U.S. flag

An official website of the United States government

Dot gov

Official websites use .gov
A .gov website belongs to an official government organization in the United States.

Https

Secure .gov websites use HTTPS
A lock ( ) or https:// means you’ve safely connected to the .gov website. Share sensitive information only on official, secure websites.

PubAg

Main content area

You searched for: Journal name Phytopathology Remove constraint Journal name: Phytopathology Publication year rev 7978-2022 Remove constraint Publication year rev: 7978-2022 Source 2022 v.112 no.1 Remove constraint Source: 2022 v.112 no.1
Start Over

Search

19  Search Results

1 - 19 of 19
Number of results to display per page

Search Results

1. Candidatus Liberibacter: From Movement, Host Responses, to Symptom Development of Citrus Huanglongbing

Author:
Sheo Shankar Pandey; Connor Hendrich; Maxuel O. Andrade; Nian Wang
Source:
Phytopathology 2022 v.112 no.1 pp. 55-68
ISSN:
0031-949X
Subject:
Candidatus Liberibacter; Citrus; biosynthesis; fimbriae; greening disease; immune response; insects; metabolomics; pathogenesis; phloem; plant pathology; proteomics; transcriptomics; Asia
Abstract:
... Candidatus Liberibacter spp. are fastidious α-proteobacteria that cause multiple diseases on plant hosts of economic importance, including the most devastating citrus disease: Huanglongbing (HLB). HLB was reported in Asia a century ago but has since spread worldwide. Understanding the pathogenesis of Candidatus Liberibacter spp. remains challenging as they are yet to be cultured in artificial medi ...
DOI:
10.1094/PHYTO-08-21-0354-FI

2. Cultural Management of Huanglongbing: Current Status and Ongoing Research

Author:
Berta Alquézar; Lourdes Carmona; Stefania Bennici; Marcelo P. Miranda; Renato B. Bassanezi; Leandro Peña
Source:
Phytopathology 2022 v.112 no.1 pp. 11-25
ISSN:
0031-949X
Subject:
Citrus; greening disease; pathogens; plant pathology
Abstract:
... Huanglongbing (HLB), formerly known as greening, is a bacterial disease restricted to some Asian and African regions until two decades ago. Nowadays, associated bacteria and their vectors have spread to almost all citrus-producing regions, and it is currently considered the most devastating citrus disease. HLB management can be approached in terms of prevention, limiting or avoiding pathogen and a ...
DOI:
10.1094/PHYTO-08-21-0358-IA

3. Detection and Identification of a ‘Candidatus Liberibacter solanacearum’ Species from Ash Tree Infesting Psyllids

Author:
Francis O. Wamonje; Ningxing Zhou; Ramandeep Bamrah; Tyler Wist; Sean M. Prager
Source:
Phytopathology 2022 v.112 no.1 pp. 76-80
ISSN:
0031-949X
Subject:
Bactericera maculipennis; Candidatus Liberibacter solanacearum; Fraxinus mandshurica; Fraxinus nigra; Nearctic region; death; dieback; insects; plant pathology; provenance; recombinant DNA; Saskatchewan; United Kingdom
Abstract:
... ‘Candidatus Liberibacter’ species are associated with severe, economically important diseases. Nearly all known species are putatively insect transmitted, specifically by psyllids. Detection of ‘Ca. Liberibacter’ in plants is complicated by their uneven distribution in host plants and largely fastidius nature. The death of black (Fraxinus nigra) and mancana (Fraxinus mandshurica) ash trees in Sask ...
DOI:
10.1094/PHYTO-02-21-0060-SC

4. Effect of Plant Age, Temperature, and Vector Load on ‘Candidatus Liberibacter solanacearum’ in Planta Titer and Shoot Proliferation Symptoms in Carrot

Author:
Atalya Keshet-Sitton; Alon Piasezky; Nofar Assoline; Orit Dror; Ofir Bahar
Source:
Phytopathology 2022 v.112 no.1 pp. 154-162
ISSN:
0031-949X
Subject:
Candidatus Liberibacter solanacearum; Gram-negative bacteria; Psyllidae; Spiroplasma; bacterial growth; brooms; carrots; disease progression; haplotypes; plant age; plant pathology; spring; summer; temperature; Israel
Abstract:
... A decade ago, shoot proliferation symptoms (i.e., witches’ broom) in carrots were believed to be the cause of ‘Candidatus Phytoplasma’ and Spiroplasma infection, yet in recent years this association appeared to have weakened, and a closer association was found with the yet-unculturable, psyllid-transmitted Gram-negative bacterium ‘Candidatus Liberibacter solanacearum’. In Israel, carrots are grown ...
DOI:
10.1094/PHYTO-04-21-0135-FI

