https://scholars.lib.ntu.edu.tw/handle/123456789/606354
標題: | Diel variation of viral production in a coastal subtropical marine system | 作者: | Ho P.-C Gong G.-C CHIH-HAO HSIEH Chen P.W.-Y |
關鍵字: | Diel cycle;Dilution incubation;Flow cytometry;Viral lysis;Viral production;bacterium;biological production;cell;coastal zone;diel variation;experimental study;flow cytometry;incubation;marine environment;microbial community;mortality;nutrient dynamics;regression analysis;subtropical region;virus;Bacteria (microorganisms) | 公開日期: | 2021 | 卷: | 13 | 期: | 9 | 來源出版物: | Diversity | 摘要: | Viral production (VP) and bacterial mortality by viral lysis critically influence the production and mortality of aquatic bacteria. Although bacterial production, mortality by viral lysis, and viral density have been found to exhibit diel variations, the diel change in viral production has rarely been investigated. In this study, we conducted two diel dilution incubation experiments in a semi-enclosed, nutrient-rich coastal region in northeastern Taiwan to estimate the diel viral production and the mortality by viral lysis. We also compared two methods (linear regression between viral density and time versus arithmetic mean of VP during incubation) of estimating viral production. We found that viral production estimated by linear regression and bacterial mortality by viral lysis were higher during the daytime than during the nighttime. A possible explanation for the high viral production at daytime is that the bacterial community was composed of cell types with higher burst sizes at daytime. We further argued that the classical linear regression method can be used only when viral density significantly linearly increases with time, which does not always occur in dilution incubations. This study offered observations of diel variation in viral dynamics and discussed the methods estimating viral production in a marine environment. ? 2021 by the authors. Licensee MDPI, Basel, Switzerland. |
URI: | https://www.scopus.com/inward/record.uri?eid=2-s2.0-85114885367&doi=10.3390%2fd13090426&partnerID=40&md5=de7cf19bed03cf365da146f0774d7154 https://scholars.lib.ntu.edu.tw/handle/123456789/606354 |
ISSN: | 14242818 | DOI: | 10.3390/d13090426 |
顯示於: | 海洋研究所 |
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