Evidence map›Paper›PMID 27630657›Full record

ArticleFrontiers in plant science2016

Efficient Inactivation of Symbiotic Nitrogen Fixation Related Genes in Lotus japonicus Using CRISPR-Cas9.

Longxiang Wang, Longlong Wang, Qian Tan, Qiuling Fan, Hui Zhu, Zonglie Hong, Zhongming Zhang, Deqiang Duanmu

Open access · goldAbstract read
In one paragraph

Article in Frontiers in plant science, 2016. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 56 papers.

0numbers the graph read from it
0cells of the map it votes in
56citing papers in PubMed
26.0field-weighted citation impact, top 1% of its field
1 · What the graph read from it

What it found

Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.

The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.

2 · The registry

The trial behind it

Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.

Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.

3 · Its place in the literature

Who cites it

56 citing papers in PubMed, 122 citations in OpenAlex.

  1. Advances in Genetic Transformation ofPlants (Basel, Switzerland) · 2026
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  19. TheInternational journal of molecular sciences · 2023
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4 · The record

Corrections and comments

PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.

5 · Who and what money

Authors and funding

8 authors at 2 institutions in 2 countries.

Longxiang WangState Key Laboratory of Agricultural Microbiology, Huazhong Agricultural University Wuhan, China.
Longlong WangState Key Laboratory of Agricultural Microbiology, Huazhong Agricultural University Wuhan, China.
Qian TanState Key Laboratory of Agricultural Microbiology, Huazhong Agricultural University Wuhan, China.
Qiuling FanCollege of Life Science and Technology, Huazhong Agricultural University Wuhan, China.
Hui ZhuState Key Laboratory of Agricultural Microbiology, Huazhong Agricultural University Wuhan, China.
Zonglie HongDepartment of Plant, Soil, and Entomological Sciences and Program of Microbiology, Molecular Biology, and Biochemistry, University of Idaho Moscow, ID, USA.
Zhongming ZhangState Key Laboratory of Agricultural Microbiology, Huazhong Agricultural University Wuhan, China.
Deqiang DuanmuState Key Laboratory of Agricultural Microbiology, Huazhong Agricultural University Wuhan, China.
Huazhong Agricultural University · CNUniversity of Idaho · US

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

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.

Indexed as

CRISPR/Cas9genome editingleghemoglobinLotus japonicusnitrogen fixationsymbiosis

Identifiers

PMID27630657
PMCPMC5006320
OpenAlexW2516905769

What OpenQuestion holds

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Registered trials

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Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.