caa a22 4500 388105631 CHVBK 20180307125336.0 cr unu---uuuuu 161130e199909 xx s 000 0 eng 10.1017/S1742758400019512 doi S1742758400019512 pii (NATIONALLICENCE)cambridge-10.1017/S1742758400019512 Evaluation of Insecticidal Proteins of Microbial and Plant Origin Against Insect Pests of Rice [Elektronische Daten] An artificial diet developed for the rice leaffolder, Cnaphalocrocis medinalis was used in a bioassay of endotoxin proteins from Bacillus thuringiensis (Bt) strains and plant-derived protease inhibitors against the leaffolder, C. medinalis, and the yellow stemborer, Scirpophaga incertnlas. Of the 14 samples of endotoxins derived from different strains of Bt (sub-species kurstaki and sphericus) tested, 5 samples — BT 29, BT 47, BT 61, BT 70 and HD-1— were effective against leaffolder larvae in preliminary tests. Subsequent tests indicated HD-1 to be the most effective against the leaffolder, followed by BT 61 and BT 70, with non-overlapping 95% fiducial limits of LC50 values (3.9,18.2 and 41.1 mg protein/kg diet, respectively). Mortality was observed after 48 h of release of neonate larvae. In contrast, the two protease inhibitors tested, namely soybean trypsin inhibitor (SBTI) and jackfruit seed trypsin inhibitor (JSTI) were less lethal to the two pests. The latter was more effective against the yellow stemborer at much lower concentrations. Copyright © ICIPE 1999 insecticidal proteins nationallicence jackfruit seed trypsin inhibitor nationallicence soybean trypsin inhibitor nationallicence crystal endotoxin proteins nationallicence Bacillus thuringiensis strains nationallicence Cnaphalocrocis medinalis nationallicence Scirpophaga incertulas nationallicence protéine insecticide nationallicence trypsine inhibitrice obtenue de soja nationallicence trypsine inhibitrice obtenue du jaquier nationallicence cristal d'endotoxine protéique nationallicence souches de Bacillus thuringiensis nationallicence Cnaphalocrocis medinalis nationallicence Scirpophaga incertulas nationallicence Bentur J. S. Directorate of Rice Research, Rajendranagar, Hyderabad 500 030, A.P., India Sarma N. P. Directorate of Rice Research, Rajendranagar, Hyderabad 500 030, A.P., India Bhatnagar Raj International Centre for Genetic Engineering & Biotechnology, Aruna Asaf Ali Marg, New Delhi, 110067, India Sudha C. V. Department of Biochemistry, Andhra University, Visakhapatnam 530 003, A.P., India Sivaprasad D. Department of Biochemistry, Andhra University, Visakhapatnam 530 003, A.P., India International Journal of Tropical Insect Science Cambridge University Press 19/2-3(1999-09), 223-228 1742-7584 19:2-3<223 1999 19 JTI https://doi.org/10.1017/S1742758400019512 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1017/S1742758400019512 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Bentur J. S. Directorate of Rice Research, Rajendranagar, Hyderabad 500 030, A.P., India NATIONALLICENCE 700 1- Sarma N. P. Directorate of Rice Research, Rajendranagar, Hyderabad 500 030, A.P., India NATIONALLICENCE 700 1- Bhatnagar Raj International Centre for Genetic Engineering & Biotechnology, Aruna Asaf Ali Marg, New Delhi, 110067, India NATIONALLICENCE 700 1- Sudha C. V. Department of Biochemistry, Andhra University, Visakhapatnam 530 003, A.P., India NATIONALLICENCE 700 1- Sivaprasad D. Department of Biochemistry, Andhra University, Visakhapatnam 530 003, A.P., India NATIONALLICENCE 773 0- International Journal of Tropical Insect Science Cambridge University Press 19/2-3(1999-09), 223-228 1742-7584 19:2-3<223 1999 19 JTI CC0 http://creativecommons.org/publicdomain/zero/1.0 nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-cambridge