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1. Antibiosis mechanism of resistance to pod borer, Helicoverpa armigera in wild relatives of chickpea

Author:
S. K. Lanka,   et al.   ; H. C. Sharmad; G. Pampapathy; T. J. Ridsdill-Smith;     Show all 4 Authors
Source:
Euphytica 2005 v.142 no.1-2 pp. 107-117
ISSN:
0014-2336
Subject:
Cicer; wild relatives; antibiosis; pest resistance; Helicoverpa armigera; insect pests; plant genetic resources; plant breeding; vegetative growth; flowering; crop damage
Abstract:
... The pod borer, Helicoverpa armigera, is one of the major constraints to chickpea production worldwide. The levels of resistance to pod borer in the cultivated chickpea germplasm are moderate, and therefore, we studied the reaction of 32 accessions of wild relatives of chickpea for resistance to H. armigera under greenhouse conditions. Accessions ICC 17257, IG 70002, IG 70003, IG 70012, (Cicer biju ...
DOI:
10.1007/s10681-005-1041-5

2. Exploitation of wild Cicer reticulatum germplasm for resistance to Helicoverpa armigera

Author:
Lanka, S.K.,   et al.   ; Sharma, H.C.; Pampapathy, G.; Ridsdill-Smith, T.J.;     Show all 4 Authors
Source:
Journal of economic entomology 2005 v.98 no.6 pp. 2246-2253
ISSN:
0022-0493
Subject:
plant damage; germplasm evaluation; genetic resistance; wild relatives; Helicoverpa armigera; chickpeas; insect development; Cicer arietinum; pest resistance; mortality; India
Abstract:
... In the absence of high levels of resistance to Helicoverpa armigera (Hubner) in the cultivated germplasm of chickpea, we evaluated accessions of Cicer spp. mostly Cicer reticulatum Ladzinsky, for resistance to this important pest. Under multichoice conditions in the field, 10 accessions showed lower leaf damage and lower numbers of eggs, larvae, or both of H. armigera. Of these, IG 69960, IG 72934 ...
DOI:
10.1093/jee/98.6.2246
PubMed:
16539156

3. A Multiphasic Typing Approach to Subtype Streptococcus Equi Subspecies Equi

Author:
Saraswathi Lanka,   et al.   ; Luke B. Borst; Sheila K. Patterson; Carol W. Maddox;     Show all 4 Authors
Source:
Journal of veterinary diagnostic investigation v.22 no.6 pp. 928-936
ISSN:
1040-6387
Subject:
Streptococcus equi; abscess; genes; genotyping; guanine; horses; polymerase chain reaction; pulsed-field gel electrophoresis; quarantine; single nucleotide polymorphism; strangles; Illinois
Abstract:
... The objective of the present investigation was to differentiate between strains of Streptococcus equi subspecies equi implicated in abscess formation in vaccinated horses. Streptococcus equi isolates recovered from clinical specimens associated with equine strangles cases submitted to the University of Illinois Veterinary Diagnostic Laboratory were compared with S. equi isolates representing at le ...
DOI:
10.1177/104063871002200612
PubMed:
21088177

4. Acute toxicity of chlorantraniliprole to non-target crayfish (Procambarus clarkii) associated with rice-crayfish cropping systems

Author:
Lanka, Srinivas K.,   et al.   ; Barbee, Gary C.; McClain, W. Ray; Stout, Michael J.;     Show all 4 Authors
Source:
Pest management science 2010 v.66 no.9 pp. 996-1001
ISSN:
1526-498X
Subject:
rice; nontarget organisms; insect pests; insecticides; acute toxicity; seeds; animal behavior; Oryza sativa; Lissorhoptrus oryzophilus; plant pests; no observed adverse effect level; Procambarus clarkii; mortality; crayfish culture; crayfish; lethal concentration 50; oral administration; adverse effects; chronic exposure
Abstract:
... BACKGROUND: Chlorantraniliprole, a novel anthranilic diamide insecticide, was recently introduced into the United States where rice-crayfish crop rotations are practiced to control rice water weevil (Lissorhoptrus oryzophilus Kuschel) infestations. Chlorantraniliprole has high margins of mammalian safety and excellent insecticidal efficacy, but its toxicity to non-target crayfish is uncertain. In ...
DOI:
10.1002/ps.1972
PubMed:
20730992

