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Effect Of Pouterin, A Protein From Pouteria Torta (sapotaceae) Seeds, On The Development Of Anagasta Kuehniella (lepidoptera: Pyralidae)
No full textLarvae of the Mediterranean flour moth (Anagasta kuehniella Zeller) cause major losses in stored grains throughout the world. In this study, pouterin, a lectin-like protein isolated from Pouteria torta (Mart.) Radlk. seeds, was tested for activity against A. kuehniella larvae. Pouterin did not produce significant effects on survival; however, at c. 1% w/w concentration in artificial diet, it produced a 71.4% reduction in average weight of the larvae. A dietary utilisation assay showed a reduction in efficiency of conversion of ingested food, efficiency of conversion of digested food and approximate digestibility, as well as an increase in metabolic cost. Pouterin increased the level of trypsin in the midgut and faeces of larvae. We conclude that pouterin possesses an insecticidal effect against A. kuehniella larvae and this effect may be mediated by the binding of pouterin to chitin components of the peritrophic membrane, or glycosylated proteins in the insect midgut. © 2009 ICIPE.2912430Bate, N.J., Rothstein, S.J., C6-volatiles derived from the lipoxygenase pathway induce a subset of defense-related genes (1998) Plant Journal, 16, pp. 561-569Boleti, A.P.A., Freire, M.G.M., Coelho, M.B., Silva, W., Baldasso, P.A., Gomes, V.M., Marangoni, S., Macedo, M.L.R., Insecticidal and antifungal activity of a protein from Pouteria torta seeds with lectin-like properties (2007) Journal of Agricultural and Food Chemistry, 55, pp. 2653-2658Boleti, A.P.A., Ventura, C.A., Justo, G.Z., Silva, R.A., Sousa, A.C.T., Ferreira, C.V., Yano, T., Macedo, M.L.R., Pouterin, a novel potential cytotoxic lectin-like protein with apoptosis-inducing activity in tumorigenic mammalian cells (2008) Toxicon, 51, pp. 1321-1330Bradford, M.M., A rapid and sensitive method for the quantification of microgram quantities for proteins utilizing the principle of protein dye binding (1976) Anal. Biochem, (72), pp. 248-254Carlini, C.R., Grossi-De-Sá, M.F., Plant toxic proteins with insecticidal properties.Areview on their potentialities as bioinsecticides (2002) Toxicon, 40, pp. 1515-1539Coelho, M.B., Marangoni, S., Macedo, M.L.R., Insecticidal action of Annona coriacea lectin against the flour moth Anagasta kuehniella and the rice moth Corcyra cephalonica (Lepidoptera: Pyralidae) (2007) Comparative Biochemistry and Physiology, Part C, 146, pp. 406-414Erlanger, F., Kokowsky, N., Cohen, W., The preparation and properties of two chromogenic substrates of trypsin (1961) Archives of Biochemistry and Biophysics, 95, pp. 271-278Fabre, C., Causse, H., Mourey, L., Koninkx, J., Riviere, M., Puzo, G., Samama, J.P., Rougé, P., Characterization and sugar-binding properties of arcelin-1, an insecticidal lectin-like protein isolated from kidney bean (Phaseolus vulgaris L. cvRAZ-1) seeds (1998) Biochemical Journal, 329, pp. 551-560Ferry, N., Edwards, M.G., Gatehouse, J.A., Gatehouse, A.M.R., Plant-insect interactions: Molecular approaches to insect resistance (2004) Current Opinion in Biotechnology, 15, pp. 155-161Fitches, E., Gatehouse, J.A., A comparison of the short and long term effects of insecticidal lectins on the activities of soluble and brush border enzymes of tomato moth larvae (Lacanobia oleracea) (1998) Journal of Insect Physiology, 44, pp. 1213-1224Hackman, R.H., Goldberg, M., New substrate for use with chitinases (1964) Anal. Biochem, 8, pp. 397-401Koul, O., Daniewski, W.M., Multani, J.S., Gumulka, M., Singh, G., Antifeedant effects of the limonoids from Entandrophragma candolei (Meliaceae) on the gram pod borer Helicoverpa armigera (Lepidoptera: Noctuidae) (2003) Journal of Agricultural and Food Chemistry, 51, pp. 