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1. Genetic diversity of Pseudomonas syringae pv. actinidiae, pathogen of kiwifruit bacterial canker

Author:
Sawada, H.; Fujikawa, T.
Source:
Plant pathology 2019 v.68 no.7 pp. 1235-1248
ISSN:
0032-0862
Subject:
Pseudomonas syringae pv. actinidiae; Pseudomonas syringae pv. theae,   etc   ; bacteria; bacterial canker; biosynthesis; genes; genetic variation; genomic islands; interspersed repetitive sequences; kiwifruit; pathovars; phaseolotoxin; phytotoxins; plasmids; virulence; Japan;     Show all 16 Subjects
Abstract:
... Bacterial canker disease of kiwifruit currently occurs in at least 15 countries, causing serious damage. The causative agent of the disease is Pseudomonas syringae pv. actinidiae (Psa), which is genetically diverse and is currently classified into five biovars, namely, biovars 1, 2, 3, 5 and 6. In Japan, four biovars except biovar 2 have been found so far. These biovars have been confirmed to have ...
DOI:
10.1111/ppa.13040

2. Recombination of ecologically and evolutionarily significant loci maintains genetic cohesion in the Pseudomonas syringae species complex

Author:
Dillon, Marcus M.; Thakur, Shalabh; Almeida, Renan N. D.; Wang, Pauline W.; Weir, Bevan S.; Guttman, David S.
Source:
Genome biology 2019 v.20 no.1 pp. 3
ISSN:
1474-760X
Subject:
Pseudomonas syringae,   etc   ; crops; genes; genetic recombination; genetic variation; loci; phylogeny; sequence analysis; type III secretion system;     Show all 9 Subjects
Abstract:
... BACKGROUND: Pseudomonas syringae is a highly diverse bacterial species complex capable of causing a wide range of serious diseases on numerous agronomically important crops. We examine the evolutionary relationships of 391 agricultural and environmental strains using whole-genome sequencing and evolutionary genomic analyses. RESULTS: We describe the phylogenetic distribution of all 77,728 ortholog ...
DOI:
10.1186/s13059-018-1606-y

3. A Remorin from Nicotiana benthamiana Interacts with the Pseudomonas Type-III Effector Protein HopZ1a and is Phosphorylated by the Immune-Related Kinase PBS1

Author:
Albers, Philip; Üstün, Suayib; Witzel, Katja; Kraner, Max; Börnke, Frederik
Source:
Molecular plant-microbe interactions 2019 v.32 no.9 pp. 1229-1242
ISSN:
0894-0282
Subject:
Pseudomonas syringae,   etc   ; Nicotiana benthamiana; elicitors; gene overexpression; host-pathogen relationships; immunity; phosphotransferases (kinases); plasma membrane; virulence;     Show all 9 Subjects
Abstract:
... The plasma membrane (PM) is at the interface of plant–pathogen interactions and, thus, many bacterial type-III effector (T3E) proteins target membrane-associated processes to interfere with immunity. The Pseudomonas syringae T3E HopZ1a is a host cell PM-localized effector protein that has several immunity-associated host targets but also activates effector-triggered immunity in resistant backgroun ...
DOI:
10.1094/MPMI-04-19-0105-R

4. Regulated Disorder: Posttranslational Modifications Control the RIN4 Plant Immune Signaling Hub

Author:
Toruño, Tania Y.; Shen, Mingzhe; Coaker, Gitta; Mackey, David
Source:
Molecular plant-microbe interactions 2019 v.32 no.1 pp. 56-64
ISSN:
0894-0282
Subject:
Pseudomonas syringae,   etc   ; Arabidopsis; embryophytes; immune response; pathogens; plasma membrane; post-translational modification; proteins; signal transduction; virulence;     Show all 10 Subjects
Abstract:
... RIN4 is an intensively studied immune regulator in Arabidopsis and is involved in perception of microbial features outside and bacterial effectors inside plant cells. Furthermore, RIN4 is conserved in land plants and is targeted for posttranslational modifications by several virulence proteins from the bacterial pathogen Pseudomonas syringae. Despite the important roles of RIN4 in plant immune res ...
DOI:
10.1094/MPMI-07-18-0212-FI

