稀土Y(上标 3+)对铜绿微囊藻生长和生理特性的影响

Translated Titles

Effects of Yttrium (Y(superscript 3+)) on Physiological and Biochemical Characteristics of Microcystis aeruginosa


王应军(Ying-Jun Wang);陈燕;金航标;高鹏;余游

Key Words

钇 ; 铜绿微囊藻 ; 叶绿素a ; 丙二醛 ; 超微结构 ; Yttrium Y(superscript 3+) ; Microcystic aeruginosa ; Chl-a ; Malondiadehyde ; Ultrastructure



Volume or Term/Year and Month of Publication

39卷4期(2011 / 02 / 01)

Page #

2248 - 2251

Content Language


Chinese Abstract

[目的]探讨不同浓度钇(Y(上标 3+))对铜绿微囊藻(Microcystis aeruginosa)生长特性的影响和藻细胞超微结构的变化。[方法]以铜绿微囊藻FACHB912为试材,采用生理和生化方法研究了不同浓度的外源稀土Y(上标 3+)(0、0.05、0.10、0.20、0.50、1.00、2.00、5.00和10. 00 mg/L)对藻细胞生长的影响,并比较了藻细胞叶绿素a、丙二醛(MDA)的含量及其超微结构随不同浓度Y(上标 3+)胁迫的变化。[结果]相对低浓度Y(上标 3+)(0.05~0.20 mg/L)对铜绿微囊藻生长表现出明显促进作用,而高浓度Y(上标 3+)(0.50~10.00 mg/L)则部分或完全抑制了藻细胞的正常生长;Y(上标 3+)对铜绿微囊藻的叶绿素a合成、MDA也有影响。叶绿素a随Y3+浓度的提高呈现先上升后下降的变化趋势;低浓度Y(上标 3+)(0.05~0.20 mg/L)对铜绿微囊藻MDA含量无显著影响,然而随着Y(上标 3+)浓度的增加和胁迫时间的延长,藻细胞中MDA含量显著上升。[结论]一定低浓度的Y(上标 3+)可有效促进铜绿微囊藻的生长和藻细胞叶绿素a等生理指标的上升。

English Abstract

[Objective] This paper aimed to discuss the influence of different concentrations of initial yttrium (Y(superscript 3+)) on the physiological and biochemical characteristics of Microcystis aeruginosa. [Method] Taking M. aeruginosa as the test material, some physiological and biochemical methods were used to study the impact of Y(superscript 3+) with various concentration (0, 0.05, 0.10, 0.20, 0.50, 1.00, 2.00, 5.00 and 10.00 mg/L, respectively) on the growth of M. aeruginosa. Also, the Chl-a, MDA content and ultrastructure changes in Y(superscript 3+) treated algaes were compared. [Result] Relatively low concentrations of Y(superscript 3+) (0.05-0.20 mg/L) had auxo-actions to the growth of M. aeruginosa, while a higher concentrations of Y(superscript 3+) (0.50-10.00 mg/L) could partly, even completely, inhibit the growth of M. aeruginosa. Comparing with the control, the Chl-a content was in the trendency of increasing firstly, and then it decreased when the initial Y(superscript 3+) concentrations increased from 0.05 to 5.00 mg/L. When the M. aeruginosa was exposed to Y(superscript 3+) concentration of 0.05-0.20 mg/L, the significant variation in the MDA content was not observed. However, it enhanced sharply when the Y(superscript 3+) concentration increased from 1.00 to 5.00 mg/L. [Conclusion] The rare earth Y(superscript 3+) at some content could effectively stimulate the growth of M. aeruginos and promote the rising of the physiological indexes such as Chl-a content in alga cells.

Topic Category 生物農學 > 農業
生物農學 > 森林
生物農學 > 畜牧
生物農學 > 漁業