Physiology and microbial community structure in soil at extreme water content
摘要:
A sandy loam soil was brought to 6 water contents (13–100 % WHC) to study the effects of extreme soil moistures on the physiological status of microbiota (represented by biomass characteristics, specific respiration, bacterial growth, and phospholipid fatty acid, PLFA, stress indicators) and microbial community structure (assessed using PLFA fingerprints). In dry soils, microbial biomass and activity declined as a consequence of water and/or nutrient deficiency (indicated by PLFA stress indicators). These microbial communities were dominated by G + bacteria and actinomycetes. Oxygen deficits in water-saturated soils did not eliminate microbial activity but the enormous accumulation of poly-3-hydroxybutyrate by bacteria showed the unbalanced growth in excess carbon conditions. High soil water content favored G bacteria.
展开
关键词:
privacion del agua humidite facteur du milieu carbono nitrogen anoxia water deprivation bacterie gram positif thymidine timidina
DOI:
10.1007/BF02931466
被引量:
年份:
2005
通过文献互助平台发起求助,成功后即可免费获取论文全文。
相似文献
参考文献
引证文献
辅助模式
引用
文献可以批量引用啦~
欢迎点我试用!