keyword
MENU ▼
Read by QxMD icon Read
search

phytophthora

keyword
https://www.readbyqxmd.com/read/28092749/public-value-at-risk-from-phytophthora-ramorum-and-phytophthora-kernoviae-spread-in-england-and-wales
#1
Ben Drake, Glyn Jones
Heritage gardens, heathland and woodland are increasingly under threat from the non-native tree and plant diseases Phytophthora ramorum and Phytophthora kernoviae. However, there exist only limited literature that estimates the public non-market value that may be lost from a continued spread of Phytophthora ramorum and Phytophthora kernoviae into these habitats. This paper therefore uses a contingent valuation survey to assess the non-extractive public use and non-use values at risk from an uncontrolled spread of these diseases in England and Wales...
January 13, 2017: Journal of Environmental Management
https://www.readbyqxmd.com/read/28089043/contrasting-microsatellite-diversity-in-the-evolutionary-lineages-of-phytophthora-lateralis
#2
AnnaMaria Vettraino, Clive M Brasier, Joan F Webber, Everett M Hansen, Sarah Green, Cecile Robin, Alessia Tomassini, Natalia Bruni, Andrea Vannini
Following recent discovery of Phytophthora lateralis on native Chamaecyparis obtusa in Taiwan, four phenotypically distinct lineages were discriminated: the Taiwan J (TWJ) and Taiwan K (TWK) in Taiwan, the Pacific Northwest (PNW) in North America and Europe and the UK in west Scotland. Across the four lineages, we analysed 88 isolates from multiple sites for microsatellite diversity. Twenty-one multilocus genotypes (MLGs) were resolved with high levels of diversity of the TWK and PNW lineages. No alleles were shared between the PNW and the Taiwanese lineages...
February 2017: Fungal Biology
https://www.readbyqxmd.com/read/28087616/pathways-to-false-positive-diagnoses-using-molecular-genetic-detection-methods-phytophthora-cinnamomi-a-case-study
#3
Manisha Kunadiya, Diane White, William A Dunstan, Giles E St, J Hardy, Vera Andjic, Treena I Burgess
Phytophthora cinnamomi is one of the world's most invasive plant pathogens affecting ornamental plants, horticultural crops and natural ecosystems. Accurate diagnosis is very important to determine the presence or absence of this pathogen in diseased and asymptomatic plants. In previous studies, P. cinnamomi species-specific primers were designed and tested using various polymerase chain reaction (PCR) techniques including conventional PCR, nested PCR, and quantitative real time PCR (qPCR). In all cases, the primers were stated to be highly specific and sensitive to P...
January 12, 2017: FEMS Microbiology Letters
https://www.readbyqxmd.com/read/28081566/a-novel-phytophthora-sojae-resistance-rps12-gene-mapped-to-a-genomic-region-that-contains-several-rps-genes
#4
Dipak K Sahoo, Nilwala S Abeysekara, Silvia R Cianzio, Alison E Robertson, Madan K Bhattacharyya
Phytophthora sojae Kaufmann and Gerdemann, which causes Phytophthora root rot, is a widespread pathogen that limits soybean production worldwide. Development of Phytophthora resistant cultivars carrying Phytophthora resistance Rps genes is a cost-effective approach in controlling this disease. For this mapping study of a novel Rps gene, 290 recombinant inbred lines (RILs) (F7 families) were developed by crossing the P. sojae resistant cultivar PI399036 with the P. sojae susceptible AR2 line, and were phenotyped for responses to a mixture of three P...
2017: PloS One
https://www.readbyqxmd.com/read/28080985/emerging-oomycete-threats-to-plants-and-animals
#5
REVIEW
Lida Derevnina, Benjamin Petre, Ronny Kellner, Yasin F Dagdas, Mohammad Nasif Sarowar, Artemis Giannakopoulou, Juan Carlos De la Concepcion, Angela Chaparro-Garcia, Helen G Pennington, Pieter van West, Sophien Kamoun
