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Removal of invasive plant species is the first step to restoring the invaded ecosystems. The soil microbial biomass and extracellular enzyme activities were measured in Moso bamboo () pure forest (completely invasion), invasive removal forest (secondary succession 5 years after clear cutting), and the evergreen broadleaved forest (no invasion) in Tianmu Mountain. The results showed that compared with pure forest, invasive removal significantly increased the contents of soil organic carbon (SOC), nitrate nitrogen, available phosphorus and potassium, as well as microbial biomass carbon (MBC) and microbial biomass phosphorus (MBP), while significantly decreased microbial biomass nitrogen (MBN). The activities of α-glucosidase (AG), β-glucosidase (BG), leucine aminopeptidase (LAP) and phenol oxidase (POX) in the forest with removal of invasive were significantly higher than those in pure forest, while invasive removal did not change the activities of cellodisaccharide hydrolase (CBH), β-N-acetyl-glucosaminopeptidase (NAG), acid phosphatase (ACP) and peroxidase (PER). Furthermore, the activities of AG, BG and LAP were positively correlated with SOC and MBC, while the increase in POX activity was positively correlated with soil nitrate content. In addition, MBC, MBN and MBP, and activities of AG, BG, NAG, LAP and ACP in removal forest forest were significantly higher than those in evergreen broadleaved forests. Taken together, the removal of invasive could increase soil nutrient contents, microbial biomass and extracellular enzyme activities, thus could be considered as an effective way to restore the invaded forests. Our results provide important theoretical basis for controlling invasion in subtropical forests.
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http://dx.doi.org/10.13287/j.1001-9332.202205.015 | DOI Listing |
Bioresour Bioprocess
December 2024
Department of Chemical and Biomolecular Engineering, National University of Singapore, Singapore, Singapore.
Palm kernel meal (PKM) presents a challenge for non-ruminant livestock feeding due to its high fibre content predominantly in the form of mannan. Microbial fermentation offers a sustainable solution for fibre hydrolysis in lignocellulosic biomass. In this study, a Bacillus subtilis strain (F6), with high mannanase secretion capability, was isolated from the environment.
View Article and Find Full Text PDFACS Synth Biol
December 2024
Key Laboratory of Carbohydrate Chemistry and Biotechnology of Ministry of Education, School of Life Sciences and Health Engineering, Jiangnan University, Wuxi 214122, PR China.
Industrial biotechnology employs cells for producing valuable products and serving as biocatalysts sustainably, addressing resource, energy, and environmental issues. is a preferred host for creating microbial chassis cells and producing industrial enzymes and functional nutritional products. In this study, a dual-module T7 integration expression system in was established.
View Article and Find Full Text PDFSci Total Environ
December 2024
Division of Environmental Physics, Faculty of Mathematics, Physics and Informatics, Comenius University, 842 48 Bratislava, Slovakia.
Cold atmospheric plasma has recently gained much attention due to its antimicrobial effects. Among others, plasma has proven its potential to combat microbial biofilms. Yet, knowledge of complex network interactions between individual microbial species in natural infection environments of the biofilm as well as plasma-biofilm inactivation pathways is limited.
View Article and Find Full Text PDFEcol Evol
December 2024
Collaborative Innovation Center of Recovery and Reconstruction of Degraded Ecosystem in Wanjiang Basin co-Founded by Anhui Province and Ministry of Education, School of Ecology and Environment Anhui Normal University Wuhu China.
Investigating responses of soil greenhouse gas (GHG) emissions to vegetation restoration is important for global warming mitigation. On the Loess Plateau, a wide range of vegetation restoration strategies have been implemented to control land degradation. However, the thorough quantification of soil GHG emissions triggered by different modes of vegetation restoration is insufficient.
View Article and Find Full Text PDFBMC Microbiol
December 2024
School of Life Science, Yunnan Normal University, Kunming, 650500, China.
Background: As an important prokaryotic model organism, Bacillus subtilis has been widely used in the industrial production of a variety of target products. The efficient secretion of target products has always been the main purpose of industrial microbial technology. The modification of gene regulatory networks is an important technical means to construct a factory of microbial cells that efficiently secretes target products.
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