Fraction of genome that is of horizontal gene transfer (HGT) origin

Range ~5 %
Organism Green algae Bathycoccus prasinos
Reference Weynberg KD, Allen MJ, Wilson WH. Marine Prasinoviruses and Their Tiny Plankton Hosts: A Review. Viruses. 2017 Mar 15 9(3). pii: E43. doi: 10.3390/v9030043. p.6 2nd paragraphPubMed ID28294997
Primary Source [29] Moreau H et al., Gene functionalities and genome structure in Bathycoccus prasinos reflect cellular specializations at the base of the green lineage. Genome Biol. 2012 Aug 24 13(8):R74. doi: 10.1186/gb-2012-13-8-r74.PubMed ID22925495
Comments P.6 2nd paragraph: "The picophytoplankton genus Bathycoccus is comprised of a globally distributed green alga, which produces characteristic ‘spiderweb-like’ plates on the outside of the cells (Figure 1C). The whole genome sequence of the species B. prasinos was recently reported [primary source] and shows approximately 5% HGT, mainly from bacterial and eukaryotic origin with very little of viral origin [primary source]. Two of the 19 chromosomes found in B. prasinos, are described as outlier chromosomes with the small outlier chromosome (SOC) possibly playing a key role in the susceptibility of the alga to viral infection due to its observed hypervariability [primary source]. Interestingly, as will be discussed in detail, a SOC has been identified in O. tauri that has been shown to be key to providing resistance to viral infection [ref 58]."
Entered by Uri M
ID 113514