Efficient Inactivation of Symbiotic Nitrogen Fixation Related Genes in Lotus japonicus Using CRISPR-Cas9.
Efficient Inactivation of Symbiotic Nitrogen Fixation Related Genes in Lotus japonicus Using CRISPR-Cas9.
复制标题
使用 CRISPR-Cas9 有效灭活莲花共生固氮相关基因。
DOI:
10.3389/fpls.2016.01333
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发表时间:
2016
影响因子:
5.6
通讯作者:
Duanmu D
中科院分区:
文献类型:
--
作者:
Wang L;Wang L;Tan Q;Fan Q;Zhu H;Hong Z;Zhang Z;Duanmu D
The targeted genome editing technique, CRISPR/Cas9 system, has been widely used to modify genes of interest in a predictable and precise manner. In this study, we describe the CRISPR/Cas9-mediated efficient editing of representative SNF (symbiotic nitrogen fixation) related genes in the model legume Lotus japonicus via Agrobacterium-mediated stable or hairy root transformation. We first predicted nine endogenous U6 genes in Lotus and then demonstrated the efficacy of the LjU6-1 gene promoter in driving expression of single guide RNAs (sgRNAs) by using a split yellow fluorescence protein (YFP) reporter system to restore the fluorescence in Arabidopsis protoplasts. Next, we chose a customized sgRNA targeting SYMRK (symbiosis receptor-like kinase) loci and achieved ~35% mutagenic efficiency in 20 T0 transgenic plants, two of them containing biallelic homozygous mutations with a 2-bp deletion near the PAM region. We further designed two sgRNAs targeting three homologous leghemoglobin loci (LjLb1, LjLb2, LjLb3) for testing the possibility of generating multi-gene knockouts. 20 out of 70 hairy root transgenic plants exhibited white nodules, with at least two LjLbs disrupted in each plant. Compared with the constitutively active CaMV 35S promoter, the nodule-specific LjLb2 promoter was also effective in gene editing in nodules by hairy root transformation. Triple mutant knockout of LjLbs was also obtained by stable transformation using two sgRNAs. Collectively, these studies demonstrate that the CRISPR/Cas9 system should greatly facilitate functional analyses of SNF related genes in Lotus japonicus.
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影响因子:
46.9
作者:
Doench JG;Fusi N;Sullender M;Hegde M;Vaimberg EW;Donovan KF;Smith I;Tothova Z;Wilen C;Orchard R;Virgin HW;Listgarten J;Root DE
通讯作者:
Root DE
影响因子:
27.5
作者:
Ma, Xingliang;Zhang, Qunyu;Liu, Yao-Guang
通讯作者:
Liu, Yao-Guang
影响因子:
11.6
作者:
Chen, Tao;Zhu, Hui;Zhang, Zhongming
通讯作者:
Zhang, Zhongming
DOI:
10.1126/science.1232033
发表时间:
2013-02-15
期刊:
Science (New York, N.Y.)
影响因子:
--
作者:
Mali P;Yang L;Esvelt KM;Aach J;Guell M;DiCarlo JE;Norville JE;Church GM
通讯作者:
Church GM
DOI:
10.1073/pnas.0409339102
发表时间:
2005-02-08
影响因子:
11.1
作者:
Lloyd, A;Plaisier, CL;Drews, GN
通讯作者:
Drews, GN