Research finds the key role of simple repetitive sequences in the adaptive evolution of shrimp

March 9, reporters from China Ke Xueyuan Institute of Marine was informed by the research paper flower research group led by Fu-completed "simple sequence repeat shrimp genome plasticity and promote adaptive evolution," published in Nature child "Communication - biology" ( " Communications Biology) published online.

Zhong Keyuan Associate Professor and researcher Zhang Xiaojun, Nankai University, Professor Wang Min is the first article co-author of the Yuan Jianbo ocean.

This study aimed at the explosive expansion of simple sequence repeat (SSR) in the shrimp genome, and proposed for the first time a new mechanism for the rapid expansion of SSR in the genome, revealing the plasticity and adaptive evolution of SSR in the shrimp genome.

Li Fuhua said that in order to explore the distribution characteristics and functions of SSR, the researchers completed the whole genome sequencing and assembly of another prawn, Penaeus chinensis, and constructed the chromosomes of Litopenaeus vannamei and Penaeus chinensis based on Hi-C sequencing.

Li Fuhua said that this study found for the first time a new mechanism for the explosive expansion of SSR, which is different from the traditionally believed replication sliding mutation model.

Although Penaeus chinensis and Penaeus vannamei are closely related, there are significant differences in their ability to adapt to salinity.