7271-7275Laemmli, V.K., Cleavage of structural proteins during the assembly of the bacteriophage T4 (1970) Nature, 227, pp. 680-685Macedo, M.L.R., Fernandes, K.V.S., Sales, M.P., Xavier-Filho, J., Vicilins variants and the resistance of cowpea (Vigna unguiculata) seeds to the cowpea weevil (Callosobruchus maculatus) (1993) Comparative Biochemistry and Physiology C, 105, pp. 89-94Macedo, M.L.R., Freire, M.G.M., Novello, J.C., Marangoni, S., Talisia esculenta lectin and larval development of Callosobruchus maculatus and Zabrotes subfasciatus (Coleoptera: Bruchidae). (2002) Biochimica et Biophysica Acta, 1571, pp. 83-88Macedo, M.L.R., Damico, D.C.S., Freire, M.G.M., Toyama, M.H., Marangoni, S., Novello, J.C., Purification and characterization of an N-acetylglucosamine-binding lectin from Koelreuteria paniculata seeds and its effect on the larval development of Callosobruchus maculatus (Coleoptera: Bruchidae) and Anagasta kuehniella (Lepidoptera: Pyralidae) (2003) Journal of Agricultural and Food Chemistry, 51, pp. 2980-2986Macedo, M.L.R., Freire, M.G.M., Cabrini, E.C., Toyama, M.H., Novello, J.C., Marangoni, S., A trypsin inhibitor from Peltophorum dubium seeds active against pest proteases and its effect on the survival of Anagasta kuehniella (Lepidoptera: Pyralidae) (2003) Biochimica et Biophysica Acta, 1621, pp. 170-181Macedo, M.L.R., Freire, M.G.M., Martins, L.T.D., Martinez, D.S., Gomes, V.M., Smolka, M.B., Toyama, M.H., Coelho, L.C.B.B., Novel protein from Labramia bojeri A. DC. Seeds homologue to Kunitz-type trypsin inhibitor with lectin-like properties (2004) Journal of Agricultural and Food Chemistry, 52, pp. 7548-7554Macedo, M.L.R., Freire, M.G.M., Silva, M.B.R., Coelho, L.C.B.B., Insecticidal action of Bauhinia monandra leaf lectin (BmoLL) against Anagasta kueh niella (Lepidoptera: Pyralidae), Zabrotes subfasciatus and Callosobruchus maculatus (Coleoptera: Bruchidae) (2007) Comparative Biochemistry and Physiology, 146, pp. 486-498Michaud, D., Faye, L., Yalle, S., Electrophoretic analysis of plant cysteine and serine proteinases using gelatin-containing polyacrilamide gels and classspecific proteinase inhibitors (1993) Electrophoresis, 14, pp. 94-99Mordue, L., Blackwell, A.J., Azadirachtin: An update (1993) Journal of Chemical Ecology, 15, pp. 121-128Powel, K.S., Gatehouse, A.M.R., Hilder, V.A., Van Damme, E.J.M., Peumans, W.J., Boonjawat, J., Horsham, K., Gatehouse, J.A., Different antimetabolic effects of related lectins towards nymphal stages of Nilaparvata lugens (1995) Entomologia Experimentalis et Applicata, 75, pp. 61-65Scriber, J.M., Slansky F. Jr, The nutritional ecology of immature insects (1981) Annual Review of Entomology, 26, pp. 183-211Tellan, R.L., Wijffels, G., Willadsen, P., Peritrophic matrix proteins (1999) Insect Biochemistry and Molecular Biology, 29, pp. 87-101Uchôa, A.F., DaMatta, R.A., Retamal, C.A., Albuquerque-Cunha, J.M., Souza, S.M., Samuels, R.I., Silva, C.P., Xavier-Filho, J., Presence of the storage seed protein vicilin in internal organs of larval Callosobruchus maculatus (Coleoptera: Bruchidae) (2006) Journal of Insect Physiology, 52, pp. 169-178Van Damme, E.J.M., Peumans, W.J., Barre, A., Rougé, P., Plant lectins: A composite of several distinct families of structurally and evolutionary related proteins with diverse biological roles (1998) Critical Reviews in Plant Sciences, 17, pp. 575-692Vasconcelos, I.M., Oliveira, J.T.A., Antinutritional properties of plant lectins (2004) Toxicon 44, 44, pp. 1737-1747Wearing, C.H., Cross-resistance between azinphosmethyl and tebufenozide in the green headed leafroller, Planotortix octo (1998) Pesticide Science, 54, pp. 203-211Wheeler, D.A., Isman, M.B., Antifeedant and toxic activity of Trichilia americana extract against the larvae of Spodoptera litura (2001) Entomologia Experimentalis et Applicata, 98, pp. 9-16Zhu-Salzman, K., Shade, R.E., Koiwa, H., Salzman, R.A., Narasimhan, M., Bressan, R.A., Hasegawa, P.M., Murdock, L.L., Carbohydrate binding and resistance to proteolysis control insecticidal activity of Griffonia simplicifolia lectin II (1998) Proceedings of the National Academy of Sciences, 95, pp. 15123-1512
