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https://www.readbyqxmd.com/read/28330129/the-recombinant-pea-defensin-drr230a-is-active-against-impacting-soybean-and-cotton-pathogenic-fungi-from-the-genera-fusarium-colletotrichum-and-phakopsora
#1
Ariane Ferreira Lacerda, Rafael Perseghini Del Sarto, Marilia Santos Silva, Erico Augusto Rosas de Vasconcelos, Roberta Ramos Coelho, Vanessa Olinto Dos Santos, Claudia Vieira Godoy, Claudine Dinali Santos Seixas, Maria Cristina Mattar da Silva, Maria Fatima Grossi-de-Sa
Plant defensins are antifungal peptides produced by the innate immune system plants developed to circumvent fungal infection. The defensin Drr230a, originally isolated from pea, has been previously shown to be active against various entomopathogenic and phytopathogenic fungi. In the present study, the activity of a yeast-expressed recombinant Drr230a protein (rDrr230a) was tested against impacting soybean and cotton fungi. First, the gene was subcloned into the yeast expression vector pPICZαA and expressed in Pichia pastoris...
June 2016: 3 Biotech
https://www.readbyqxmd.com/read/28322849/trans-cinnamic-acid-and-xenorhabdus-szentirmaii-metabolites-synergize-the-potency-of-some-commercial-fungicides
#2
Selcuk Hazir, David I Shapiro-Ilan, Clive H Bock, Luis G Leite
Development of novel approaches for the control of fungal phytopathogens is desirable. In this study we hypothesized that the combination of commercial fungicides with certain enhancing agents could result in synergistic levels of control. Prior research has indicated that trans-cinnamic-acid (TCA), a metabolite of the bacteria Photorhabdus luminescens and metabolites of Xenorhabdus szentirmaii are particularly toxic to various phytpathogenic fungi when compared to metabolites of other Xenorhabdus or Photorhabdus spp...
March 18, 2017: Journal of Invertebrate Pathology
https://www.readbyqxmd.com/read/28301718/the-wheat-lr34-multi-pathogen-resistance-gene-confers-resistance-to-anthracnose-and-rust-in-sorghum
#3
Wendelin Schnippenkoetter, Clive Lo, Guoquan Liu, Katherine Dibley, Wai Lung Chan, Jodie White, Ricky Milne, Alexander Zwart, Eunjung Kwong, Beat Keller, Ian Godwin, Simon G Krattinger, Evans Lagudah
The ability of the wheat Lr34 multi-pathogen resistance gene (Lr34res) to function across a wide taxonomic boundary was investigated in transgenic Sorghum bicolor. Increased resistance to sorghum rust and anthracnose disease symptoms following infection with the biotrophic pathogen Puccinia purpurea and the hemibiotroph Colletotrichum sublineolum respectively occurred in transgenic plants expressing the Lr34res ABC transporter. Transgenic sorghum lines that highly expressed the wheat Lr34res gene exhibited immunity to sorghum rust compared to the low expressing single copy Lr34res genotype that conferred partial resistance...
March 16, 2017: Plant Biotechnology Journal
https://www.readbyqxmd.com/read/28296933/are-duplicated-genes-responsible-for-anthracnose-resistance-in-common-bean
#4
Larissa Carvalho Costa, Rafael Storto Nalin, Magno Antonio Patto Ramalho, Elaine Aparecida de Souza
The race 65 of Colletotrichum lindemuthianum, etiologic agent of anthracnose in common bean, is distributed worldwide, having great importance in breeding programs for anthracnose resistance. Several resistance alleles have been identified promoting resistance to this race. However, the variability that has been detected within race has made it difficult to obtain cultivars with durable resistance, because cultivars may have different reactions to each strain of race 65. Thus, this work aimed at studying the resistance inheritance of common bean lines to different strains of C...
2017: PloS One
https://www.readbyqxmd.com/read/28283954/genome-shuffling-of-colletotrichum-lini-for-improving-3%C3%AE-7%C3%AE-15%C3%AE-trihydroxy-5-androsten-17-one-production-from-dehydroepiandrosterone
#5
Jin Sun, Hui Li, Yu Ni, Xiaomei Zhang, Jinsong Shi, Zhenghong Xu
3β,7α,15α-Trihydroxy-5-androsten-17-one (7α,15α-diOH-DHEA) is a key intermediate of the novel oral contraceptive Yasmin. It can be catalyzed from dehydroepiandrosterone (DHEA) through Colletotrichum lini. Improvement of 7α,15α-diOH-DHEA production was performed through recursive protoplast fusion of C. lini ST in a genome shuffling format. 7α,15α-diOH-DHEA yield of the best performing recombinant C. lini ST-F307 reached 6.08 g/L from 10 g/L DHEA, and this was 94.9% higher than that of the initial C...