Oomycetes, or water moulds, are fungal-like organisms phylogenetically related to algae. They cause devastating diseases in both plants and animals. Here, we describe seven oomycete species that are emerging or re-emerging threats to agriculture, horticulture, aquaculture and natural ecosystems. They include the plant pathogens Phytophthora infestans, Phytophthora palmivora, Phytophthora ramorum, Plasmopara obducens, and the animal pathogens Aphanomyces invadans, Saprolegnia parasitica and Halioticida noduliformans For each species, we describe its pathology, importance and impact, discuss why it is an emerging threat and briefly review current research activities...
December 5, 2016: Philosophical Transactions of the Royal Society of London. Series B, Biological Sciences
https://www.readbyqxmd.com/read/28063921/tricalcium-phosphate-solubilization-and-nitrogen-fixation-by-newly-isolated-aneurinibacillus-aneurinilyticus-ckmv1-from-rhizosphere-of-valeriana-jatamansi-and-its-growth-promotional-effect
#6
Anjali Chauhan, Shiwani Guleria, Praveen P Balgir, Abhishek Walia, Rishi Mahajan, Preeti Mehta, Chand Karan Shirkot
Aneurinibacillus aneurinilyticus strain CKMV1 was isolated from rhizosphere of Valeriana jatamansi and possessed multiple plant growth promoting traits like production of phosphate solubilization (260mg/L), nitrogen fixation (202.91nmolethylenemL(-1)h(-1)), indole-3-acetic acid (IAA) (8.1μg/mL), siderophores (61.60%), HCN (hydrogen cyanide) production and antifungal activity. We investigated the ability of isolate CKMV1 to solubilize insoluble P via mechanism of organic acid production. High-performance liquid chromatography (HPLC) study showed that isolate CKMV1 produced mainly gluconic (1...
December 24, 2016: Brazilian Journal of Microbiology: [publication of the Brazilian Society for Microbiology]
https://www.readbyqxmd.com/read/28056387/mamp-microbe-associated-molecular-pattern-induced-changes-in-plasma-membrane-associated-proteins
#7
Hana Uhlíková, Martin Solanský, Vendula Hrdinová, Ondrej Šedo, Tomáš Kašparovský, Jan Hejátko, Jan Lochman
Plant plasma membrane associated proteins play significant roles in Microbe-Associated Molecular Pattern (MAMP) mediated defence responses including signal transduction, membrane transport or energetic metabolism. To elucidate the dynamics of proteins associated with plasma membrane in response to cryptogein, a well-known MAMP of defence reaction secreted by the oomycete Phytophthora cryptogea, 2D-Blue Native/SDS gel electrophoresis of plasma membrane fractions was employed. This approach revealed 21 up- or down-regulated protein spots of which 15 were successfully identified as proteins related to transport through plasma membrane, vesicle trafficking, and metabolic enzymes including cytosolic NADP-malic enzyme and glutamine synthetase...
December 14, 2016: Journal of Plant Physiology
https://www.readbyqxmd.com/read/28052487/the-coexistence-of-generalist-and-specialist-clonal-lineages-in-natural-populations-of-the-irish-famine-pathogen-phytophthora-infestans-explains-local-adaptation-to-potato-and-tomato
#8
Alexander Kröner, Romain Mabon, Roselyne Corbière, Josselin Montarry, Didier Andrivon
Phytophthora infestans, causing late blight on Solanaceae, is a serious threat to potato and tomato crops worldwide. P. infestans populations sampled on either potato or tomato differ in genotypes and pathogenicity, suggesting niche exclusion in the field. We hypothesized that such niche separation can reflect differential host exploitation by different P. infestans genotypes. We thus compared genotypes and phenotypes in 21 isolates sampled on potato (n = 11) or tomato (n = 10). Typing at 12 microsatellite loci assigned potato isolates to the 13_A2, 6_A1 and 1_A1 lineages, and tomato isolates to the 23_A1, 2_A1 and unclassified multi-locus genotypes...
January 4, 2017: Molecular Ecology
https://www.readbyqxmd.com/read/28035737/high-levels-of-diversity-and-population-structure-in-the-potato-late-blight-pathogen-at-the-mexico-center-of-origin
#9
Jianan Wang, Sylvia P Fernândez-Pavía, Meredith M Larsen, Edith Garay-Serrano, Rosario Gregorio-Cipriano, Gerardo Rodríguez-Alvarado, Niklaus J Grünwald, Erica M Goss
