Abstract:
:Botrytis cinerea is a pathogenic fungus that causes gray mold disease in a broad range of crops. The high intraspecific variability of B. cinerea makes control of this fungus very difficult. Here, we isolated a variant B05.10M strain from wild-type B05.10. The B05.10M strain showed serious defects in mycelial growth, spore and sclerotia production, and virulence. Using whole-genome resequencing and site-directed mutagenesis, a single nucleotide mutation in the adenylate cyclase (BAC) gene that results in an amino acid residue (from serine to proline, S1407P) was shown to be the cause of various defects in the B05.10M strain. When we further investigated the effect of S1407 on BAC function, the S1407P mutation in bac showed decreased accumulation of intracellular cyclic AMP (cAMP), and the growth defect could be partially restored by exogenous cAMP, indicating that the S1407P mutation reduced the enzyme activity of BAC. Moreover, the S1407P mutation exhibited decreased spore germination rate and infection cushion formation, and increased sensitivity to cell wall stress, which closely related to fungal development and virulence. Taken together, our study indicates that the S1407 site of bac plays an important role in vegetative growth, sclerotial formation, conidiation and virulence in B. cinerea.
journal_name
Int J Mol Scijournal_title
International journal of molecular sciencesauthors
Chen X,Zhang X,Zhu P,Wang Y,Na Y,Guo H,Cai Y,Nie H,Jiang Y,Xu Ldoi
10.3390/ijms21082912subject
Has Abstractpub_date
2020-04-21 00:00:00issue
8issn
1422-0067pii
ijms21082912journal_volume
21pub_type
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