March 10, 2017: Journal of Industrial Microbiology & Biotechnology
https://www.readbyqxmd.com/read/28280027/draft-genome-assembly-of-colletotrichum-chlorophyti-a-pathogen-of-herbaceous-plants
#6
P Gan, M Narusaka, A Tsushima, Y Narusaka, Y Takano, K Shirasu
Colletotrichum chlorophyti is a fungal pathogen that infects various herbaceous plants, including crops such as legumes, tomato, and soybean. Here, we present the genome of C. chlorophyti NTL11, isolated from tomato. Analysis of this genome will allow a clearer understanding of the molecular mechanisms underlying fungal host range and pathogenicity.
March 9, 2017: Genome Announcements
https://www.readbyqxmd.com/read/28277972/thienopyrimidine-type-compounds-protect-arabidopsis-plants-against-the-hemibiotrophic-fungal-pathogen-colletotrichum-higginsianum-and-bacterial-pathogen-pseudomonas-syringae-pv-maculicola
#7
Mari Narusaka, Yoshihiro Narusaka
Plant activators activate systemic acquired resistance-like defense responses or induced systemic resistance, and thus protect plants from pathogens. We screened a chemical library composed of structurally diverse small molecules. We isolated six plant immune-inducing thienopyrimidine-type compounds and their analogous compounds. It was observed that the core structure of thienopyrimidine plays a role in induced resistance in plants. Furthermore, we highlight the protective effect of thienopyrimidine-type compounds against both hemibiotrophic fungal pathogen, Colletotrichum higginsianum, and bacterial pathogen, Pseudomonas syringae pv...
February 21, 2017: Plant Signaling & Behavior
https://www.readbyqxmd.com/read/28277970/analyses-of-natural-variation-indicates-that-the-absence-of-rps4-rrs1-and-amino-acid-change-in-rps4-cause-loss-of-their-functions-and-resistance-to-pathogens
#8
Mari Narusaka, Satoshi Iuchi, Yoshihiro Narusaka
A pair of Arabidopsis thaliana resistance proteins, RPS4 and RRS1, recognizes the cognate Avr effector from the bacterial pathogens Pseudomonas syringae pv. tomato expressing avrRps4 (Pst-avrRps4), Ralstonia solanacearum, and the fungal pathogen Colletotrichum higginsianum and leads to defense signaling activation against the pathogens. In the present study, we analyzed 14 A. thaliana accessions for natural variation in Pst-avrRps4 and C. higginsianum susceptibility, and found new compatible and incompatible Arabidopsis-pathogen interactions...
March 4, 2017: Plant Signaling & Behavior
https://www.readbyqxmd.com/read/28254700/natural-%C3%AE-methylenelactam-analogues-design-synthesis-and-evaluation-of-%C3%AE-alkenyl-%C3%AE-and-%C3%AE-lactams-as-potential-antifungal-agents-against-colletotrichum-orbiculare
#9
Wang Delong, Wang Lanying, Wu Yongling, Song Shuang, Feng Juntao, Zhang Xing
In our continued efforts to improve the potential utility of the α-methylene-γ-lactone scaffold, 62 new and 59 known natural α-methylenelactam analogues including α-methylene-γ-lactams, α-arylidene-γ and δ-lactams, and 3-arylideneindolin-2-ones were synthesized as the bioisosteric analogues of the α-methylenelactone scaffold. The results of antifungal and cytotoxic activity indicated that among these derivatives compound (E)-1-(2, 6-dichlorobenzyl)-3-(2-fluorobenzylidene) pyrrolidin-2-one (Py51) possessed good selectivity with the highest antifungal activity against Colletotrichum orbiculare with IC50 = 10...
April 21, 2017: European Journal of Medicinal Chemistry
https://www.readbyqxmd.com/read/28252162/identification-of-lipopeptides-produced-by-bacillus-subtilis-czk1-isolated-from-the-aerial-roots-of-rubber-trees
#10
C P He, L Y Fan, W H Wu, Y Q Liang, R Li, W Tang, X L Zheng, Y N Xiao, Z X Liu, F C Zheng
We obtained a strain of Bacillus subtilis, which we named Czk1, from the aerial roots of rubber trees. This bacterial isolate exhibits strong antagonistic activity against Ganoderma pseudoferreum, Phellinus noxius, Helicobasidium compactum, Rigidoporus lignosus, Sphaerostilbe repens, and Colletotrichum gloeosporioides. Our earlier research has shown that the antagonistic activity of a fermentation supernatant Czk1 isolate produces a complex mixture of lipopeptides. In this study, we used methanol to extract crude lipopeptides, purified them using a Sephadex G-25 column, cloned the lipopeptide genes, and analyzed purified fractions by matrix-assisted laser desorption ionization-time of flight mass spectrometry (MALDI-TOF-MS) to identify the lipopeptides from B...
