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Ciqiong Chen, Li Long, Fusheng Zhang, Qin Chen, Cheng Chen, Xiaorui Yu, Qingya Liu, Jinku Bao, Zhangfu Long
Curcuma longa possesses powerful antifungal activity, as demonstrated in many studies. In this study, the antifungal spectrum of Curcuma longa alcohol extract was determined, and the resulting EC50 values (mg/mL) of its extract on eleven fungi, including Fusarium graminearum, Fusarium chlamydosporum, Alternaria alternate, Fusarium tricinctum, Sclerotinia sclerotiorum, Botrytis cinerea, Fusarium culmorum, Rhizopus oryzae, Cladosporium cladosporioides, Fusarium oxysporum and Colletotrichum higginsianum, were 0...
2018: PloS One
Pedro Talhinhas, Andreia Loureiro, Helena Oliveira
Olive anthracnose causes fruit rot leading to its drop or mummification, resulting in yield losses and in the degradation of oil quality. Taxonomy and distribution: The disease is caused by diverse species of Colletotrichum, mostly clustering in the C. acutatum species complex. Colletotrichum nymphaeae and C. godetiae are the prevalent species in the Northern Hemisphere, while C. acutatum sensu stricto is the most frequent species in the Southern Hemisphere, although it is recently and quickly emerging in the Northern Hemisphere...
March 8, 2018: Molecular Plant Pathology
V Guarnaccia, J Z Groenewald, G Polizzi, P W Crous
Species of Colletotrichum are considered important plant pathogens, saprobes, and endophytes on a wide range of plant hosts. Several species are well-known on citrus, either as agents of pre- or post-harvest infections, such as anthracnose, postbloom fruit drop, tear stain and stem-end rot on fruit, or as wither-tip of twigs. In this study we explored the occurrence, diversity and pathogenicity of Colletotrichum spp. associated with Citrus and allied genera in European orchards, nurseries and gardens. Surveys were carried out during 2015 and 2016 in Greece, Italy, Malta, Portugal and Spain...
December 2017: Persoonia
Willie A S Vieira, Waléria G Lima, Eduardo S Nascimento, Sami J Michereff, Marcos P S Câmara, Vinson P Doyle
Developing a comprehensive and reliable taxonomy for the Colletotrichum gloeosporioides species complex will require adopting data standards on the basis of an understanding of how methodological choices impact morphological evaluations and phylogenetic inference. We explored the impact of methodological choices in a morphological and molecular evaluation of Colletotrichum species associated with banana in Brazil. The choice of alignment filtering algorithm has a significant impact on topological inference and the retention of phylogenetically informative sites...
January 16, 2018: Mycologia
Qili Li, Junyan Bu, Zhihe Yu, Lihua Tang, Suiping Huang, Tangxun Guo, Jianyou Mo, Tom Hsiang
Here, we present a draft genome sequence of isolate 15060 of Colletotrichum fructicola , a causal agent of mango anthracnose. The final assembly consists of 1,048 scaffolds totaling 56,493,063 bp (G+C content, 53.38%) and 15,180 predicted genes.
February 22, 2018: Genome Announcements
Idris Yazgan, Jing Zhang, Victor Murithi Kariuki, Ayfer Akgul, Lauren Cronmiller, Ali Akgul, Francis Osonga, Abbey McMahon, Yang Gao, Gaddi Eshun, Seokheun Choi, Omowunmi A Sadik
The blue-green mold Penicillium italicum is among the most problematic post-harvest plant infections limiting the integrity of citrus and many other crops during storage and transportation, but there is no sensor for its on-site or field detection. We hereby, for the first time, report the development of novel biomolecular sensor for assessing the presence of Penicillium italicum spores and hyphae using carbohydrate-lectin recognitions. Two approaches were developed: (i) lateral tests using stand-alone poly (amic) acid (PAA) membranes and glass surfaces and (ii) quantitative tests on 96-well polystyrene plates and paper electrodes...
February 20, 2018: ACS Sensors
Casley Borges de Queiroz, Mateus Ferreira Santana, Pedro M Pereira Vidigal, Marisa Vieira de Queiroz
Fungi of the genus Colletotrichum are economically important and are used as models in plant-pathogen interaction studies. In this study, the complete mitochondrial genomes of two Colletotrichum lindemuthianum isolates were sequenced and compared with the mitochondrial genomes of seven species of Colletotrichum. The mitochondrial genome of C. lindemuthianum is a typical circular molecule 37,446 bp (isolate 89 A 2 2-3) and 37,440 bp (isolate 83.501) in length. The difference of six nucleotides between the two genomes is the result of a deletion in the ribosomal protein S3 (rps3) gene in the 83...