Talisia Esculenta Lectin And Larval Development Of Callosobruchus Maculatus And Zabrotes Subfasciatus (coleoptera: Bruchidae)
No full textBruchid larvae cause major losses in grain legume crops throughout the world. Some bruchid species, such as the cowpea weevil and the Mexican bean weevil, are pests that damage stored seeds. Plant lectins have been implicated as antibiosis factors against insects, particularly the cowpea weevil, Callosobruchus maculatus. Talisia esculenta lectin (TEL) was tested for anti-insect activity against C. maculatus and Zabrotes subfasciatus larvae. TEL produced ca. 90% mortality to these bruchids when incorporated in an artificial diet at a level of 2% (w/w). The LD50 and ED50 for TEL was ca. 1% (w/w) for both insects. TEL was not digested by midgut preparations of C. maculatus and Z. subfasciatus. The transformation of the genes coding for this lectin could be useful in the development of insect resistance in important agricultural crops. © 2002 Elsevier Science B.V. All rights reserved.157128388Latunde-Dada, A.O., Genetic manipulation of the cowpea (Vigna unguiculata (L.) 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Res., 3, pp. 261-262Pimbert, M.P., Reproduction and oviposition preferences of Zabrotes subfasciatus stocks reared from two host plant species (1985) Entomol. Exp. Appl., 38, pp. 273-276Meik, J., Dobie, P., The ability of Zabrotes subfasciatus to attack cowpeas (1986) Entomol. Exp. Appl., 42, pp. 151-158Davies, J.C., A note on the occurrence of Zabrotes subfasciatus (Coleoptera: Bruchidae) on legumes in Uganda, East Afr. (1972) Agric. For. J., 71, pp. 294-299Macedo, M.L.R., Fernandes, K.V., Sales, M.P., Xavier-Filho, J., Purification and properties of storage proteins (vicilins) from cowpea (Vigna unguiculata) seeds which are susceptible or resistant to the bruchid beetle Callosobruchus maculatus (1995) Braz. J. Med. Biol. Res., 28, pp. 183-190Daoust, R.A., Roberts, D.A., Neves, B.P., Distribution, biology and control of cowpea pests in Latin America (1985) Cowpea Research, Production and Utilization, pp. 249-264. , S.R. Singh, & K.O. Rachie. 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Regulatory Effects Of An Inhibitor From Plathymenia Foliolosa Seeds On The Larval Development Of Anagasta Kuehniella (lepidoptera)
No full textThe Mediterranean flour moth, Anagasta kuehniella, is one of the most important insect pests of grains, reported worldwide, feeding on stored grains and products of rice, rye, corn and wheat. Plants synthesize a variety of molecules, including trypsin inhibitors, to defend themselves against attack by insects. In this study, a trypsin inhibitor (PFTI) was purified from Plathymenia foliolosa (Benth.) seeds and was tested for insect growth regulatory effect. The survival and mass of A. kuehniella larvae feeding on control seeds were about 82.7% and 5 mg, respectively, whereas survival on seeds containing 0.7% PFTI was about 56%, while a 66.1% reduction in the average mass of the larvae was observed. The results from dietary utilization experiments with A. kuehniella larvae showed a reduction in efficiency of conversion of ingested food and digested food, and an increase in approximate digestibility and metabolic cost. The level of trypsin was significantly decreased in larval midgut and increased in the feces of larvae reared on a diet containing 0.7% PFTI. Results indicate that PFTI possesses a toxic effect against A. kuehniella larvae. © 2008 Elsevier Inc. All rights