Abstract:
:Bananas are a staple food source and a major export commodity worldwide. The Cavendish dessert banana is a triploid AAA genome type and accounts for around 47% of global production. Being essentially sterile, genetic modification is perhaps the only pathway available to improve this cultivar. In this study, we used the CRISPR/Cas9 gene editing system to deliver a self-cleaving polycistronic guide RNA (gRNA) designed to target exon 1 of the Phytoene desaturase (PDS) gene in the Cavendish cultivar "Williams". Genotyping of 19 independent events showed a 100% PDS modification rate primarily in the form of insertions (1-105 nt) or deletions (1-55 nt) (indels) at the predicted cleavage site. Tri-allelic disruptive modifications were observed in 63% of plants and resulted in both albinism and dwarfing. Pale green (16%) and wildtype green (21%) phenotypes generally correlated with in-frame indels in at least one of the three PDS alleles. Editing efficiency was dependent on both target site selection and Cas9 abundance. This is the first report of a highly effective CRISPR/Cas9 modification system using a polycistronic gRNA in Cavendish banana. Such an editing platform will be of considerable utility for the development of disease resistance and novel agro-traits in this commercially important cultivar into the future.
journal_name
Transgenic Resjournal_title
Transgenic researchauthors
Naim F,Dugdale B,Kleidon J,Brinin A,Shand K,Waterhouse P,Dale Jdoi
10.1007/s11248-018-0083-0subject
Has Abstractpub_date
2018-10-01 00:00:00pages
451-460issue
5eissn
0962-8819issn
1573-9368pii
10.1007/s11248-018-0083-0journal_volume
27pub_type
杂志文章abstract::Multiple infections of Sweet potato feathery mottle virus (SPFMV), Sweet potato chlorotic stunt virus (SPCSV), Sweet potato virus G (SPVG) and Sweet potato mild mottle virus (SPMMV) cause a devastating synergistic disease complex of sweet potato (Ipomoea batatas Lam.) in KwaZulu-Natal, South Africa. In order to addres...
journal_title:Transgenic research
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journal_title:Transgenic research
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journal_title:Transgenic research
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journal_title:Transgenic research
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journal_title:Transgenic research
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journal_title:Transgenic research
pub_type: 杂志文章,评审
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journal_title:Transgenic research
pub_type: 杂志文章,评审
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journal_title:Transgenic research
pub_type: 杂志文章
doi:10.1007/BF01980212
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journal_title:Transgenic research
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doi:10.1007/s11248-020-00215-w
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journal_title:Transgenic research
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doi:10.1007/s11248-014-9858-0
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journal_title:Transgenic research
pub_type: 杂志文章
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pub_type: 杂志文章
doi:10.1007/s11248-005-0389-6
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pub_type: 杂志文章
doi:10.1007/s11248-020-00208-9
更新日期:2020-08-01 00:00:00
abstract::Sugarbeets carrying superoxide dismutase transgenes were developed in order to investigate the possibility of enhancing their resistance to oxidative stress. Binary T-DNA vectors carrying the chloroplastic and cytosolic superoxide dismutase genes from tomato, were used for Agrobacterium-mediated transformation of suga...
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pub_type: 杂志文章
doi:10.1023/b:trag.0000034610.35724.04
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journal_title:Transgenic research
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