Publications by authors named "Hongyang Dai"
Article Synopsis
- * Eleven strains were isolated from wild birds and domestic poultry, revealing two main genotypes (S and A) with distinct shedding patterns and pathogenic impacts on ducks.
- * Findings indicate ongoing interspecies transmission of H9N2 in Yunnan, emphasizing the need for further epidemiological research to understand its spread among bird populations.
is a highly valued perennial medicinal herb plant in Yunnan Province, China, and the taproots are the main medicinal parts that are rich in active substances of saponins. The main purpose of this study is to uncover the physiological and molecular mechanism of saponin accumulation triggered by methyl jasmonate (MeJA) under arbuscular mycorrhizal fungi (AMF) by determining physiological indices, high-throughput sequencing and correlation analysis. Physiological results showed that the biomass and saponin contents of , the concentrations of jasmonic acids (JAs) and the key enzyme activities involved in notoginsenoside biosynthesis significantly increased under AMF or MeJA, but the interactive treatment of AMF and MeJA weakened the effect of AMF, suggesting that a high concentration of endogenous JA have inhibitory effect.
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- - Fowl adenoviruses (FAdVs) are found worldwide in poultry and are linked to various health issues, with a new strain identified in black-necked cranes, classified as serotype 4 (BNC2021).
- - The genomic analysis of BNC2021 revealed specific gene deletions and mutations associated with increased viral pathogenicity.
- - A study demonstrated that this strain can infect mallard ducks, causing hepatitis-hydropericardium syndrome and widespread viral replication in multiple organs, emphasizing the need for monitoring FAdVs in wild bird populations.
The seasonal migration of wild aquatic birds plays a critical role in the maintenance, transmission, and incursion of the avian influenza virus (AIV). AIV surveillance was performed during 2020-2021 in two national nature reserves with abundant wild bird resources in Yunnan, China. Four H5N8 AIVs isolates from the common crane were identified by next-generation sequencing.
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