微生物海洋学实验室目前有7名教师,其中3名教授,4名副教授,以及1名博士后。实验室主要研究方向涉及:
1)海洋微生物驱动的生物地球化学过程(包括微生物在海洋环境中的时空分布格局及环境响应,海洋微生物在碳循环、氮循环、硫循环中的作用等);
2)海洋微生物的分离鉴定及资源开发(包括海洋微生物分离培养新技术的建立、新物种的分类鉴定、菌种库建设以及酶资源开发等)。
近年来的主要研究成果包括:
1)首次发现海洋细菌能够合成“冷室气体”DMS的前体物质DMSP,解析了细菌合成DMSP的通路,并揭示了超深渊细菌可利用二甲基丙酸内盐(DMSP)抵抗高静水压力,指出异养细菌是深渊海水和沉积物中DMSP的重要生产者;
2)发现了海洋细菌中广泛存在的一种新型DMS产生酶MddH,证实硫化氢和甲硫醇的甲基化是海洋DMS的重要来源之一,此外还发现了海洋细菌及浮游藻类中的一种新型双结构域的DMSP合成酶DsyGD;
3)揭示了马里亚纳海沟深渊环境中不同细菌类群的特殊代谢机制,包括发现烃类降解菌在马里亚纳海沟底层水出现勃发,指出烷烃可能是万米水体微生物的重要“燃料”;发现深渊海沟水体中的氨氧化古菌可活跃参与氨氧化和碳固定,并演化出特殊的生存机制以适应深渊极端环境;揭示了深渊拟杆菌类群的特殊多糖降解机制;
4)揭示了近海底栖生境微生物的群落构建机制,提出了群落构建过程影响物种互作模式的新观点。
以上科学发现获得了领域内专家的一致认可,相关研究成果分别发表于顶级杂志Nature Microbiol (共三篇)、Nature Commun、ISME J、Microbiome(共四篇)等。
国家自然科学基金重点项目1项
国家自然科学基金委重大研究计划重点支持项目1项
国家自然科学基金委重大研究计划集成项目1项
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国家自然科学基金面上项目6项及青年项目2项
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