5. An Excised Leaf Assay to Measure Acquisition of ‘Candidatus Liberibacter asiaticus’ by Psyllids Associated with Citrus Huanglongbing Disease

Author:
David O. Igwe; Steven A. Higgins; Michelle Heck
Source:
Phytopathology 2022 v.112 no.1 pp. 69-75
ISSN:
0031-949X
Subject:
Candidatus Liberibacter asiaticus; Citrus; Diaphorina citri; Psyllidae; genes; greening disease; instars; leaves; pathogens; plant pathology; quantitative polymerase chain reaction
Abstract:
... Huanglongbing, or citrus greening disease, is the most serious disease of citrus worldwide and is associated with plant infection by ‘Candidatus Liberibacter asiaticus’ (CLas) and other Liberibacter species. CLas is transmitted by Diaphorina citri, the Asian citrus psyllid, in a circulative propagative manner. Circulative propagative transmission is a complex process comprising at least three step ...
DOI:
10.1094/PHYTO-03-21-0124-SC

6. Host Plant Adaptation Drives Changes in Diaphorina citri Proteome Regulation, Proteoform Expression, and Transmission of ‘Candidatus Liberibacter asiaticus’, the Citrus Greening Pathogen

Author:
John S. Ramsey; El-Desouky Ammar; Jaclyn E. Mahoney; Keith Rivera; Richard Johnson; David O. Igwe; Theodore W. Thannhauser; Michael J. MacCoss; David G. Hall; Michelle Heck
Source:
Phytopathology 2022 v.112 no.1 pp. 101-115
ISSN:
0031-949X
Subject:
Candidatus Liberibacter asiaticus; Citrus macrophylla; Citrus medica; Diaphorina citri; Murraya paniculata; Psyllidae; cytoskeleton; gel electrophoresis; host plants; immunity; insect vectors; pathogens; pests; plant adaptation; plant pathology; protein synthesis; proteome; proteomics; vector competence
Abstract:
... The Asian citrus psyllid (Diaphorina citri) is a pest of citrus and the primary insect vector of the bacterial pathogen, ‘Candidatus Liberibacter asiaticus’ (CLas), which is associated with citrus greening disease. The citrus relative Murraya paniculata (orange jasmine) is a host plant of D. citri but is more resistant to CLas compared with all tested Citrus genotypes. The effect of host switching ...
DOI:
10.1094/PHYTO-06-21-0275-R

7. The Impact of Diaphorina citri-Vectored ‘Candidatus Liberibacter asiaticus’ on Citrus Metabolism

Author:
Emily M. T. Padhi; Karla J. Araujo; Elizabeth Mitrovic; Marylou Polek; Kris E. Godfrey; Carolyn M. Slupsky
Source:
Phytopathology 2022 v.112 no.1 pp. 197-204
ISSN:
0031-949X
Subject:
Candidatus Liberibacter asiaticus; Citrus; Diaphorina citri; Psyllidae; bacteria; disease diagnosis; glucose; greening disease; leaves; lemons; magnetism; metabolism; metabolites; metabolome; metabolomics; plant pathology; principal component analysis; quantitative polymerase chain reaction; quinic acid; spectroscopy; water solubility
Abstract:
... ‘Candidatus Liberibacter asiaticus’ is associated with the devastating citrus disease Huanglongbing (HLB). It is transmitted by grafting infected material to healthy plants and by the feeding of the Asian citrus psyllid (Diaphorina citri). Previously, we demonstrated that a metabolomics approach using proton-nuclear magnetic resonance spectroscopy discriminates healthy from diseased plants via gra ...
DOI:
10.1094/PHYTO-06-21-0240-FI

8. Probing the Application of OmpA-Derived Peptides to Disrupt the Acquisition of ‘Candidatus Liberibacter asiaticus’ by Diaphorina citri