February 16, 2018: Applied Microbiology and Biotechnology
M Huleihel, E Shufan, L Tsror, U Sharaha, I Lapidot, S Mordechai, A Salman
Early detection of soil-borne pathogens, which have a negative effect on almost all agricultural crops, is crucial for effective targeting with the most suitable antifungal agents and thus preventing and/or reducing their severity. They are responsible for severe diseases in various plants, leading in many cases to substantial economic losses. In this study, infrared (IR) spectroscopic method, which is known as sensitive, accurate and rapid, was used to discriminate between different fungi in a mixture was evaluated...
February 7, 2018: Journal of Photochemistry and Photobiology. B, Biology
Nobuo Ogita, Yoko Okushima, Mutsutomo Tokizawa, Yoshiharu Y Yamamoto, Maho Tanaka, Motoaki Seki, Yuko Makita, Minami Matsui, Kaoru Okamoto Yoshiyama, Tomoaki Sakamoto, Tetsuya Kurata, Kei Hiruma, Yusuke Saijo, Naoki Takahashi, Masaaki Umeda
In mammalian cells, the transcription factor p53 plays a crucial role in transmitting DNA damage signals to maintain genome integrity. However, in plants, orthologous genes for p53 and checkpoint proteins are absent. Instead, the plant-specific transcription factor SUPPRESSOR OF GAMMA RADIATION 1 (SOG1) controls most of the genes induced by gamma irradiation and promotes DNA repair, cell cycle arrest, and stem cell death. Thus far, the genes directly controlled by SOG1 remain largely unknown, limiting the understanding of DNA damage signaling in plants...
February 11, 2018: Plant Journal: for Cell and Molecular Biology
S de Los Santos-Villalobos, J M Kremer, F I Parra-Cota, A C Hayano-Kanashiro, L F García-Ortega, S K Gunturu, J M Tiedje, S Y He, J J Peña-Cabriales
Burkholderia anthina XXVI is a rhizosphere bacterium isolated from a mango orchard in Mexico. This strain has a significant biological control activity against the causal agent of mango anthracnose, Colletotrichum gloeosporioides, likely through the production of siderophores and other secondary metabolites. Here, we present a draft genome sequence of B. anthina XXVI (approximately 7.7 Mb; and G + C content of 67.0%), with the aim of gaining insight into the genomic basis of antifungal modes of action, ecological success as a biological control agent, and full biosynthetic potential...
February 10, 2018: Archives of Microbiology
Xiao-Wei Chen, Zhong-Duo Yang, Xiao-Fei Li, Jian-Hui Sun, Li-Jun Yang, Xin-Guo Zhang
One new compound, colletotrichine B (1), was produced by the fungal Colletotrichum gloeosporioides GT-7. The structure of 1 was elucidated on the basis of spectroscopic analysis and X-ray crystallographic analysis. Monoamine oxidase (MAO), acetylcholinesterase (AChE) and phosphoinositide 3-kinase (PI3Kα) inhibitory activity of 1 was also evaluated. Compound 1 showed only AChE inhibiting activity with IC50 value of 38.0 ± 2.67 μg/mL.
February 8, 2018: Natural Product Research
Guowei Zheng, Shihong Luo, Shifei Li, Juan Hua, Weiqi Li, Shenghong Li
The Asteraceae plant Ageratina adenophora (also called Eupatorium adenophorum) has became the most destructive invasive species in China, especially the southwestern region, and is gravely threatening the native biodiversity. Its high reproductive capacity is partly due to the developed root system. From the roots of A. adenophora, ten compounds including three previously undescribed benzofuran derivatives (7-hydroxy-dehydrotremetone, 7,10,11-trihydroxy dehydrotremetone, 10-oxo-7-hydroxy-nordehydrotremetone), a previously undescribed chromene derivative (5-β-glucosyl-7-demethoxy-encecalin) and a previously undescribed monoterpene glucoside (8-hydroxy-8-β-glucosyl-2-carene) were isolated and identified...
January 24, 2018: Phytochemistry
Zhe Li, Ni Ma, Pei-Ji Zhao
An endophytic fungus, Chaetomium sp. YMF432, was isolated from Huperzia serrata (Thunb. ex Murray) Trev. and subjected to phytochemical investigation based on its special environment. From the extracts of fermentation solid of strain YMF 432, eight compounds including 1-O-methylemodin (1), 5-methoxy-2-methyl-3-tricosyl-1,4-benzoquinone (2), 4,8-dihydroxy-1-tetralone (3), (3β,5α,6α, 22E)-3-hydroxy-5,6-epoxy-7-one-8(14),22-dien-ergosta (4), ergosta-4,6,8(14),22-tetraen-3-one (5), β-sitostenone (6), β-sitosterol (7) and (22E,24R)-ergosta-5,7,22 -trien-3β-ol (8) were obtained...
