Seed development and seed shedding in North Italian ecotypes of Lolium multiflorum     

R. M. RAJA HARUN  E. W. BEAN 《Grass and Forage Science》1979,34(3):215-220

Seed development and seed shedding were studied in seven populations of Lolium multiflorum. Five of these populations were from the North Italian Plains, two from the Piedmont area and three from the Lombardy region. The remaining populations were Delecta, a variety derived from ecotypes from the Lombardy Plain, and RvP Lemtal. Seed shedding was greatest in the three ecotypes from the Lombardy Plain and lowest in RvP Lemtal. The two ecotypes from the Piedmont Plain, and Delecta, gave intermediate values. Moisture loss during ripening was greatest in the Lombardy ecotypes but there were no differences in the time taken to reach maximum 1000-seed weight. Germination values had reached a maximum 27 d after anthesis in all populations. It is suggested that the North Italian ecotypes, or varieties derived from them, should be harvested by direct combining at a moisture concentration of 450 g kg^-1 (≡45%) to obtain the maximum weight of germinable seed.  相似文献   

Restoration of saline land by halophytes for Indian soils     

K.C. Ravindran  K. Venkatesan  K.P. Chellappan 《Soil biology & biochemistry》2007,39(10):2661-2664

Usually saline soils were reclamized by chemical or mechanical remediation, since the cost of leaching technique for saline soil reclamation is higher in India. In the present study an attempt has been made to investigate to identify the fast and luxuriantly growing halophytic herbs which are salt accumulators and to assess the feasibility of salt bioaccumulation. From the results it is concluded that among six species studied Suaeda maritima and Sesuvium portulacastrum exhibited greater accumulation of salts in their tissues as well as higher reduction of salts in the soil medium.  相似文献   

Association of bovine KISS1 single nucleotide polymorphisms with reproductive traits in Indian Cattle     

Umesh Singh  Rani Alex  Sushil Kumar  Rajib Deb  Thiruvothur Venkatesan Raja  Shaily Singhal  Gyanendra Singh Sengar  Bharat Singh Rathod  Kotikalapudi Srirama Murthy  Nitin Vasant Rao Patil 《Reproduction in domestic animals》2020,55(8):922-930

Kisspeptins, a family of neuropeptide encoded by the Kiss1 gene, have emerged as crucial regulator of fertility and reproduction by regulating the hypothalamic–pituitary–gonadal axis. The present study was aimed to identify and associate SNPs in the KISS1 gene with reproductive traits in cattle of Indian origin. DNA samples collected from 300 individual cows of three Indian dairy breeds (Gir, Kankrej and Frieswal) of cattle were used in the study. The SNPs of KISS1 gene were identified with PCR-RFLP and sequence analysis using two sets of primer pairs. A total of 5 SNPs were identified in the targeted region of which, two were selected for screening the population and association studies. The analysis revealed that genotypes of rs442633552G>A and rs42022871C>T had a significant association with dry period. The SNP rs42022871C>T also established significant role in milk production traits, and selection of TT-genotyped animals will improve the reproduction and production potential of the animals.  相似文献   

Protective effect of berberine on expression pattern of apoptotic, cell proliferative, inflammatory and angiogenic markers during 7,12-dimethylbenz(a)anthracene induced hamster buccal pouch carcinogenesis     

Manoharan S  Sindhu G  Nirmal MR  Vetrichelvi V  Balakrishnan S 《Pakistan journal of biological sciences: PJBS》2011,14(20):918-932

Investigation of expression pattern of molecular markers in oral epithelial tissues would help to assess the cell differentiation and proliferation as well as early diagnosis of precancerous and cancerous lesions of the oral cavity. Aim of the present study was to investigate the protective effect of berberine on expression pattern of apoptotic, cell proliferative, inflammatory and angiogenic markers during 7,12-dimethylbenz(a)anthracene (DMBA) induced hamster buccal pouch carcinogenesis. Immunohistochemical staining [p53, Bcl-2, Bax, Proliferating Cell Nuclear Antigen (PCNA) and Vascular Endothelial Growth Factor (VEGF)], Enzyme Linked Immuno Sorbent Assay (ELISA) [c-fos, COX-2, caspase-3 and -9] and Real-Time PCR [Cyclin D1 and NFkappaB] were utilized to assess the expression pattern of molecular markers in DMBA induced hamster buccal pouch carcinogenesis. Over expression of mutant p53, PCNA, Bcl-2 and VEGF were noticed in hamsters treated with DMBA alone. Decreased expression of Bax protein was noticed in hamsters treated with DMBA alone. Increased expression of C-fos, COX-2, NFkappaB and Cyclin D1 and decreased activities of caspase-3 and -9 were also noticed in hamsters treated with DMBA alone. Oral administration ofberberine at a dose of 75 mg kg(-1) b.w. brought back the expression of above mentioned molecular markers to near normal pattern in hamsters treated with DMBA. The present results thus suggest that berberine has potent anti-inflammatory, anti-angiogenic, anti-cell proliferative and apoptosis inducing properties in DMBA induced oral carcinogenesis.  相似文献   

Prevalence of peste des petits ruminants among sheep and goats in India   总被引：1，自引：0，他引：1  

Vinayagamurthy Balamurugan  Paramasivam Saravanan  Arnab Sen  Kaushal Kishor Rajak  Gnanavel Venkatesan  Paramanandham Krishnamoorthy  Veerakyathappa Bhanuprakash  Raj Kumar Singh 《Journal of veterinary science (Suw?n-si, Korea)》2012,13(3):279-285