reserved.1522255261Abdeen, A., Virgos, A., Olivella, E., Villanueva, J., Aviles, X., Gabarra, R., Prat, S., Multiple insect resistance in transgenic tomato plant over-expressing two families of plant proteinase inhibitors (2005) Plant Mol. Biol., 57, pp. 189-202Bhattacharyya, A., Mazumdar, S., Leighton, S.M., Babu, C.R., A Kunitz proteinase inhibitor from Archidendron ellipticum seeds: purification, characterization, and kinetic properties (2006) Phytochemistry, 67, pp. 232-241Bolter, C.J., Jongsman, M.A., Colorado potato beetles (Leptinotarsa decemlineata) adapt to proteinase-inhibitors induced in potato leaves by methyl jasmonate (1995) J. 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Going Beyond Counting First Authors in Author Co-citation Analysis
Get PDFThe present study examines one of the fundamental aspects of author co-citation analysis (ACA) - the way co-citation
counts are defined. Co-citation counting provides the data on which all subsequent statistical analyses and mappings
are based, and we compare ACA results based on two different types of co-citation counting - the traditional type that
only counts the first one among a cited work's authors on the one hand and a non-traditional type that takes into
account the first 5 authors of a cited work on the other hand. Results indicate that the picture produced through this non-traditional author co-citation counting contains more coherent author groups and is therefore considerably clearer. However, this picture represents fewer specialties in the research field being studied than that produced through the traditional first-author co-citation counting when the same number of top-ranked authors is selected and analyzed. Reasons for these effects are discussed
Variations on the Author
Get PDF“Variations on the Author” discusses two of Eduardo Coutinho’s recent films (Um Dia na Vida, from 2010, and Últimas Conversas, posthumously released in 2015) and their contribution to the general question of documentary authorship. The director’s filmography is characterized by a consistent yet self-effacing form of authorial self-inscription: Coutinho often features as an interviewer that rather than express opinions propels discourses; an interviewer that is good at listening. This mode of self-inscription characterizes him as an author who is not expressive but who is nonetheless markedly present on the screen. In Um Dia na Vida, however, Coutinho is completely absent form the image, while Últimas Conversas, on the contrary, includes a confessional prologue that moves the director from the margins to the center of his films. This article examines the ways in which these works stand out in the filmography of a director who offers new insights into the notion of cinematic authorship
Appropriate Similarity Measures for Author Cocitation Analysis
Get PDFWe provide a number of new insights into the methodological discussion about author cocitation analysis. We first argue that the use of the Pearson correlation for measuring the similarity between authors’ cocitation profiles is not very satisfactory. We then discuss what kind of similarity measures may be used as an alternative to the Pearson correlation. We consider three similarity measures in particular. One is the well-known cosine. The other two similarity measures have not been used before in the bibliometric literature. Finally, we show by means of an example that our findings have a high practical relevance.information science;Pearson correlation;cosine;similarity measure;author cocitation analysis
Isolation And Characterization Of Isolectins From Talisia Esculenta Seeds