Author:
Marcus Vinícius Merfa; Eduarda Regina Fischer; Mariana de Souza e Silva; Carolina Sardinha Francisco; Helvécio Della Coletta-Filho; Alessandra Alves de Souza
Source:
Phytopathology 2022 v.112 no.1 pp. 163-172
ISSN:
0031-949X
Subject:
Candidatus Liberibacter americanus; Candidatus Liberibacter asiaticus; Citrus; Diaphorina citri; Psyllidae; artificial diets; bacterial outer membranes; clams; greening disease; insect vectors; oranges; outer membrane proteins; peptides; plant pathology; Brazil
Abstract:
... Huanglongbing (HLB) is currently the most devastating disease of citrus worldwide. Both bacteria ‘Candidatus Liberibacter asiaticus’ (CLas) and ‘Candidatus Liberibacter americanus’ (CLam) are associated with HLB in Brazil but with a strong prevalence of CLas over CLam. Conventionally, HLB management focuses on controlling the insect vector population (Diaphorina citri; also known as Asian citrus p ...
DOI:
10.1094/PHYTO-06-21-0252-FI

9. Generous Hosts: ‘Candidatus Liberibacter asiaticus’ Growth in Madagascar Periwinkle (Catharanthus roseus) Highlights Its Nutritional Needs

Author:
Nabil Killiny
Source:
Phytopathology 2022 v.112 no.1 pp. 89-100
ISSN:
0031-949X
Subject:
Candidatus Liberibacter asiaticus; Catharanthus roseus; Citrus sinensis; bacteria; bacterial growth; carbon; citrates; fumarates; gas chromatography-mass spectrometry; leaves; malates; metabolites; mitochondria; oranges; pH; phloem; plant pathology; sap; succinic acid; tricarboxylic acid cycle
Abstract:
... ‘Candidatus Liberibacter asiaticus’, the putative causal agent of citrus greening, is not available in pure culture yet. In addition to trees of citrus and citrus relatives, ‘Ca. L. asiaticus’ can grow in Madagascar periwinkle (Catharanthus roseus). Using gas chromatography-mass spectrometry, we compared the phloem sap composition in sweet orange ‘Valencia’ (Citrus sinensis) and periwinkle plants ...
DOI:
10.1094/PHYTO-05-21-0200-FI

10. Growth of ‘Candidatus Liberibacter asiaticus’ in Commercial Grapefruit Juice-Based Media Formulations Reveals Common Cell Density-Dependent Transient Behaviors

Author:
Marcus V. Merfa; Eber Naranjo; Deepak Shantharaj; Leonardo De La Fuente
Source:
Phytopathology 2022 v.112 no.1 pp. 131-144
ISSN:
0031-949X
Subject:
Candidatus Liberibacter asiaticus; Citrus; bacteria; callus; genome; grapefruit juice; grapefruits; greening disease; inoculum; plant pathology; viability; virulence
Abstract:
... The phloem-restricted, insect-transmitted bacterium ‘Candidatus Liberibacter asiaticus’ (CLas) is associated with huanglongbing (HLB), the most devastating disease of citrus worldwide. The inability to culture CLas impairs the understanding of its virulence mechanisms and the development of effective management strategies to control this incurable disease. Previously, our research group used comme ...
DOI:
10.1094/PHYTO-06-21-0228-FI

11. High Spatial Resolution Fluorescence Imagery for Optimized Pest Management in a Huanglongbing-Infected Citrus Grove

Author:
Ruth F. Menger; Rachelle A. Rehberg; Pankaj Trivedi; Charles S. Henry; Thomas Borch
Source:
Phytopathology 2022 v.112 no.1 pp. 173-179
ISSN:
0031-949X
Subject:
Citrus; Diaphorina citri; Psyllidae; aerial application; disease control; disease vectors; fluorescence; greening disease; insecticide application; insecticides; leaves; plant pathology; risk; tractors; trees; Florida
Abstract:
... Huanglongbing (HLB), or citrus greening disease, has significantly decreased citrus production all over the world. The disease management currently depends on the efficient application and adequate distribution of insecticides to reduce the density of the disease vector, the Asian citrus psyllid. Here, we use a novel fluorescent-based method to evaluate insecticide distribution in an HLB-infected ...
DOI:
10.1094/PHYTO-05-21-0211-FI

12. Identification of a Chromosomal Deletion Mutation and the Dynamics of Two Major Populations of ‘Candidatus Liberibacter asiaticus’ in Its Hosts

