbroic Rock from the Body of Pallet
bacteriospiralis. It shows a very curious reproduction and a rather diversified vegetative system. Both are analysed and described inside and outside the host plant. COMPTES RENDUS HEBDOMONAUX DES SÉANCES DE L'ACADÉMIE DES SCIENCES CONTENTS VOLUME 284 — SECTION D No. 15 — SESSION OF APRIL 18th 1977 Radiochronology Pan-African Rejuvenation of Granites in Anosy Range, Esira Area (south-east of Madagascar), by Michelle Vachette and Gabriel Hottin. The granitic and charnockitic formations in the anosy range yield an age of 655 ± 27 My. with an intercept of 0.742,6 ± 0.000,9, which means the immobilisation of an older material. The age of 1.140 ± 300 My. obtained previously on a monazite from a pegmatite which cut these granites, confirms this rejuvenation and shows the importance of the pan-african event in this area, south-east of Madagascar. Geochemistry Formation of Zeolites in the Weathering of a Gabbroic Rock from the Body of Pallet (Loire-Atlantique, France), by Philippe Didier. Mineralogical studies by X-ray diffraction have revealed the presence of two zeolites in the plagioclase feldspars of a weathered profile developed on the gabbroic body of Pallet (Loire-Atlantique, France) : a mineral in the heulandite-clinoptilolite series and another like chabazite. Chemical evolution of these feldspars occurs towards the area of calcic and calco-alkali zeolites with loss of calcium, sodium, aluminium and relative gain of silicon. Geology The Discovery of a Thermal Dome in the Western Part of the Alcudian Valley (Western Almaden, Sierra Morena, Spain), by Max Vidal and Yannick Lozac'h. An hercynian thermal high, related to a structural accident, may be inferred from changes in metamorphism and cleavage in alcudian and paleozoic sediments. The study of cleavage confirms the results from crystallinity index measurements in illite. Geomicrobiology Mineralisation of Experimental Carbonated Deposits of Microbian Origin. Comparison of Calcareous Rocks by Biogenesis to Actual Ones and Fossils as observed in Nature, by Jean-Pierre Adolphe and Catherine Marechal. In vitro, bacterian veils construct crystallisations and calcareous rocks comparable to actual sedimentary rocks and fossils. Paleontology The Genus Groenlandaspis Heintz (Pisces, Placodermi, Arthrodira) in the Devonian of Asia, by Philippe Janvier and Alexander Ritchie. The late Devonian
occurs towards the area of calcic and calco-alkali zeolites with loss of calcium, sodium, aluminium and relative gain of silicon. Geology The Discovery of a Thermal Dome in the Western Part of the Alcudian Valley (Western Almaden, Sierra Morena, Spain), by Max Vidal and Yannick Lozac'h. An hercynian thermal high, related to a structural accident, may be inferred from changes in metamorphism and cleavage in alcudian and paleozoic sediments. The study of cleavage confirms the results from crystallinity index measurements in illite. Geomicrobiology Mineralisation of Experimental Carbonated Deposits of Microbian Origin. Comparison of Calcareous Rocks by Biogenesis to Actual Ones and Fossils as observed in Nature, by Jean-Pierre Adolphe and Catherine Marechal. In vitro, bacterian veils construct crystallisations and calcareous rocks comparable to actual sedimentary rocks and fossils. Paleontology The Genus Groenlandaspis Heintz (Pisces, Placodermi, Arthrodira) in the Devonian of Asia, by Philippe Janvier and Alexander Ritchie. The late Devonian arctolepid arthrodire, Groenlandaspis, first recorded from the Upper Devonian of East Greenland and then discovered in the Devonian of Antarctica, Australia, England and Ireland, is described here, for the first time, from the Devonian of Asia. The new material originates from southern Turkey and from north-eastern Iran; a new species, G. seni. is described from the Turkish deposits. Some remarks are also made on the palaeobiogeography of Devonian placoderm fishes. Paleontology The Miocene Mastodonts of the Aquitaine Basin: a Taxonomic Account, by Pascal Tassy. Three species of Mastodonts are retained in the Miocene of the