Net microbial amino sugar accumulation process in soil as influenced by different plant material inputs

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	Net microbial amino sugar accumulation process in soil as influenced by different plant material inputs
	Liang, C ; Zhang, XD ; Balser, TC
刊名	BIOLOGY AND FERTILITY OF SOILS
	2007
卷号	44 期号:1 页码:1-7
关键词	amino sugar organic material microbial accumulation soil
ISSN号	0178-2762
通讯作者	Zhang, XD, Chinese Acad Sci, Inst Appl Ecol, Key Lab Terr Ecol Proc, Shenyang 110016, Peoples R China
中文摘要	Identifying the impact of plant material inputs on soil amino sugar synthesis may advance our knowledge of microbial transformation processes in soils. In a 12-week laboratory microcosm incubation, 1, 2, 4, and 6% (w/w) soybean leaf or maize stalk were initially added to soil, respectively, whereas soil without plant addition was used as a control. The results showed that adding organic materials to the soil led to a net accumulation of amino sugars, because of greater microbial synthesis. The ratios of glucosamine to galactosamine and of glucosamine to muramic acid, two indicators differentiating the relative contribution to soil organic matter of fungi and bacteria, showed substantial variance across the gradient of substrate addition. Our results suggest that the amount of nutrients in a given substrate is the primary attribute determining microbial net accumulation of soil amino sugars, especially in the relatively short term, whereas the composition of nutrients might be more important in the relatively long term when nutrients are not sufficient. The use of the two ratios (glucosamine to galactosamine and glucosamine to muramic acid) reflects different dynamics of galactosamine and muramic acid during the decomposition of organic substrates in soils. Muramic acid, compared with galactosamine, is more likely to accumulate in the soil active organic fraction under abundant nutrient conditions, whereas it would be decomposed along with active organic matter when the nutrients are scarce and remain in minor quantities in the clay fraction without being attacked by microbes.
学科主题	Soil Science
收录类别	SCI
语种	英语
WOS记录号	WOS:000249617700001
公开日期	2011-09-23
内容类型	期刊论文
源URL	[http://210.72.129.5/handle/321005/54625]
专题	沈阳应用生态研究所_沈阳应用生态研究所_期刊论文
推荐引用方式 GB/T 7714	Liang, C,Zhang, XD,Balser, TC. Net microbial amino sugar accumulation process in soil as influenced by different plant material inputs[J]. BIOLOGY AND FERTILITY OF SOILS,2007,44(1):1-7.
APA	Liang, C,Zhang, XD,&Balser, TC.(2007).Net microbial amino sugar accumulation process in soil as influenced by different plant material inputs.BIOLOGY AND FERTILITY OF SOILS,44(1),1-7.
MLA	Liang, C,et al."Net microbial amino sugar accumulation process in soil as influenced by different plant material inputs".BIOLOGY AND FERTILITY OF SOILS 44.1(2007):1-7.