Evidence map›Paper›PMID 32127552›Full record

ArticleScientific reports2020

Distribution of Candidatus Liberibacter species in Eastern Africa, and the First Report of Candidatus Liberibacter asiaticus in Kenya.

Inusa J Ajene, Fathiya M Khamis, Barbara van Asch, Gerhard Pietersen, Nurhussen Seid, Ivan Rwomushana, Fidelis L O Ombura, George Momanyi, Pole Finyange, Brenda A Rasowo and 3 more

Open access · goldAbstract read
In one paragraph

Article in Scientific reports, 2020. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 18 papers.

0numbers the graph read from it
0cells of the map it votes in
18citing papers in PubMed
8.8field-weighted citation impact, top 2% 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

18 citing papers in PubMed, 46 citations in OpenAlex.

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  12. Genetic diversity ofEcology and evolution · 2022
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  13. The African citrus psyllidFrontiers in plant science · 2022
    Article
  14. Photodynamic control of citrus crop diseases.World journal of microbiology & biotechnology · 2021
    Review
  15. Article
  16. Article
  17. Article
  18. Pest categorisation ofEFSA journal. European Food Safety Authority · 2021
    Article
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

13 authors at 6 institutions in 3 countries.

Inusa J AjeneInternational Center of Insect Physiology and Ecology, Nairobi, Kenya.
Fathiya M KhamisInternational Center of Insect Physiology and Ecology, Nairobi, Kenya. fkhamis@icipe.org.
Barbara van AschDepartment of Genetics, Stellenbosch University, Stellenbosch, South Africa.
Gerhard PietersenDepartment of Genetics, Stellenbosch University, Stellenbosch, South Africa.
Nurhussen SeidAwassa University, Awassa, Ethiopia.
Ivan RwomushanaCAB International, Nairobi, Kenya.
Fidelis L O OmburaInternational Center of Insect Physiology and Ecology, Nairobi, Kenya.
George MomanyiKenya Plant Health Inspectorate Service, Nairobi, Kenya.
Pole FinyangeKenya Agricultural and Livestock Research Organization, Matuga, Kenya.
Brenda A RasowoInternational Center of Insect Physiology and Ecology, Nairobi, Kenya.
Chrysantus M TangaInternational Center of Insect Physiology and Ecology, Nairobi, Kenya.
Samira MohammedInternational Center of Insect Physiology and Ecology, Nairobi, Kenya.
Sunday EkesiInternational Center of Insect Physiology and Ecology, Nairobi, Kenya.
International Centre of Insect Physiology and Ecology · KEStellenbosch University · ZAAhmadu Bello University · NGCABI Kenya · KEKenya Agricultural and Livestock Research Organization · KEKenya Plant Health Inspectorate Services · KE

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Huanglongbing (HLB) is a serious disease of Citrus sp. worldwide. In Africa and the Mascarene Islands, a similar disease is known as African citrus greening (ACG) and is associated with the bacterium Candidatus Liberibacter africanus (Laf). In recent years, Candidatus Liberibacter asiaticus (Las) associated with the severe HLB has been reported in Ethiopia. Thus, we aimed to identify the Liberibacter species affecting citrus, the associated vectors in Eastern Africa and their ecological distribution. We assessed the presence of generic Liberibacter in symptomatic leaf samples by quantitative PCR. Subsequently, we sequenced the 50 S ribosomal protein L10 (rplJ) gene region in samples positive for Liberibacters and identified the species by comparison with public sequence data using phylogenetic reconstruction and genetic distances. We detected generic Liberibacter in 26%, 21% and 66% of plants tested from Uganda, Ethiopia and Kenya, respectively. The rplJ sequences revealed the most prevalent Liberibacters in Uganda and Ethiopia were LafCl (22%) and Las (17%), respectively. We detected Las in Kenya for the first time from three sites in the coastal region. Finally, we modelled the potential habitat suitability of Las in Eastern Africa using MaxEnt. The projection showed large areas of suitability for the pathogen in the three countries surveyed. Moreover, the potential distribution in Eastern Africa covered important citrus-producing parts of Ethiopia, Kenya, Uganda and Tanzania, and included regions where the disease has not been reported. These findings will guide in the development of an integrated pest management strategy to ACG/HLB management in Africa.

Indexed as

CitrusHelicobacter heilmanniiKenyaPlant DiseasesSequence Analysis

Identifiers

PMID32127552
PMCPMC7054587
OpenAlexW3009317159

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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.