1
|
He L, Yu H, Dai Y, Wang Y. Analysis of genetic variations of heat shock proteins Hsp70 and Hsp90 in Isaria farinosa strains from the Yunnan province of China. Folia Microbiol (Praha) 2019; 64:521-534. [PMID: 30666590 DOI: 10.1007/s12223-018-00676-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/01/2018] [Accepted: 12/26/2018] [Indexed: 11/29/2022]
Abstract
In the present study, the cDNA sequences of Hsp70 and Hsp90 genes of Isaria farinosa (designated IFHSP70 and IFHSP90) were cloned and characterized using multiple techniques of molecular biology and bioinformatics. The genetic differentiation of the two genes was investigated among 10 geographically separated populations distributed in the Yunnan province. The complete sequence of the IFHSP70 cDNA had a length of 2158 bp, and contained an open reading frame (ORF) of 1962 bp, encoding a 71-kDa polypeptide comprising of 653 amino acids. IFHSP90 cDNA had a length of 2144 bp, and contained an ORF of 2103 bp, encoding a polypeptide of 79.23 kDa, comprising of 700 amino acids. The deduced amino acid sequences of IFHSP70 and IFHSP90 shared high sequence identities with other fungi. Fundamental information pertaining to the protein families, signatures, and conserved motifs of Hsp70 and Hsp90 were also identified. Analysis of molecular variances (AMOVA) from the Hsp70 and Hsp90 genes showed that the genetic variation within-population (83.26%, 83.08%) was greater than among the populations (16.74%, 16.92%). The values of nucleotide diversity (Pi), haplotype diversity (Hd), coefficient of genetic differentiation (Fst), and gene flow (Nm) were calculated. For Hsp70, Pi = 0.0425, Hd = 0.888, Fst = 0.167, Nm = 1.24; For Hsp90, Pi = 0.0420, Hd = 0.894, Fst = 0.169, and Nm = 1.22. These data indicated that the genetic differentiation among 10 different geographical populations of I. farinosa was limited. This study describes, for the first time, cloning, characterization and identification of Isaria farinosa Hsp70 and Hsp90 genes, and provides a preliminary basis for exploring the genetic structure of the genus Isaria using the sequences of Hsp70 and Hsp90 as molecular markers.
Collapse
Affiliation(s)
- Lu He
- Yunnan Herbal Laboratory, Institute of Herb Biotic Resources, School of Life Sciences, Yunnan University, Kunming, 650091, China.,Institute of Tropical Eco-agriculture, Yunnan Academy of Agriculture Science, Yuanmou, 651399, China.,International Joint Research Center for Sustainable Utilization of Cordyceps Bioresources in China and Southeast Asia, Yunnan University, Kunming, 650091, China
| | - Hong Yu
- Yunnan Herbal Laboratory, Institute of Herb Biotic Resources, School of Life Sciences, Yunnan University, Kunming, 650091, China. .,International Joint Research Center for Sustainable Utilization of Cordyceps Bioresources in China and Southeast Asia, Yunnan University, Kunming, 650091, China.
| | - Yongdong Dai
- Yunnan Herbal Laboratory, Institute of Herb Biotic Resources, School of Life Sciences, Yunnan University, Kunming, 650091, China.,International Joint Research Center for Sustainable Utilization of Cordyceps Bioresources in China and Southeast Asia, Yunnan University, Kunming, 650091, China
| | - Yuanbing Wang
- Yunnan Herbal Laboratory, Institute of Herb Biotic Resources, School of Life Sciences, Yunnan University, Kunming, 650091, China.,International Joint Research Center for Sustainable Utilization of Cordyceps Bioresources in China and Southeast Asia, Yunnan University, Kunming, 650091, China.,Research Center of Cordyceps Development and Utilization of Kunming, Yunnan Herbal Biotech Co., Ltd., Kunming, 650106, China
| |
Collapse
|
2
|
Álvarez SP, Guerrero AM, Duarte BND, Tapia MAM, Medina JAC, Domínguez Rodríguez Y. First Report of a New Isolate of Metarhizium rileyi from Maize Fields of Quivicán, Cuba. Indian J Microbiol 2018; 58:222-226. [PMID: 29651182 DOI: 10.1007/s12088-018-0721-5] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/06/2017] [Accepted: 03/08/2018] [Indexed: 11/29/2022] Open
Abstract
Metarhizium rileyi (Farlow) Samson is an important entomopathogenic fungus of more than 30 species of Lepidoptera larvae. The aim of this research was to characterize isolate of M. rileyi from Quivicán, Cuba on the basis of morphological and molecular approaches. The fungus was isolated from samples of S. frugiperda larvae collected from maize fields of Quivicán municipality, Mayabeque province, Cuba, and it was cultured on PDA + Ampicillin solid media for morphological characterization. The DNA was isolated using CTAB method and internal transcribed spacer (ITS1, ITS4) were used as the primers for the amplification. The amplified products of 1335 bp were purified and sequenced at CINVESTAV-IPN in both the directions using the above primers. A consensus sequence was obtained by alignment of the forward and reverse sequences for this region and deposited in GenBank (MG637450). The fungus produced slightly cottony colony of pale green color and dispersed conidia and septal mycelium were observed under the optical microscope. A BLAST search of the sequence in GenBank revealed a 99% of identity with several strains of N. rileyi (e.g., AF368501.1, AB268359.1 and EU553337.1) and M. rileyi (e.g., KY436756.1). This is the first report of M. rileyi isolate from maize fields of Quivicán in Cuba and this is important for biodiversity studies and is another possibility for Integrated Pest Management.
