多种金属离子对一株双齿相手蟹肠道共生真菌生长代谢影响的研究

Study on the Relation between Several Metal Ions and the Growth Metabolism of a Symbiotic Fungus of Sesarma bidens

对一株双齿相手蟹肠道共生真菌Sporothrix sp.(ZJSEF-7),测定了12种金属离子对该菌生长代谢的影响。结果表明,Fe3+、K+、Mn2+、Mg2+、Ca2+和Sb3+可明显促进菌体的生长;Cu2+、Sn2+和Pb2+对菌体生长没有明显的影响;Fe2+对菌体生长有强的抑制作用;Al3+和Zn2+完全抑制菌体生长。相手蟹共生菌对部分重金属显示了一定的抗性和强的化学防御功能,深入研究其作用机制,将有助于了解相手蟹共生菌的生物学本质及其生态学作用,对于保护红树林生态环境具有重要的意义。

The relation between twelve metal ions and the growth metabolism of the symbiotic fungus Sporothrix sp. （ZJSEF - 7 ） was investigaed. The result showed that Fe^3 ＋ , K^＋ , Mn^2＋ , Mg^2＋ , Ca^2＋ and Sb^3＋ could obviously accelerate the growth of the fungus, Cu^2＋ , Sn^2＋ and Pb^2＋ didnt influence the growth of the fungus, Fe^2＋ could strongly inhibit the growth completely inhibit the growth of the chemical defence of several metal ecological role of the symbiotic entironment. fungus. The symbiotic fungus ions. The work could help fungus of Sesarma bidens, and it of the fungus, Al^3＋ and Zn^2＋ could showed moderate resistance and strong to explore the biological nature and was important for protecting mangrove entironment.