Determinants in the phage life cycle: The dynamic nature of ssDNA phage FLiP and host interactions under varying environmental conditions and growth phases

被引:2
作者
Makela, Kati [1 ]
Laanto, Elina [1 ]
Sundberg, Lotta-Riina [1 ]
机构
[1] Univ Jyvaskyla, Dept Biol & Environm Sci, Jyvaskyla, Finland
基金
欧洲研究理事会; 芬兰科学院;
关键词
BACTERIOPHAGE PRD1; GLIDING MOTILITY; VIRUSES; DNA; FLAVOBACTERIA; DIVERSITY; INFECTION; MUTANTS; BIOFILM; BLOOMS;
D O I
10.1111/1462-2920.16670
中图分类号
Q93 [微生物学];
学科分类号
071005 ; 100705 ;
摘要
The influence of environmental factors on the interactions between phages and bacteria, particularly single-stranded DNA (ssDNA) phages, has been largely unexplored. In this study, we used Finnlakevirus FLiP, the first known ssDNA phage species with a lipid membrane, as our model phage. We examined the infectivity of FLiP with three Flavobacterium host strains, B330, B167 and B114. We discovered that FLiP infection is contingent on the host strain and conditions such as temperature and bacterial growth phase. FLiP can infect its hosts across a wide temperature range, but optimal phage replication varies with each host. We uncovered some unique aspects of phage infectivity: FLiP has limited infectivity in liquid-suspended cells, but it improves when cells are surface-attached. Moreover, FLiP infects stationary phase B167 and B114 cells more rapidly and efficiently than exponentially growing cells, a pattern not observed with the B330 host. We also present the first experimental evidence of endolysin function in ssDNA phages. The activity of FLiP's lytic enzymes was found to be condition-dependent. Our findings underscore the importance of studying phage ecology in contexts that are relevant to the environment, as both the host and the surrounding conditions can significantly alter the outcome of phage-host interactions. The interactions between the lipid-containing ssDNA phage FLiP and its three Flavobacterium hosts are influenced by factors such as the host strain and culture conditions, including temperature and bacterial growth phase. image
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页数:17
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