Globally destructive crop pathogens often emerge by migrating out of their native ranges. These pathogens are often diverse at their center of origin, and may exhibit adaptive variation in the invaded range via multiple introductions from different source populations. However, source populations are generally unidentified or poorly studied compared to invasive populations. Phytophthora infestans, the causal agent of late blight, is one of the most costly pathogens of potato and tomato worldwide. Mexico is the center of origin and diversity of P...
December 30, 2016: Molecular Ecology
https://www.readbyqxmd.com/read/28030580/historic-late-blight-outbreaks-caused-by-a-widespread-dominant-lineage-of-phytophthora-infestans-mont-de-bary
#10
Amanda C Saville, Michael D Martin, Jean B Ristaino
Phytophthora infestans (Mont.) de Bary, the causal agent of potato late blight, was responsible for the Irish potato famine of the 1840s. Initial disease outbreaks occurred in the US in 1843, two years prior to European outbreaks. We examined the evolutionary relationships and source of the 19th-century outbreaks using herbarium specimens of P. infestans from historic (1846-1970) and more recent isolates (1992-2014) of the pathogen. The same unique SSR multilocus genotype, named here as FAM-1, caused widespread outbreaks in both US and Europe...
2016: PloS One
https://www.readbyqxmd.com/read/28028594/major-phytopathogens-and-strains-from-cocoa-theobroma-cacao-l-are-differentiated-by-maldi-ms-lipid-and-or-peptide-protein-profiles
#11
Fábio Neves Dos Santos, Alessandra Tata, Kátia Roberta Anacleto Belaz, Dilze Maria Argôlo Magalhães, Edna Dora Martins Newman Luz, Marcos Nogueira Eberlin
Phytopathogens are the main disease agents that promote attack of cocoa plantations in all tropical countries. The similarity of the symptoms caused by different phytopathogens makes the reliable identification of the diverse species a challenge. Correct identification is important in the monitoring and management of these pests. Here we show that matrix-assisted laser desorption ionization mass spectrometry (MALDI-MS) in combination with multivariate data analysis is able to rapidly and reliably differentiate cocoa phytopathogens, namely Moniliophthora perniciosa, Phytophthora palmivora, P...
December 27, 2016: Analytical and Bioanalytical Chemistry
https://www.readbyqxmd.com/read/28018392/narrow-leafed-lupin-lupinus-angustifolius-%C3%AE-1-and-%C3%AE-6-conglutin-proteins-exhibit-antifungal-activity-protecting-plants-against-necrotrophic-pathogen-induced-damage-from-sclerotinia-sclerotiorum-and-phytophthora-nicotianae
#12
Jose C Jimenez-Lopez, Su Melser, Kathleen DeBoer, Louise F Thatcher, Lars G Kamphuis, Rhonda C Foley, Karam B Singh
Vicilins (7S globulins) are seed storage proteins and constitute the main protein family in legume seeds, particularly in narrow-leafed lupin (Lupinus angustifolius L.; NLL), where seven vicilin genes, called β1- to β7-conglutin have been identified. Vicilins are involved in germination processes supplying amino acids for seedling growth and plant development, as well as in some cases roles in plant defense and protection against pathogens. The roles of NLL β-conglutins in plant defense are unknown. Here the potential role of five NLL β-conglutin family members in protection against necrotrophic fungal pathogens was investigated and it was demonstrated that recombinant purified 6xHis-tagged β1- and β6-conglutin proteins exhibited the strongest in vitro growth inhibitory activity against a range of necrotrophic fungal pathogens compared to β2, β3, and β4 conglutins...
2016: Frontiers in Plant Science
https://www.readbyqxmd.com/read/27968994/knocking-down-expression-of-the-auxin-amidohydrolase-iar3-alters-defense-responses-in-solanaceae-family-plants
#13
Sebastian D'Ippolito, Radomira Vankova, Matthieu H A J Joosten, Claudia A Casalongué, Diego F Fiol