No full textFour isolectins (TEL-I, TEL-II, TEL-III and TEL-IV) were isolated from seeds of Talisia esculenta by reverse-phase high-performance liquid chromatography. RP-HPLC was performed on a u-Bondapack C18 column (0.78 cm X 30 cm) (Waters 991-PDA system) at room temperature. Rechromatography of the four fractions on a C18 column under the same conditions yielded lectins with two dissimilar subunits (M r 20 kDa and 40 kDa) bound noncovalently. The isolectins showed very similar characteristics, such as molecular masses, N-terminal sequences, and hemagglutinating activity, but differed in their isoelectric points and in inhibition by carbohydrates. © 2001 Plenum Publishing Corporation.206495500Abrecht, H., Wattiez, R., Ruysschaert, J.-M., Homblé, F., (2000) Plant Physiol., 124, pp. 1181-1190Animashaun, T., Togun, R.A., Hughes, R.C., (1994) Glycoconjugate J., 11, pp. 299-303Anuradha, P., Bhide, S.V., (1999) Phytochemistry, 52, pp. 751-758Barbieri, L., Falasca, A., Franceschi, C., Licastro, F., Rossi, C.A., Stirpe, F., (1983) Biochem. J., 215, pp. 433-439Blum, H., Beier, H., Gross, H.J., (1987) Electrophoresis, 8, pp. 93-99Cavada, B.S., Santos, C.F., Granjeiros, T.B., Nunes, E.P., Sales, P.V.P., Ramos, R.L., Sousa, F.A.M., Calvete, J.J., (1998) Phytochemistry, 49, pp. 675-680Datta, P.K., Figueroa, M.O.R., Lajolo, F.M., (1993) J. Agric. Food Chem., 41, pp. 1851-1855Dubois, M., Gilles, K.A., Hamilton, J.K., Rebers, P.A., Smith, F., (1956) Anal. Chem., 28, pp. 350-356Eloumani, H., Bladier, D., Caruelle, D., Courty, J., Joubert, R., Caron, M., (1990) Int. J. Biochem., 22, pp. 539-544Freire, M.G.M., Gomes, V.M., Corsini, R.E., Machado, O.L.T., De Simone, S.G., Novello, J.C., Marangoni, S., Macedo, M.L.R., Plant Physiol. Biochem., , in pressHarata, K., Muraki, M., (2000) J. Mol. Biol., 297, pp. 673-681Kilpatrick, D.C., Weston, J., Urbaniak, S.J., (1983) Anal. Biochem., 134, pp. 205-209Laemmli, U.K., (1970) Nature, 227, pp. 680-689Machuka, J.S., Okeola, O.G., Van Damme, J.M., Chrispeels, M.J., Leuven, F.V., Peumans, W.J., (1999) Phytochemistry, 51, pp. 721-728Matsumoto, I., Koyama, T., Kitagaki-Ogawa, H., Seno, N., (1987) J. Chromatog., 400, pp. 77-81Ooi, L.S.M., Ng, T.B., Sun, S.S.M., Ooi, V.E.C., (2000) J. Protein Chem., 19, pp. 163-168Pérez, G., (1998) Int. J. Biochem. Cell Biol., 30, pp. 843-853Pratt, R.C., Singh, N.K., Shade, R.E., Murdock, L.L., Bressan, R.A., (1990) Plant Physiol., 93, pp. 1453-1459Rüdiger, H., (1997) Glycosciences, Status and Perpectives, 2, pp. 415-438. , H-J. Gabius and S. Gabius (Eds): London, Chapman & Hall, WeinheimRüdiger, H., (1998) Acta Anat., 161, pp. 130-152Santos-de-Oliveira, R., Dias-Baruffi, M., Thomaz, S.M.O., Beltramini, L.M., Roque-Barreira, M.C., (1994) J. Immunol., 22, pp. 1798-1807Suzuki, T., Takagi, T., Furukohri, T., Kawamura, K., Nakauchi, M., (1990) J. Biol. Chem., 265, pp. 1274-1281Wongkham, S., Wongkham, C., Boonsiri, P., Simasathiansophon, S., Trisonthi, C., Atisook, K., (1995) Phytochemistry, 40, pp. 1331-133
Dispelling the Myths Behind First-author Citation Counts
Get PDFWe conducted a full-scale evaluative citation analysis study of scholars in the XML research field to explore just how different from each other author rankings resulting from different citation counting methods actually are, and to demonstrate the capability of emerging data and tools on the Web in supporting more realistic citation counting methods. Our results contest some common arguments for the continued
use of first-author citation counts in the evaluation of scholars, such as high correlations between author rankings by first-author citation counts and other citation
counting methods, and high costs of using more realistic citation counting methods that are not well-supported by the ISI databases. It is argued that increasingly available digital full text research papers make it possible for citation analysis studies to go beyond what the ISI databases have directly supported and to employ more
sophisticated methods
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