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Peanut scab caused by Elsinoë arachidis is found throughout China's peanut-growing areas. Elsinochrome produced by E. arachidis is a perylenequinone photosensitive mycotoxin vital to the pathogenic process of the pathogen. In this study, the complex mechanism underlying the regulation of elsinochrome biosynthesis by E. arachidis was investigated based on various nutritional and environmental factors. The initiation of elsinochrome biosynthesis depends on light. E. arachidis produced substantially more quantities of elsinochrome when grown on a semi-synthetic medium (PDA) than when grown on synthetic media with defined ingredients in the presence of light. Elsinochrome accumulation decreased when adjusted with either citrate or phosphate buffers and changing pH suppressed the radical growth. At temperatures ranging from 10°C to 25°C, the production of elsinochrome increased, peaking at 28°C, and it decreased slightly at 30°C. 63 field-collected isolates from China were assessed for the level of elsinochrome production, and pathogenicity analysis was conducted by selecting 12 strains from each 3 of the 4 groups with different levels of elsinochrome production. A direct correlation was observed between elsinochrome production and pathogenicity among the isolates. The results showed elsinochrome biosynthesis to be controlled by E. arachidis and showed elsinochrome to be a vital virulence factor of E. arachidis, required for disease severity.
This article was published in the following journal.
Name: PloS one
Mango (Mangifera indica) is widely grown across southern China, especially in the provinces of Guangxi, Hainan, Yunnan, Sichuan, and Taiwan. Guangxi itself has over 86,667 ha of mango production. The ...
The potato common scab pathogen produces N-coronafacoyl-L-isoleucine (CFA-Ile), which is a member of the coronafacoyl family of phytotoxins that are synthesized by multiple plant pathogenic bacteria....
A highly virulent cotton wilt pathogen, f. sp. VCG0114 (race 4) was found in West Texas in 2017, after being known in California since 2001. Isolates obtained from wilted plants collected in 2017 fr...
To investigate the distribution and diversity of the pathogens associated with Fusarium crown rot in the Huanghuai wheat growing region (HHWGR) of China, we collected wheat samples with symptomatic st...
Stem-end rot caused by is a destructive disease of mango. field isolates resistant to carbendazim (MBC) were collected in Hainan Province, China. In this study, the characteristics of these field is...
EGAST 2008 is a prospective, non interventional, multicentric study (approximately 2000 isolates from 15- 20 sites). Objectives: - Comparison of antimicrobial susceptibility usi...
This study focus on the genetic changes of B. pertussis clinical isolates. For this panels of B. pertussis isolates has been collected during four periods in different European countries.
Data on neonatal GBS disease are very limited in China. Acceptance and implementation of prevention measures such as antibiotics prevention or vaccination against GBS disease would require...
This study is to observe the carriage rate ofStreptococcus pneumoniae (S.p.), Haemophilus influenzae type b (Hib) and Moraxella catarrhalis （M.Cat） in healthy Chinese children aged 12-...
Primary objectives: 1. To investigate the prevalence of azole resistance in Aspergillus clinical isolates collected in participating hospitals in Taiwan 2. To investigate ...
A country in southeastern Asia, bordering the Gulf of Thailand, Gulf of Tonkin, and South China Sea, as well as China, Laos, and Cambodia. The capital is Hanoi.
Special Administrative Region of the People's Republic of China since December 20, 1999 with its own constitution. The island of Macau and adjacent islands are located off the southeast coast of China.
A protein phytotoxin from the seeds of Ricinus communis, the castor oil plant. It agglutinates cells, is proteolytic, and causes lethal inflammation and hemorrhage if taken internally.
A subtype of INFLUENZA A VIRUS that is highly virulent in poultry and wild birds, but shows varying degrees of pathogenicity in mice. The H5N8 virus subtype has a polybasic amino acid motif at the HA cleavage site which explains its pathogenicity in birds, and expresses surface proteins HEMAGGLUTININ 5 and NEURAMINIDASE 8 which are typical of Highly Pathogenic Avian Influenza viruses.
A statistical technique that isolates and assesses the contributions of categorical independent variables to variation in the mean of a continuous dependent variable.