The responses of plants to salt stress were discussed with respect to the effect of salt stress on phenotypic characters, photosynthesis, and phyto-hormone of plants. So far, many adaptation mechanisms of plants to sa...The responses of plants to salt stress were discussed with respect to the effect of salt stress on phenotypic characters, photosynthesis, and phyto-hormone of plants. So far, many adaptation mechanisms of plants to salt stress are known, among them osmoregulation and compartmentation of inorganic ions were especially related in the context about their roles on adaptation of plants to salt stress. In addition, the progresses of plant tolerance to salt stress mechanism, revealed by molecular biological methods in recent years, were also discussed in this paper. Ref展开更多
R5002_12, a salt tolerant line of Phragmites communis Trin., which was obtained from ethyl methane sulfonate (EMS) treated callus selected under saline stress, was compared with its wild line in respect to their m...R5002_12, a salt tolerant line of Phragmites communis Trin., which was obtained from ethyl methane sulfonate (EMS) treated callus selected under saline stress, was compared with its wild line in respect to their molecular biological, physiological and biochemical characterizations. Five arbitrary primers were screened which showed differences in DNA amplified polymorphism between the variant and its wild line. Some new proteins appeared in the salt tolerant plant under salt stress. Electrophoresis of peroxidase and esterase also showed some differences in isozyme expression between them. The chlorophyll content of the variant was higher than that of the original variety, whether the plants were under salt stress or not.展开更多
目的观察骨痿汤联合经皮椎体后凸成形术(P K P)治疗老年骨质疏松性椎体压缩性骨折的效果。方法收集2017年1月至2020年2月该院收治的老年骨质疏松性椎体压缩性骨折患者85例,采用骨痿汤联合P K P治疗。结果患者均顺利完成手术,发生骨水泥...目的观察骨痿汤联合经皮椎体后凸成形术(P K P)治疗老年骨质疏松性椎体压缩性骨折的效果。方法收集2017年1月至2020年2月该院收治的老年骨质疏松性椎体压缩性骨折患者85例,采用骨痿汤联合P K P治疗。结果患者均顺利完成手术,发生骨水泥渗漏仅10例(11.8%),未见脊髓、神经压迫、动静脉渗漏等严重并发症。术后X线片提示椎体高度恢复满意,骨水泥在椎体内填充良好。术后第1天V A S评分和ODI明显优于术前。结论采用骨痿汤联合P K P治疗老年骨质疏松性椎体压缩性骨折效果满意,并发症少。展开更多
A mutant UW 3, which is unable to fix N 2 in the presence of Mo (Nif -) but undergo phenotypic reversal to Nif + under Mo deficiency, was able to grow in Mo- and NH 3-deficient medium containing Mn, and the growt...A mutant UW 3, which is unable to fix N 2 in the presence of Mo (Nif -) but undergo phenotypic reversal to Nif + under Mo deficiency, was able to grow in Mo- and NH 3-deficient medium containing Mn, and the growth was accelerated by Mn at low concentration. A partly purified nitrogenase component Ⅰ protein separated from UW 3 grown in the Mn-containing medium was shown to contain Fe and Mn atoms (ratio of Fe/Mo/Mn: 10.41/0.19/1.00) with C 2H 2- and H +-reducing activity which almost equal to half of that of MoFe protein purified from wild-type mutant of Azotobacter vinelandii Lipmann. This protein was obviously different from MoFe protein in both absorption spectrum and circular dichroism, and the molecular weight of subunits in Mn-containing protein was close to that of α subunit in MoFe protein. The preliminary results indicated that the protein containing Mn might be a nitrogenase component Ⅰ protein.展开更多
文摘The responses of plants to salt stress were discussed with respect to the effect of salt stress on phenotypic characters, photosynthesis, and phyto-hormone of plants. So far, many adaptation mechanisms of plants to salt stress are known, among them osmoregulation and compartmentation of inorganic ions were especially related in the context about their roles on adaptation of plants to salt stress. In addition, the progresses of plant tolerance to salt stress mechanism, revealed by molecular biological methods in recent years, were also discussed in this paper. Ref
文摘R5002_12, a salt tolerant line of Phragmites communis Trin., which was obtained from ethyl methane sulfonate (EMS) treated callus selected under saline stress, was compared with its wild line in respect to their molecular biological, physiological and biochemical characterizations. Five arbitrary primers were screened which showed differences in DNA amplified polymorphism between the variant and its wild line. Some new proteins appeared in the salt tolerant plant under salt stress. Electrophoresis of peroxidase and esterase also showed some differences in isozyme expression between them. The chlorophyll content of the variant was higher than that of the original variety, whether the plants were under salt stress or not.
文摘目的观察骨痿汤联合经皮椎体后凸成形术(P K P)治疗老年骨质疏松性椎体压缩性骨折的效果。方法收集2017年1月至2020年2月该院收治的老年骨质疏松性椎体压缩性骨折患者85例,采用骨痿汤联合P K P治疗。结果患者均顺利完成手术,发生骨水泥渗漏仅10例(11.8%),未见脊髓、神经压迫、动静脉渗漏等严重并发症。术后X线片提示椎体高度恢复满意,骨水泥在椎体内填充良好。术后第1天V A S评分和ODI明显优于术前。结论采用骨痿汤联合P K P治疗老年骨质疏松性椎体压缩性骨折效果满意,并发症少。
文摘A mutant UW 3, which is unable to fix N 2 in the presence of Mo (Nif -) but undergo phenotypic reversal to Nif + under Mo deficiency, was able to grow in Mo- and NH 3-deficient medium containing Mn, and the growth was accelerated by Mn at low concentration. A partly purified nitrogenase component Ⅰ protein separated from UW 3 grown in the Mn-containing medium was shown to contain Fe and Mn atoms (ratio of Fe/Mo/Mn: 10.41/0.19/1.00) with C 2H 2- and H +-reducing activity which almost equal to half of that of MoFe protein purified from wild-type mutant of Azotobacter vinelandii Lipmann. This protein was obviously different from MoFe protein in both absorption spectrum and circular dichroism, and the molecular weight of subunits in Mn-containing protein was close to that of α subunit in MoFe protein. The preliminary results indicated that the protein containing Mn might be a nitrogenase component Ⅰ protein.
