Azocalix[4]pyrrole dyes: Application in dyeing of fibers and their antimicrobial activity     

Vinod K. Jain  Hiren C. Mandalia  Narendar Bhojak 《Fibers and Polymers》2010,11(3):363-371

The dyeing performance of the azocalix[4]pyrrole dyes on fibers like nylon, wool, acrylic, and silk have been determined. Their fastness properties towards light, water, washing, and acid-alkali perspiration have been studied. The position of color in CIELAB coordinates (L*, a*, b*, H, and C*) was assessed. The azocalix[4]pyrrole demonstrated good antimicrobial activity against Escherichia coli, Staphylococcus aureus, and Aspergillus niger. These super molecules exhibit bright shades on fabric with very good fastness properties.  相似文献   

A novel antifungal anthraquinone from seeds of Aegle marmelos Correa (family Rutaceae)     

Bhuwan B. Mishra  Navneet Kishore  Vinod K. Tiwari  Desh D. Singh  Vyasji Tripathi 《Fitoterapia》2010

A new anthraquinone, 1-methyl-2-(3′-methyl-but-2′-enyloxy)-anthraquinone (1) has been isolated from seeds of Aegle marmelos Correa and was characterized on the basis of spectral analysis (UV, IR, ¹H NMR, ¹³C NMR, 2D NMR and mass spectroscopy). The compound exhibited significant antifungal activity against pathogenic strains of Aspergillus species and Candida albicans in disc diffusion assay (MIC value of 6.25 μg/disc), microbroth dilution and percent spore germination inhibition assays (MIC value of 31.25–62.5 μg/ml).  相似文献   

Involvement of antifungal compounds from rockmelon fruit rind (<Emphasis Type="Italic">Cucumis melo</Emphasis> L.) in resistance against the fruit rot pathogen <Emphasis Type="Italic">Fusarium oxysporum</Emphasis> f. sp. <Emphasis Type="Italic">melonis</Emphasis>.     

Vinod Kumar  Robyn McConchie 《European journal of plant pathology / European Foundation for Plant Pathology》2010,126(4):531-540

Fusarium rot caused by Fusarium oxysporum f. sp. melonis, causes significant postharvest losses in rockmelon crops. Although latent infection is often present in the field, symptoms of the disease may not appear until fruit maturity. The susceptibility of different-aged rockmelon fruit cv. “Colorado” was determined by inoculating fruit at different stages of development with a spore suspension of F. oxysporum f. sp. melonis. Disease symptoms appeared first and were more severe in older fruit compared to younger fruit. Disease symptoms on fruit 35 DAA (Days After Anthesis) and 42 DAA appeared within 3 days of inoculation and rapidly covered the fruit within 5 days. In contrast, disease symptoms on fruit 7 DAA appeared 6 days after inoculation and grew slowly. Extraction of antifungal compounds without involving acid hydrolysis from 7 DAA fruit rind did not show antifungal activity on TLC plates. However, hydrolysis of the ethyl acetate fraction resulted in a strong fungal inhibitory zone on agar plates against colonies of F. oxysporum f. sp. melonis. Separation of the hydrolysed crude extracts on TLC plates indicated the presence of two distinct antifungal zones with R_f 0.36 and 0.13 in young fruit 7, 14 and 21 DAA. The area of fungal inhibition of compound R_f 0.36 was greater than that of R_f 0.13 on the TLC plate. Extracts from mature fruit of 35 and 42 DAA did not have detectable levels of antifungal compounds. The decrease in the susceptibility of rockmelon fruit during maturity may be correlated to a decrease in the antifungal compounds in the fruit with maturity.  相似文献   

Cyto-morphological evidence for segmental allopolyploid origin of Teasle gourd (<Emphasis Type="Italic">Momordica subangulata</Emphasis> subsp. <Emphasis Type="Italic">renigera</Emphasis>)     

L. K. Bharathi  Vinod  A. D. Munshi  T. K. Behera  Shanti-Chandrashekaran  J. J. Kattukunnel  A. B. Das  Vishalnath 《Euphytica》2010,176(1):79-85