Author:
Cheryl M. Armstrong; Lijuan Zhou; Weiqi Luo; Ozgur Batuman; Olufemi J. Alabi; Yongping Duan
Source:
Phytopathology 2022 v.112 no.1 pp. 81-88
ISSN:
0031-949X
Subject:
Candidatus Liberibacter asiaticus; Citrus; DNA; Psyllidae; genome; grapefruits; greening disease; mutants; plant pathology; plasticity; population dynamics; selection pressure; sequence deletion
Abstract:
... ‘Candidatus Liberibacter asiaticus’ (Las) is the prominent species of Liberibacter associated with huanglongbing, a devastating disease of citrus worldwide. In this study, we report the identification of an ∼8.3-kb DNA region of the Las genome containing eight putative open reading frames flanked by two inverted repeats, which was not present in the Las str. psy62 genome. Comparisons with other ge ...
DOI:
10.1094/PHYTO-08-21-0325-FI

13. Intracellular Life Cycle of ‘Candidatus Liberibacter asiaticus’ Inside Psyllid Gut Cells

Author:
Chun-Yi Lin; Diann Achor; Amit Levy
Source:
Phytopathology 2022 v.112 no.1 pp. 145-153
ISSN:
0031-949X
Subject:
Candidatus Liberibacter asiaticus; Diaphorina citri; autophagy; bacteria; cell membranes; endocytosis; greening disease; insects; midgut; pathogens; plant pathology; vacuoles
Abstract:
... ‘Candidatus Liberibacter asiaticus’ (CLas), the devastating pathogen related to Huanglongbing (HLB), is a phloem-limited, fastidious, insect-borne bacterium. Rapid spread of HLB disease relies on CLas-efficient propagation in the vector, the Asian citrus psyllid Diaphorina citri, in a circulative manner. Understanding the intracellular lifecycle of CLas in psyllid midgut, the major organ for CLas ...
DOI:
10.1094/PHYTO-07-21-0301-FI

14. Linking Climate Variables to Large-Scale Spatial Pattern and Risk of Citrus Huanglongbing: A Hierarchical Bayesian Modeling Approach

Author:
Kaique S. Alves; Lisa A. Rothmann; Emerson M. Del Ponte
Source:
Phytopathology 2022 v.112 no.1 pp. 189-196
ISSN:
0031-949X
Subject:
Bayesian theory; Citrus; citriculture; databases; dry season; greening disease; models; orchards; plant pathology; principal component analysis; rain; risk; temperature; wet season; wind speed; Brazil
Abstract:
... Huanglongbing (HLB) is one of the most important diseases affecting citriculture in the world. Knowledge of climatic factors linked to HLB risk at large spatial scales is limited. We gathered HLB presence and absence data from official surveys conducted in the state of Minas Gerais, Brazil, over 13 years. The total count of orange and mandarin orchards, and mean orchard area, normalized to a spati ...
DOI:
10.1094/PHYTO-05-21-0219-FI

15. Made for Each Other: Vector–Pathogen Interfaces in the Huanglongbing Pathosystem

Author:
Nabil Killiny
Source:
Phytopathology 2022 v.112 no.1 pp. 26-43
ISSN:
0031-949X
Subject:
Candidatus Liberibacter asiaticus; Citrus; Diaphorina citri; adenosine triphosphate; animals; bacteria; endosymbionts; energy metabolism; fecundity; greening disease; host plants; immune system; insect vectors; longevity; plant pathology; tricarboxylic acid cycle
Abstract:
... Citrus greening, or huanglongbing (HLB), currently is the most destructive disease of citrus. HLB disease is putatively caused by the phloem-restricted α-proteobacterium ‘Candidatus Liberibacter asiaticus’. This bacterium is transmitted primarily by the Asian citrus psyllid Diaphorina citri (Hemiptera: Liviidae). Most animal pathogens are considered pathogenic to their insect vectors, whereas the ...
DOI:
10.1094/PHYTO-05-21-0182-FI

16. Prevalent Transmission of ‘Candidatus Liberibacter asiaticus’ over ‘Ca. Liberibacter americanus’ in a Long-Term Controlled Environment

