keyword
MENU ▼
Read by QxMD icon Read
search

Late blight

keyword
https://www.readbyqxmd.com/read/27905931/a-temporal-assessment-of-nematode-community-structure-and-diversity-in-the-rhizosphere-of-cisgenic-phytophthora-infestans-resistant-potatoes
#1
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/27878481/field-investigations-of-dissipations-and-residues-of-cyazofamid-in-soil-and-tomato-risk-assessment-of-human-exposure-to-cyazofamid-via-tomato-intake
#2
Zhenlan Xu, Changpeng Zhang, Jianzhong Yu, Chunrong Zhang, Min Wu, Hongmei He, Yahong Zhu, Fangyuan Lou, Yuanyuan Wu, Yanhua Wang, Liezhong Chen, Hua Zhao, Qiang Wang, Leiming Cai
Cyazofamid, as a fungicide of the novel cyanoimidazole chemical class, has been widely used to control tomato late blight. Understanding of cyazofamid residues in environment and crops is an essential prerequisite for its risk assessment. In this study, field investigations in four typical tomato-producing areas were conducted to explore the dissipation kinetics and residues of cyazofamid and its primary metabolite 4-chloro-5-p-tolylimidazole-2-carbonitrile (CCIM) in soil and tomato. A robust method using QuEChERS coupled with liquid chromatography-tandem mass spectrometry (LC-MS/MS) was developed for simultaneous analysis of cyazofamid and CCIM, with limits of quantification of 0...
November 22, 2016: Environmental Science and Pollution Research International
https://www.readbyqxmd.com/read/27877177/comparative-transcriptomic-analyses-of-differentially-expressed-genes-in-transgenic-melatonin-biosynthesis-ovine-hiomt-gene-in-switchgrass
#3
Shan Yuan, Cong Guan, Sijia Liu, Yanhua Huang, Danyang Tian, Xin Cui, Yunwei Zhang, Fuyu Yang
Melatonin serves pleiotropic functions in prompting plant growth and resistance to various stresses. The accurate biosynthetic pathway of melatonin remains elusive in plant species, while the N-acetyltransferase and O-methyltransferase were considered to be the last two key enzymes during its biosynthesis. To investigate the biosynthesis and metabolic pathway of melatonin in plants, the RNA-seq profile of overexpression of the ovine HIOMT was analyzed and compared with the previous transcriptome of transgenic oAANAT gene in switchgrass, a model plant for cellulosic ethanol production...
2016: Frontiers in Plant Science
https://www.readbyqxmd.com/read/27827009/phenazine-1-carboxylic-acid-production-by-pseudomonas-fluorescens-lbum636-alters-phytophthora-infestans-growth-and-late-blight-development
#4
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 P...
November 9, 2016: Phytopathology
https://www.readbyqxmd.com/read/27812174/genetic-variation-within-clonal-lineages-of-phytophthora-infestans-revealed-through-genotyping-by-sequencing-and-implications-for-late-blight-epidemiology
#5
Zachariah R Hansen, Kathryne L Everts, William E Fry, Amanda J Gevens, Niklaus J Grünwald, Beth K Gugino, Dennis A Johnson, Steven B Johnson, Howard S Judelson, Brian J Knaus, Margaret T McGrath, Kevin L Myers, Jean B Ristaino, Pamela D Roberts, Gary A Secor, Christine D Smart
Genotyping-by-sequencing (GBS) was performed on 257 Phytophthora infestans isolates belonging to four clonal lineages to study within-lineage diversity. The four lineages used in the study were US-8 (n = 28), US-11 (n = 27), US-23 (n = 166), and US-24 (n = 36), with isolates originating from 23 of the United States and Ontario, Canada. The majority of isolates were collected between 2010 and 2014 (94%), with the remaining isolates collected from 1994 to 2009, and 2015. Between 3,774 and 5,070 single-nucleotide polymorphisms (SNPs) were identified within each lineage and were used to investigate relationships among individuals...
2016: PloS One
https://www.readbyqxmd.com/read/27779242/mir1918-enhances-tomato-sensitivity-to-phytophthora-infestans-infection
#6
Yushi Luan, Jun Cui, Weichen Wang, Jun Meng
Late blight of tomato is caused by the oomycete pathogen Phytophthora infestans. In our previous work, we identified and characterized a miR1918 in P. infestans (pi-miR1918), and showed that its sequence is similar to the sequence of tomato miR1918 (sly-miR1918). In this study, we used Arabidopsis thaliana pre-miR159a as a backbone to synthesize pi-miR1918 via PCR and mutagenesis. The artificial pi-miR1918 was used to investigate the role of miR1918 in tomato-P. infestans interaction. Trangenic tomato plants that overexpressed the artificial pi-miR1918 displayed more serious disease symptoms than wild-type tomato plants after infection with P...