5. Bioethanol fermentation of concentrated rice straw hydrolysate using co-culture of Saccharomyces cerevisiae and Pichia stipitis

Author:
Lanka Sateesh,   et al.   ; K. Srilekha Yadav; Shaik Naseeruddin; G. Sai Prashanthi; L. Venkateswar Rao;     Show all 5 Authors
Source:
Bioresource technology 2011 v.102 no.11 pp. 6473-6478
ISSN:
0960-8524
Subject:
Saccharomyces cerevisiae; Scheffersomyces stipitis; acid hydrolysis; bioethanol; coculture; distillation; ethanol; feedstocks; fermentation; furans; hexoses; hydrolysates; pentoses; phenols; rice straw; sulfuric acid
Abstract:
... Rice straw is one of the abundant lignocellulosic feed stocks in the world and has been selected for producing ethanol at an economically feasible manner. It contains a mixture of sugars (hexoses and pentoses). Biphasic acid hydrolysis was carried out with sulphuric acid using rice straw. After acid hydrolysis, the sugars, furans and phenolics were estimated. The initial concentration of sugar was ...
DOI:
10.1016/j.biortech.2011.03.019
PubMed:
21470850

6. Evaluation of a commercially available modified-live Streptococcus equi subsp equi vaccine in ponies

Author:
Lanka, Saraswathi,   et al.   ; Borst, Luke B.; Patterson, Sheila K.; Barger, Anne M.; Fredrickson, Richard L.; Maddox, Carol W.;     Show all 6 Authors
Source:
American journal of veterinary research 2011 v.72 no.8 pp. 1130-1138
ISSN:
0002-9645
Subject:
Streptococcus equi subsp. equi; abscess; antibodies; antigens; horses; immunoglobulin G; lymph nodes; morbidity; polymerase chain reaction; secondary immunization; tissues; vaccination; vaccines
Abstract:
... Objective—To evaluate a commercially available modified-live Streptococcus equi subsp equi vaccine for safety and persistence in vaccinated ponies and to detect recombination or reversion events in the vaccine strain. Animals—5 ponies that were 1.5 to 8 years old (group 1) and 4 ponies that were 6 months old (group 2). Procedures—Ponies were vaccinated, with a subsequent booster vaccination 2 to 3 ...
DOI:
10.2460/ajvr.72.8.1130

7. The influence of carbon nanotube (CNT) morphology and diameter on the processing and properties of CNT-reinforced aluminium composites

Author:
S. Lanka,   et al.   ; A.M.K. Esawi; K. Morsi; A. Sayed; M. Taher;     Show all 5 Authors
Source:
Composites 2011 v.42 no.3 pp. 234-243
ISSN:
1359-835X
Subject:
aluminum; aluminum oxide; carbon nanotubes; cold; extrusion; hardness; milling; nanoparticles; powders; transmission electron microscopy
Abstract:
... Ball milling was used to disperse MWCNTs of two different morphologies (stiff and straight vs. bent and entangled) and diameters (very large diameter and 3.5 times smaller diameter) in aluminium powders, which were subsequently hot consolidated by hot extrusion. Characterization of the produced composites revealed that the CNT morphology plays an important role in affecting dispersion. It was foun ...
DOI:
10.1016/j.compositesa.2010.11.008

8. Facile synthesis of novel dispiroheterocylic derivatives through cycloaddition of azomethine ylides with acenaphthenone-2-ylidine ketones

Author:
Srinu Lanka,   et al.   ; Sathiah Thennarasu; Paramasivan T. Perumal;     Show all 3 Authors
Source:
Tetrahedron letters 2012 v.53 no.52 pp. 7052-7055
ISSN:
0040-4039
Subject:
chemical reactions; chemical structure; ketones; methanol
Abstract:
... The regioselective synthesis of a series of novel dispiropyrrolidines and dispiropyrrolizidines has been accomplished through intermolecular 1,3-dipolar cycloaddition of azomethine ylides obtained from 1,2-diones like isatin and acenaphthenequinone with acenaphthenone-2-ylidine ketone dipolarophiles in methanol under reflux conditions. ...
DOI:
10.1016/j.tetlet.2012.10.061

