January 2013
Ozone effects on forests
Tropospheric ozone concentration has been rising in the last decades, due to industrial and other human activities. For plants, ozone constitutes one of the most damaging air pollutants. Main effects of ozone on forest species are reviewed: visible symptoms caused by acute exposure at the anatomical, structural and metabolic level, and the long run effects on growth and development derived from chronic...
January 2013
Genetic relationships among Vigna mungo (L.) Hepper and its close wild relatives using microsatellite markers
Genetic relationships of two wild Vigna species, Vigna mungo var. silvestris andVigna hainiana, with accessions of a cultivated species, V. mungo known as urdbean or blackgram was studied with a view of using them as a donor of alien stress resistance genes in future breeding. POPGENE analysis conducted on a total of 375 individuals of 25 accessions using sequence...
January 2013
Adenosine diphosphate-ribosylation factor 1 controls spindle assembly during first meiotic division in bovine oocytes
Adenosine diphosphate-ribosylation factor 1 (ARF1) is a member of guanosine triphosphate (GTP)-binding proteins family associated with Golgi complexes. ARF1 regulated asymmetric cell division in female meiosis in mouse. However, little isknown about its function in bovine oocyte meiosis. In the present study, we examined the localization, expression and functions of ARF1 during bovine oocyte...
January 2013
Haploid embryos of lettuce (Lactuca sativa) induced by alien pollen or chemical factors
In order to work out an effective haploidization method in lettuce (Lactuca sativa), we attempted to induce the development of haploid embryos by chemical treatment of pistils or through wide crossing of lettuce with 25 species (mostly of the Asteraceae family). The highest frequency of embryos was achieved after crosses withHelianthus annuus (16%) or H. tuberosum (19%). All the embryos,...
January 2013
Characterization and comparison of key genes involved with flowering time regulation from Arabidopsis thaliana, Oryza sativa and Zea mays
Flowering is an important phase in the angiosperms life cycle, as it signifies the transition from vegetative to reproductive phase. Recently, increasing number of flowering genes are being cloned and analyzed. However, few studies have focused on the comparative analysis of key candidate genes involved in the regulation of flowering time across species. We explore the common characteristics of key flowering...
January 2013
Preliminary characterization of genetic strains in clariid species, Clarias gariepinus and Heterobranchus bidorsalis using microsatellite markers
Two Clariid species, Clarias gariepinus and Heterobranchus bidorsalis were compared at four loci using C. gariepinus microsatellite markers (Cga01, Cga02,Cga03, and Cga05). The heterozygosities observed were found to be 0.450 ± 0.050 and 0.442 ± 0.127, while 100% polymorphism was observed in both species. Overall, 95% of the samples amplified upon...
January 2013
Cultural, morphological, pathogenic and molecular characterization of Alternaria mali associated with Alternaria leaf blotch of apple
Alternaria blotch (Alternaria mali) causes severe foliar damage to apple trees in Kashmir. Twenty one (21) isolates of A. mali were collected from different locations and characterized for cultural, morphological, pathogenic and molecular variations. A. mali colonies varied in their cultural behaviour ranging from velvety to cottony, mostly appressed, with regular to irregular...
January 2013
Application of chitosan solutions for rice production in Vietnam
Preparing chitosan solutions from shrimp shells for rice production was investigated. The chitosan produced from shrimp shells using dilute acetic acid proved effective in controlling plants infection by microbial agents leading to higher yields. The field data of our studies showed that the yields of rice significantly increased (~31%) after applying chitosan solution. In general, applying chitosan increased...
January 2013
Responses of selected biota after biostimulation of a vegetable oil spill in the Con Joubert Bird Sanctuary wetland: A pilot study
An investigation on the effect of a vegetable oil spill was conducted on the biological diversity of the Con Joubert Bird Sanctuary wetland in South Africa before and after biostimulation with different concentrations of fertilizer during 2008. Biostimulation responses were analyzed 30 days after different concentrations of fertilizer were applied to the freshwater wetland at...
January 2013
Characterization of Pseudomonas aeruginosa PB112 (JN996498) isolated from infected Labeo bata (Hamilton) by 16S rRNA gene sequence analysis and fatty acid methyl ester (FAME) analysis
In this study, a total number of fifteen moribund Labeo bata were collected from Hooghly, Purba Medinipur, and South 24 Parganas districts of West Bengal, India. The lesions and hemorrhages were recorded at the base of the fins or on the skin due to bacterial infection. Isolation and pure culture of the causative agent were made in the laboratory. The 16S rRNA gene sequence of...
January 2013
Gum acacia coating with garlic and cinnamon as an alternate, natural preservative for meat and fish
Meat and fish, the most perishable foods need to be preserved preferably with natural preservatives. In our study, we have proven that spices like garlic and cinnamon that are used as regular ingredients in cooking can act as preservative due to their rich antibacterial and antioxidant profile. The minimum inhibitory concentration (MIC) determined by macrobroth dilution method against five spoilage and...
January 2013
Changes in liver and plasma enzymes of Clarias gariepinus exposed to sublethal concentration of diesel
This study investigated the effects of graded levels of sub-lethal concentrations of diesel on the biochemistry profile of Clarias gariepinus after exposure for a period of 28 days. 118 (male and female) C. gariepinus were used for the study. They were divided into four groups. Group 1 served as the untreated control (0) while Groups 2, 3 and 4 were treated with graded levels of diesel...
January 2013
The intelligent estimating of spinal column abnormalities by using artificial neural networks and characteristics vector extracted from image processing of reflective markers
Spinal column abnormities such as kyphosis and lordosis are the most common deformity that normally compare to the standard norms. To classify the subjects into the healthy and abnormal groups based on the angle values of the standard norms, the aim of this study was to use the artificial neural network method as a standard way for realizing the spinal column abnormalities. In this way, 40 male students (26...
January 2013
Isolation, cloning and molecular characterization of a thermotolerant xylanase from Streptomyces sp. THW31
A xylan-degrading Streptomyces sp. THW31 was isolated from rubbish compost in Thailand. Analysis of a genomic library of nucleotide sequences from Streptomycessp. THW31 revealed that the complete open reading frame (ORF) of xylanase (xlnW31) was 999 bp, and this gene encoded a member of the glycosyl hydrolase family 11. Sequence homology of the predicted amino acid sequence encoded...
January 2013
Efficacy of aqueous and ethanolic extracts of leaves of Chromolaena odorata as molluscicide against different developmental stages of Biomphalaria pfeifferi
The molluscicidal activities of aqueous and ethanolic extracts of leaves of Chromolaena odorata were investigated on adult, one week old juveniles and 3 to 4 days old egg-masses of Biomphalaria pfeifferi. Ten adults each were exposed to a serial dilution of 40, 80, 160, 240, 320, 400, and 480 ppm distilled water extracts and 20, 40, 80, 160, 240 and 320 ppm ethanolic extracts of leaves of C. odorata. Twenty juveniles of...
Advertisement
Advertisement
