Laccase and tyrosinase activities in lichens
Laccase and tyrosinase activities in lichens
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地衣中的漆酶和酪氨酸酶活性
DOI：
10.1134/s0026261706050031
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发表时间：
2006
期刊：
影响因子：
1.5
通讯作者：
A. Zavarzin
中科院分区：
文献类型：
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作者：
A. Zavarzina;A. Zavarzin
酚氧化酶活性在地衣化子囊菌属于不同的分类群。结果表明，盾甲藻目（Peltigerales）的大多数表生和石生地衣同时具有漆酶和酪氨酸酶活性，而蜡蚧目（Lecanorales）的地衣仅具有漆酶活性，比盾甲藻目（Peltigerales）低一个数量级。水溶性酚氧化酶只存在于peltigerous地衣：活动，可以从完整的菌体洗出的10%，从破坏的菌体释放。当菌体快速复水时，含盾地衣的活性和可溶性酚氧化酶释放到培养基中的量增加。在一些地衣测试，酚氧化酶活性的刺激干燥-再水化循环。这些氧化酶可能在地衣酚类代谢中起重要作用，并参与原生土壤形成过程中腐殖质合成的生化反应，这可能是这些共生微生物的一种未知的地球化学功能。
Phenoloxidase activity was found in lichenized ascomycetes belonging to different taxonomic groups. Most of the epigeic and epilithic lichens of the orderPeltigeraleswere found to possess both laccase and tyrosinase activities; the lichens of the orderLecanoralespossessed only laccase activity, which was an order of magnitude lower than that ofPeltigerales. Water-soluble phenoloxidases were present only in peltigerous lichens: activity that could be washed out from intact thalli comprised 10% of that released from disrupted thalli. The activity of the peltigerous lichens and the release of soluble phenoloxidases into the medium increased when the thalli were rehydrated quickly. In some of the lichens tested, the phenoloxidase activity was stimulated by desiccation-rehydration cycles. The oxidases discovered may play an important role in the phenolic metabolism of lichens and be involved in the biochemical reaction of humus synthesis during primary soil formation, which may be a previously unknown geochemical function of these symbiotic microorganisms.
Isao Yoshimura：“使用任意固定文本进行离线作家识别”
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