[Effects of Zanthoxylum bungeanum leaf extract on soil microbe quantity and enzyme activities].
In a pot experiment, the aqueous extract of 10 years old Zanthoxylum bungeanum's leaves was used to water Z. bungeanum seedlings to test its effects on soil microbes and enzyme activities. The results showed that the leaf extract decreased the total amount of microbes and the quantity of bacteria, fungi and actinomyces in rhizosphere soil, but increased the total amount of microbes in non-rhizosphere soil. After watering with the extract, the proteinase, invertase and acid phosphatase activities in rhizosphere soil were considerably lower than those in nonrhizosphere soil, while catalase and polyphenol oxidase activities were in adverse. Soil proteinase activity had a significant positive correlation with invertase activity, but a significant negative correlation with actinomyces amount. Soil polyphenol oxidase activity had a significant negative correlation with invertase activity, but a positive correlation with the total amount of microbes and the quantity of bacteria, fungi and actinomyces. Soil actinomyces only had significant correlations with proteinase, polyphenol oxidase and invertase activities and fungi.
Lü
Ke
K
Chengdu Institute of Biology, Chinese Academy of Sciences, Chengdu 610041, China. lu_ke@mails.gucas.ac.cn
Pan
Kaiwen
K
Wang
Jinchuang
J
Wan
Tao
T
D000135:Acid Phosphatase / Q000378:metabolism; D015169:Colony Count, Microbial; D010447:Peptide Hydrolases / Q000378:metabolism*; D010936:Plant Extracts / Q000494:pharmacology*; D018515:Plant Leaves / Q000737:chemistry*; D012987:Soil / Q000032:analysis; D012988:Soil Microbiology; D032106:Zanthoxylum / Q000737:chemistry*; D043324:beta-Fructofuranosidase / Q000378:metabolism
D010936:Plant Extracts; D012987:Soil; D000135:Acid Phosphatase; D043324:beta-Fructofuranosidase; D010447:Peptide Hydrolases