Unknown,Transcriptomics,Genomics,Proteomics

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Beauveria bassiana SNF 1 (BbSNF1) regulating genes involved in conidiation

ABSTRACT: Gene BbSNF1 playes an essential role in mediating metabolism and cell development during conidation, a determinant to the biocontrol potential of entomopathogenic fungi. The genome-wide exprssion analysis involved in fungal conidiation was analyzed by using high throughput sequencing (RNA-Seq). Our transcriptional profiles revealed that numerous differentially expressed genes (DEGs), of which involved in metabolism, cell transport and cell rescue, were significantly involved in deveopment of fungal conida. . Total RNA obtained from BbSNF1 disruption mutant were compared to that of wild type strain (WT) grown on SDA plates (Glucose 4%, Peptone 1%, and Yeast extract 1% plus 1.5% Agar).

ORGANISM(S): Beauveria bassiana ARSEF 2860

SUBMITTER: Shenghua Ying

PROVIDER: E-GEOD-60002 | biostudies-arrayexpress |

REPOSITORIES: biostudies-arrayexpress

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Publications

RNA sequencing analysis identifies the metabolic and developmental genes regulated by BbSNF1 during conidiation of the entomopathogenic fungus Beauveria bassiana.

He Pu-Hong PH Wang Xiu-Xiu XX Chu Xin-Ling XL Feng Ming-Guang MG Ying Sheng-Hua SH

Current genetics 20141123 2

Conidiation promotes fungal dispersal and survival in the environment, and is a determinant for the biocontrol potential of Beauveria bassiana. The SNF1/AMPK protein kinases function as an important regulator of fungal development and energy metabolism, and play a crucial role in conidiation of the filamentous fungi. In previous study, it has been established that the B. bassiana homolog (BbSNF1) controls conidial production. This study showed that the ΔBbSNF1 mutants displayed a delayed develop ...[more]

PMID: 25417093

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Project description:Understanding how genomes encode complex cellular and organismal behaviors is an outstanding challenge of modern genetics. Unlike classical screening methods, analysis of the genetic variation that occurs naturally in wild populations can enable rapid, genome-scale trait mapping with a medium-throughput experimental design. Here we describe the results of the first genome-wide association analysis (GWAS) of a microbial eukaryote, using wild isolates of the filamentous fungus Neurospora crassa. We transcriptionally profiled each of 112 individuals collected in Louisiana and used RNA-seq data to genotype each strain at thousands of genetic loci genome-wide. We used these genotypes in a mapping analysis of microbial communication. In N. crassa, germinated asexual spores (germlings) sense the presence of other germlings, grow toward them in a coordinated fashion, and fuse. We evaluated germlings of each strain for their ability to chemically sense, chemotropically seek, and undergo cell fusion. GWAS identified one gene, NCU04379 (cse-1, encoding a homolog of neuronal calcium sensor), at which inheritance was strongly associated with the efficiency of germling communication. Deletion of cse-1 significantly lowered germling communication and fusion, and two genes encoding predicted binding partners of CSE-1 were also required for the communication trait. Additionally, mining our association results for signaling and secretion genes with a potential role in germling communication, we validated six more novel determinants of germling communication, including a secreted protease and two other genes whose deletion conferred a novel phenotype of increased communication and multi-germling fusion. These results establish protein secretion as a linchpin of germling communication in N. crassa and shed light on the regulation of communication molecules in this fungus. Our study demonstrates the power of population-genetic analyses for the rapid identification of genes contributing to complex traits in microbial species. 112 mycelial mRNA profiles of 16 hour wild type (WT) Neurospora crassa strains were generated by deep sequencing, using Illumina GAIIx.

Dataset Information

Beauveria bassiana SNF 1 (BbSNF1) regulating genes involved in conidiation

Publications

RNA sequencing analysis identifies the metabolic and developmental genes regulated by BbSNF1 during conidiation of the entomopathogenic fungus Beauveria bassiana.

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