In plants, indole-3-acetic acid (IAA) amido hydrolases (AHs) participate in auxin homeostasis by releasing free IAA from IAA-amino acid conjugates. We investigated the role of IAR3, a member of the IAA amido hydrolase family, in the response of Solanaceous plants challenged by biotrophic and hemi-biotrophic pathogens. By means of genome inspection and phylogenic analysis we firstly identified IAA-AH sequences and putative IAR3 orthologs in Nicotiana benthamiana, tomato and potato. We evaluated the involvement of IAR3 genes in defense responses by using virus-induced gene silencing...
December 2016: Plant Science: An International Journal of Experimental Plant Biology
https://www.readbyqxmd.com/read/27957885/changing-ploidy-as-a-strategy-the-irish-potato-famine-pathogen-shifts-ploidy-in-relation-to-its-sexuality
#14
Ying Li, He Shen, Qian Zhou, Kun Qian, Theo van der Lee, Sanwen Huang
The oomycete Phytophthora infestans was the causal agent of the Irish Great Famine and is a recurring threat to global food security. The pathogen can reproduce both sexually and asexually, with high potential to adapt to various environments and great risk to break disease resistance genes in potato. As other oomycetes, P. infestans is regarded to be diploid during the vegetative phase of its life cycle, although some studies reported trisomy, and polyploidy. Using microsatellite fingerprinting, genome-wide assessment of SNP polymorphism, nuclear DNA quantification, and microscopic counting of chromosome numbers we assessed the ploidy level of isolates...
December 13, 2016: Molecular Plant-microbe Interactions: MPMI
https://www.readbyqxmd.com/read/27936244/gene-expression-and-silencing-studies-in-phytophthora-infestans-reveal-infection-specific-nutrient-transporters-and-a-role-for-the-nitrate-reductase-pathway-in-plant-pathogenesis
#15
Melania Abrahamian, Audrey M V Ah-Fong, Carol Davis, Kalina Andreeva, Howard S Judelson
To help learn how phytopathogens feed from their hosts, genes for nutrient transporters from the hemibiotrophic potato and tomato pest Phytophthora infestans were annotated. This identified 453 genes from 19 families. Comparisons with a necrotrophic oomycete, Pythium ultimum var. ultimum, and a hemibiotrophic fungus, Magnaporthe oryzae, revealed diversity in the size of some families although a similar fraction of genes encoded transporters. RNA-seq of infected potato tubers, tomato leaves, and several artificial media revealed that 56 and 207 transporters from P...
December 2016: PLoS Pathogens
https://www.readbyqxmd.com/read/27924129/interplay-of-genes-in-plant-pathogen-interactions-in-planta-expression-and-docking-studies-of-a-beta-1-3-glucanase-gene-from-piper-colubrinum-and-a-glucanase-inhibitor-gene-from-phytophthora-capsici
#16
K Johnson George, O Rosana Babu, I P Vijesh Kumar, J Santhosh Eapen, M Anandaraj
Oomycete pathogen, Phytophthora capsici is devastating for black pepper (Piper nigrum L.) and causes foot rot disease at all stages of plant growth. Phytophthora secretes a glucanase inhibitor protein (GIP), which is capable of inhibiting defence proteins like endoglucanases. In this particular study Quantitative PCR analysis, molecular docking studies and analysis of sequences of Glucanase inhibitor protein and beta-1,3 glucanse genes were done mainly depending on the data derived from Phytophthora capsici whole genome sequencing and Piper colubrinum RNA-sequencing (RNA-Seq)...
October 2016: Physiology and Molecular Biology of Plants: An International Journal of Functional Plant Biology
https://www.readbyqxmd.com/read/27917156/inhibitory-effects-of-macrotetrolides-from-streptomyces-spp-on-zoosporogenesis-and-motility-of-peronosporomycete-zoospores-are-likely-linked-with-enhanced-atpase-activity-in-mitochondria
#17
Md Tofazzal Islam, Hartmut Laatsch, Andreas von Tiedemann
