The growth of the microscopic fungi on the solid surface has a great influence on technical materials destruction. The aim of this study was to determine the influence of two strains of micromycetesPenicillium palitan...The growth of the microscopic fungi on the solid surface has a great influence on technical materials destruction. The aim of this study was to determine the influence of two strains of micromycetesPenicillium palitansstrain6 andArthrinium phaeospermumstrain 10 on morphological and structural properties of carbon steel surfaces in the nutrient medium. The difference in consumption of chlorine byP. palitans6(0.07 wt%) andA. phaeospermum10(0.04 wt%) and the difference in accumulation of a newly formed elementmanganese forP. palitans6(0.01 wt%) andA. phaeospermum10(0.03 wt%) has been observed. A relation between the surface and interface fungal stimulated processes, the biotic oxidation of steel surface as well as formation of the mixed oxides on the biomodified steel surface has been determined. The morphology of surfaces was characterized by scanning electron microscopy, the structure—by the X-ray diffraction method, Fourier transformation infrared and X-ray fluorescence spectroscopy.展开更多
Despite the essential role of micronutrients in plant metabolic processes and carbon cycle,the mechanisms by which micronutrients regulate plant community traits remain poorly understood.Here,we used a long-term exper...Despite the essential role of micronutrients in plant metabolic processes and carbon cycle,the mechanisms by which micronutrients regulate plant community traits remain poorly understood.Here,we used a long-term experiment to explore the potential mechanisms of plant community micronutrients and traits along a precipitation gradient.Our results showed that plants shifted toward lateral growth and asexual reproduction over time.From 1985 to 2022,the plant community Fe content increased by 18.8%in the north but declined by 25.2%in the south of the typical steppe.Furthermore,plant community growth and reproduction were sensitive to both micronutrient contents and uptake efficiencies in the north of the typical steppe.While plant community Mn and Zn contents enhanced growth longitudinally,Zn and Fe uptake efficiencies hindered sexual reproduction.Furthermore,soil moisture and GDP per capita were the key drivers of micronutrient variation in the north and south of the typical steppe,respectively.Precipitation fluctuations primarily regulated community traits across all sites.In the arid site,micronutrient-driven shifts in reproduction stabilized the soil carbon stock by balancing biomass allocation.These findings can help us to better understand the coupling of plant micronutrients,traits,and soil carbon stocks,thereby providing the basis for a scientific grassland conservation strategy under global change scenarios.展开更多
文摘The growth of the microscopic fungi on the solid surface has a great influence on technical materials destruction. The aim of this study was to determine the influence of two strains of micromycetesPenicillium palitansstrain6 andArthrinium phaeospermumstrain 10 on morphological and structural properties of carbon steel surfaces in the nutrient medium. The difference in consumption of chlorine byP. palitans6(0.07 wt%) andA. phaeospermum10(0.04 wt%) and the difference in accumulation of a newly formed elementmanganese forP. palitans6(0.01 wt%) andA. phaeospermum10(0.03 wt%) has been observed. A relation between the surface and interface fungal stimulated processes, the biotic oxidation of steel surface as well as formation of the mixed oxides on the biomodified steel surface has been determined. The morphology of surfaces was characterized by scanning electron microscopy, the structure—by the X-ray diffraction method, Fourier transformation infrared and X-ray fluorescence spectroscopy.
基金funded by the Program of National Science and Technology Assistance,China(KY202002011)the Innovative Research Team of Ministry of Education,China(IRT_17R50)+1 种基金the Key Research and Development Program of Forestry and Grassland Administration of Ningxia Autonomous Region,China(20NXLCZD01)the Technological Support for Grassland Ecological Management and Lanzhou City’s Scientific Research Funding Subsidy to Lanzhou University,China。
文摘Despite the essential role of micronutrients in plant metabolic processes and carbon cycle,the mechanisms by which micronutrients regulate plant community traits remain poorly understood.Here,we used a long-term experiment to explore the potential mechanisms of plant community micronutrients and traits along a precipitation gradient.Our results showed that plants shifted toward lateral growth and asexual reproduction over time.From 1985 to 2022,the plant community Fe content increased by 18.8%in the north but declined by 25.2%in the south of the typical steppe.Furthermore,plant community growth and reproduction were sensitive to both micronutrient contents and uptake efficiencies in the north of the typical steppe.While plant community Mn and Zn contents enhanced growth longitudinally,Zn and Fe uptake efficiencies hindered sexual reproduction.Furthermore,soil moisture and GDP per capita were the key drivers of micronutrient variation in the north and south of the typical steppe,respectively.Precipitation fluctuations primarily regulated community traits across all sites.In the arid site,micronutrient-driven shifts in reproduction stabilized the soil carbon stock by balancing biomass allocation.These findings can help us to better understand the coupling of plant micronutrients,traits,and soil carbon stocks,thereby providing the basis for a scientific grassland conservation strategy under global change scenarios.
