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首页> 外文期刊>Aquatic Living Resources >RNA, DNA and protein concentrations and amino acid profiles of deep-sea decapod Aristeus antennatus: An indication for seasonal variations of nutrition and growth
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RNA, DNA and protein concentrations and amino acid profiles of deep-sea decapod Aristeus antennatus: An indication for seasonal variations of nutrition and growth

机译:深海十足触角拟南芥触角的RNA,DNA和蛋白质浓度以及氨基酸谱:表明营养和生长的季节性变化

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摘要

Seasonal changes in nucleic acid concentrations and amino acid profiles in the muscle of juvenile Aristeus antennatus were investigated. RNA content, RNA:DNA and RNA:protein ratios varied significantly between seasons (p < 0.05), being the lowest and the highest values obtained in winter and spring/summer. A significant variation in the total amino acid content (TAA) from winter to summer was observed (p < 0.05). In fact, during this period a significant percent of increase in total non- (NEAA; 20.2%) and essential amino acids (EAA, 18.7%) contents occurred. Concomitantly, a significant decrease in the free amino acid (FAA) content from winter to summer was observed. A higher percentage of decrease with free essential amino acids (FEAA; 56.6%) in comparison to free non-essential amino acids (FNEAA: 34.2%) was attained. The significant increase in RNA and TAA contents from winter to summer may be related with protein synthesis. On the other hand, the lowest values obtained in winter may be due to a reduction in feeding activity; in this period the muscle protein must be progressively hydrolysed, which is evident with the higher FAA content. The liberated amino acids enter FAA pool and become available for energy production.
机译:研究了幼年触角antenna肌肉中核酸浓度和氨基酸谱的季节性变化。不同季节之间的RNA含量,RNA:DNA和RNA:蛋白质的比率差异显着(p <0.05),是冬季和春季/夏季获得的最低和最高值。从冬季到夏季,总氨基酸含量(TAA)发生了显着变化(p <0.05)。实际上,在此期间,总非氨基酸(NEAA; 20.2%)和必需氨基酸(EAA,18.7%)含量显着增加。同时,观察到从冬季到夏季,游离氨基酸(FAA)含量显着下降。与游离的非必需氨基酸(FNEAA:34.2%)相比,游离的必需氨基酸(FEAA; 56.6%)的降低百分比更高。从冬季到夏季,RNA和TAA含量的显着增加可能与蛋白质合成有关。另一方面,冬季获得的最低值可能是由于摄食活动减少所致。在此期间,肌肉蛋白质必须逐步水解,这在较高的FAA含量中很明显。释放出的氨基酸进入FAA池,可用于生产能量。

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