Next Article in Journal
The Synergism of PGN, LTA and LPS in Inducing Transcriptome Changes, Inflammatory Responses and a Decrease in Lactation as Well as the Associated Epigenetic Mechanisms in Bovine Mammary Epithelial Cells
Previous Article in Journal
Transformations of Selected Fusarium Toxins and Their Modified Forms During Malt Loaf Production
Previous Article in Special Issue
Whole Genome Analysis Revealed the Genes Responsible for Citreoviridin Biosynthesis in Penicillium citreonigrum
Open AccessArticle

Signatures of TRI5, TRI8 and TRI11 Protein Sequences of Fusarium incarnatum-equiseti Species Complex (FIESC) Indicate Differential Trichothecene Analogue Production

Department of Life Sciences, Faculty of Science and Technology, The University of the West Indies, St. Augustine, Trinidad and Tobago, West Indies
*
Author to whom correspondence should be addressed.
Toxins 2020, 12(6), 386; https://doi.org/10.3390/toxins12060386
Received: 8 May 2020 / Revised: 3 June 2020 / Accepted: 7 June 2020 / Published: 11 June 2020
The variability and phylogeny among TRI5, TRI8 and TRI11 nucleotide and translated protein sequences of isolates from Trinidad belonging to Fusarium incarnatum-equiseti species complex (FIESC) were compared with FIESC reference sequences. Taxa appeared to be more divergent when DNA sequences were analyzed compared to protein sequences. Neutral and non-neutral mutations in TRI protein sequences that may correspond to variability in the function and structure of the selected TRI proteins were identified. TRI5p had the lowest amino acid diversity with zero predicted non-neutral mutations. TRI5p had potentially three protein disorder regions compared to TRI8p with five protein disorder regions. The deduced TRI11p was more conserved than TRI8p of the same strains. Amino acid substitutions that may be non-neutral to protein function were only detected in diacetoxyscirpenol (DAS) and fusarenon-X (FUS-X) producers of the reference sequence subset for TRI8p and TRI11p. The deduced TRI5 and TRI8 amino acid sequences were mapped to known 3D-structure models and indicated that variations in specific protein order/disorder regions exist in these sequences which affect the overall structural conservation of TRI proteins. Assigning single or combination non-neutral mutations to a particular toxicogenic phenotype may be more representative of potential compared to using genotypic data alone, especially in the absence of wet-lab, experimental validation. View Full-Text
Keywords: Fusarium; non-neutral mutations; sequence diversity; trichothecene Fusarium; non-neutral mutations; sequence diversity; trichothecene
Show Figures

Graphical abstract

MDPI and ACS Style

Villafana, R.T.; Rampersad, S.N. Signatures of TRI5, TRI8 and TRI11 Protein Sequences of Fusarium incarnatum-equiseti Species Complex (FIESC) Indicate Differential Trichothecene Analogue Production. Toxins 2020, 12, 386.

Show more citation formats Show less citations formats
Note that from the first issue of 2016, MDPI journals use article numbers instead of page numbers. See further details here.

Article Access Map by Country/Region

1
Search more from Scilit
 
Search
Back to TopTop