First Report of a Huanglongbing-Like Disease of Citrus in Sao Paulo State, Brazil and Association of a New Liberibacter Species, "Candidatus Liberibacter americanus", with the Disease

Plant Disease
D C TexeiraJoseph Marie Bové

Abstract

Huanglongbing (HLB) (ex-greening) is one of the most serious diseases of citrus. The causal agent is a noncultured, sieve tube-restricted α-proteobacterium, "Candidatus Liberibacter africanus" in Africa and "Candidatus Liberibacter asiaticus" in Asia (2). The disease has never been reported from the American continent. However, Diaphorina citri, the Asian psyllid vector of HLB, is found in South, Central, and North America (Florida and Texas). Early in 2004, leaf and fruit symptoms resembling those of HLB were observed in several sweet orange orchards near the city of Araraquara, Sao Paulo State. Leaf mottling on small and large leaves was the major symptom. Shoots with affected leaves were yellowish. Fruits were small and lopsided, contained many aborted seeds, and appeared more severely affected than were plants infected with classic HLB. Forty-three symptomatic samples and twenty-five samples of symptomless sweet orange leaves from five farms were analyzed for the presence of the HLB-liberibacters using polymerase chain reaction (PCR) with two sets of HLB-specific primers for amplification of 16S rDNA (2,3) and ribosomal protein genes (1). None of the 43 symptomatic leaf samples gave a positive PCR amplification, while HLB-a...Continue Reading

Citations

Jun 21, 2019·Journal of Economic Entomology·B A RasowoC Borgemeister
Nov 5, 2005·Applied and Environmental Microbiology·C BastianelS Eveillard
Sep 17, 2005·International Journal of Systematic and Evolutionary Microbiology·Diva do Carmo TeixeiraJoseph Bové
Nov 15, 2014·International Journal of Systematic and Evolutionary Microbiology·Ronel RobertsGerhard Pietersen
Jan 22, 2011·FEMS Microbiology Reviews·Geetanchaly Nadarasah, John Stavrinides
May 8, 2010·Applied Microbiology and Biotechnology·Adrián Alberto VojnovMarìa Rosa Marano
Jan 16, 2013·Annual Review of Entomology·Elizabeth E Grafton-CardwellPhilip A Stansly
Oct 16, 2015·Journal of Integrative Plant Biology·John V da GraçaHongwei Zhao
Dec 20, 2018·Pest Management Science·Patrícia A de C FelisbertoSilvio A Lopes
Dec 11, 2014·Pest Management Science·Dhana Raj Boina, Jeffrey R Bloomquist
Jan 14, 2017·Royal Society Open Science·Renan Batista QueirozSimon L Elliot
Sep 4, 2016·Canadian Journal of Microbiology·Roberto Arredondo ValdésYisa M Ochoa Fuentes
Jul 11, 2009·Molecular Plant-microbe Interactions : MPMI·Yongping DuanTim Gottwald
Sep 4, 2015·Pest Management Science·Haroldo Xl VolpeMarcelo P Miranda

❮ Previous
Next ❯

Related Concepts

Trending Feeds

COVID-19

Coronaviruses encompass a large family of viruses that cause the common cold as well as more serious diseases, such as the ongoing outbreak of coronavirus disease 2019 (COVID-19; formally known as 2019-nCoV). Coronaviruses can spread from animals to humans; symptoms include fever, cough, shortness of breath, and breathing difficulties; in more severe cases, infection can lead to death. This feed covers recent research on COVID-19.

Blastomycosis

Blastomycosis fungal infections spread through inhaling Blastomyces dermatitidis spores. Discover the latest research on blastomycosis fungal infections here.

Nuclear Pore Complex in ALS/FTD

Alterations in nucleocytoplasmic transport, controlled by the nuclear pore complex, may be involved in the pathomechanism underlying multiple neurodegenerative diseases including Amyotrophic Lateral Sclerosis and Frontotemporal Dementia. Here is the latest research on the nuclear pore complex in ALS and FTD.

Applications of Molecular Barcoding

The concept of molecular barcoding is that each original DNA or RNA molecule is attached to a unique sequence barcode. Sequence reads having different barcodes represent different original molecules, while sequence reads having the same barcode are results of PCR duplication from one original molecule. Discover the latest research on molecular barcoding here.

Chronic Fatigue Syndrome

Chronic fatigue syndrome is a disease characterized by unexplained disabling fatigue; the pathology of which is incompletely understood. Discover the latest research on chronic fatigue syndrome here.

Evolution of Pluripotency

Pluripotency refers to the ability of a cell to develop into three primary germ cell layers of the embryo. This feed focuses on the mechanisms that underlie the evolution of pluripotency. Here is the latest research.

Position Effect Variegation

Position Effect Variagation occurs when a gene is inactivated due to its positioning near heterochromatic regions within a chromosome. Discover the latest research on Position Effect Variagation here.

STING Receptor Agonists

Stimulator of IFN genes (STING) are a group of transmembrane proteins that are involved in the induction of type I interferon that is important in the innate immune response. The stimulation of STING has been an active area of research in the treatment of cancer and infectious diseases. Here is the latest research on STING receptor agonists.

Microbicide

Microbicides are products that can be applied to vaginal or rectal mucosal surfaces with the goal of preventing, or at least significantly reducing, the transmission of sexually transmitted infections. Here is the latest research on microbicides.