Influences of cadmium on fine structure and metabolism of Hypnea musciformis (Rhodophyta, Gigartinales) cultivated in vitro

Bouzon Z.L.; Ferreira E.C.; dos Santos R.; Scherner F.; Horta P.A.; Maraschin M.; Schmidt é.C.

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Influences of cadmium on fine structure and metabolism of Hypnea musciformis (Rhodophyta, Gigartinales) cultivated in vitro

机译：镉对体外培养的Mushyformis（Rhodophyta，Gigartinales）细微结构和代谢的影响

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The in vitro effect of cadmium on apical segments of Hypnea musciformis was examined. Over a period of 7 days, the segments were cultivated with different concentrations of cadmium, ranging from 50 to 300 μM. The samples were processed for microscopic and histochemical analysis of growth rates, content of photosynthetic pigments, and photosynthetic performance. Cadmium treatments increased cell wall thickness and the accumulation of plastoglobuli. Destruction of chloroplast internal organization was observed. Compared to controls, algae exposed to cadmium showed growth rate reduction, depigmentation, and blending in the lateral branches. The content of photosynthetic pigments, including chlorophyll a and phycobiliproteins, decreased after exposure to different concentrations of cadmium. These results agree with the decreased photosynthetic performance and relative electron transport rate observed after exposure of algae to cadmium. Taken together, these findings strongly indicate that cadmium negatively affects the architecture and metabolism of the carragenophyte H. musciformis, thus posing a threat to the economic vitality of this red macroalgae.

机译：研究了镉对豚鼠呼吸末梢的体外作用。在7天的时间里，这些段用不同浓度的50至300μM的镉进行培养。对样品进行处理以进行生长速率，光合色素含量和光合性能的显微和组织化学分析。镉处理增加了细胞壁的厚度和质体球的积累。观察到叶绿体内部组织的破坏。与对照相比，暴露于镉的藻类显示出生长速率降低，色素沉着和侧枝混合。暴露于不同浓度的镉后，包括叶绿素a和藻胆蛋白在内的光合色素含量降低。这些结果与藻类暴露于镉后观察到的光合作用性能降低和相对电子传输速率一致。综上所述，这些发现强烈表明镉对角叉菜角叉菜H. musciformis的结构和代谢产生负面影响，从而对该红色大型藻类的经济活力构成威胁。

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《Protoplasma: An International Journal of Cell Biology》 |2012年第3期|共14页
作者
Bouzon Z.L.; Ferreira E.C.; dos Santos R.; Scherner F.; Horta P.A.; Maraschin M.; Schmidt é.C.;
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正文语种 eng
中图分类细胞形态学;
关键词
Cadmium; Growth rates; Heavy metal; Hypneamusciformis; Photosynthetic performance; Photosynthetic pigments; Ultrastructure;

机译：镉;生长速率;重金属;豚鼠呼吸;光合性能;光合色素;超微结构;

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1. Influences of cadmium on fine structure and metabolism of Hypnea musciformis (Rhodophyta, Gigartinales) cultivated in vitro [J] . Zenilda L. Bouzon, Eduardo C. Ferreira, Rodrigo dos Santos, Protoplasma . 2012,第3期

机译：镉对体外培养的Mushyformis（Rhodophyta，Gigartinales）细微结构和代谢的影响
2. Ensaio in vitro da enzima nitrato redutase e efeito da disponibilidade de nitrato e fosfato em variantes pigmentares de Hypnea musciformis (Wulfen) J. V. Lamour. (Gigartinales, Rhodophyta) [J] . Martins Aline P., Chow Fungyi, Yokoya Nair S. Revista brasileira de botanica . 2009,第4期

机译：J. V. Lamour的《 Hypernea musciformis（Wulfen）色素变体》中硝酸盐还原酶的体外测定以及硝酸盐和磷酸盐的有效性。（Gigartinales，红藻）
3. Fine chemical structure of carrageenan from the commercially cultivated Kappaphycus striatum (sacol variety) (Solieriaceae, Gigartinales, Rhodophyta) [J] . Villanueva RD., Montano MNE. Journal of phycology . 2003,第3期

机译：商业化养殖的Kappaphycus striatum（sacol品种）（茄科，Gigartinales，Rhodophyta）的角叉菜胶的精细化学结构
4. Seasonal occurrences of epiphytic algae on the commercially cultivated red alga Kappaphycus alvarezii (Solieriaceae, Gigartinales, Rhodophyta) [C] . Charles S. Vairappan International Seaweed Symposium . 2007

机译：商业栽培红藻藻藻藻（Soliaceae，Gigartinales，菱托氏菌）季节性发生季节性发生
5. Investigating the influence of cadmium stress on glutathione metabolism utilizing mutant and transgenic Arabidopsis plants. [D] . Peterson, Annita Gatherum. 2004

机译：利用突变和转基因拟南芥植物研究镉胁迫对谷胱甘肽代谢的影响。
6. Effects of Seawater Salinity and Temperature on Growth and Pigment Contents in Hypnea cervicornis J. Agardh (Gigartinales, Rhodophyta) [O] . Lanping Ding, Yuanyuan Ma, Bingxin Huang, 2006

机译：海水盐度和温度对短促呼吸的生长和色素含量的影响J. Agardh（Gigartinales，红藻）
7. Ensaio in vitro da enzima nitrato redutase e efeito da disponibilidade de nitrato e fosfato em variantes pigmentares de Hypnea musciformis (Wulfen) J. V. Lamour. (Gigartinales, Rhodophyta) In vitro assay of nitrate reductase enzyme and effect of nitrate and phosphate availability in colour strains of Hypnea musciformis (Wulfen) J. V. Lamour. (Gigartinales, Rhodophyta) [O] . Aline P. Martins, Fungyi Chow, Nair S. Yokoya 2009

机译：J.V. Lamour的《 Mushyformnea musciformis（Wulfen）色素变体》中硝酸盐还原酶的体外测定以及硝酸盐和磷酸盐的有效性（Gigartinales，Rhodophyta）硝酸盐还原酶的体外测定以及Muspnea musciformis（Wulfen）J. V. Lamour色菌株中硝酸盐和磷酸盐可用性的影响。（Gigartinales，红藻）

Influences of cadmium on fine structure and metabolism of Hypnea musciformis (Rhodophyta, Gigartinales) cultivated in vitro

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