Scherer Siegfried, Chen Ting-Wei, Böger Peter
Lehrstuhl für Physiologie und Biochemic der Pflanzen, Universität Konstanz, D-7750, Konstanz, Federal Republic of Germany.
Soils and Fertilizer Institute, Chinese Academy of Agricultural Sciences, 100081, Beijing, Peoples Republic of China.
Oecologia. 1986 Mar;68(4):585-588. doi: 10.1007/BF00378775.
The response of Nostoc commune and Nostoc flagelliforme (terrestrial blue-green algae), grown in their natural habitat, towards rewetting after prolonged drought periods (2 weeds up to five years) has been investigated. In Nostoc flagelliforme, the energy charge (EC) about 0.18 in dry condition increases rapidly (EC=0.7 after 1 h) and more slowly in a second phase (EC=0.8 after 6 h). The total content of AXP (=ATP+ADP+AMP) apparently increases due to de novo synthesis of adenine nucleotides. ATP-build-up after a drought period is probably provided by oxidative phosphorylation. It has been found to be about the same, regardless of whether the foregoing drought period had been extended over 6 months or 5 years.Dry samples of colony mats of N. commune exhibit very low ATP-, but high ADP-contents. Within 6 h after rewetting, the final level of extractable ATP (60-100 nmol/mg chlorophyll) is recovered.
对生长在自然栖息地的普通念珠藻和发菜（陆生蓝藻）在长期干旱期（2周至5年）后复水的反应进行了研究。在发菜中，干燥状态下能量电荷（EC）约为0.18，复水后迅速增加（1小时后EC = 0.7），第二阶段增加较慢（6小时后EC = 0.8）。AXP（=ATP+ADP+AMP）的总含量显然因腺嘌呤核苷酸的从头合成而增加。干旱期后ATP的积累可能由氧化磷酸化提供。已发现无论之前的干旱期是延长6个月还是5年，其积累量大致相同。普通念珠藻菌落垫的干燥样本显示ATP含量非常低，但ADP含量高。复水后6小时内，可提取ATP的最终水平（60 - 100 nmol/mg叶绿素）得以恢复。