October 25, 2016: Scientific Reports
https://www.readbyqxmd.com/read/27734576/the-durable-wheat-disease-resistance-gene-lr34-confers-common-rust-and-northern-corn-leaf-blight-resistance-in-maize
#7
Justine Sucher, Rainer Boni, Ping Yang, Peter Rogowsky, Heike Büchner, Christine Kastner, Jochen Kumlehn, Simon G Krattinger, Beat Keller
Maize (corn) is one of the most widely grown cereal crops globally. Fungal diseases of maize cause significant economic damage by reducing maize yields and by increasing input costs for disease management. The most sustainable control of maize diseases is through the release and planting of maize cultivars with durable disease resistance. The wheat gene Lr34 provides durable and partial field resistance against multiple fungal diseases of wheat, including three wheat rust pathogens and wheat powdery mildew...
October 13, 2016: Plant Biotechnology Journal
https://www.readbyqxmd.com/read/27723513/the-cell-biology-of-late-blight-disease
#8
Stephen C Whisson, Petra C Boevink, Shumei Wang, Paul Rj Birch
Late blight, caused by the oomycete Phytophthora infestans, is a major global disease of potato and tomato. Cell biology is teaching us much about the developmental stages associated with infection, especially the haustorium, which is a site of intimate interaction and molecular exchange between pathogen and host. Recent observations suggest a role for the plant endocytic cycle in specific recruitment of host proteins to the Extra-Haustorial Membrane, emphasising the unique nature of this membrane compartment...
October 7, 2016: Current Opinion in Microbiology
https://www.readbyqxmd.com/read/27714409/filamentous-actin-accumulates-during-plant-cell-penetration-and-cell-wall-plug-formation-in-phytophthora-infestans
#9
Kiki Kots, Harold J G Meijer, Klaas Bouwmeester, Francine Govers, Tijs Ketelaar
The oomycete Phytophthora infestans is the cause of late blight in potato and tomato. It is a devastating pathogen and there is an urgent need to design alternative strategies to control the disease. To find novel potential drug targets, we used Lifeact-eGFP expressing P. infestans for high resolution live cell imaging of the actin cytoskeleton in various developmental stages. Previously, we identified actin plaques as structures that are unique for oomycetes. Here we describe two additional novel actin configurations; one associated with plug deposition in germ tubes and the other with appressoria, infection structures formed prior to host cell penetration...
October 6, 2016: Cellular and Molecular Life Sciences: CMLS
https://www.readbyqxmd.com/read/27648246/local-adaptation-to-temperature-in-populations-and-clonal-lineages-of-the-irish-potato-famine-pathogen-phytophthora-infestans
#10
Nicolas Mariette, Annabelle Androdias, Romain Mabon, Roselyne Corbière, Bruno Marquer, Josselin Montarry, Didier Andrivon
Environmental factors such as temperature strongly impact microbial communities. In the current context of global warming, it is therefore crucial to understand the effects of these factors on human, animal, or plant pathogens. Here, we used a common-garden experiment to analyze the thermal responses of three life-history traits (latent period, lesion growth, spore number) in isolates of the potato late blight pathogen Phytophthora infestans from different climatic zones. We also used a fitness index (FI) aggregating these traits into a single parameter...
September 2016: Ecology and Evolution
https://www.readbyqxmd.com/read/27549366/a-survey-of-metabolic-changes-in-potato-leaves-by-nmr-based-metabolic-profiling-in-relation-to-resistance-to-late-blight-disease-under-field-conditions
#11
Satoru Tomita, Seishi Ikeda, Shogo Tsuda, Nobutaka Someya, Kenji Asano, Jun Kikuchi, Eisuke Chikayama, Hiroshi Ono, Yasuyo Sekiyama
Non-targeted nuclear magnetic resonance (NMR)-based metabolic profiling was applied to potato leaves to survey metabolic changes associated with late blight resistance under field conditions. Potato plants were grown in an experimental field and the compound leaves with no visible symptoms were collected from 20 cultivars/lines at two sampling time points: (i) the time of initial presentation of symptoms in susceptible cultivars and (ii) 12 days before this initiation. (1) H NMR spectra of the foliar metabolites soluble in deuterium oxide- or methanol-d4 -based buffers were measured and used for multivariate analysis...