5. A Bacterial Effector Mimics a Host HSP90 Client to Undermine Immunity

Author:
Lopez, Victor A.; Park, Brenden C.; Nowak, Dominika; Sreelatha, Anju; Zembek, Patrycja; Fernandez, Jessie; Servage, Kelly A.; Gradowski, Marcin; Hennig, Jacek; Tomchick, Diana R.; Pawłowski, Krzysztof; Krzymowska, Magdalena; Tagliabracci, Vincent S.
Source:
Cell 2019 v.179 no.1 pp. 205-218.e21
ISSN:
0092-8674
Subject:
Pseudomonas syringae,   etc   ; adenosinetriphosphatase; disease severity; enzyme activity; hypersensitive response; immunity; immunologic receptors; molecular chaperones; pathogens; phosphorylation; protein kinases;     Show all 11 Subjects
Abstract:
... The molecular chaperone HSP90 facilitates the folding of several client proteins, including innate immune receptors and protein kinases. HSP90 is an essential component of plant and animal immunity, yet pathogenic strategies that directly target the chaperone have not been described. Here, we identify the HopBF1 family of bacterial effectors as eukaryotic-specific HSP90 protein kinases. HopBF1 ado ...
DOI:
10.1016/j.cell.2019.08.020

6. Ammonium mediated changes in carbon and nitrogen metabolisms induce resistance against Pseudomonas syringae in tomato plants

Author:
González-Hernández, Ana Isabel; Fernández-Crespo, Emma; Scalschi, Loredana; Hajirezaei, Mohammad-Reza; von Wirén, Nicolaus; García-Agustín, Pilar; Camañes, Gemma
Source:
Journal of plant physiology 2019 v.239 pp. 28-37
ISSN:
0176-1617
Subject:
Pseudomonas syringae,   etc   ; acclimation; ammonium; carbon; leaves; manganese; nitrogen metabolism; nutrient balance; putrescine; roots; superoxide dismutase; tissues; tomatoes; toxicity; zinc;     Show all 15 Subjects
Abstract:
... Predominant NH4+ nutrition causes an “ammonium syndrome” that induces metabolic changes and thereby provides resistance against Pseudomonas syringae infection through the activation of systemic acquired acclimation (SAA). Hence, to elucidate the mechanisms underlying NH4+-mediated SAA, the changes in nutrient balance and C and N skeletons were studied in NH4+-treated plants upon infection by P. sy ...
DOI:
10.1016/j.jplph.2019.05.009

7. Two Arabidopsis Receptor-like Cytoplasmic Kinases SZE1 and SZE2 Associate with the ZAR1–ZED1 Complex and Are Required for Effector-Triggered Immunity

Author:
Liu, Cheng; Cui, Dayong; Zhao, Jingbo; Liu, Na; Wang, Bo; Liu, Jing; Xu, Enjun; Hu, Zhubing; Ren, Dongtao; Tang, Dingzhong; Hu, Yuxin
Source:
Molecular plant 2019 v.12 no.7 pp. 967-983
ISSN:
1674-2052
Subject:
Pseudomonas syringae pv. tomato,   etc   ; Arabidopsis; autoimmunity; mutants; myristoylation; pathogens; phosphotransferases (kinases); plasma membrane; protein phosphorylation; receptors; tomatoes;     Show all 11 Subjects
Abstract:
... Plants utilize intracellular nucleotide-binding leucine-rich repeat domain-containing receptors (NLRs) to recognize pathogen effectors and induce a robust defense response named effector-triggered immunity (ETI). The Arabidopsis NLR protein HOPZ-ACTIVATED RESISTANCE 1 (ZAR1) forms a precomplex with HOPZ-ETI-DEFICIENT 1 (ZED1), a receptor-like cytoplasmic kinase (RLCK) XII-2 subfamily member, to re ...
DOI:
10.1016/j.molp.2019.03.012

