TY - JOUR
T1 - African Arowana Genome Provides Insights on Ancient Teleost Evolution
AU - Hao, Shijie
AU - Han, Kai
AU - Meng, Lingfeng
AU - Huang, Xiaoyun
AU - Cao, Wei
AU - Shi, Chengcheng
AU - Zhang, Mengqi
AU - Wang, Yilin
AU - Liu, Qun
AU - Zhang, Yaolei
AU - Sun, Haixi
AU - Seim, Inge
AU - Xu, Xun
AU - Liu, Xin
AU - Fan, Guangyi
PY - 2020
Y1 - 2020
N2 - Osteoglossiformes is a basal clade of teleost, evolving since the Jurassic period. The genomes of Osteoglossiformes species would shed light on the evolution and adaptation of teleost. Here, we established a chromosome-level genome of African arowana. Together with the genomes of pirarucu and Asian arowana, we found that they diverged at ∼106.1 million years ago (MYA) and ∼59.2 MYA, respectively, which are coincident with continental separation. Interestingly, we identified a dynamic genome evolution characterized by a fast evolutionary rate and a high pseudogenization rate in African arowana and pirarucu. Additionally, more transposable elements were found in Asian arowana which confer more gene duplications. Moreover, we found the contraction of olfactory receptor and the expansion of UGT in African arowana might be related to its transformation from carnivore to be omnivore. Taken together, we provided valuable genomic resource of Osteoglossidae and revealed the correlation of biogeography and teleost evolution.
AB - Osteoglossiformes is a basal clade of teleost, evolving since the Jurassic period. The genomes of Osteoglossiformes species would shed light on the evolution and adaptation of teleost. Here, we established a chromosome-level genome of African arowana. Together with the genomes of pirarucu and Asian arowana, we found that they diverged at ∼106.1 million years ago (MYA) and ∼59.2 MYA, respectively, which are coincident with continental separation. Interestingly, we identified a dynamic genome evolution characterized by a fast evolutionary rate and a high pseudogenization rate in African arowana and pirarucu. Additionally, more transposable elements were found in Asian arowana which confer more gene duplications. Moreover, we found the contraction of olfactory receptor and the expansion of UGT in African arowana might be related to its transformation from carnivore to be omnivore. Taken together, we provided valuable genomic resource of Osteoglossidae and revealed the correlation of biogeography and teleost evolution.
U2 - 10.1016/j.isci.2020.101662
DO - 10.1016/j.isci.2020.101662
M3 - Journal article
C2 - 33134892
SN - 2589-0042
VL - 23
JO - iScience
JF - iScience
IS - 11
M1 - 101662
ER -