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首页> 外文期刊>Revista Brasileira de Farmacognosia >Effects of nitrate and phosphate availabilities on growth, photosynthesis and pigment and protein contents in colour strains of Hypnea musciformis (Wulfen in Jacqu.) J.V. Lamour. (Gigartinales, Rhodophyta)
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Effects of nitrate and phosphate availabilities on growth, photosynthesis and pigment and protein contents in colour strains of Hypnea musciformis (Wulfen in Jacqu.) J.V. Lamour. (Gigartinales, Rhodophyta)

机译：硝酸盐和磷酸盐的有效性对Mushyformis musciformis（Wulfen in Jacqu。）色菌株生长，光合作用以及色素和蛋白质含量的影响。 （Gigartinales，红藻）

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In Brazil, Hypnea musciformis is the main raw material for carrageenan production and the knowledge of nitrogen and phosphorus metabolism in algae is critical for the success of cultivation because these elements can limit seaweed productivity. Thus, the objective of this study was to evaluate the effects of nitrate (zero to 100 μM) and nitrate plus phosphate (zero to 25 μM) availabilities on the growth, the contents of photosynthetic pigments (phycobiliproteins and chlorophyll a) and proteins, and the photosynthesis and respiration of the brown (BR) and light green (LG) strains of H. musciformis. The results revealed metabolic differences between the colour strains of H. musciformis for nitrogen metabolism: upon nitrate addition, the LG strain stored nitrogen mainly as proteins, while the BR strain stored it as proteins and pigments. Moreover, the respiration of the LG strain and the photosynthesis of the BR strain increased with nitrate concentrations, indicating that the BR strain fixed more photosynthetic carbon than the LG strain.
机译：在巴西，Mypnea musciformis是生产角叉菜胶的主要原料，藻类中的氮和磷代谢知识对于成功栽培至关重要，因为这些元素会限制海藻的生产力。因此，本研究的目的是评估硝酸盐（0至100μM）和硝酸盐加磷酸盐（0至25μM）对生长，光合色素（藻胆蛋白和叶绿素a）和蛋白质含量的影响，以及棕色拟南芥菌株（BR）和浅绿色（LG）的光合作用和呼吸作用。结果揭示了用于氮代谢的穆氏嗜血菌颜色菌株之间的代谢差异：添加硝酸盐后，LG菌株主要以蛋白质形式存储氮，而BR菌株以蛋白质和色素形式存储氮。此外，LG菌株的呼吸作用和BR菌株的光合作用随硝酸盐浓度的增加而增加，这表明BR菌株比LG菌株固定更多的光合碳。

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