Aquitaine Basin. The Burdigalian-Vindobonian bunodont Mastodont Gomphotherium angustidens (Cuvier), the contemporaneous zygodont Mastodont Zygolophodon turicensis (Schinz) and the late Vindobonian and. Vallesian bunodont Mastodont Tetralophodon longirostris (Kaup), A New Genus of a Hominoid Primate in the Vallesian (Upper Miocene) of Macedonia, by Louis de Bonis and Jean Melentis 1393 The latest field trips in the Vallesian of Macedonia allowed us to complete our knowledge of the fauna of the locality of the Ravine of the Rain and also to find an upper jaw of an hominoid Primate belonging to a new genus: Ouranopithecus. Plant Physiology Preliminary Results on the Proline Metabolism in Relation to Drought
G. seni. is described from the Turkish deposits. Some remarks are also made on the palaeobiogeography of Devonian placoderm fishes. Paleontology The Miocene Mastodonts of the Aquitaine Basin: a Taxonomic Account, by Pascal Tassy. Three species of Mastodonts are retained in the Miocene of the Aquitaine Basin. The Burdigalian-Vindobonian bunodont Mastodont Gomphotherium angustidens (Cuvier), the contemporaneous zygodont Mastodont Zygolophodon turicensis (Schinz) and the late Vindobonian and. Vallesian bunodont Mastodont Tetralophodon longirostris (Kaup), A New Genus of a Hominoid Primate in the Vallesian (Upper Miocene) of Macedonia, by Louis de Bonis and Jean Melentis 1393 The latest field trips in the Vallesian of Macedonia allowed us to complete our knowledge of the fauna of the locality of the Ravine of the Rain and also to find an upper jaw of an hominoid Primate belonging to a new genus: Ouranopithecus. Plant Physiology Preliminary Results on the Proline Metabolism in Relation to Drought Resistance, by Camille Hubac, Daniele Guerrier and Jean Ferran 1397 The consecutive metabolism in addition to radioactive proline has been studied on the leaf discs of Gossypium submitted to water-stress. Glycolic acid is particularly marked, this leads us to hypothesize the action of proline on photorespiration. Aster tripolium Leaf Cell Wall Composition: Salt-induced Changes of Pectic Polysaccharides, by Alain Perrelle 1401 Aster tripolium leaf cell wall composition is modified by NaCl: the percentage of arabinose is enhanced; the amount of uronic acid is lowered but its degree of esterification remains high. Research on the Vegetative Propagation of Douglas fir: Pseudotsuga menziesii (Mirb) Franco. Possibilities of Obtaining Viable Plants from in vitro Culture of Young Orlets, by Michel Boulay and André Franclet 1405 Buds of Douglas fir gathered from ortets of various ages have been cultivated in vitro. The successive use of three different media can give a viable plantlet if the ortet is less than two years old. If the ortet is more than two years old, the bud growth on the media is very slow. It has been possible to speed the growth of senile clone by using axillary shoots given by the senile bud after "in vitro pruning"
Wall Composition: Salt-induced Changes of Pectic Polysaccharides, by Alain Perrelle 1401 Aster tripolium leaf cell wall composition is modified by NaCl: the percentage of arabinose is enhanced; the amount of uronic acid is lowered but its degree of esterification remains high. Research on the Vegetative Propagation of Douglas fir: Pseudotsuga menziesii (Mirb) Franco. Possibilities of Obtaining Viable Plants from in vitro Culture of Young Orlets, by Michel Boulay and André Franclet 1405 Buds of Douglas fir gathered from ortets of various ages have been cultivated in vitro. The successive use of three different media can give a viable plantlet if the ortet is less than two years old. If the ortet is more than two years old, the bud growth on the media is very slow. It has been possible to speed the growth of senile clone by using axillary shoots given by the senile bud after "in vitro pruning" of the apical meristem and not-yet-expanded leaves. Action of Auxin on P I 3 Endoglucanase Activities in Phaseolus aureus Hypocotyl Segments, by Renée Goldberg 1409 In Phaseolus aureus hypocotyl segments, more than 80 % of the