The release of zoospores from sporangia and motility of the released zoospores are critical in the disease cycle of the Peronosporomycetes that cause devastating diseases in plants, fishes, animals and humans. Disruption of any of these asexual life stages eliminates the possibility of pathogenesis. In the course of screening novel bioactive secondary metabolites, we found that extracts of some strains of marine Streptomyces spp. rapidly impaired motility and caused subsequent lysis of zoospores of the grapevine downy mildew pathogen Plasmopara viticola at 10 μg/ml...
2016: Frontiers in Microbiology
https://www.readbyqxmd.com/read/27905931/a-temporal-assessment-of-nematode-community-structure-and-diversity-in-the-rhizosphere-of-cisgenic-phytophthora-infestans-resistant-potatoes
#18
Vilma Ortiz, Sinead Phelan, Ewen Mullins
BACKGROUND: Nematodes play a key role in soil processes with alterations in the nematode community structure having the potential to considerably influence ecosystem functioning. As a result fluctuations in nematode diversity and/or community structure can be gauged as a 'barometer' of a soil's functional biodiversity. However, a deficit exists in regards to baseline knowledge and on the impact of specific GM crops on soil nematode populations and in particular in regard to the impact of GM potatoes on the diversity of nematode populations in the rhizosphere...
December 1, 2016: BMC Ecology
https://www.readbyqxmd.com/read/27852223/diversity-evolution-and-expression-profiles-of-histone-acetyltransferases-and-deacetylases-in-oomycetes
#19
Xiao-Wen Wang, Li-Yun Guo, Miao Han, Kun Shan
BACKGROUND: Oomycetes are a group of fungus-like eukaryotes with diverse microorganisms living in marine, freshwater and terrestrial environments. Many of them are important pathogens of plants and animals, causing severe economic losses. Based on previous study, gene expression in eukaryotic cells is regulated by epigenetic mechanisms such as DNA methylation and histone modification. However, little is known about epigenetic mechanisms of oomycetes. RESULTS: In this study, we investigated the candidate genes in regulating histone acetylation in oomycetes genomes through bioinformatics approaches and identified a group of diverse histone acetyltransferases (HATs) and histone deacetylases (HDACs), along with three putative novel HATs...
November 16, 2016: BMC Genomics
https://www.readbyqxmd.com/read/27827009/phenazine-1-carboxylic-acid-production-by-pseudomonas-fluorescens-lbum636-alters-phytophthora-infestans-growth-and-late-blight-development
#20
Christopher K Morrison, Tanya Arseneault, Amy Novinscak, Martin Filion
Phytophthora infestans causes late blight of potato, one of the most devastating diseases affecting potato production. Alternative approaches for controlling late blight are being increasingly sought due to increasing environmental concerns over the use of chemical pesticides and the increasing resistance of P. infestans to fungicides. Our research group has isolated a new strain of Pseudomonas fluorescens (LBUM636) of biocontrol interest producing the antibiotic phenazine-1-carboxylic acid (PCA). Wild-type LBUM636 was shown to significantly inhibit the growth of Phytophthora infestans in in vitro confrontational assays whereas its isogenic mutant (phzC-; not producing PCA) only slightly altered the pathogen's growth...
December 30, 2016: Phytopathology
keyword
keyword
37240
1
2
Fetch more papers »
Fetching more papers... Fetching...
Read by QxMD. Sign in or create an account to discover new knowledge that matter to you.
Remove bar
Read by QxMD icon Read
×

Search Tips

Use Boolean operators: AND/OR

diabetic AND foot
diabetes OR diabetic

Exclude a word using the 'minus' sign

Virchow -triad

Use Parentheses

water AND (cup OR glass)

Add an asterisk (*) at end of a word to include word stems

Neuro* will search for Neurology, Neuroscientist, Neurological, and so on

Use quotes to search for an exact phrase

"primary prevention of cancer"
(heart or cardiac or cardio*) AND arrest -"American Heart Association"