9. Canine ocular onchocercosis in the United States is associated with Onchocerca lupi

Author:
Saraswathi Lanka,   et al.   ; Amber L. Labelle; Carol W. Maddox; Joshua B. Daniels; Therese E. Eggett; Richard R. Dubielzig; Philippe Labelle;     Show all 7 Authors
Source:
Veterinary parasitology 2013 v.193 no.1-3 pp. 297-301
ISSN:
0304-4017
Subject:
NAD (coenzyme); Onchocerca lienalis; cytochrome-c oxidase; dogs; genes; nucleotide sequences; onchocerciasis; polymerase chain reaction; United States
Abstract:
... Canine ocular onchocerciasis has a worldwide distribution and has been associated in Europe with Onchocerca lupi based on morphologic and molecular analysis. In the United States, canine ocular onchocerciasis is reportedly associated with Onchocerca lienalis. This association is based solely on histopathologic examination of ocular tissues. The purpose of this study was to use molecular analysis o ...
DOI:
10.1016/j.vetpar.2012.12.002
PubMed:
23276598

10. N-Alkylation of amines with alcohols over nanosized zeolite beta

Author:
Lanka Satyanarayana,   et al.   ; Marri Mahender Reddy; Macharla Arun Kumar; Peraka Swamy; Mameda Naresh; Kodumuri Srujana; Akula Venugopal; Nama Narender;     Show all 8 Authors
Source:
Green chemistry 2013 v.15 no.12 pp. 3474-3483
ISSN:
1463-9270
Subject:
alcohols; alkylation; amines; catalysts; catalytic activity; coproducts; green chemistry; imines; nanomaterials; zeolites
Abstract:
... Direct N-alkylation of amines with alcohols was successfully performed by using nanosized zeolite beta, which showed the highest catalytic activity among other conventional zeolites. This method has several advantages, such as eco-friendliness, moderate to high yields, and simple work-up procedure. The catalyst was successfully recovered and reused without significant loss of activity and only wat ...
DOI:
10.1039/c3gc41345d

11. Systemic effects of thiamethoxam and chlorantraniliprole seed treatments on adult Lissorhoptrus oryzophilus (Coleoptera: Curculionidae) in rice

Author:
Srinivas K Lanka,   et al.   ; James A Ottea; Jeffrey A Davis; Amy B Hernandez; Michael J Stout;     Show all 5 Authors
Source:
Pest management science 2013 v.69 no.2 pp. 250-256
ISSN:
1526-498X
Subject:
Lissorhoptrus oryzophilus; adults; enzyme-linked immunosorbent assay; insecticide residues; larvae; leaf area; leaves; lethal dose 50; mortality; rice; seed treatment; seeds; thiamethoxam
Abstract:
... BACKGROUND: Feeding assays using adult rice water weevils and foliage of plants treated as seeds with chlorantraniliprole and thiamethoxam at different rates were conducted to evaluate the systemic adulticidal and feeding effects. Dose–mortality relationships were determined for thiamethoxam seed treatments by combining leaf area lost due to feeding and insecticide residues analyzed by LC/MS/MS. C ...
DOI:
10.1002/ps.3382
PubMed:
22927256

12. Zebrafish (Danio rerio) as a Screen for Attenuation of Lancefield Group C Streptococci and a Model for Streptococcal Pathogenesis

Author:
S. Lanka,   et al.   ; L. B. Borst; S. K. Patterson; M. M. Suyemoto; C. W. Maddox;     Show all 5 Authors
Source:
Veterinary pathology v.50 no.3 pp. 457-467
ISSN:
1544-2217
Subject:
Danio rerio; Streptococcus; acute phase proteins; alpha chemokines; animal pathology; antimicrobial peptides; bacteria; cell-mediated immunity; coagulation; comparative genomic hybridization; edema; fish; gene expression; gene expression regulation; histology; inflammation; live vaccines; lymph nodes; macrophages; models; necrosis; pathogenesis; respiratory system; sequence deletion; spleen; transcription (genetics); virulence
Abstract:
... Group C streptococci are highly contagious pyogenic bacteria responsible for respiratory tract, lymph node, urogenital tract, and wound infections. Wild-type strains of Streptococcus equi ssp equi (S. equi) and Streptococcus equi ssp zooepidemicus (S. zoo) as well as a commercially available modified live vaccine strain of S. equi were evaluated for virulence in zebrafish. Survival times, histolog ...
DOI:
10.1177/0300985811424731