February 23, 2017: Genetics and Molecular Research: GMR
https://www.readbyqxmd.com/read/28247170/synthesis-and-biological-evaluation-of-arylpyrazoles-as-fungicides-against-phytopathogenic-fungi
#11
Jin Zhang, Ju-Fang Peng, Tao Wang, Yang Kang, Sisi Jing, Zun-Ting Zhang
3-phenol-1H-pyrazoles (2), 4-halogeno-3-phenol-1H-pyrazoles (3) and 2-(1-phenol-1H-pyrazol-5-yl)phenols (4) were prepared by the condensation of (E)-3-(dimethylamino)-1-phenylprop-2-en-1-ones and hydrazine hydrate or phenylhydrazine in good yields. They were evaluated against five phytopathogens fungi, namely Cytospora sp., Colletotrichum gloeosporioides, Botrytis cinerea, Alternaria solani and Fusarium solani in vitro. Most of the above-mentioned compounds exhibited activities. For example, 4-chloro-2-(1H-pyrazol-3-yl)phenol (3k) and 4-bromo-3-phenol-1H-pyrazole (3b) showed good and broad-spectrum antifungal properties against Cytospora sp...
February 28, 2017: Molecular Diversity
https://www.readbyqxmd.com/read/28219524/the-function-and-transcriptome-analysis-of-a-bzip-transcription-factor-cgap1-in-colletotrichum-gloeosporioides
#12
Xiaoyu Li, Yateng Wu, Zhiqiang Liu, Chenghui Zhang
Colletotrichum gloeosporioides is an important pathogen of anthracnose, which is able to infect numerous crops in tropical and subtropical regions, causing great economic losses. To investigate the fungal response to host-generated reactive oxygen species (ROS), we cloned and characterized the CgAP1 gene of C. gloeosporioides. CgAP1 encoded a bZIP transcription factor which had a bZIP DNA-binding domain and two cysteine-rich domains structurally and functionally related to Saccharomyces cerevisiae YAP1. Deletion of CgAP1 in C...
April 2017: Microbiological Research
https://www.readbyqxmd.com/read/28215508/biocatalyst-mediated-production-of-11-15-dihydroxy-derivatives-of-androst-1-4-dien-3-17-dione
#13
Yuqian Qiao, Yanbing Shen, Wei Huang, Yanping Wang, Jiajia Ren, Ting Xia, Min Wang
Hydroxylation of steroids at various positions is a powerful tool for the production of valuable pharmaceutical ingredients and precursors. Our paper reported the synchronous dihydroxylation of an efficient strain, i.e., Colletotrichum lini AS3.4486, at two points. C. lini AS3.4486 was selected from 10 strains; this strain can catalyze the dihydroxylation of androst-1,4-dien-3,17-dione at C-11α and C-15α positions. Transformation of ADD(I) by C. lini AS3.4486 produced metabolites II-IV. The structures of these compounds were elucidated by liquid chromatography-mass spectrometry (LC-MS), Fourier Transform infrared spectroscopy (FTIR), nuclear magnetic resonance (NMR), and X-ray as 15-hydroxyandrost-1,4-dien-3,17-dione (15α-OH-ADD; II), 11,15-dihydroxyandrost-1,4-dien-3,17-dione (11,15-diOH-ADD; III), and 15,17β-dihy-droxyandrost-1,4-dien-3-one (15-OH-BD; BD is the abbreviation of boldenone; IV)...
February 17, 2017: Journal of Bioscience and Bioengineering
https://www.readbyqxmd.com/read/28204541/cell-wall-composition-and-penetration-resistance-against-the-fungal-pathogen-colletotrichum-higginsianum-are-affected-by-impaired-starch-turnover-in-arabidopsis-mutants
#14
Timo Engelsdorf, Cornelia Will, Jörg Hofmann, Christine Schmitt, Brian B Merritt, Leonie Rieger, Marc S Frenger, André Marschall, Rochus B Franke, Sivakumar Pattathil, Lars M Voll
No abstract text is available yet for this article.
January 1, 2017: Journal of Experimental Botany
https://www.readbyqxmd.com/read/28201983/comparative-analysis-of-the-mitochondrial-genomes-of-colletotrichum-gloeosporioides-sensu-lato-insights-into-the-evolution-of-a-fungal-species-complex-interacting-with-diverse-plants
#15
Xiaofei Liang, Xianglin Tian, Wenkui Liu, Tingyu Wei, Wei Wang, Qiuyue Dong, Bo Wang, Yanan Meng, Rong Zhang, Mark L Gleason, Guangyu Sun
BACKGROUND: The fungal species complex Colletotrichum gloeosporioides sensu lato contains over 20 plant-interacting species. These species exhibit different life styles (e.g., endophytes, foliar and fruit pathogens) and show considerable variation in host and tissue adaptation strategies. Accurate species delimitation in C. gloeosporioides s.l. is very challenging due to nascent lineage boundaries and phenotypic plasticity, which strongly impedes studies of the complex's host-interaction biology...