February 4, 2018: Natural Product Research
Neeraj Choudhary, Vanya Bawa, Rajneesh Paliwal, Bikram Singh, Mohd Ashraf Bhat, Javid Iqbal Mir, Moni Gupta, Parvaze A Sofi, Mahendar Thudi, Rajeev K Varshney, Reyazul Rouf Mir
Common bean (Phaseolus vulgaris L.) is one of the most important grain legume crops in the world. The beans grown in north-western Himalayas possess huge diversity for seed color, shape and size but are mostly susceptible to Anthracnose disease caused by seed born fungus Colletotrichum lindemuthianum. Dozens of QTLs/genes have been already identified for this disease in common bean world-wide. However, this is the first report of gene/QTL discovery for Anthracnose using bean germplasm from north-western Himalayas of state Jammu & Kashmir, India...
2018: PloS One
Wilson José da Silva Junior, Raul Maia Falcão, Lucas Christian de Sousa-Paula, Nicolau Sbaraini, Willie Anderson Dos Santos Vieira, Waléria Guerreiro Lima, Sérgio de Sá Leitão Paiva Junior, Charley Christian Staats, Augusto Schrank, Ana Maria Benko-Iseppon, Valdir de Queiroz Balbino, Marcos Paz Saraiva Câmara
Colletotrichum musae is an important cosmopolitan pathogenic fungus that causes anthracnose in banana fruit. The entire genome of C. musae isolate GM20 (CMM 4420), originally isolated from infected banana fruit from Alagoas State, Brazil, was sequenced and annotated. The pathogen genomic DNA was sequenced on HiSeq Illumina platform. The C. musae GM20 genome has 50,635,197 bp with G + C content of 53.74% and in its present assembly has 2763 scaffolds, harboring 13,451 putative genes with an average length of 1626 bp...
April 2018: Data in Brief
May Moe Oo, Sang-Keun Oh
In 2016, grape fruits showing ripe rot symptom were found in fields of Korea. The fungus was isolated and identified as Colletotrichum viniferum based on morphological characteristics and nucleotide sequence data of the internal transcribed spacer, glyceraldehyde-3-phosphate dehydrogenase and β-tubulin. To our knowledge, this is the first report of C. viniferum causing grape ripe rot disease of grape fruits in Korea.
December 2017: Mycobiology
Nikita Mehta, Ferry Hagen, Sadaf Aamir, Sanjay K Singh, Abhishek Baghela
Colletotrichum gloeosporioides is an economically important fungal pathogen causing substantial yield losses indifferent host plants. To understand the genetic diversity and molecular epidemiology of this fungus, we have developed a novel, high-resolution multi-locus microsatellite typing (MLMT) method. Bioinformatic analysis of C. gloeosporioides unannotated genome sequence yielded eight potential microsatellite loci, of which five, CG1 (GT)n, CG2 (GT1)n, CG3 (TC)n, CG4 (CT)n, and CG5 (CT1)n were selected for further study based on their universal amplification potential, reproducibility, and repeat number polymorphism...
December 2017: Mycobiology
Ali Abdelmoteleb, Rosalba Troncoso-Rojas, Tania Gonzalez-Soto, Daniel González-Mendoza
The ability of Bacillus subtilis, strain ALICA to produce three mycolytic enzymes (chitinase, β-1,3-glucanase, and protease), was carried out by the chemical standard methods. Bacillus subtilis ALICA was screened based on their antifungal activity in dual plate assay and cell-free culture filtrate (25%) against five different phytopathogenic fungi Alternaria alternata, Macrophomina sp., Colletotrichum gloeosporioides, Botrytis cinerea, and Sclerotium rolfesii. The B. subtilis ALICA detected positive for chitinase, β-1,3-glucanase and protease enzymes...
December 2017: Mycobiology
Rukmini Mishra, Jatindra Nath Mohanty, Subodh Kumar Chand, Raj Kumar Joshi
Pepper anthracnose, caused by Colletotrichum species complex is the most destructive disease of chilli (Capsicum annuum L.). miRNAs are key modulators of transcriptional and post- transcriptional expression of genes during defense responses. In the present study, we performed a comparative miRNA profiling of susceptible (Arka Lohit-AL) and resistant (Punjab Lal-PL) chilli cultivars to identify 35 differentially expressed miRNAs that could be classified as positive, negative or basal regulators of defense against C...
February 2018: Plant Science: An International Journal of Experimental Plant Biology
Shawn A Christensen, James Sims, Martha Vaughan, Charles Hunter, Anna Block, Denis Willett, Hans T Alborn, Alisa Huffaker, Eric A Schmelz
Plant defense research is facilitated by the use of genome sequenced inbred lines; however, a foundational knowledge of interactions in commercial hybrids remains relevant to understanding mechanisms present in crops. Using an array of commercial maize hybrids, we quantified the accumulation patterns of defense-related metabolites and phytohormones in tissues challenged with diverse fungal pathogens. Across hybrids, Southern leaf blight (Cochliobolus heterostrophus) strongly elicited specific sesqui- and diterpenoid defenses, namely zealexin A4 (ZA4) and kauralexin diacids, compared to the stalk rotting agents Fusarium graminearum and Colletotrichum graminicola...
January 18, 2018: Journal of Experimental Botany
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