摘要
古菌一直被冠以嗜极端环境的特征,直到最近十几年,由于分子生物学技术的发展,越来越多的证据表明,在许多非极端环境,包括海洋、湖泊和土壤中,分布着一类特殊的古菌—非嗜热泉古菌(non-thermophilic Crenarchaeota)。该类古菌不仅分布广泛,而且数量巨大。通过16S rRNA基因序列分析发现,中温泉古菌可能参与到全球碳、氮等生物地球化学循环,预示着其在整个生态系统中起着重要的作用。从古菌分类着手,阐述了中温泉古菌在土壤中的分布和数量特征、影响因素,进而对其在氮和碳循环过程中的潜在作用进行了简要介绍,并提出了今后的研究重点。
Archaea have long been recognized as the microorganisms of extreme environments. With the rapid development of molecular biological techniques and their applications to the archaeal community studies, non-thermophilic Crenarchaeota are found widely distributing in moderate environments, such as marine, lakes and soils. Based on the analysis of archaeal 16S rRNA genes, the broad distribution and rich abundance of the non-thermophilic Crenarchaeota may contribute to the carbon and nitrogen cycles, indicating their potential roles in the global energy cycles. This paper reviewed the distribution and abundance of the non-thermophilie Crenarchaeota in soil ecosystems, introduced their ecological functions in soil carbon and nitrogen cycles, and foresaw the perspectives in the research field.
出处
《生态学报》
CAS
CSCD
北大核心
2009年第9期5047-5055,共9页
Acta Ecologica Sinica
基金
国家自然科学基金资助项目(40871129
40701087)
关键词
古菌
中温泉古菌
多样性
丰度
土壤环境
Arehaea
non-thermophilic Crenarchaeota
diversity
abundance
soil habitat