Author:
Maria Cândida de Godoy Gasparoto; Isabela Vescove Primiano; Renato B. Bassanezi; Silvia Afonseca Lourenço; Luiz H. Montesino; Nelson Arno Wulff; Elaine Cristina Martins; Armando Bergamin Filho; Lilian Amorim
Source:
Phytopathology 2022 v.112 no.1 pp. 180-188
ISSN:
0031-949X
Subject:
Candidatus Liberibacter americanus; Candidatus Liberibacter asiaticus; Citrus; Diaphorina citri; Psyllidae; clams; greening disease; inoculum; insect vectors; leaves; mixed infection; oranges; plant pathology; quantitative polymerase chain reaction; Brazil
Abstract:
... In Brazil, citrus huanglongbing (HLB) is associated with ‘Candidatus Liberibacter americanus’ (CLam) and ‘Ca. Liberibacter asiaticus’ (CLas). However, there are few studies about HLB epidemiology when both Liberibacter spp. and its insect vector, the Asian citrus psyllid (ACP, Diaphorina citri), are present. The objective of this work was to compare the transmission of HLB by ACP when both CLam an ...
DOI:
10.1094/PHYTO-06-21-0239-FI

17. A Review of the ‘Candidatus Liberibacter africanus’ Citrus Pathosystem in Africa

Author:
John V. da Graça; Glynnis Cook; Inusa J. Ajene; Tim G. Grout; Gerhard Pietersen; Ronel Roberts; Rachelle Bester; Mathys C. Pretorius; Hans J. Maree
Source:
Phytopathology 2022 v.112 no.1 pp. 44-54
ISSN:
0031-949X
Subject:
Candidatus Liberibacter africanus; Citrus; Trioza erytreae; disease transmission; geographical distribution; greening disease; insect vectors; pandemic; pathogens; plant pathology; South Africa
Abstract:
... It has been nearly 100 years since citrus growers in two distinct regions in the northern provinces of South Africa noticed unusual symptoms in their citrus trees, causing significant crop losses. They had no idea that these symptoms would later become part of an almost global pandemic of a disease called greening or huanglongbing (HLB). The rapid spread of the disease indicated that it might be c ...
DOI:
10.1094/PHYTO-07-21-0296-FI

18. Transcriptome Profiling of ‘Candidatus Liberibacter asiaticus’ in Citrus and Psyllids

Author:
Agustina De Francesco; Amelia H. Lovelace; Dipan Shaw; Min Qiu; Yuanchao Wang; Fatta Gurung; Veronica Ancona; Chunxia Wang; Amit Levy; Tao Jiang; Wenbo Ma
Source:
Phytopathology 2022 v.112 no.1 pp. 116-130
ISSN:
0031-949X
Subject:
Candidatus Liberibacter asiaticus; Citrus; Diaphorina citri; Psyllidae; RNA; bacteria; cell walls; energy; ferritin; flagellum; gene expression; greening disease; host plants; insect vectors; pathogens; phloem; plant pathology; porins; transcriptome; virulence
Abstract:
... ‘Candidatus Liberibacter asiaticus’ (Las) is an emergent bacterial pathogen that is associated with the devastating citrus huanglongbing (HLB). Vectored by the Asian citrus psyllid, Las colonizes the phloem tissue of citrus, causing severe damage to infected trees. So far, cultivating pure Las culture in axenic media has not been successful, and dual-transcriptome analyses aiming to profile gene e ...
DOI:
10.1094/PHYTO-08-21-0327-FI

19. ‘Candidatus Liberibacter’ Pathosystems at the Forefront of Agricultural and Biological Research Challenges

Author:
Elizabeth A. Pierson; Jaime Cubero; Caroline Roper; Judith K. Brown; Clive H. Bock; Nian Wang
Source:
Phytopathology 2022 v.112 no.1 pp. 7-10
ISSN:
0031-949X
Subject:
Acizzia; Apiaceae; Bactericera cockerelli; Cacopsylla pyri; Candidatus Liberibacter; Citrus; Convolvulaceae; Cytisus scoparius; Diaphorina citri; Polygonaceae; Rhizobiaceae; Trioza erytreae; Urtica dioica; brooms; carrots; celery; clams; discoloration; eggplants; fruits; greening disease; haplotypes; herbaria; parsley; pears; plant pathology; potatoes; tomatoes; zebra chip disease; Finland; Mediterranean region; New Zealand; Puerto Rico; Spain; Western European region
Abstract:
... ‘Candidatus Liberibacter’ species are Gram-negative, phloem-colonizing, psyllid-transmitted fastidious bacteria, classified in the Rhizobiaceae (class Alphaproteobacteria) (Bové 2006). Thus far, seven Liberibacter species have been identified worldwide (Hansen et al. 2008; Jagoueix et al. 1994, 1997; Leonard et al. 2012; Liefting et al. 2008; Morris et al. 2017; Raddadi et al. 2011; Texeira et al. ...
DOI:
10.1094/PHYTO-12-21-0497-FI