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Ethyl Methane Sulfonate Induces Disease Resistance in Begonia × hiemalis Fotsch.
Yang-Er Chen,Ying-Hong Zhang,Shu Yuan,Han-Mei Liu,Xian-Yin Zeng,Huai-Yu Zhang 한국원예학회 2014 Horticulture, Environment, and Biotechnology Vol.55 No.6
To evaluate the disease resistance of Begonia × hiemalis Fotsch. ‘Schwabenland Red’ mutants induced byethyl methane sulphonate (EMS), we investigated the incidence and severity of stem rot caused by Rhizoctoniasolani Kuhn, and their morphological changes. In this study, we obtained three mutants with highly resistant diseaseafter two rounds of screening when the inoculated amount was 3 sheets/plant. The severity scale was 0 and therewere no obvious symptoms of stem rot in highly resistant Begonia × hiemalis. However, most of EMS mutagenizedplants were susceptible to stem rot caused by R. solani under this inoculated amount. In addition, these resistantmutants had different phenotypes as compared with the uninfected control plants. The color of leaves of the R. solani-resistent mutants was different with the control plants and their leaves were bigger than that of the control. The shape and number of their flowers were obviously different, as compared to the control plants.
( Li Wang ),( Yan Nan Han ),( Shan Jin ),( Yin Ma ),( Guo Liang Wang ),( Qing Song Zhao ),( Yin Er Chen ) 한국응용생명화학회 2015 Journal of Applied Biological Chemistry (J. Appl. Vol.58 No.4
The pharmacokinetics of florfenicol were studied in healthy and vibriosis-infected large yellow croaker (Pseudosciaena crocea) following administration of a single oral dose of 20 mg·kg(-1) at 25±2℃. After oral administration, florfenicol levels in tissues (liver, kidney, muscle, serum, and skin) were analyzed using high-performance liquid chromatography. A two-compartment open model was used to describe the pharmacokinetics of florfenicol following oral administration. Compared to the healthy group, the absorption rate of vibriosis-infected fish significantly decreased, peak-time (Tmax) delayed, maximum concentration (Cmax) declined, total body clearance decreased, the elimination half-life (T1/2β) was extended, and the area under the curve increased. These results indicate that a 20 mg·kg(-1) oral dose of florfenicol administered once daily continuously for 4 or 5 days can be used for the treatment of Vibrio alginolyticus infection in large yellow croaker (Pseudosciaena crocea).