This study measured the clinical prevalence of peste des petits ruminants (PPR) among sheep and goats in India between 2003 and 2009 by analyzing clinical samples from suspected cases of PPR that were submitted to the Rinderpest and Allied Disease Laboratory, Division of Virology, IVRI, Mukteswar for PPR diagnosis. PPR outbreaks were confirmed by detecting PPR virus (PPRV)-specific antigen in the clinical samples. Clinical samples (blood, nasal swabs, spleen, lymph node, kidney, liver, intestine, and pooled tissue materials) were taken from a total of 592 sheep and 912 goats in different states of India and screened for the presence of PPRV antigen using a monoclonal antibody-based sandwich ELISA kit. A total of 20, 38, and 11 laboratory-confirmed PPR outbreaks occurred among sheep, goat, and combined sheep and goat populations, respectively. Our findings provide evidence of widespread PPR endemicity in India. The underlying reasons could be variations in husbandry practices in different geographical regions, agro-climatic conditions, and livestock migration. Furthermore, decrease in the number of PPR outbreaks over time might be due to the effectiveness of current live PPR vaccines and timely vaccination of target species. Vaccination against PPR has been practiced in India since 2002 to control this disease.  相似文献   

Removal of Fatty Acids from Palm Oil Effluent by Combined Electro-Fenton and Biological Oxidation Process     

B. Ramesh Babu  K. Seeni Meera  P. Venkatesan  D. Sunandha 《Water, air, and soil pollution》2010,210(1-4):203-210

The objective of this paper is to design a pilot plant electrochemical reactor and to prove the operational concept of the electrochemical production of ferrate in situ and its online application for sewage treatment. To that end, the first part of this paper focuses on the analysis of the main engineering aspects of the reactor and the electrochemical process that affect the ferrate production, using laboratory scale experiments such as the interelectrode gap, the space-time yield, the area/volume (A/V) ratio, the current efficiency, and the energy consumption. The second part focuses on the production of ferrate using a pilot plant scale to prove the operational concept of the electrochemical generation of ferrate in situ and its online application as a step towards its full scale application for water and wastewater treatment.  相似文献   

Physics: for women,the last frontier     

Tobias S  Urry M  Venkatesan A 《Science (New York, N.Y.)》2002,296(5571):1201

  相似文献   

High-quality binary protein interaction map of the yeast interactome network   总被引：1，自引：0，他引：1  

Yu H  Braun P  Yildirim MA  Lemmens I  Venkatesan K  Sahalie J  Hirozane-Kishikawa T  Gebreab F  Li N  Simonis N  Hao T  Rual JF  Dricot A  Vazquez A  Murray RR  Simon C  Tardivo L  Tam S  Svrzikapa N  Fan C  de Smet AS  Motyl A  Hudson ME  Park J  Xin X  Cusick ME  Moore T  Boone C  Snyder M  Roth FP  Barabási AL  Tavernier J  Hill DE  Vidal M 《Science (New York, N.Y.)》2008,322(5898):104-110

Current yeast interactome network maps contain several hundred molecular complexes with limited and somewhat controversial representation of direct binary interactions. We carried out a comparative quality assessment of current yeast interactome data sets, demonstrating that high-throughput yeast two-hybrid (Y2H) screening provides high-quality binary interaction information. Because a large fraction of the yeast binary interactome remains to be mapped, we developed an empirically controlled mapping framework to produce a "second-generation" high-quality, high-throughput Y2H data set covering approximately 20% of all yeast binary interactions. Both Y2H and affinity purification followed by mass spectrometry (AP/MS) data are of equally high quality but of a fundamentally different and complementary nature, resulting in networks with different topological and biological properties. Compared to co-complex interactome models, this binary map is enriched for transient signaling interactions and intercomplex connections with a highly significant clustering between essential proteins. Rather than correlating with essentiality, protein connectivity correlates with genetic pleiotropy.  相似文献   

Comparison of plasmid profile analysis, antibiogram testing, resistotyping and biotyping in the identification of Escherichia coli isolates from poultry.   总被引：2，自引：0，他引：2  

B P David  V Purushothaman  R A Venkatesan 《The Veterinary record》1991,129(5):94-97

Twenty isolates of Escherichia coli from poultry, predominantly from birds with colibacillosis, were collected and plasmid profile analysis, antibiogram testing, resistotyping and biotyping were compared as epidemiological tools for the differentiation and identification of the isolates. Plasmid profile analysis, in conjunction with any one of the other three tests, was found to be more valuable as an epidemiological tool than one test alone.  相似文献   

Chitosan-Alginate Biocomposite Containing Fucoidan for Bone Tissue Engineering     

Jayachandran Venkatesan  Ira Bhatnagar  Se-Kwon Kim 《Marine drugs》2014,12(1):300-316

Over the last few years, significant research has been conducted in the construction of artificial bone scaffolds. In the present study, different types of polymer scaffolds, such as chitosan-alginate (Chi-Alg) and chitosan-alginate with fucoidan (Chi-Alg-fucoidan), were developed by a freeze-drying method, and each was characterized as a bone graft substitute. The porosity, water uptake and retention ability of the prepared scaffolds showed similar efficacy. The pore size of the Chi-Alg and Chi-Alg-fucoidan scaffolds were measured from scanning electron microscopy and found to be 62–490 and 56–437 µm, respectively. In vitro studies using the MG-63 cell line revealed profound cytocompatibility, increased cell proliferation and enhanced alkaline phosphatase secretion in the Chi-Alg-fucoidan scaffold compared to the Chi-Alg scaffold. Further, protein adsorption and mineralization were about two times greater in the Chi-Alg-fucoidan scaffold than the Chi-Alg scaffold. Hence, we suggest that Chi-Alg-fucoidan will be a promising biomaterial for bone tissue regeneration.  相似文献