13. Evaluation of neonicotinoids as pyrethroid alternatives for rice water weevil management in water-seeded rice

Author:
Srinivas K. Lanka,   et al.   ; Michael J. Stout; James A. Ottea;     Show all 3 Authors
Source:
Crop protection 2014 v.56 pp. 37-43
ISSN:
0261-2194
Subject:
Lissorhoptrus oryzophilus; adults; aquatic organisms; bioassays; clothianidin; dinotefuran; foliar application; greenhouse experimentation; insect pests; lambda-cyhalothrin; larvae; larvicides; leaves; pyrethrins; rice; risk; toxicity; United States
Abstract:
... The rice water weevil (RWW), Lissorhoptrus oryzophilus (Kuschel) (Coleoptera: Curculionidae), is the most destructive insect pest of rice in the United States. Water-seeded rice, which is flooded at an earlier stage of crop development than drill-seeded rice, is at heightened risk of loss from root-feeding RWW larvae. Pyrethroids, the most widely used group of foliar insecticides for RWW control, ...
DOI:
10.1016/j.cropro.2013.09.007

14. Lewis Acid Catalyzed Unprecedented [3 + 2] Cycloaddition Yields 3,3′-Pyrrolidinyldispirooxindoles Containing Four Contiguous Chiral Stereocenters with Two Contiguous Quaternary Spirostereocenters

Author:
Srinu Lanka,   et al.   ; Suman Koorathota; Thennarasu Sathiah;     Show all 3 Authors
Source:
Organic letters 2014 v.16 no.14 pp. 3732-3735
ISSN:
1523-7052
Subject:
Lewis acids; catalytic activity; chemical structure; cycloaddition reactions; ethyleneimine
Abstract:
... A Lewis acid catalyzed domino reaction cascades through azide–alkene cycloaddition, rearrangement, aziridine ring opening, and azomethine cycloaddition with a parent dipolarophile, resulting in 3,3′-pyrrolidinyldispirooxindoles containing four contiguous chiral stereocenters with two contiguous quaternary spirostereocenters. ...
DOI:
10.1021/ol501547p

15. Regioselective synthesis of novel dispiropyrrolidine and dispiropyrrolizidine oxindole derivatives via azomethine ylide specific [3+2]-cycloaddition

Author:
Srinu Lanka,   et al.   ; Sathiah Thennarasu; Paramasivan T. Perumal;     Show all 3 Authors
Source:
RSC advances 2014 v.4 no.5 pp. 2263-2266
ISSN:
2046-2069
Subject:
X-ray diffraction; acetates; cycloaddition reactions; nuclear magnetic resonance spectroscopy; regioselectivity; stereochemistry; stereoselectivity
Abstract:
... Structurally complex spiro analogues of indenoquinoxaline have been synthesized via the cycloaddition reaction of azomethine ylides with alkyl indeno[2,1-b]quinoxalin-11-ylidene acetate dipolarophiles in a highly regioselective and stereoselective manner. The structure and relative stereochemistry of the cycloadducts were confirmed using ¹H and ¹³C-NMR spectroscopic methods, and single crystal X-r ...
DOI:
10.1039/c3ra44953j

16. Stoichiometry-controlled cycloaddition of azomethine ylide with dipolarophiles: chemoselective and regioselective synthesis of bis- and tris-spirooxindole derivatives

Author:
Srinu Lanka,   et al.   ; Sathiah Thennarasu; Paramasivan T. Perumal;     Show all 3 Authors
Source:
Tetrahedron letters 2014 v.55 no.16 pp. 2585-2588
ISSN:
0040-4039
Subject:
X-radiation; chemical structure; chemoselectivity; cycloaddition reactions; nuclear magnetic resonance spectroscopy; organic compounds; regioselectivity; spectral analysis
Abstract:
... A new series of bis- and tris-spirooxindole derivatives have been synthesized by controlling the molar equivalent of in situ generated azomethine ylides in [3+2]-cycloaddition reactions with dipolarophiles. The structural elucidation on the basis of IR, ¹H NMR, ¹³C NMR, and mass spectral data of these compounds established the highly chemoselective and regioselective formation of spirooxindole der ...
DOI:
10.1016/j.tetlet.2014.02.121