Teasle gourd [Momordica subangulata Blume subsp. renigera (G. Don) de Wilde, 2n = 56] exhibits morphological characters found in both M. dioica (2n = 28) and M. cochinchinensis (2n = 28). Morphological analysis of M. subangulata subsp. renigera suggests an allopolyploid origin. We present evidence elucidating the genomic relationships between M. dioica, M. cochinchinensis and M. subangulata subsp. renigera. A triploid M. dioica × M. subangulata subsp. renigera hybrid had an average of 12.76 bivalents, 13.84 univalents and 0.88 trivalents at metaphase I, while the M. cochinchinensis × M. subangulata subsp. renigera hybrid had an average of 13.08 bivalents, 12.96 univalents and 0.96 trivalents. F₁ hybrids of the two diploid species (M. dioica × M. cochinchinensis) showed an average of 9.12 bivalents and 9.76 univalents, suggesting that the genomes of these species are only partially homologous. A higher number of bivalents in the triploid hybrids suggests that M. subangulata subsp. renigera is a segmental allopolyploid of M. dioica and M. cochinchinensis and that its genomes have diverged from the parental genomes.  相似文献   

Novel quantitative trait loci for yield and yield related traits identified in Basmati rice (Oryza sativa)     

Ankit Malik  Aruna Kumar  Ranjith Kumar Ellur  Subbaiyan Gopala Krishnan  Kunnummal Kurungara Vinod  Deepshikha Dixit  Mariappan Nagarajan  Prolay Kumar Bhowmick  Haritha Bollinedi  Nagendra Kumar Singh  Ashok Kumar Singh 《Plant Breeding》2023,142(3):327-337

Increasing crop productivity is one of the prime goals of crop breeding research. Rice grain yield is a complex quantitative trait governed by polygenes. Although several QTLs governing grain yield traits have been reported and limited attempts have been made to map QTLs for grain yield parameters in Basmati rice. A population from the cross Sonasal and Pusa Basmati 1121 comprising 352 RILs was generated through the single seed descent method. A total of 12 QTLs governing yield and yield-related traits were mapped on six chromosomes, namely, 1, 2, 3, 7, 8 and 9, of which five QTLs were novel. We identified a novel and robust epistatic QTL (qPH1.1 and qPL1.1) governing plant height and panicle length, flanked by the markers RM5336-RM1 on chromosome 1. The gene encoding brassinosteroid insensitive 1-associated receptor kinase 1 precursor is the putative candidate gene underlying this epistatic QTL. Another novel QTL, qNT3.1, governing tiller number was bracketed to a region of .77 Mb between the markers RM15247 and RM15281 on chromosome 3. Of the 57 annotated gene models, Os03g0437600 encoding alpha/beta-fold hydrolase, a homologous to AtKai2 is a putative candidate gene underlying the novel QTL qNT3.1. The other QTLs such as qDFF1.1 governing days to 50% flowering co-localizes with the gene Ghd7, QTL for plant height qPH1.2 co-localizes with the gene sd1, the QTLs for panicle length co-localizes with FUWA and DEP2, the QTL for tiller number co-localizes with OsRLCK57 and QTLs for thousand-grain weight co-localize with the major gene GS3. The QTLs identified in the current study can be effectively used in marker-assisted selection for developing Basmati rice varieties with a higher yield.  相似文献   

Anaerobic-aerobic treatment of distillery wastes     

S. Shrihari  Vinod Tare 《Water, air, and soil pollution》1989,43(1-2):95-108

In this study an attempt has been made to find a solution to the problem of disposal of distillery effluents through anaerobic followed by aerobic treatment. Accordingly, experimental studies were planned and carried out in two phases. The first phase experimentation was conducted to study the performance of Semicontinuous Fixed Film Anaerobic Reactors (SCFFAR) which simulate Downflow Stationary Fixed Film anaerobic reactors (DSFF) for partial treatment of distillery waste. Second phase experimentation included studies on degradation of anaerobically treated effluent employing semicontinuous aerobic reactors with sludge recycle. The results indicated that the distillery waste should be diluted to bring down the COD to about 50 000 mg L^?1 before the same is treated by stationery fixed film anaerobic reactors and this dilution can be achieved by circulating the treated effluent. Further the reduction of COD beyond 9000 to 10 000 mg L^?1 by anaerobic treatment appears to be uneconomical. Results of second phase of the study show that the aerobic degradation of anaerobically treated effluent can achieve significant COD reduction (approx. 67%). However, reduction of COD of final effluent below 500 mg L^?1 appears to be very difficult. The settling characteristics of the sludge produced in aerobic study depended on the BSRT value and improved with increase in BSRT.  相似文献   