August 23, 2016: Magnetic Resonance in Chemistry: MRC
https://www.readbyqxmd.com/read/27441721/contrasting-potato-foliage-and-tuber-defense-mechanisms-against-the-late-blight-pathogen-phytophthora-infestans
#12
Liangliang Gao, James M Bradeen
The late blight pathogen Phytophthora infestans can attack both potato foliage and tubers. When inoculated with P. infestans, foliage of nontransformed 'Russet Burbank' (WT) develops late blight disease while that of transgenic 'Russet Burbank' line SP2211 (+RB) does not. We compared the foliar transcriptome responses of these two lines to P. infestans inoculation using an RNA-seq approach. A total of 515 million paired end RNA-seq reads were generated, representing the transcription of 29,970 genes. We also compared the differences and similarities of defense mechanisms against P...
2016: PloS One
https://www.readbyqxmd.com/read/27359366/phytophthora-infestans-new-tools-and-old-ones-lead-to-new-understanding-and-precision-management
#13
William E Fry
New tools have revealed that migrations of Phytophthora infestans have been a dominant feature of the population biology of this pathogen for the past 50 years, and maybe for the past 170 years. We now have accurate information on the composition of many P. infestans populations. However, migration followed by selection can lead and has led to dramatically rapid changes in populations over large regions. Except for the highlands of central Mexico, many populations of P. infestans have probably been in flux over the past several decades...
August 4, 2016: Annual Review of Phytopathology
https://www.readbyqxmd.com/read/27348344/genomic-analyses-of-dominant-us-clonal-lineages-of-phytophthora-infestans-reveals-a-shared-common-ancestry-for-clonal-lineages-us11-and-us18-and-a-lack-of-recently-shared-ancestry-among-all-other-us-lineages
#14
Brian J Knaus, Javier Tabima, Carol Davis, Howard Judelson, Niklaus J Grünwald
Populations of the potato and tomato late blight pathogen, Phytophthora infestans, are well known for emerging as novel clonal lineages. These successions of dominant clones have historically been named US1 through US24, in order of appearance, since their first characterization using molecular markers. Hypothetically, these lineages can emerge through divergence from other US lineages, recombination among lineages or as novel, independent lineages originating outside the US. We tested for the presence of phylogenetic relationships among US lineages using a population of 31 whole genome sequences including dominant US clonal lineages as well as available samples from global populations...
June 27, 2016: Phytopathology
https://www.readbyqxmd.com/read/27335352/overexpression-of-osmyc2-results-in-the-up-regulation-of-early-ja-rresponsive-genes-and-bacterial-blight-resistance-in-rice
#15
Yuya Uji, Shiduku Taniguchi, Daisuke Tamaoki, Hodaka Shishido, Kazuya Akimitsu, Kenji Gomi
JASMONATE ZIM-domain (JAZ) proteins act as transcriptional repressors of jasmonic acid (JA) responses and play a crucial role in the regulation of host immunity in plants. Here, we report that OsMYC2, a JAZ-interacting transcription factor in rice (Oryza sativa L.), plays an important role in the resistance response against rice bacterial blight, which is one of the most serious diseases in rice, caused by Xanthomonas oryzae pv. oryzae (Xoo). The results showed that OsMYC2 interacted with some OsJAZ proteins in a JAZ-interacting domain (JID)-dependent manner...
September 2016: Plant & Cell Physiology
https://www.readbyqxmd.com/read/27314264/the-solanum-demissum-r8-late-blight-resistance-gene-is-an-sw-5-homologue-that-has-been-deployed-worldwide-in-late-blight-resistant-varieties
#16
Jack H Vossen, Gert van Arkel, Marjan Bergervoet, Kwang-Ryong Jo, Evert Jacobsen, Richard G F Visser
The potato late blight resistance gene R8 has been cloned. R8 is found in five late blight resistant varieties deployed in three different continents. R8 recognises Avr8 and is homologous to the NB-LRR protein Sw-5 from tomato. The broad spectrum late blight resistance gene R8 from Solanum demissum was cloned based on a previously published coarse map position on the lower arm of chromosome IX. Fine mapping in a recombinant population and bacterial artificial chromosome (BAC) library screening resulted in a BAC contig spanning 170 kb of the R8 haplotype...
