ABSTRACT
Aims: To ascertain the hematinic potential and bioactive compounds in Gossypium barbadense. Place and Duration of Study: Department of Pharmaceutical Sciences, Ahmadu Bello University, Zaria, and Department of Applied Science, College of Science and Technology, Kaduna Polytechnic, Kaduna, Nigeria between February, 2013 and July, 2014. Methodology: Forty eight (48) apparently healthy albino rats weighing (150-200g) were grouped in to seven groups of five rats each. Thirteen rats were used for the G. barbadense toxicity test. Hemolytic anemia was induced using Phenylhydrazine (10mg/kg bw). Different doses (100mg/ml, 200mg/ml, and 400mg/ml) of G. barbadense were administered with periodic evaluation of Haematological indices (Hemoglobin concentration, Packed Cell Volume, Red Blood Cells and reticulocyte count). Bioferon (0.23ml/kg b.w) was used as the standard drug. Synergistic Thin layer Chromatography and Column Chromatography were used to purify the plant extract. Gas Chromatography linked with Mass Spectroscopy (GC-MS) was used in the Characterization of purified fraction. Results: The level of Hb (g/dl) was found to increase in a dose dependent manner (100mg-12.17g/dl, 200mg-12.60g/dl and 400mg-12.87 g/dl), likewise RBC (4.31, 4.41 and 4.72) and PCV (43.35%, 43.49%, 43.65%). Characterization revealed the presence of 19 compounds. Conclusion: G. barbadense resulted in HB, RBC and PCV boost, owing to inherent bioactive component.
ABSTRACT
WRKY transcription factor proteins play important roles in diverse stress responses. In this study, we first cloned a novel WRKY from our constructed bacteriophage full-length cDNA library for cotton (Gossypium barbadense). The plants were stressed by exposure to a defoliating strain of Verticillium dahliae. The capacity of primary cDNA library was 1.28 × 106 PFU and the titer of the amplified cDNA library was >1010 PFU mL–1. The recombination rate of the library was 94% and average insert size was about 1.1 kb. This novel gene, named GbWRKY1 was 1971 bp long and encodes a protein of 489 amino acids. It contains two characteristic WRKY domains and two zinc finger motifs. The sub-cellular assay indicated that GbWRKY1–GFP fusion protein was localized in the nucleus. Furthermore, Northern blot analysis showed that expression pattern of GbWRKY1 was similar among tissue types (roots, stems and leaves), but differed between pathogen-infiltrated and Czapek medium-infiltrated (untreated control) plants. Quantitative real-time PCR showed that GbWRKY1 could also be induced by salicylic acid (SA), methyl jasmonate (MeJA) and 1-aminocyclopropane-1-carboxylic acid (ACC). These findings clearly suggest that as a pathogen-inducible transcription factor GbWRKY1 plays an important role in plant defense responses.