17. A socio-psychological model for analyzing climate change adaptation: A case study of Sri Lankan paddy farmers

Author:
Lanka Thabrew,   et al.   ; Heather Barnes Truelove; Amanda R. Carrico;     Show all 3 Authors
Source:
Global environmental change 2015 v.31 pp. 85-97
ISSN:
0959-3780
Subject:
agricultural education; case studies; climate change; developing countries; drought; extension education; farmers; health promotion; irrigation; models; motivation; paddies; risk perception; villages; water management; water resources; Sri Lanka
Abstract:
... Farmers in developing countries are among the most vulnerable to climate change effects, particularly drought. However, little research has focused on the psychological mechanisms that facilitate or constrain agricultural adaptation behavior. Drawing on the protection motivation theory from health promotion research, we propose a risk, coping, and social appraisal (RCSA) model of adaptation decisi ...
DOI:
10.1016/j.gloenvcha.2014.12.010

18. Comparison of the Effects of Neonicotinoids and Pyrethroids Against Oebalus pugnax (Hemiptera: Pentatomidae) in Rice

Author:
Lanka Srinivas,   et al.   ; Blackman Bryce; Hummel Natalie; Way Mo; Stout Michael;     Show all 5 Authors
Source:
Florida entomologist 2015 v.98 no.1 pp. 18-26
ISSN:
0015-4040
Subject:
Oebalus pugnax; dinotefuran; mechanism of action; rice; pesticide application; prices; farmers; lambda-cyhalothrin; pyrethrins; surveys; testing; pests; nymphs; field experimentation; mortality; adults; Texas
Abstract:
... The rice stink bug, Oebalus pugnax (F.) (Hemiptera: Pentatomidae), is an economically important late-season pest of rice in the southern United States. Stink bug feeding results in yield reduction and discounted purchase price due to broken or discolored (“pecky”) rice grains. The primary tactic for O. pugnax management is the application of insecticides once adults reach an action threshold. Rece ...
DOI:
10.1653/024.098.0104

19. Identification of Cytauxzoon felis infection in domestic cats from southern Illinois

Author:
Saraswathi Lanka,   et al.   ; Amy L MacNeill; Anne M Barger; Melissa C Skowronski; Carol W Maddox;     Show all 5 Authors
Source:
Journal of feline medicine and surgery v.17 no.12 pp. 1069-1072
ISSN:
1532-2750
Subject:
Cytauxzoon felis; DNA; cat diseases; cats; cytosine; erythrocytes; genome; heterozygosity; histology; internal transcribed spacers; schizonts; sequence analysis; signs and symptoms (animals and humans); thymine; Illinois
Abstract:
... The objective of this study was to document Cytauxzoon felis infection in domestic cats from southern Illinois. Diagnosis of cytauxzoonosis was based upon clinical signs of illness and detection of piroplasms within erythrocytes on peripheral blood smears or schizonts in internal organs consistent with Cytauxzoon infection. Additionally, genomic DNA was extracted from histologic sections of spleni ...
DOI:
10.1177/1098612X14567158

20. Integrating flood depth and plant resistance with chlorantraniliprole seed treatments for management of rice water weevil, Lissorhoptrus oryzophilus (Coleoptera: Curculionidae)

Author:
Srinivas K. Lanka,   et al.   ; David C. Blouin; Michael J. Stout;     Show all 3 Authors
Source:
Insect science 2015 v.22 no.5 pp. 679-687
ISSN:
1672-9609
Subject:
Lissorhoptrus oryzophilus; application rate; cultivars; insecticides; insects; larvae; population; rice; seed treatment; United States
Abstract:
... Chlorantraniliprole seed treatments in rice provide effective suppression of rice water weevil populations in the United States; however, heavy reliance on prophylactic insecticide treatments as a sole strategy could destabilize management programs for this insect. The present research evaluated the compatibility of seed treatments with two other potential management tactics—plant resistance and s ...
DOI:
10.1111/1744-7917.12167