Transformation of Didymella bryoniae mediated by Agrobacterium tumefaciens / 生物工程学报

Gummy stem blight, a plant disease caused by Didymella bryoniae, is one of the major diseases in melon. The disease can seriously reduce melon yield and quality. However, little information is available on the genetics and functional genomics of the fungal pathogen. In this study, we developed an Agrobacterium-mediated transformation system for D. bryoniae by using a universal pathogenic isolate DB11 and the Agrobacterium tumefaciens strain C58C1 carrying plasmid pBIG2RHPH2 harboring the hygromycin B phosphotransferase gene (hph). Total 45 transformants could be obtained per 1 x 10(5) spores when 1 x 10(6) spores per milliliter of D. bryoniae spore suspension were cocultivated with Agrobacterium cells at OD600 = 0.15 for 48 h in the presence of induction medium (pH 5.2) containing acetosyringone at 200 microg/mL and selection medium contained 100 microg/mL of hygromycin B and 200 microg/mL of cefotaxime sodium, ampicillin and tetracycline, respectively. The transformants were stable when grown on PDA medium without hygromycin B for five times and were verified by PCR amplification with the hph primers and by Southern blot analysis with the hph probe. The transformation system will be useful for further studies of functional genes in D. bryoniae.

Effect of Minimally Invasive Operation on Early Endometrial Carcinoma and Level of Patients' Satisfaction / 中国康复理论与实践

@#Objective To study laparoscopic pelvic lymphyectomy combined with vaginal hystectomy in the treatment of patients with stage Ⅰ endometrial carcinoma.Methods The data of 77 patients with stage Ⅰ endometrial carcinoma were reviewed retrospectively. These patients divided into the laparoscopic group and abdominal group according to the operation style. The operation time, blood loss, postoperation complication, rehabilition of the digestion tract, satisfaction degree to the operation of two groups were compared.Results There was no serious complications in the both groups. In the laparoscopic group, the operation time was longer than the abdominal group ( P<0.01), but so far as to the blood loss, the time of rehabilition of the digestion tract, the number of lymphyectomy, the postoperation pain alleviation and the degree of postoperation depression were superior to the abdominal group ( P<0.01).Conclusion Though the Laparoscopic operation takes longer time than the abdominal operation, it has much more advantage: mimimal blood loss, minimal abdominal scar, rapid postoperation rehabilition, much better pain alleviate, less urine retention.