8. A complete genome sequence for Pseudomonas syringae pv. pisi PP1 highlights the importance of multiple modes of horizontal gene transfer during phytopathogen evolution

Author:
Baltrus, David A.; Clark, Meara
Source:
Molecular plant pathology 2019 v.20 no.7 pp. 1013-1018
ISSN:
1464-6722
Subject:
Pseudomonas syringae pv. pisi,   etc   ; chromosomes; genome; genomics; horizontal gene transfer; nanopores; nucleotide sequences; phylogeny; plant pathogens; plasmids; virulence;     Show all 11 Subjects
Abstract:
... Hybrid assembly strategies that combine long‐read sequencing reads from Oxford Nanopore's MinION device combined with high‐depth Illumina paired‐end reads have enabled completion and circularization of both plasmids and chromosomes from multiple bacterial strains. Here we demonstrate the utility of supplementing Illumina paired‐end reads from a previously published draft genome of P. syringae pv. ...
DOI:
10.1111/mpp.12806

9. Plant growth‐promoting archaea trigger induced systemic resistance in Arabidopsis thaliana against Pectobacterium carotovorum and Pseudomonas syringae

Author:
Song, Geun Cheol; Im, Hyunjoo; Jung, Jihye; Lee, Soohyun; Jung, Man‐Young; Rhee, Sung‐Keun; Ryu, Choong‐Min
Source:
Environmental microbiology 2019 v.21 no.3 pp. 940-948
ISSN:
1462-2912
Subject:
Pseudomonas syringae pv. tomato,   etc   ; Arabidopsis thaliana; Archaea; Pectobacterium carotovorum subsp. carotovorum; bacteria; emissions; eukaryotic cells; plant growth; signal transduction; soil;     Show all 10 Subjects
Abstract:
... Archaea have inhabited the earth for a long period of time and are ubiquitously distributed in diverse environments. However, few studies have focused on the interactions of archaea with other organisms, including eukaryotes such as plants, since it is difficult to cultivate sufficient numbers of archaeal cells for analysis. In this study, we investigated the interaction between soil archaea and A ...
DOI:
10.1111/1462-2920.14486

10. Underground Azelaic Acid–Conferred Resistance to Pseudomonas syringae in Arabidopsis

Author:
Cecchini, Nicolás M.; Roychoudhry, Suruchi; Speed, DeQuantarius J.; Steffes, Kevin; Tambe, Arjun; Zodrow, Kristin; Konstantinoff, Katerina; Jung, Ho Won; Engle, Nancy L.; Tschaplinski, Timothy J.; Greenberg, Jean T.
Source:
Molecular plant-microbe interactions 2019 v.32 no.1 pp. 86-94
ISSN:
0894-0282
Subject:
Pseudomonas syringae,   etc   ; Arabidopsis; disease resistance; immunity; leaves; microorganisms; oxylipins; phosphotransferases (kinases); plant organs; plastids; proteins; root growth; roots; tissues;     Show all 14 Subjects
Abstract:
... Local interactions between individual plant organs and diverse microorganisms can lead to whole plant immunity via the mobilization of defense signals. One such signal is the plastid lipid-derived oxylipin azelaic acid (AZA). Arabidopsis lacking AZI1 or EARLI1, related lipid transfer family proteins, exhibit reduced AZA transport among leaves and cannot mount systemic immunity. AZA has been detect ...
DOI:
10.1094/MPMI-07-18-0185-R

11. Comparative genomic analysis of Pseudomonas amygdali pv. lachrymans NM002: Insights into its potential virulence genes and putative invasion determinants

