نتایج جستجو برای: chemotypes

تعداد نتایج: 676  

2015
Maryam Akaberi Milad Iranshahy Mehrdad Iranshahi

Ferula communis L., subsp. communis, namely giant fennel, has extensively been used in traditional medicine for a wide range of ailments. Fresh plant materials, crude extracts and isolated components of F. communis showed a wide spectrum of in vitro and in vivo pharmacological properties including antidiabetic, antimicrobial, antiproliferative, and cytotoxic activities. The present paper, revie...

2013
Ghada Abou Ammar Reno Tryono Katharina Döll Petr Karlovsky Holger B. Deising Stefan G. R. Wirsel

Fusarium graminearum is a plant pathogen infecting several important cereals, resulting in substantial yield losses and mycotoxin contamination of the grain. Triazole fungicides are used to control diseases caused by this fungus on a worldwide scale. Our previous microarray study indicated that 15 ABC transporter genes were transcriptionally upregulated in response to tebuconazole treatment. He...

2015
Rabi A. Musah Edgard O. Espinoza Robert B. Cody Ashton D. Lesiak Earl D. Christensen Hannah E. Moore Simin Maleknia Falko P. Drijfhout

A high throughput method for species identification and classification through chemometric processing of direct analysis in real time (DART) mass spectrometry-derived fingerprint signatures has been developed. The method entails introduction of samples to the open air space between the DART ion source and the mass spectrometer inlet, with the entire observed mass spectral fingerprint subjected ...

2009
Ken Keefover-Ring John D. Thompson Yan B. Linhart

The concept of plant chemotype has long been useful to describe secondary chemical phenotypes; however, the idea has practical limitations, especially when applied to ecological questions. This work reports the discovery of a new 1,8-cineole chemotype of Thymus vulgaris from a well-studied area in southern France. Multivariate statistical analysis of ethanol-extracted plant terpenes was used to...

2016
Miriam J. Müller Caroline S. Stokes Frank Lammert Dietrich A. Volmer

Most studies examining the relationships between vitamin D and disease or health focus on the main 25-hydroxyvitamin D3 (25(OH)D3) metabolite, thus potentially overlooking contributions and dynamic effects of other vitamin D metabolites, the crucial roles of several of which have been previously demonstrated. The ideal assay would determine all relevant high and low-abundant vitamin D species s...

Journal: :Plant physiology 2010
Ida Elken Sønderby Meike Burow Heather C Rowe Daniel J Kliebenstein Barbara Ann Halkier

While R2R3 MYB transcription factors are a large gene family of transcription factors within plants, comprehensive functional data in planta are still scarce. A model for studying R2R3 MYB control of metabolic networks is the glucosinolates (GLSs), secondary metabolites that control plant resistance against insects and pathogens and carry cancer-preventive properties. Three related members of t...

2017
Xiali Guo Meng Cui Min Deng Xingxing Liu Xueyong Huang Xinglei Zhang Liping Luo

Five chemotypes, the isoborneol-type, camphora-type, cineole-type, linalool-type and borneol-type of Cinnamomum camphora (L.) Presl have been identified at the molecular level based on the multivariate analysis of mass spectral fingerprints recorded from a total of 750 raw leaf samples (i.e., 150 leaves equally collected for each chemotype) using desorption atmospheric pressure chemical ionizat...

2015
Liliana O. Rocha Matthew H. Laurence Robert H. Proctor Susan P. McCormick Brett A. Summerell Edward C. Y. Liew Marc Maresca

Fusarium goolgardi, isolated from the grass tree Xanthorrhoea glauca in natural ecosystems of Australia, is closely related to fusaria that produce a subgroup of trichothecene (type A) mycotoxins that lack a carbonyl group at carbon atom 8 (C-8). Mass spectrometric analysis revealed that F. goolgardi isolates produce type A trichothecenes, but exhibited one of two chemotypes. Some isolates (50%...

2014
Hahk-Soo Kang Sean F. Brady

Sequence-guided mining of metagenomic libraries provides a means of recovering specific natural product gene clusters of interest from the environment. In this study, we use ketosynthase gene (KS) PCR amplicon sequences (sequence tags) to explore the structural and biosynthetic diversities of pentangular polyphenols (PP). In phylogenetic analyses, eDNA-derived sequence tags often fall between c...

2016
Canxing Duan Zihui Qin Zhihuan Yang Weixi Li Suli Sun Zhendong Zhu Xiaoming Wang

Ear rot is a serious disease that affects maize yield and grain quality worldwide. The mycotoxins are often hazardous to humans and livestock. In samples collected in China between 2009 and 2014, Fusarium verticillioides and F. graminearum species complex were the dominant fungi causing ear rot. According to the TEF-1α gene sequence, F. graminearum species complex in China included three indepe...

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