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Selvakumar T.,Nataraju B.,Chandrasekharan K.,Sharma S. D.,Balavenkatasubbaiah M.,Sudhakara Rao P.,Thiagarajan V.,Dandin S. B. Korean Society of Sericultural Science 2005 International Journal of Industrial Entomology Vol.11 No.1
While observing silkworm larval samples received from field, microsporidian spores formed within the haemocytes of silkworm haemolymph were observed. The spores of microsporidian sp. were purified and characterized for morphological characters viz., size, shape as well as serological affinity with different Nosema spp. (M$_{11}$ and M$_{12}$). The infectivity of the isolated spores to silkworm was also studied. The microsporidian sp. was found to be highly pathogenic to silkworm, B. mori. The isolated microsporidian sp. was designated as NIK-5hm, which formed ovocylindrical spore in the haemocytes of silkworm and differed in spore size (length, 4.55 $\mu$m & width, 2.10 $\mu$m) and shape from Nosema bombycis (NIK-ls), NIK-2r (Nosema sp. Mysore [3.6 & 2.8 $\mu$m]), NIK-3h (Nosema sp. M$_{11}$ [3.8 & 1.8 $\mu$m]), NIK-4m (Nosema sp. M$_{12}$ [5.0 & 2.1 $\mu$m]) and Lb$_{ms}$ (Nosema sp. in Lamerine breed of silkworm [4.36 & 2.14]). In immonological test (Latex agglutination test), the isolated microsporidian spores did not react with antibody sensitized latex particles of N. bombycis, M$_{11}$, M$_{12}$ and Lb$_{ms}$ and thus are different type of microsporidian sp., parasitic to silkworm, Bombyx mori L.
( T. Selvakumar ),( B. Nataraju ),( K. Chandrasekharan ),( S. D. Sharma ),( M. Balavenkatasubbaiah ),( P. Sudhakara Rao ),( V. Thiagarajan ),( S. B. Dandin ) 한국잠사학회 2005 International Journal of Industrial Entomology Vol.11 No.1
While observing silkworm larval samples received from field, microsporidian spores formed within the haemocytes of silkworm haemolymph were observed. The spores of microsporidian sp. were purified and characterized for morphological characters viz., size, shape as well as serological affinity with different Nosema spp. (M11 and M12). The infectivity of the isolated spores to silkworm was also studied. The microsporidian sp. was found to be highly pathogenic to silkworm, B. mori. The isolated microsporidian sp. was designated as NIK-5hm, which formed ovocylindrical spore in the haemocytes of silkworm and differed in spore size (length, 4.55 μm & width, 2.10 μm) and shape from Nosema bombycis (NIK-1s), NIK-2r (Nosema sp. Mysore [3.6 & 2.8 μm]), NIK-3h (Nosema sp. M11 [3.8 & 1.8 μm]), NIK-4m (Nosema sp. M12 [5.0 & 2.1 μm]) and Lb㎳ (Nosema sp. in Lamerine breed of silkworm [4.36 & 2.14]). In immonological test (Latex agglutination test), the isolated microsporidian spores did not react with antibody sensitized latex particles of N. bombycis, M11, M12 and Lb㎳ and thus are different type of microsporidian sp., parasitic to silkworm, Bombyx mori L.
Prabhakar, M. N.,Sudhakara, P.,Subha, M. C. S.,Rao, K. Chowdoji,Song, Jung Il Taylor Francis 2015 Polymer-Plastics Technology and Materials Vol.54 No.16
<P>Nanocomposite hydrogels were prepared through a blend solution of poly(lactic acid) and poly(N-isopropylacrylamide)-co-acrylamide via free radical polymerization. Plant extractions were used for the synthesis of Ag nanoparticles to study the antibacterial activity of the hydrogels. Similarly, 5-Fluorouracil drug was loaded through both in situ and ex situ methods to study thecontrolled release profiles. The nanocomposite hydrogels were characterized by ultraviolet-visible spectroscopy, Fourier transform infrared spectroscopy, Thermo gravimetric analysis - Differential scanning calorimetry (TGA-DSC), X-ray diffractometer, scanning electron microscopy, and transmission electron microscope. The dissolution and the agar diffusion test were performed to evaluate the drug release and antibacterial activity, respectively. The results suggested that the fabricated nanocomposite hydrogels can be used as a promising candidate for dual functions in biomedical applications.</P>
Begum, A.Naseema,Rekha, M.,Ahsan, M.M.,Rao, P.Sudhakara Korean Society of Sericultural Science 2000 International Journal of Industrial Entomology Vol.1 No.2
To evolve silkworm hybrids with higher survival and better cocoon characters, evaluation of semen hybrids in the laboratory (short-listed out of 143 hybrids) resulted in the identification of two promising hybrids, A3${\tines}$935 E (HSP1) and A3${\tines}$916 B (HSP2). The hybrids were evaluated at three different Regional Sericultural Research Stations of Central Silk Board during 1997-1998 and also tested with the farmers along with two control hybrids, KAxNB4D2 and PMxNB4D2. Evaluation of the hybrids indicated that these hybrids can be reared in all the seasons, especially during summer season. These hybrids show shorter larval duration (22 days 17 hrs against 23 days in control KAxNB4D2 and better cocoon characters as compared to the crossed breeds PM ${\tines}$NB4D2).