Molecular detection and characterization of Clostridium perfringens toxin genes causing necrotic enteritis in broiler chickens     

Praveen Kumar  N.  Vinod Kumar  N.  Karthik  A. 《Tropical animal health and production》2019,51(6):1559-1569

Tropical Animal Health and Production - A total of 464 samples comprising of cloacal swabs from necrotic enteritis suspected live birds (191), intestinal scrapings from dead birds with symptoms of...  相似文献   

Pharmacokinetics of lincomycin following single intravenous administration in buffalo calves     

Sreedharan Sreeshitha Gouri  Dinakaran Venkatachalam  Vinod Kumar Dumka 《Tropical animal health and production》2014,46(6):1099-1102

Lincomycin 10 mg kg^?1, IV in buffalo calves followed two-compartment open model with high distribution rate constant α (11.2?±?0.42 h^?1) and K ₁₂/K ₂₁ ratio (4.40?±?0.10). Distribution half-life was 0.06?±?0.01 h and AUC was 41.6?±?1.73 μg mL^?1 h. Large Vd_area (1.15?±?0.03 L kg^?1) indicated good distribution of lincomycin in various body fluids and tissues. Peak plasma level of lincomycin (71.8?±?1.83 μg mL^?1) was observed at 1 min as expected by IV route. The elimination half-life and MRT of lincomycin were short (3.30?±?0.08 and 4.32?±?0.11 h, respectively). Lincomycin 10 mg kg^?1 IV at 12-h interval would be sufficient to maintain T?>?MIC above 60 % for bacteria with minimum inhibitory concentrations (MIC) values ≤1.6 μg mL^?1. Favourable pharmacokinetic profile in buffalo calves and a convenient dosing interval suggest that lincomycin may be an appropriate antibacterial in buffalo species for gram-positive and anaerobic bacterial pathogens susceptible to lincomycin.  相似文献   

Influence of 8-methyl-nonenoic acid on capsaicin biosynthesis in in-vivo and in-vitro cell cultures of Capsicum spp     

Narasimha Prasad BC  Gururaj HB  Kumar V  Giridhar P  Parimalan R  Sharma A  Ravishankar GA 《Journal of agricultural and food chemistry》2006,54(5):1854-1859

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Assessment of bio-inoculants-mediated nutrient management in terms of productivity,profitability and nutrient harvest index of pigeon pea–wheat cropping system in India     

Gaurendra Gupta  Shiva Dhar  Anchal Dass  Vinod Kumar Sharma  Livleen Shukla  Renu Singh 《Journal of plant nutrition》2020,43(19):2911-2928

Abstract

Imbalanced and indiscriminate use of chemical fertilizers has been adversely influencing the quality of soil, environment, biodiversity and nutrient status in soil. Conjoint application of bio-inoculants (BI) with organic or inorganic sources of nutrients tweaks nutrient synchrony in soil and improves plant nutrition. With this backdrop an experiment was conducted at Indian Agricultural Research Institute, New Delhi during 2016–2018. The objectives were to identify the suitable combinations of BI-mediated nutrient sources for higher productivity and profitability in pigeon pea–wheat cropping system (PWCS). The nine pigeon pea treatments; four sole applications viz., recommended dose of fertilizers (RDF), vermicompost (VC), farm yard manure (FYM), leaf compost (LC) and four conjoint applications viz., RDF?+?BI, VC?+?BI, FYM?+?BI and LC?+?BI and one control were replicated thrice under randomized block design (RBD). However, in succeeding wheat, each of the treatments applied to pigeon pea was further allocated to two levels (50% and 100%) in factorial RBD. Findings exhibit that FYM?+?BI could result into higher equivalent-system grain productivity (10.4 and 10.8?t?ha^?1 during 1st and 2nd year, respectively) of PWCS. However, profitability parameters of PWCS were higher with the RDF?+?BI. Uptake of nutrients (NPK) was significantly higher with FYM?+?BI in pigeon pea and RDF?+?BI in wheat. Nutrient harvest index (NHI) did not vary significantly in both the crops. Conclusively, bio-inoculation is more productive and beneficial in general, while, over the various combinations, recommendation of FYM?+?BI combination could be more productive and sustainable.  相似文献