...
  • 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Estuarine Coastal and Shelf Science >Salinity and growth effects on dimethylsulfoniopropionate (DMSP) and dimethylsulfoxide (DMSO) cell quotas of Skeletonema costatum, Phaeocystis globosa and Heterocapsa triquetra
【24h】

Salinity and growth effects on dimethylsulfoniopropionate (DMSP) and dimethylsulfoxide (DMSO) cell quotas of Skeletonema costatum, Phaeocystis globosa and Heterocapsa triquetra

机译：骨缩水素（DMSP）和二甲基硫氧化物（DMSO）细胞配额的盐度和生长效应骨质肿大，Phaeocystis Globosa和Heterocapsa Triquetra

获取原文
获取原文并翻译 | 示例
           
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

The effects of growth stage and salinity on dimethylsulfoniopropionate (DMSP) and dimethylsulfoxide (DMSO) cellular content were investigated in laboratory batch cultures of three phytoplankton species (Skeletonema costatum, Phaeocystis globosa and Heterocapsa triquetra). DMSP and DMSO cell quotas of the three microalgae were measured at three salinities (20, 27, 35) and in three growth phases at salinity 35. DMSP and DMSO cell quotas varied along the growth for all species with an increase of DMSP for S. costanun and a decrease of the DMSP to DMSO ratio (DMSP/DMSO) for P. globosa and H. triquetra in late exponential-stationary phase. We hypothesized that the oxidative stress caused by light and/or nutrients limitation induced the oxidation of DMS or DMSP to DMSO. DMSP cell quotas increased with salinity, mostly in S. costatum and H. triquetra, for which DMSP is supposed to be an osmoregulator. In H. triquetra, DMSO cell quotas stayed constant with increasing salinity. DMSO was near detection limits in S. costatum experiments. In P. globosa, DMSP and DMSO concentrations increased at low and high salinity. DMSO showed higher increase at low salinity presumably as the result of a salinity-induced oxidative stress which caused DMSP oxidation into DMSO in hyposaline conditions. We concluded that DMSP acts as an osmoregulator for the three studied species and DMSO acts as an antioxidant for P. globosa at low salinity. In P. globosa and H. triquetra, DMSP/DMSO increase with salinity in response to salinity stress.
机译：在三种浮游植物物种（骨骼急性烹饪，Phaeocystis Glocosa和Heterocapsa Triquetra）的实验室批量培养物中，研究了生长阶段和盐度对二甲基磺基丙酸（DMSP）和二甲基磺酰甲醚（DMSO）细胞含量的影响。三种微藻的DMSP和DMSO细胞配额在三个盐度（20,27,35）中测量，在盐度35的三个生长相中测量.DMSP和DMSO细胞配额沿着所有物种的生长而变化，S. Costanun和DMSO比（DMSP / DMSO）的DMSP和H. Triquetra在晚期指数平稳阶段的降低。我们假设由光和/或营养素引起的氧化应激诱导DMS或DMSP的氧化至DMSO。 DMSP细胞配额随盐度而增加，主要是在S. Costatum和H. Triquetra中，DMSP应该是OSMoreculator。在H. Triquetra，DMSO细胞配额随着盐度的增加而保持恒定。 DMSO接近S. Cateatum实验的检测限。在P.Hollosa，DMSP和DMSO浓度在低盐度下增加。 DMSO在低盐度下显示出较高的升高，因为盐度诱导的氧化应激导致DMSP氧化成DMSO中的高血糖条件。我们得出结论，DMSP作为三种研究的Osmoreculator，DMSO作为低盐度的P. Globosa的抗氧化剂。在P. Globosa和H. Triquetra，DMSP / DMSO随着盐度胁迫而增加盐度。

著录项

相似文献

  • 外文文献
获取原文

客服邮箱：kefu@zhangqiaokeyan.com

京公网安备：11010802029741号 ICP备案号：京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有

  • 客服微信

  • 服务号