

FOLLOWUS
1.College of Marine Life Sciences, Ocean University of China, Qingdao 266003, China
2.Institute of Evolution and Marine Biodiversity, Ocean University of China, Qingdao 266003, China
3.Key Laboratory of Marine Genetics and Breeding of Ministry of Education, Ocean University of China, Qingdao 266003, China
yguanpin@ouc.edu.cn
Received:30 August 2022,
Accepted:13 October 2022,
Online First:24 October 2022,
Published:01 November 2023
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GUO Li,YANG Guanpin.Nannochloropsis artificial chromosomes (NannoACs) loom on the horizon[J].Journal of Oceanology and Limnology,2023,41(06):2336-2347.
Species in genus
Nannochloropsis
especially
N
.
oceanica
and
N
.
gaditana
have been evolving as the model microalgae for both application and theory studies. The position effect of genome
integration
the carrying capability limitation of integrative vectors and the instability of non-integrative vectors have hindered
Nannochloropsis
genetic modification with concatenate genes and extremely long DNA fragments. The molecular tools including genetic transformation
homologous recombination
gene edition
gene stacking and episome vectors for transient gene expression and diverse reporters and selection markers have been rapidly developing in
Nannochloropsis
species. The construction of animal and plant artificial chromosomes with “top down” strategy has set fine examples for the construction of
Nannochloropsis
artificial chromosomes (NannoACs). It seems that the methods and materials to set the foundation for constructing NannoACs are at hands. In this review
we outlined the current status of transgenes in
Nannochloropsis
species
summarized the limitations of both integrative and non-integrative vectors
and proposed a tentative approach to construct NannoACs by doubling and stabilizing the genome first
and then truncating the natural chromosomes. NannoACs once constructed will facilitate transferring the desired traits and concatenate genes into
Nannochloropsis
genetic backgrounds
thus contributing towards its genetic improvement and synthetic biological studies.
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