Author:
Li, Lei; Yuan, Lifang; Shi, Yanxia; Xie, Xuewen; Chai, Ali; Wang, Qi; Li, Baoju
Source:
Genomics 2019 v.111 no.6 pp. 1493-1503
ISSN:
0888-7543
Subject:
Pseudomonas syringae,   etc   ; Cucumis sativus; Pseudomonas amygdali; chemotaxis; cucumbers; flagellum; genes; genomics; leaf spot; lipopolysaccharides; pathogenesis; pathovars; phaseolotoxin; phyllosphere; plant pathogenic bacteria; quorum sensing; virulence;     Show all 17 Subjects
Abstract:
... Pseudomonas amygdali pv. lachrymans is currently of important plant pathogenic bacteria that causes cucumber angular leaf spot worldwide. The pathogen has been studied for its roles in pathogenicity and plant inheritance resistance. To further delineate traits critical to virulence, invasion and survival in the phyllosphere, we reported the first complete genome of P. amygdali pv. lachrymans NM002 ...
DOI:
10.1016/j.ygeno.2018.10.004

12. Multispectral radiometric monitoring of bacterial blight of coffee

Author:
Marin, Diego Bedin; de Carvalho Alves, Marcelo; Pozza, Edson Ampélio; Belan, Leônidas Leoni; de Oliveira Freitas, Marcelo Loran
Source:
Precision agriculture 2019 v.20 no.5 pp. 959-982
ISSN:
1385-2256
Subject:
Pseudomonas syringae,   etc   ; Coffea arabica; Landsat; blight; crops; disease incidence; disease severity; image analysis; leaves; monitoring; multispectral imagery; radiometry; remote sensing; temperature; time series analysis; vegetation index; Brazil;     Show all 17 Subjects
Abstract:
... Bacterial blight of coffee caused by Pseudomonas syringae pv. garcae shows great destructive potential in the main coffee producing regions in Brazil and worldwide. Remote sensing technologies can be used as an inexpensive and effective method to identify and monitor the disease. This study evaluated the potential of the Landsat 8 OLI/TIRS multispectral sensor for the spatial and temporal monitori ...
DOI:
10.1007/s11119-018-09623-9

13. Folate Metabolism Interferes with Plant Immunity through 1C Methionine Synthase-Directed Genome-wide DNA Methylation Enhancement

Author:
González, Beatriz; Vera, Pablo
Source:
Molecular plant 2019 v.12 no.9 pp. 1227-1242
ISSN:
1674-2052
Subject:
Pseudomonas syringae,   etc   ; Arabidopsis; DNA methylation; biochemical pathways; folic acid; gene overexpression; genome; immunity; methionine; methionine synthase; mutants; proteomics; salicylic acid; vitamin metabolism;     Show all 14 Subjects
Abstract:
... Plants rely on primary metabolism for flexible adaptation to environmental changes. Here, through a combination of chemical genetics and forward genetic studies in Arabidopsis plants, we identified that the essential folate metabolic pathway exerts a salicylic acid-independent negative control on plant immunity. Disruption of the folate pathway promotes enhanced resistance to Pseudomonas syringae ...
DOI:
10.1016/j.molp.2019.04.013

14. Bacteria from four phylogroups of the Pseudomonas syringae complex can cause bacterial canker of apricot

Author:
Parisi, L.; Morgaint, B.; Blanco‐Garcia, J.; Guilbaud, C.; Chandeysson, C.; Bourgeay, J. F.; Moronvalle, A.; Brun, L.; Brachet, M. L.; Morris, C. E.
Source:
Plant pathology 2019 v.68 no.7 pp. 1249-1258
ISSN:
0032-0862
Subject:
Pseudomonas syringae,   etc   ; Pseudomonas viridiflava; apricots; bacterial canker; cherries; cold; fruit trees; fruits; hazelnuts; hypersensitive response; ice nucleation; kiwifruit; nut trees; orchards; pathogenicity; plant pathogenic bacteria; soil; tobacco; winter;     Show all 19 Subjects
Abstract:
... Pseudomonas syringae is described as a species complex, containing P. syringae‐related species classified into 13 phylogroups and 23 clades. Pseudomonas syringae is one of the main pathogens of fruit trees, affecting nut trees, hazelnut and kiwi, pome and stone fruits. Bacterial canker of apricots is an important disease in regions of production with cold winters and conducive soils. This work cha ...
DOI:
10.1111/ppa.13051

