A novel candidate effector CcAA9-20333 from Colletotrichum coccodes: identification, expression, and functional site analysis.

Auxiliary activity family 9 (AA9) lytic polysaccharide monooxygenases (LPMOs) are monocopper enzymes that oxidatively degrade a variety of polysaccharides. Despite extensive research on this class of enzymes, the essential LPMO gene involved in pathogenicity and its characterization still requires further study. Here, we obtained the candidate effector AA9 LPMOs gene CcAA9-20333 by mining transcriptome data of Colletotrichum coccodes, the causal agent of potato anthracnose.

Explorations of a novel effector CcAA9-20333 from Colletotrichum coccodes: the potential roles played in host immunity.

The AA9 LMPO protein, CcAA9-20333, acts as a secretory effector by inhibiting N. benthamiana cell death via its enzymatic activity and contributes to the virulence of C. coccodes.

Isolation and identification of the causal agent of gummy stem blight disease in Cucumis sativus caused by a bacterial pathogen in China.

Recently, a new bacterial disease was detected on cucumber stalks. In order to study the pathogenesis of this disease, the pathogenic bacteria were isolated and identified on the basis of morphological and molecular characteristics, and further analyzed for pathogenicity and antagonistic evaluation. Pathogenicity analysis showed that HlJ-3 caused melting decay and cracking in cucumber stems, and the strain reisolated from re-infected cucumber stalks was morphologically identical to HlJ-3 colonies, which is consistent with the Koch's postulates.

A PL1 family pectate lyase gene was the pathogenic factor of 5T-1 causing potato common scab.

Pectate lyases (PL), as important polysaccharide lyases, play an important role in the infection of host plants by pathogenic. A previous study found that the PL gene was up-regulated in the interaction between 5T-1 and potatoes. In this study, 5T-1 was used as the study object, and its gene function was investigated using bioinformatics analysis, prokaryotic expression, and CRISPR-Cas9 technology.

Analysis of Bioactive Compounds Produced by Bacillus mojavensis ZA1 and Their Antagonistic Effect on Colletotrichum coccodes by GC-MS.

The plant disease Colletotrichum coccodes, which lowers potato yields, poses a severe danger to the booming potato industry. Isolated plant endophytic bacteria from highland pasture can produce a variety of metabolites that lessen the risk that the pathogen C. coccodes poses to plant growth and development.

In vitro application of proline in potato tubers under newly emerging bacteria Lelliottia amnigena infection.

Biotic stress deleteriously affects growth, development, and productivity in plants. Proline (Pro) plays a significant role in enhancing plant resistance to pathogen infection. However, its effects on reducing Lelliottia amnigena-induced oxidative stress in potato tubers remain unknown.

Isolation and identification of Tussilago farfara leaf spot caused by Alternaria alternata in China.

Tussilago farfara is of vital medical value. A new leaf spot disease was observed on T. farfara leaves, in Dingxi, Gansu Province, China, in October 2019.

Identification and biological characterization of a new pathogen that causes potato scab in Gansu Province, China.

Potato scab caused by pathogenic Streptomyces is a serious soil-borne disease on potato. In this study, a new Streptomyces strain 5A-1 was isolated from potato samples in China. Based on morphological characteristics, 16S rDNA gene sequence analyses, it was identified as Streptomyces griseoplanus (Streptacidiphilus griseoplanus), pathogenicity of which was measured by the methods of small potato chips, radish slices and potato pot trial inoculation.