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Plant endophytic yeasts Pichia fermentans and Meyerozyma caribbica improve growth, biochemical composition, haematological parameters and morphology of internal organs of premature Barbonymus gonionotus
Aquaculture Reports ( IF 3.7 ) Pub Date : 2020-12-26 , DOI: 10.1016/j.aqrep.2020.100575
Fatama Islam , Mohammad Abdus Salam , Md. Ashikur Rahman , Sulav Indra Paul , Tamalika Rani Das , Md. Mahbubur Rahman , Dinesh Chandra Shaha , Dipali Rani Gupta , Md Shah Alam , Tofazzal Islam

Plant associated yeasts promote growth and protect plants from various pathogens in multifaceted mechanisms. However, no report has so far been published on the effect of plant endophytic yeasts on growth and development of fishes. This study aimed to isolate and identify endophytic yeasts from pineapple (Ananas comosus) and evaluate the effects of these yeasts-enriched diets on growth, nutrients of carcass and mineral contents of muscles, haematological parameters and morphology of intestine, liver and kidney of Barbonymus gonionotus. Two endophytic yeast species viz. Pichia fermentans strain MAS1 and Meyerozyma caribbica strain MAS2 were isolated from A. comosus cultivated at Kapashia upazila of Gazipur district and district of Rangamati in Bangladesh, respectively. The two yeast strains were identified using internal transcribed spacer region (5.8S rRNA gene) sequencing. Both strains MAS1 [(1–3) × 0.94 × 108 CFU kg−1 feed] and MAS2 [(1–3) × 108 CFU kg−1] containing diets were fed to premature B. gonionotus for 60 days and the fish were reared in the plastic tanks with a good aeration system. Fish treated with pineapple yeasts significantly improved growth, nutrients of carcass, mineral contents of the muscles, and haematological parameters of B. gonionotus compared to control. Histological study revealed that the endophytic yeasts significantly enhanced length (μm) of intestinal villi compared to control fishes. Furthermore, the yeast treated formulated diet considerably reduced the fat content in liver and also improved the function of the kidney of B. gonionotus compared to the control group. Among the treatments, application of strain MAS1 at 0.94 × 108 CFU kg−1 feed showed the highest beneficial effects to B. gonionotus indicating its potentials for practical application in promoting sustainable and safe aquaculture.



中文翻译:

植物内生酵母发酵毕赤酵母Carybica Meyerozyma可改善早熟Barbonymus gonionotus的生长,生化组成,血液学参数和内部器官的形态

植物相关的酵母以多方面的机制促进生长并保护植物免受各种病原体的侵害。但是,迄今为止,尚未发表有关植物内生酵母菌对鱼类生长和发育的影响的报告。这项研究旨在从菠萝(Ananas comosus)中分离和鉴定内生酵母,并评估这些富含酵母的饮食对Barbonymus gonionotus的生长,of体营养和肌肉矿物质含量,血液学参数和肠道,肝脏和肾脏形态的影响。。两种内生酵母菌种古柯曲霉中分离出发酵毕赤酵母菌株MAS1和Carybzyica caribbica菌株MAS2 分别在孟加拉国Gazipur区的Kapashia upazila和Rangamati区种植。使用内部转录间隔区(5.8S rRNA基因)测序鉴定了两个酵母菌株。分别将含有MAS1 [(1-3)×0.94×10 8 CFU kg -1饲料]和MAS2 [(1-3]×10 8 CFU kg -1)的饲料分别喂食过早的B. gonionotus 60天。将鱼用良好的曝气系统饲养在塑料池中。鱼用菠萝酵母显著改善的生长,胎体的营养物质,肌肉的矿物含量,和血液学参数处理B. gonionotus与对照相比。组织学研究表明,与对照鱼相比,内生酵母能显着增加肠道绒毛的长度(μm)。此外,与对照组相比,用酵母处理的配方饮食显着降低了肝脏中的脂肪含量,并且还改善了冈比亚芽孢杆菌的肾脏功能。间的处理,施用菌株MAS1中的0.94×10 8 CFU千克-1进料显示出最高的有益效果B. gonionotus指示其为实际应用潜力在促进可持续和安全水产养殖。

更新日期:2020-12-27
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