Comparative mitogenomic analyses reveal cryptic diversity of the bryozoan Bugula neritina Linnaeus, 1758, in the Yellow Sea

2016 ◽  
Vol 67 (8) ◽  
pp. 1241 ◽  
Author(s):  
Xin Shen ◽  
Mei Tian ◽  
Ka Hou Chu ◽  
Jin Feng Wang ◽  
Shuai Chen ◽  
...  

The bryozoan Bugula neritina Linnaeus, 1758, is known to be a complex of three cryptic species, namely Types S, D and N. In the present study, we determined the mitochondrial genomic features of B. neritina sampled from Qingdao (QD), China, and compared them with those of the genome reported for a specimen sampled from Taean Gun (TG), South Korea. The B. neritina QD mitochondrial genome has a duplication of trnL2 and lacks trnV compared with B. neritina TG. Five tRNAs (trnL1, trnA, trnE, trnY and trnV) are encoded on the light-strand of B. neritina TG mitochondrial genome, but only one tRNA (trnA) is identified on the B. neritina QD mitochondrial light strand. In contrast to the B. neritina TG mitochondrial genome, deletion of trnV and duplication of trnL2 are identified in the B. neritina QD mtDNA, and three tRNAs (trnE, trnL1 and trnY) exhibit translocation and inversion. The genetic distance in 12 protein-coding genes (PCGs) (amino acids) between the two B. neritina was 0.079, which is higher than interspecific values of 10 lophotrochozoan genera selected for comparison. All these results from comparison between the two B. neritina clearly indicate that they are genetically distinct species. Phylogenetic analysis based on cox1 and lrRNA sequences suggested that B. neritina TG belongs to the widely distributed Type S and B. neritina QD represents a new cryptic type closely related to Type N. This new type is designated as Type Y, for its occurrence in the Yellow Sea. The geographical range of the different types of B. neritina awaits further studies.

2019 ◽  
Vol 8 (23) ◽  
Author(s):  
Si Chul Kim ◽  
Hyo Jung Lee

Here, we report the draft genome sequence of Pseudorhodobacter sp. strain E13, a Gram-negative, aerobic, nonflagellated, and rod-shaped bacterium which was isolated from the Yellow Sea in South Korea. The assembled genome sequence is 3,878,578 bp long with 3,646 protein-coding sequences in 159 contigs.


2013 ◽  
Vol 18 (6) ◽  
pp. 1335-1342
Author(s):  
Zhenbo LU ◽  
Bingqing XU ◽  
Fan LI ◽  
Mingyi SONG ◽  
Huanjun ZHANG ◽  
...  

2011 ◽  
Vol 31 (5) ◽  
pp. 73-78
Author(s):  
Huijun LI ◽  
Xunhua ZHANG ◽  
Shuyin NIU ◽  
Kaining YU ◽  
Aiqun SUN ◽  
...  

2018 ◽  
Vol 25 (3) ◽  
pp. 576 ◽  
Author(s):  
Shuzhang LIANG ◽  
Wei SONG ◽  
Ming ZHAO ◽  
Wei CHEN ◽  
Yu LI ◽  
...  

2020 ◽  
Vol 10 (1) ◽  
Author(s):  
Vikas Kumar ◽  
Kaomud Tyagi ◽  
Rajasree Chakraborty ◽  
Priya Prasad ◽  
Shantanu Kundu ◽  
...  

AbstractThe complete mitochondrial genome of Lyrognathus crotalus is sequenced, annotated and compared with other spider mitogenomes. It is 13,865 bp long and featured by 22 transfer RNA genes (tRNAs), and two ribosomal RNA genes (rRNAs), 13 protein-coding genes (PCGs), and a control region (CR). Most of the PCGs used ATN start codon except cox3, and nad4 with TTG. Comparative studies indicated the use of TTG, TTA, TTT, GTG, CTG, CTA as start codons by few PCGs. Most of the tRNAs were truncated and do not fold into the typical cloverleaf structure. Further, the motif (CATATA) was detected in CR of nine species including L. crotalus. The gene arrangement of L. crotalus compared with ancestral arthropod showed the transposition of five tRNAs and one tandem duplication random loss (TDRL) event. Five plesiomophic gene blocks (A-E) were identified, of which, four (A, B, D, E) retained in all taxa except family Salticidae. However, block C was retained in Mygalomorphae and two families of Araneomorphae (Hypochilidae and Pholcidae). Out of 146 derived gene boundaries in all taxa, 15 synapomorphic gene boundaries were identified. TreeREx analysis also revealed the transposition of trnI, which makes three derived boundaries and congruent with the result of the gene boundary mapping. Maximum likelihood and Bayesian inference showed similar topologies and congruent with morphology, and previously reported multi-gene phylogeny. However, the Gene-Order based phylogeny showed sister relationship of L. crotalus with two Araneomorphae family members (Hypochilidae and Pholcidae) and other Mygalomorphae species.


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