September 2016: TAG. Theoretical and Applied Genetics. Theoretische und Angewandte Genetik
https://www.readbyqxmd.com/read/27303410/utilizing-omic-technologies-to-identify-and-prioritize-novel-sources-of-resistance-to-the-oomycete-pathogen-phytophthora-infestans-in-potato-germplasm-collections
#17
Pauline S M Van Weymers, Katie Baker, Xinwei Chen, Brian Harrower, David E L Cooke, Eleanor M Gilroy, Paul R J Birch, Gaëtan J A Thilliez, Alison K Lees, James S Lynott, Miles R Armstrong, Gaynor McKenzie, Glenn J Bryan, Ingo Hein
The greatest threat to potato production world-wide is late blight, caused by the oomycete pathogen Phytophthora infestans. A screen of 126 wild diploid Solanum accessions from the Commonwealth Potato Collection (CPC) with P. infestans isolates belonging to the genotype 13-A2 identified resistances in the species S. bulbocastanum, S. capsicibaccatum, S. microdontum, S. mochiquense, S. okadae, S. pinnatisectum, S. polyadenium, S. tarijense, and S. verrucosum. Effector-omics, allele mining, and diagnostic RenSeq (dRenSeq) were utilized to investigate the nature of resistances in S...
2016: Frontiers in Plant Science
https://www.readbyqxmd.com/read/27302335/arabidopsis-late-blight-infection-of-a-nonhost-plant-by-albugo-laibachii-enables-full-colonization-by-phytophthora-infestans
#18
Khaoula Belhaj, Liliana M Cano, David C Prince, Ariane Kemen, Kentaro Yoshida, Yasin F Dagdas, Graham J Etherington, Henk-Jan Schoonbeek, H Peter van Esse, Jonathan D G Jones, Sophien Kamoun, Sebastian Schornack
The oomycete pathogen Phytophthora infestans causes potato late blight, and as a potato and tomato specialist pathogen, is seemingly poorly adapted to infect plants outside the Solanaceae. Here, we report the unexpected finding that P. infestans can infect Arabidopsis thaliana when another oomycete pathogen, Albugo laibachii, has colonized the host plant. The behaviour and speed of P. infestans infection in Arabidopsis pre-infected with A. laibachii resemble P. infestans infection of susceptible potato plants...
June 15, 2016: Cellular Microbiology
https://www.readbyqxmd.com/read/27281327/targeted-and-untargeted-approaches-unravel-novel-candidate-genes-and-diagnostic-snps-for-quantitative-resistance-of-the-potato-solanum-tuberosum-l-to-phytophthora-infestans-causing-the-late-blight-disease
#19
Teresa Mosquera, Maria Fernanda Alvarez, José M Jiménez-Gómez, Meki Shehabu Muktar, Maria João Paulo, Sebastian Steinemann, Jinquan Li, Astrid Draffehn, Andrea Hofmann, Jens Lübeck, Josef Strahwald, Eckhard Tacke, Hans-Reinhardt Hofferbert, Birgit Walkemeier, Christiane Gebhardt
The oomycete Phytophthora infestans causes late blight of potato, which can completely destroy the crop. Therefore, for the past 160 years, late blight has been the most important potato disease worldwide. The identification of cultivars with high and durable field resistance to P. infestans is an objective of most potato breeding programs. This type of resistance is polygenic and therefore quantitative. Its evaluation requires multi-year and location trials. Furthermore, quantitative resistance to late blight correlates with late plant maturity, a negative agricultural trait...
2016: PloS One
https://www.readbyqxmd.com/read/27233778/silencing-of-six-susceptibility-genes-results-in-potato-late-blight-resistance
#20
Kaile Sun, Anne-Marie A Wolters, Jack H Vossen, Maarten E Rouwet, Annelies E H M Loonen, Evert Jacobsen, Richard G F Visser, Yuling Bai
Phytophthora infestans, the causal agent of late blight, is a major threat to commercial potato production worldwide. Significant costs are required for crop protection to secure yield. Many dominant genes for resistance (R-genes) to potato late blight have been identified, and some of these R-genes have been applied in potato breeding. However, the P. infestans population rapidly accumulates new virulent strains that render R-genes ineffective. Here we introduce a new class of resistance which is based on the loss-of-function of a susceptibility gene (S-gene) encoding a product exploited by pathogens during infection and colonization...
October 2016: Transgenic Research
keyword
keyword
23138
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"