February 15, 2017: BMC Genomics
https://www.readbyqxmd.com/read/28186158/transcriptome-analysis-reveals-a-complex-interplay-between-resistance-and-effector-genes-during-the-compatible-lentil-colletotrichum-lentis-interaction
#16
Vijai Bhadauria, Perumal Vijayan, Yangdou Wei, Sabine Banniza
Colletotrichum lentis is a hemibiotrophic pathogen and causes anthracnose on lentil. To understand the molecular mechanism underlying the symptomatic phase of infection, a cDNA plasmid library was developed from the susceptible lentil cultivar Eston infected with an isolate of the virulent race 0 of C. lentis. The library was sequenced on the Sanger sequencing platform, generating a total of 11,094 expressed sequence tags (ESTs) representing 3,488 unigenes. Mapping of unigenes onto the C. lentis and the L. culinaris genomes resulted in the identification of 2,418 unigenes of fungal origin and 1,070 unigenes of plant origin...
February 10, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28174578/extracellular-alkalinization-as-a-defense-response-in-potato-cells
#17
Natalia Moroz, Karen R Fritch, Matthew J Marcec, Diwaker Tripathi, Andrei Smertenko, Kiwamu Tanaka
A quantitative and robust bioassay to assess plant defense response is important for studies of disease resistance and also for the early identification of disease during pre- or non-symptomatic phases. An increase in extracellular pH is known to be an early defense response in plants. In this study, we demonstrate extracellular alkalinization as a defense response in potatoes. Using potato suspension cell cultures, we observed an alkalinization response against various pathogen- and plant-derived elicitors in a dose- and time-dependent manner...
2017: Frontiers in Plant Science
https://www.readbyqxmd.com/read/28167891/construction-of-a-system-for-the-strawberry-nursery-production-towards-elimination-of-latent-infection-of-anthracnose-fungi-by-a-combination-of-pcr-and-microtube-hybridization
#18
Kazuyoshi Furuta, Saki Nagashima, Tsuyoshi Inukai, Chikara Masuta
One of the major problems in strawberry production is difficulty in diagnosis of anthracnose caused by Colletotrichum acutatum or Glomerella cingulata in latent infection stage. We here developed a diagnostic tool for the latent infection consisting of initial culturing of fungi, DNA extraction, synthesis of PCR-amplified probes and microtube hybridization (MTH) using a macroarray. The initial culturing step is convenient to lure the fungi out of the plant tissues, and to extract PCR-inhibitor-free DNA directly from fungal hyphae...
February 2017: Plant Pathology Journal
https://www.readbyqxmd.com/read/28161946/methyl-and-p-bromobenzyl-esters-of-hydrogenated-kaurenoic-acid-for-controlling-anthracnose-in-common-bean-plants
#19
Suellen F Mota, Denilson F Oliveira, Vladimir C G Heleno, Ana Carolina F Soares, Jacob O Midiwo, Elaine A Souza
Kaurenoic acid derivatives were prepared and submitted to in vitro assays with the fungus Colletotrichum lindemuthianum, which causes anthracnose disease in the common bean. The most active substances were found to be methyl and p-bromobenzylesters, 7 and 9, respectively, of the hydrogenated kaurenoic acid, which presented a minimum inhibitory concentration (MIC) of 0.097 and 0.131 mM, respectively, while the commercial fungicide methyl thiophanate (MT) presented a MIC of 0.143 mM. Substances 7 (1.401 mM) and 9 (1...
February 13, 2017: Journal of Agricultural and Food Chemistry
https://www.readbyqxmd.com/read/28161088/synthesis-and-qsar-study-of-novel-%C3%AE-methylene-%C3%AE-butyrolactone-derivatives-as-antifungal-agents
#20
Yong-Ling Wu, De-Long Wang, En-Hui Guo, Shuang Song, Jun-Tao Feng, Xing Zhang
Thirty-six new α-benzylidene-γ-lactone compounds based α-methylene-γ-butyrolactone substructure were prepared and characterized by spectroscopic analysis. All compounds were evaluated for antifungal activities in vitro against six plant pathogenic fungi and the half maximal inhibitory concentration (IC50) against Botrytis cinerea and Colletotrichum lagenarium were investigated. Compounds 5c-3 and 5c-5 with the halogen atom exhibited excellent fungicidal activity against B. cinerea (IC50=22.91, 18.89μM)...
January 13, 2017: Bioorganic & Medicinal Chemistry Letters
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