15. First Report of Pseudomonas Grapevine Bunch Rot Caused by Pseudomonas syringae pv. syringae

Author:
Gerin, D.; Cariddi, C.; de Miccolis Angelini, R.M.; Rotolo, C.; Dongiovanni, C.; Faretra, F.; Pollastro, S.
Source:
Plant disease 2019 v.103 no.8 pp. 1954-1960
ISSN:
0191-2917
Subject:
Pseudomonas syringae pv. syringae,   etc   ; Vitis; antimicrobial properties; bacteria; bacterial canker; blades; cultivars; financial economics; genes; grapes; hosts; pathogenicity; petioles; ribosomal DNA; shoots; summer; vineyards; Australia; Italy;     Show all 19 Subjects
Abstract:
... Pseudomonas syringae pv. syringae, a Gammaproteobacterium belonging to genomospecies 2 within the P. syringae complex, is distributed worldwide, and it is responsible for bacterial canker on >100 different hosts, including the grapevine. P. syringae pv. syringae induces necrotic lesions in the leaf blades, veins, petioles, shoots, rachis, and tendrils on grapevine cultivars in different areas. P. ...
DOI:
10.1094/PDIS-11-18-1992-RE

16. The colonization processes of Myrtus communis by strains of Pseudomonas savastanoi with a differential ability to produce phytohormones

Author:
Schiff, S.; Tani, C.; Cimmino, A.; Mandalà, G.; Cinelli, T.; Evidente, A.; Fiori, M.; Surico, G.; Marchi, G.
Source:
Plant pathology 2019 v.68 no.6 pp. 1109-1119
ISSN:
0032-0862
Subject:
Pseudomonas syringae pv. savastanoi,   etc   ; Myrtus communis; cell walls; cytokinins; histology; host-pathogen relationships; indole acetic acid; intercellular spaces; olives; pathogenicity; plant pathogenic bacteria; xylem vessels; Italy; Sardinia;     Show all 14 Subjects
Abstract:
... The ability to produce indole‐3‐acetic acid (IAA) through the indole‐3‐acetamide (IAM) pathway as well as cytokinins is a common trait of Pseudomonas savastanoi populations causing disease on oleander and olive. These phytohormones are required for the induction and development of an outgrowth of plant cell tissue termed a knot. However, in myrtle orchards of Sardinia (Italy), strains of P. savast ...
DOI:
10.1111/ppa.13021

17. The Ptr1 Locus of Solanum lycopersicoides Confers Resistance to Race 1 Strains of Pseudomonas syringae pv. tomato and to Ralstonia pseudosolanacearum by Recognizing the Type III Effectors AvrRpt2 and RipBN

Author:
Mazo-Molina, Carolina; Mainiero, Samantha; Hind, Sarah R.; Kraus, Christine M.; Vachev, Mishi; Maviane-Macia, Felicia; Lindeberg, Magdalen; Saha, Surya; Strickler, Susan R.; Feder, Ari; Giovannoni, James J.; Smart, Christine D.; Peeters, Nemo; Martin, Gregory B.
Source:
Molecular plant-microbe interactions 2019 v.32 no.8 pp. 949-960
ISSN:
0894-0282
Subject:
Pseudomonas syringae pv. tomato,   etc   ; Arabidopsis; Ralstonia; Solanum lycopersicoides; bacteria; convergent evolution; genetic resistance; immunity; inheritance (genetics); loci; nucleotide sequences; proteolysis; site-directed mutagenesis; tomato bacterial speck; tomatoes;     Show all 15 Subjects
Abstract:
... Race 1 strains of Pseudomonas syringae pv. tomato, which cause bacterial speck disease of tomato, are becoming increasingly common and no simply inherited genetic resistance to such strains is known. We discovered that a locus in Solanum lycopersicoides, termed Pseudomonas tomato race 1 (Ptr1), confers resistance to race 1 P. syringae pv. tomato strains by detecting the activity of type III effect ...
DOI:
10.1094/MPMI-01-19-0018-R

