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| 培养条件下发菜的形态建成 | |
| 引用本文： | 赵学敏,毕永红,周广杰,胡征宇.培养条件下发菜的形态建成[J].水生生物学报,2010,34(2):323. |
| 作者姓名： | 赵学敏 毕永红 周广杰 胡征宇 |
| 作者单位： | 1. 中国科学院水生生物研究所,武汉,430072;华南环境科学研究所环境保护部,广州,510655 2. 中国科学院水生生物研究所,武汉,430072 3. 华南环境科学研究所环境保护部,广州,510655 |
| 基金项目： | 湖北省自然科学基金，中国科学院重点项目 |
| 摘 要： | 固体培养基培养的发菜(Nostoc flagelliforme)在黑暗与低光强(1μmol/m2·s)条件下细胞发育受到抑制,在光强10、20、30、60μmol/m2·s条件下细胞生长良好,但在60μmol/m2·s条件下藻丝体易变黄;液体充气培养的发菜在光强20、60、180μmol/m2·s条件下生长速率、类胡萝卜素与多糖含量均随光强升高而增加。发菜在低营养水平时形成的异形胞较多,异形胞的发生位置也多样,有端生、间生和连生。当琼脂浓度为0.5%—4%时发菜具有相同的形态发育特征,从藻殖段发育至丝状聚集体状态,再从聚集体中释放藻丝;当琼脂浓度为6%—8%时发菜发育至丝状聚集体状态,藻丝包裹在厚胶鞘中,观察不到藻丝和藻殖段的释放。以上结果表明光照和培养基的含水量对发菜细胞发育具有重要影响。 |
| 关 键 词： | 蓝藻 发菜 异形胞 藻殖段 |
THE MORPHOGENESIS OF NOSTOC FLAGELLIFORME UNDER CULTURE CONDITIONS |
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| ZHAO Xue-Min,BI Yong-Hong,ZHOU Guang-Jie,HU Zheng-Yu.THE MORPHOGENESIS OF NOSTOC FLAGELLIFORME UNDER CULTURE CONDITIONS[J].Acta Hydrobiologica Sinica,2010,34(2):323. | |
| Authors: | ZHAO Xue-Min BI Yong-Hong ZHOU Guang-Jie HU Zheng-Yu |
| Institution: | ZHAO Xue-Min1,2,BI Yong-Hong1,ZHOU Guang-Jie3 , HU Zheng-Yu1 (1. Institute of Hydrobiology,Chinese Academy of Sciences,Wuhan 430072,2. Ministry of Environmental Protection,South China Institute of Environmental Science,Guangzhou 510655,3. Guangdong Academy of Environmental Science,Guangzhou 510045) |
| Abstract: | Many studies were about the morphological development of Nostoc flagelliforme with the improvement of techniques of cultivation. Although the effects of the combination of temperature and illumination, nitrogen sources on development of N. flagelliforme have been described by many investigators, the effects of many environmental factors on developmental cycle of N. flagelliforme have not been studied. In the present investigation, the effects of different light intensity, nutrition and agar concentration on... |
| Keywords: | Cyanobacterium Nostoc flagelliforme Heterocyst Hormogonia |
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