Collapse
Affiliation(s)
- Sandra Pérez Álvarez
- Depto. de Biotecnología Agrícola, Instituto Politécnico Nacional, CIIDIR Unidad Sinaloa, Blvd. Juan de Dios Bátiz Paredes 250, CP 81101 Guasave, Sinaloa Mexico
| | - Amaury Méndez Guerrero
- Empresa Bioagricultura Aplicada AMG, Calle Santos Degollado entre Guillermo Nelson y Cuauhtemoc, Colonia Centro, CP 81000 Guasave, Sinaloa Mexico
| | - Bernardo Nayar Débora Duarte
- Depto. de Biotecnología Agrícola, Instituto Politécnico Nacional, CIIDIR Unidad Sinaloa, Blvd. Juan de Dios Bátiz Paredes 250, CP 81101 Guasave, Sinaloa Mexico
| | - Marco Antonio Magallanes Tapia
- Depto. de Biotecnología Agrícola, Instituto Politécnico Nacional, CIIDIR Unidad Sinaloa, Blvd. Juan de Dios Bátiz Paredes 250, CP 81101 Guasave, Sinaloa Mexico
| | - Jesús Alicia Chávez Medina
- Depto. de Biotecnología Agrícola, Instituto Politécnico Nacional, CIIDIR Unidad Sinaloa, Blvd. Juan de Dios Bátiz Paredes 250, CP 81101 Guasave, Sinaloa Mexico
| | - Yoannis Domínguez Rodríguez
- 3Instituto de Biociências, Universidade Estadual Paulista (UNESP), Câmpus São Vicente, Praça Infante Dom Henrique s/n, Parque Bitaru, São Vicente, SP CEP 11380-972 Brazil
| |
Collapse
|
3
|
Ranadive P, Mehta A, Chavan Y, Marx A, George S. Morphological and Molecular Differentiation of Sporidiobolus johnsonii ATCC 20490 and Its Coenzyme Q10 Overproducing Mutant Strain UF16. Indian J Microbiol 2014; 54:343-57. [PMID: 24891743 DOI: 10.1007/s12088-014-0466-8] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/27/2013] [Accepted: 04/03/2014] [Indexed: 11/24/2022] Open
Abstract
Coenzyme Q10 (CoQ10) is an industrially important molecule having nutraceutical and cosmeceutical applications. CoQ10 is mainly produced by microbial fermentation and the process demands the use of strains with high productivity and yields of CoQ10. During strain improvement program consisting of sequential induced mutagenesis, rational selection and screening process, a mutant strain UF16 was generated from Sporidiobolus johnsonii ATCC 20490 with 2.3-fold improvements in CoQ10 content. EMS and UV rays were used as mutagenic agents for generating UF16 and it was rationally selected based on atorvastatin resistance as well as survival at free radicals exposure. We investigated the genotypic and phenotypic changes in UF16 in order to differentiate it from wild type strain. Morphologically it was distinct due to reduced pigmentation of colony, reduced cell size and significant reduction in mycelial growth forms with abundance of yeast forms. At molecular level, UF16 was differentiated based on PCR fingerprinting method of RAPD as well as large and small-subunit rRNA gene sequences. Rapid molecular technique of RAPD analysis using six primers showed 34 % polymorphic fragments with mean genetic distance of 0.235. The partial sequences of rRNA-gene revealed few mutation sites on nucleotide base pairs. However, the mutations detected on rRNA gene of UF16 were less than 1 % of total base pairs and its sequence showed 99 % homology with the wild type strain. These mutations in UF16 could not be linked to phenotypic or genotypic changes on CoQ10 biosynthetic pathway that resulted in improved yield. Hence, investigating the mutations responsible for deregulation of CoQ10 pathway is essential to understand the cause of overproduction in UF16. Phylogenetic analysis based on RAPD bands and rRNA gene sequences coupled with morphological variations, exhibited the novelty of mutant UF16 having potential for improved CoQ10 production.
Collapse
Affiliation(s)
- Prafull Ranadive
- Fermentation Technology Lab, Natural Products Department, Piramal Enterprises Limited, Nirlon Complex, Off Western Express Highway, Goregaon (East), Mumbai, 400063 India
| | - Alka Mehta
- School of Bio Science and Technology, VIT University, Vellore, 632014 Tamil Nadu India
| | - Yashwant Chavan
- geneOmbio Technologies Private Limited, Baner, Pune, 411045 Maharashtra India
| | - Anbukayalvizhi Marx
- Fermentation Technology Lab, Natural Products Department, Piramal Enterprises Limited, Nirlon Complex, Off Western Express Highway, Goregaon (East), Mumbai, 400063 India
| | - Saji George
- Fermentation Technology Lab, Natural Products Department, Piramal Enterprises Limited, Nirlon Complex, Off Western Express Highway, Goregaon (East), Mumbai, 400063 India
| |
Collapse
|