18. Microbial diversity of individual raindrops collected from simulated and natural precipitation events

Author:
Garcia, Ellen B.; Hanlon, Regina; Makris, Melissa R.; Powers, Craig W.; Jimenez-Sanchez, Celia; Karatum, Osman; Marr, Linsey C.; Sands, David C.; Schmale, David G.
Source:
Atmospheric environment 2019 v.209 pp. 102-111
ISSN:
1352-2310
Subject:
Pseudomonas syringae,   etc   ; Cladosporium; Fusarium avenaceum; Penicillium; Trichoderma; atmospheric chemistry; bacteria; droplets; field experimentation; flow cytometry; fungi; ice nucleation; laboratory experimentation; nitrogen; particle size; rain; rainfall simulation; viability;     Show all 18 Subjects
Abstract:
... Precipitation samples collected at or near the surface of the earth are composite samples of many different raindrops. Little is known about the abiotic and biotic components found within individual raindrops. To help fill this knowledge gap, we designed a system for collecting individual raindrops called the Liquid Nitrogen Apparatus for Isolating Raindrops (LNAIR). The LNAIR was used in a series ...
DOI:
10.1016/j.atmosenv.2019.04.023

19. Natural variation for unusual host responses and flagellin‐mediated immunity against Pseudomonas syringae in genetically diverse tomato accessions

Author:
Roberts, Robyn; Mainiero, Samantha; Powell, Adrian F.; Liu, Alexander E.; Shi, Kai; Hind, Sarah R.; Strickler, Susan R.; Collmer, Alan; Martin, Gregory B.
Source:
Thenew phytologist 2019 v.223 no.1 pp. 447-461
ISSN:
0028-646X
Subject:
Pseudomonas syringae pv. tomato,   etc   ; Solanum lycopersicum; flagellin; immune system; immunity; models; nucleotide sequences; peptides; reactive oxygen species; reporter genes; stem galls; tomatoes;     Show all 12 Subjects
Abstract:
... The interaction between tomato and Pseudomonas syringae pv tomato (Pst) is a well‐developed model for investigating the molecular basis of the plant immune system. There is extensive natural variation in Solanum lycopersicum (tomato) but it has not been fully leveraged to enhance our understanding of the tomato–Pst pathosystem. We screened 216 genetically diverse accessions of cultivated tomato an ...
DOI:
10.1111/nph.15788

20. Temporary heat stress suppresses PAMP‐triggered immunity and resistance to bacteria in Arabidopsis thaliana

Author:
Janda, Martin; Lamparová, Lucie; Zubíková, Alžběta; Burketová, Lenka; Martinec, Jan; Krčková, Zuzana
Source:
Molecular plant pathology 2019 v.20 no.7 pp. 1005-1012
ISSN:
1464-6722
Subject:
Pseudomonas syringae,   etc   ; Arabidopsis thaliana; amino acids; bacteria; biotic stress; flagellin; heat stress; immunity; pathogen-associated molecular patterns; peptides; plasma membrane; reactive oxygen species; stress response; temperature;     Show all 14 Subjects
Abstract:
... Recognition of pathogen‐associated molecular patterns (PAMPs) is crucial for plant defence against pathogen attack. The best characterized PAMP is flg22, a 22 amino acid conserved peptide from flagellin protein. In Arabidopsis thaliana, flg22 is recognized by the flagellin sensing 2 (FLS2) receptor. In this study, we focused on biotic stress responses triggered by flg22 after exposure to temporary ...
DOI:
10.1111/mpp.12799