β 1 3 endoglucanase activity is located in particular fractions. Incubation of hypocotyl segments in an IAA solution (5 x 10-6 M) induces an increment of soluble and particular endoglucanase activities compared with the activities of segments incubated in a millimolar buffer without IAA. Inhibition of Flowering of Photoperiodically Induced Anagallis arvensis by Zeatin Treatments, by Denise Fontaine, Nicole Dugue and Émile Miginiac 1413 The laying of a zeatin solution on the apical zone of plants during the induction and the expression phases modifies significantly the response of the treated plants compared with the untreated ones. With a high concentration the flowering can be inhibited quasi completely; with a lower concentration the flowering of only one of two generally flowering nodes is inhibited. Plant Biology Benzylaminopurine Binding to the Ribosomes From Male and Female Flowers of Mercurialis annua L., by See-Ryun Chung, Raymonde Durand and Bernard Durand 1417 Benzylaminopurine binds specifically to the several different subcellular fractions prepared from male flower buds of M.
in an IAA solution (5 x 10-6 M) induces an increment of soluble and particular endoglucanase activities compared with the activities of segments incubated in a millimolar buffer without IAA. Inhibition of Flowering of Photoperiodically Induced Anagallis arvensis by Zeatin Treatments, by Denise Fontaine, Nicole Dugue and Émile Miginiac 1413 The laying of a zeatin solution on the apical zone of plants during the induction and the expression phases modifies significantly the response of the treated plants compared with the untreated ones. With a high concentration the flowering can be inhibited quasi completely; with a lower concentration the flowering of only one of two generally flowering nodes is inhibited. Plant Biology Benzylaminopurine Binding to the Ribosomes From Male and Female Flowers of Mercurialis annua L., by See-Ryun Chung, Raymonde Durand and Bernard Durand 1417 Benzylaminopurine binds specifically to the several different subcellular fractions prepared from male flower buds of M. annua. Cytokinin binds about two-fold greater to ribosomes from male flower buds than to female ones (1,85 moles of benzylaminopurine per mole of male ribosomes with a Kd of 0,42 nM and 0,96 moles per female ribosomes with a Kd of 0,30 nM). In male tissue which is poor in endogenous cytokinins, nevertheless, there exist specific receptors for benzylaminopurine. Histochemistry Ultrastructure and Histological Localisation of Xylans in the Primary Walls of Arundo donax Tissues, by Katia Ruel, Jean Comtat and Fernand Barnoud 1421 By the use of an endoxylanase, it was possible to show that xylans are present in all the primary walls of the immature internodes of Arundo donax. Their distribution varies according to the cell types and is not uniform in a given wall. Fibrous elements are separated during the lysis of the xylati matrix thereby pointing out the cementing role of the xylans in the growing wall. Animal Cytology Comparative Action of Three Spindle Inhibitors on Segmentation Mitoses (Glutaraldehyde, Colchicine and Phenyl Urethane), Ultrastructure of the Abnormal Mitoses Obtained, by Yadigar Ates and Paul Senêt 1425 The alterations of the ultrastructure of poles and kinetochores by action of the three spindle inhibitors show important qualitative differences in
endogenous cytokinins, nevertheless, there exist specific receptors for benzylaminopurine. Histochemistry Ultrastructure and Histological Localisation of Xylans in the Primary Walls of Arundo donax Tissues, by Katia Ruel, Jean Comtat and Fernand Barnoud 1421 By the use of an endoxylanase, it was possible to show that xylans are present in all the primary walls of the immature internodes of Arundo donax. Their distribution varies according to the cell types and is not uniform in a given wall. Fibrous elements are separated during the lysis of the xylati matrix thereby pointing out the cementing role of the xylans in the growing wall. Animal Cytology Comparative Action of Three Spindle Inhibitors