Tea is an important cash crop worldwide, and its nutritional value has led to its high economic benefits. Tea anthracnose is a common disease of tea plants that seriously affects food safety and yield and has a far-reaching impact on the sustainable development of the tea industry. In this study, phenotypic analysis and pathogenicity analysis were performed on knockout and complement strains of -the transcriptional regulator of tea anthracnose homeobox-and the pathogenic mechanism of these strains was explored via RNA-seq.
View Article and Find Full Text PDFElongation of very long-chain fatty acids protein 6 (ELOVL6) played crucial roles in regulating energy expenditure and fatty acid metabolism. Many studies have performed to investigate the physiological roles and regulatory mechanisms of in fish and animals, while few studies were reported in crustaceans. Here we reported on the molecular cloning, tissue distribution and expression profiles in response to dietary fatty acids, ambient salinity and starvation stress in by using rapid amplification of cDNA ends (RACE) and quantitative real-time PCR.
View Article and Find Full Text PDFVitamin D (vit-D), as an indispensable and fat-soluble nutrient, is associated with skeletal mineralization and health in mammals. However, such associations have not been well studied in economically important crustaceans. Six levels of vit-D with isonitrogenous and isolipidic diets were used to feed .
View Article and Find Full Text PDFThis study evaluated the effects of dietary myo-inositol (MI) on growth performance, antioxidant status and lipid metabolism of juvenile Chinese mitten crab (Eriocheir sinensis) fed different percentage of lipid. Crabs (4·58 (sem 0·05) g) were fed four diets including a normal lipid diet (N, containing 7 % lipid and 0 mg/kg MI), N with MI supplementation (N + MI, containing 7 % lipid and 1600 mg/kg MI), a high lipid diet (H, containing 13 % lipid and 0 mg/kg MI) and H with MI supplementation (H + MI, containing 13 % lipid and 1600 mg/kg MI) for 8 weeks. The H + MI group showed higher weight gain and specific growth rate than those in the H group.
View Article and Find Full Text PDFButyrate is a fermentation byproduct of gut microbiota and is susceptible to chronic oxidative stress. This study investigates the mitigative effects of sodium butyrate (SBT) on growth inhibition and intestinal damage induced by glycinin in juvenile Chinese mitten crab (Eriocheir sinensis). All four experimental diets containing 80 g/kg glycinin were formulated with 0, 10, 20 and 40 g/kg SBT respectively.
View Article and Find Full Text PDFThe T-2 toxin is a trichothecene mycotoxin and is highly toxic to aquatic animals, but little is known on its toxic effect in crustaceans. In the present study, the crab juveniles were fed with diets containing four levels of T-2 toxin: 0 (control), 0.6 (T1), 2.
View Article and Find Full Text PDFThis study evaluates the effect of dietary supplementation of immunostimulants on the Chinese mitten crab (Eriocheir sinensis) with a single administration of mannan oligosaccharide (MOS), or its combination with either β-glucan or with inulin for 8 weeks. Four diets included an untreated control diet (C), MOS alone (3 g kg, M), MOS with β-glucan (3 g kg MOS + 1.5 g kg β-glucan, MB), and MOS with inulin (3 g kg MOS + 10 g kg inulin, MI).
View Article and Find Full Text PDFTo investigate the effects of arginine (Arg) on the growth, antioxidant capacity, immunity and disease resistance of juvenile Chinese mitten crab, three diets containing Arg levels at 1.72% (control), 2.73% and 3.
View Article and Find Full Text PDFIn the present paper, we investigated the molecular cloning and functional characterization of elongase of very long chain fatty acid (elovl) and fatty acyl desaturase (fads) genes in a marine teleost, Nibea diacanthus. The elongase cDNA sequence encoded a polypeptide of 294 amino acids exhibiting Elovl5 activity, which effectively elongated both C18 (18:2n-6, 18:3n-3 and 18:3n-6) and C20 (20:4n-6 and 20:5n-3) polyunsaturated fatty acids. The desaturase cDNA sequence specified a polypeptide of 445 amino acids indicating Δ6 desaturation activity, which coul converted C18:2n-6 and C18:3n-3 to C18:3n-6 and C18:4n-3, respectively.
View Article and Find Full Text PDFIn the present study, SREBP-1 cDNA was cloned from the hepatopancreas of mud crab (Scylla paramamosain) and characterized by performing rapid-amplification of cDNA ends. The 3361bp long full-length cDNA encodes a polypeptide with 1039 amino acids. Tissue distribution analysis revealed that SREBP-1 transcripts were widely distributed in various organs, with higher mRNA levels in the eyestalk and cranial ganglia.
View Article and Find Full Text PDFEnzymes that lengthen the carbon chain of polyunsaturated fatty acids (PUFA) are key to the biosynthesis of the long-chain polyunsaturated fatty acids (LC-PUFA). Here we report on the molecular cloning, tissue distribution, functional characterization and nutritional regulation of a elovl5 gene from Nibea coibor. The full-length cDNA was 1315 bp, including a 5-untranslated region (UTR) of 134 bp, a 3-UTR of 296 bp and an open reading frame of 885 bp, which specified a peptide of 294 amino acids.
View Article and Find Full Text PDFComp Biochem Physiol B Biochem Mol Biol
March 2018
In this report, the full-length cDNA of fatty acyl Elovl4-like elongase was cloned from the hepatopancreas of Scylla paramamosain by rapid-amplification of cDNA ends (RACE). To the best of our knowledge, this is the first report of Elovl4-like elongase in crustaceans. The full-length cDNA of Elovl4-like was 1119bp, which included a 5'-terminal untranslated region (UTR) of 58bp, a 3'-terminal UTR of 44bp and an open reading frame (ORF) of 1017bp encoding a polypeptide of 338 amino acids.
View Article and Find Full Text PDFComp Biochem Physiol B Biochem Mol Biol
June 2017
Fatty acyl desaturases (Fads) are critical enzymes in the pathways for the biosynthesis of the highly unsaturated fatty acids (HUFA). Here we report on the molecular cloning, tissue expression and nutritional regulation of a Δ6 fatty acyl desaturase-like (Δ6 Fad-like) gene from mud crab, Scylla paramamosain. The full-length cDNA was 1973bp, with a 201bp of 5'-UTR, a 443bp of 3'-UTR, and an ORF of 1329bp that encoded a protein of 442 amino acids.
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