The present study reports the draft genomes of three hydrocarbon-degrading haloarchaeal strains Haloferax sp. AB510, Haladaptatus sp. AB618 and Haladaptatus sp. AB643 that were isolated from the estuarine sediments of Sundarban mangrove forests, India. All three genomes had a high GC content of around 60%, characteristic of the haloarchaea. The Haloferax sp. AB510 genome was around 3.9 Mb in size and consisted of 4567 coding sequences and 54 RNAs. The Haladaptatus sp. AB618 and Haladaptatus sp. AB643 genomes were comparatively larger and around 4.8 Mb each. The AB618 and AB643 genomes comprised 5279 and 5304 coding sequences and 60 and 59 RNAs, respectively. All three of the genomes encoded several genes that attributed to their survival in the presence of hydrocarbons in their native habitats. Functional annotation and curation of the sequenced genomes suggested that the Haloferax sp. AB510 strain utilized the gentisate pathway of aromatic compound degradation. While the Haladaptatus sp. AB618 and Haladaptatus sp. AB643 strains possessed the freedom of utilizing both the gentisate and the catechol pathways for degrading aromatic hydrocarbons.

本研究报告了三种碳氢化合物降解盐古菌菌株Haloferax sp. 的基因组草案。AB510，Haladaptatus sp。AB618 和Haladaptatus sp。AB643 是从印度孙德尔本红树林的河口沉积物中分离出来的。所有三个基因组都具有约 60% 的高 GC 含量，这是盐古菌的特征。哈洛费拉克斯sp 。AB510基因组大小约为3.9 Mb，由4567个编码序列和54个RNA组成。哈拉达普塔斯 (Haladaptatus sp .) AB618 和Haladaptatus sp。AB643 基因组相对较大，每个基因组约为 4.8 Mb。AB618和AB643基因组分别包含5279和5304个编码序列以及60和59个RNA。所有三个基因组都编码了几个基因，这些基因归因于它们在原生栖息地存在碳氢化合物的情况下的生存。测序基因组的功能注释和整理表明Haloferax sp。AB510菌株利用龙胆酸途径降解芳香族化合物。而Haladaptatus sp。AB618 和Haladaptatus sp。AB643菌株可以自由地利用龙胆酸和儿茶酚途径来降解芳香烃。