The SR-protein FgSrp2 regulates vegetative growth, sexual reproduction and pre-mRNA processing by interacting with FgSrp1 in Fusarium graminearum.
Curr Genet
; 66(3): 607-619, 2020 Jun.
Article
em En
| MEDLINE
| ID: mdl-32040734
ABSTRACT
Serine/arginine (SR) proteins play significant roles in pre-mRNA splicing in eukaryotes. To investigate how gene expression influences fungal development and pathogenicity in Fusarium graminearum, a causal agent of Fusarium head blight (FHB) of wheat and barley, our previous study identified a SR protein FgSrp1 in F. graminearum, and showed that it is important for conidiation, plant infection and pre-mRNA processing. In this study, we identified another SR protein FgSrp2 in F. graminearum, which is orthologous to Schizosaccharomyces pombe Srp2. Our data showed that, whereas yeast Srp2 is essential for growth, deletion of FgSRP2 resulted in only slight defects in vegetative growth and perithecia melanization. FgSrp2 localized to the nucleus and both its N- and C-terminal regions were important for the localization to the nucleus. FgSrp2 interacted with FgSrp1 to form a complex in vivo. Double deletion of FgSRP1 and FgSRP2 revealed that they had overlapping functions in vegetative growth and sexual reproduction. RNA-seq analysis revealed that, although deletion of FgSRP2 alone had minimal effects, deletion of both FgSRP1 and FgSRP2 caused significant changes in gene transcription and RNA splicing. Overall, our results indicated that FgSrp2 regulates vegetative growth, sexual reproduction and pre-mRNA processing by interacting with FgSrp1.
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Base de dados:
MEDLINE
Assunto principal:
Doenças das Plantas
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Reprodução
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Virulência
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Triticum
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Proteínas Fúngicas
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Precursores de RNA
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Fatores de Processamento de Serina-Arginina
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Fusarium
Tipo de estudo:
Prognostic_studies
Idioma:
En
Ano de publicação:
2020
Tipo de documento:
Article