on Segmentation Mitoses (Glutaraldehyde, Colchicine and Phenyl Urethane), Ultrastructure of the Abnormal Mitoses Obtained, by Yadigar Ates and Paul Senêt 1425 The alterations of the ultrastructure of poles and kinetochores by action of the three spindle inhibitors show important qualitative differences in their mode of action. Endocrinology Desensitization to hCG: Evidence for an hCG Dependent Negative Control of the Gonadotropin Receptors in the Testicular Leydig Cells, by France Haour, Pascale Sanchez, Dominique Gallet and José M. Sáez 1429 A single injection of hCG (500 IU) to intact and hypophysectomized prepubertal Rats increases plasma testosterone levels and decreases hCG receptors in the testicular Leydig cells for 4 to 5 days. In intact animals testosterone exhibits a rapid increase within hours and a delayed paradoxical increase between 60 and 96 hours. In hypophysectomized animals the first peak is not present. In both intact and hypophysectomized Rats hCG receptors are almost undetectable between 10 and 96 hours following hCG injection. Since receptor occupancy cannot account for this phenomenon it is concluded that hCG is exerting a negative control on its own receptors. Insect Neuro-Endocrinology Medial Neurosecretion after Cutting the Hypocerebrocardial Nerves in the African Locust, by Josiane Girardie and Adrien Girardie 1433 The severance of the two hypocerebrocardial nerves does not prevent the discharge of the electrostimulated medial neurosecretory cell bodies. The feedback of the provoked release, which induces the discharge of the medial cell bodies, is transmitted by the medial neurosecretory fibers. Neurochemistry Effects
plasma testosterone levels and decreases hCG receptors in the testicular Leydig cells for 4 to 5 days. In intact animals testosterone exhibits a rapid increase within hours and a delayed paradoxical increase between 60 and 96 hours. In hypophysectomized animals the first peak is not present. In both intact and hypophysectomized Rats hCG receptors are almost undetectable between 10 and 96 hours following hCG injection. Since receptor occupancy cannot account for this phenomenon it is concluded that hCG is exerting a negative control on its own receptors. Insect Neuro-Endocrinology Medial Neurosecretion after Cutting the Hypocerebrocardial Nerves in the African Locust, by Josiane Girardie and Adrien Girardie 1433 The severance of the two hypocerebrocardial nerves does not prevent the discharge of the electrostimulated medial neurosecretory cell bodies. The feedback of the provoked release, which induces the discharge of the medial cell bodies, is transmitted by the medial neurosecretory fibers. Neurochemistry Effects and Lethality of Chloroiodoquine in Various Strains of Mice, by Max Recasens, Yoshiro Aoki and Paul Mandel 1437 Chloroiodoquine has been implied in numerous cases of myeloneuropathy in Japan, while in other countries although equally frequently used, only a few cases have been reported after treatment with this drug. Studies on the effect of chloroiodoquine in mice of various inbred strains or from crossings between sensitive and insensitive strains demonstrated a genetic predisposition of sensitivity to chloroiodoquine. Biology The Imaginal Diapause Break in Females of Tetrix undulata (Sow.) (Orthoptera. Tetrigidae by Cauterisation of the Region of the pars intercerebralis, by Michel Poras The electrocauterisation of the region of the pars intercerebralis in diapausing females involves the ovocyte development with vitellogenesis and even the lay. It seems this "operation" involves the destruction of the center responsible for the inhibition of the corpus allatum. Experimental Biology Loss of the Restoration Power of Imaginal Leg Analage of Tenebrio Molitor (Insect. Coleoptera) and Establishment of imaginal Determinations During the Last Larval Instar, by Jean-Jacques Lenoir-Rousseaux In the pharate pupa, during the organogenesis of imaginal articles, the restoration power of excised articles is a specific property of tissues as ingrafting in last larval instar shows.