GMM Rao,ChV Rao,M. Sudhakara,M M Pandey,ASK Rawat,A Sirwaikar,AB Joshi 한국생약학회 2004 Natural Product Sciences Vol.10 No.1
The fresh fruit juice powder of Coccinia indica W.&A., (Cucurbitaceae, CJP) was studied for the possible activities of antiinflammatory and antinociceptive to rationalize the folkloric use of the plant juice as rasayana. CJP at the doses of 50-200 mg/kg caused a significant (P<0.05 to P<0.001) inhibition of paw edema induced by λ carrageenin (1%) and histamine (10−3 g/ml, 0.1 ml) in rats. The effect was comparable to the standard cycloxygenase inhibitor brufen at 100 mg/kg and protective percentages were 63.41% and 65.78% respectively. Administration of CJP (50-200 mg/kg) exhibited a moderate increase of the pain threshold on analgesy-meter induced mechanical pain. However CJP significantly prevented the writhing induced by acetic acid in mice and the percentages of inhibitions were 16.98%-35.47%, which is equivalent to 36.67% produced by brufen. These data indicate that the fruit juice of Coccinia indica rationalizes the traditional system of medicine.
P. Sudhakara Rao,R. K. Datta,K. M. Vijaya Kumari,A. K. Palit,S. A. Bhat 한국잠사학회 2004 International Journal of Industrial Entomology Vol.8 No.1
The combining abilities in the 5 newly evolved thermo tolerant breeds viz., SR6, SR7, SR8 SR9 and SR10 of silkworm Bombyx mori L. and their 15 hybrids were made in a line ´ tester crossing programme. Data were analysed for seven quantitative traits i.e., pupation rate, cocoon yield, cocoon weight, cocoon shell weight, cocoon shell ratio, filament length and raw silk percentage under optimum room temperature (25 ± 1oC) conditions (In case of high temperature (36 ± 1oC) stress conditions five economic traits except filament length and raw silk percentage) with 3 widely adapted testers i.e., KA, CSR2 and CC1 as lines (females) and testers (males) respectively. The performance at high temperature and low humidity conditions are only taken into consideration for selecting the best lines/ hybrids. Among the lines SR6 exhibited positive General combining ability (GCA) effects for pupation rate, cocoon yield, cocoon weight and cocoon shell ratio traits, followed by SR7 for pupation rate, cocoon yield and cocoon shell weight and cocoon shell ratio. Among testers, KA exhibited positive GCA effects for two quantitative traits cocoon yield, cocoon weight and CSR2 for cocoon shell weight and cocoon shell ratio under adverse temperature conditions. The hybrid SR6 ´ CC1 and SR7 ´ CSR2 exhibited significant positive Specific combining ability (SCA) effects for majority of the traits in high temperature stress conditions of rearing. The better parent value of heterosis (Heterobeltiosis) was exhibited by the hybrid SR6 ´ CC1 for pupation rate, cocoon yield, cocoon weight and cocoon shell weight and SR7 × CSR2 for all the traits evaluated under high temperature conditions. Based on the results, the lines SR6 and SR7 was judged as best combiners and the hybrids SR6 ´ CC1 and SR7 ´ CSR2 can be selected
( P. Sudhakara Rao ),( B. Nataraju ),( M. Balavenkatasubbaiah ),( S. B. Dandin ) 한국잠사학회 2006 International Journal of Industrial Entomology Vol.13 No.2
Combining ability and hybrid vigour analysis was carried out in hybrids between newly developed non-susceptible lines to BmDNV1 and popular bivoltine breeds for certain quantitative traits viz. Pupation rate, Cocoon yield, Cocoon weight, Cocoon shell weight and Cocoon shell ratio, Survival rate against BmIFV and BmNPV. General combining ability (GCA) effects revealed that among the lines CSR2DR was found good general combiner exhibiting significant GCA effects for six characters, out of seven traits evaluated. Among testers CSR28DR was found as good combiner exhibiting significant GCA effects for six traits. Out of 36 hybrids made between resistant × resistant, resistant × susceptible and susceptible × susceptible breeds, one hybrid CSR21DR × CSR28DR exhibited significant SCA effects for six traits. The selected hybrid CSR21DR × CSR28DR also exhibited significant positive heterosis and heterobeltiosis expressions for maximum traits and could be exploited as commercial silkworm hybrid resistant to important viral diseases.