Modelling the Balance of Metals in the Amended Soil for the Case of ‘Atmosphere–Plant–Soil’ System

2016 ◽  
Vol 21 (5) ◽  
pp. 577-590 ◽  
Author(s):  
Edita Baltrėnaitė ◽  
Arvydas Lietuvninkas ◽  
Pranas Baltrėnas
Keyword(s):  
Soil System ◽  
Plant Soil ◽  
Amended Soil

Distribution and migration of 95Zr in a tea plant/soil system

2006 ◽  
Vol 87 (2) ◽  
pp. 170-174 ◽  
Author(s):  
Jianjun Shi ◽  
Jiangfeng Guo
Keyword(s):  
Tea Plant ◽  
Soil System ◽  
Plant Soil ◽  
And Migration

scholarly journals The response of soil and phyllosphere microbial communities to repeated application of the fungicide iprodione: accelerated biodegradation or toxicity?

2020 ◽  
Vol 96 (6) ◽  
Author(s):  
A Katsoula ◽  
S Vasileiadis ◽  
M Sapountzi ◽  
Dimitrios G Karpouzas
Keyword(s):  
Microbial Communities ◽  
Agricultural Production ◽  
Soil Microorganisms ◽  
Amplicon Sequencing ◽  
Fungal Communities ◽  
Similar Response ◽  
Repeated Application ◽  
Plant Leaves ◽  
Soil System ◽  
Plant Soil

ABSTRACT Pesticides interact with microorganisms in various ways with the outcome being negative or positive for the soil microbiota. Pesticides' effects on soil microorganisms have been studied extensively in soil but not in other pesticides-exposed microbial habitats like the phyllosphere. We tested the hypothesis that soil and phyllosphere support distinct microbial communities, but exhibit a similar response (accelerated biodegradation or toxicity) to repeated exposure to the fungicide iprodione. Pepper plants received four repeated foliage or soil applications of iprodione, which accelerated its degradation in soil (DT50_1st = 1.23 and DT50_4th = 0.48 days) and on plant leaves (DT50_1st > 365 and DT50_4th = 5.95 days). The composition of the epiphytic and soil bacterial and fungal communities, determined by amplicon sequencing, was significantly altered by iprodione. The archaeal epiphytic and soil communities responded differently; the former showed no response to iprodione. Three iprodione-degrading Paenarthrobacter strains were isolated from soil and phyllosphere. They hydrolyzed iprodione to 3,5-dichloraniline via the formation of 3,5-dichlorophenyl-carboxiamide and 3,5-dichlorophenylurea-acetate, a pathway shared by other soil-derived arthrobacters implying a phylogenetic specialization in iprodione biotransformation. Our results suggest that iprodione-repeated application could affect soil and epiphytic microbial communities with implications for the homeostasis of the plant–soil system and agricultural production.

scholarly journals Interplay of Darwinian and frequency-dependent selection in the host-associated microbial population

2005 ◽  
Vol 3 (3) ◽  
pp. 3-11
Author(s):  
Nikolay I Vorobyov ◽  
Nikolay A Provorov
Keyword(s):  
Mathematical Simulation ◽  
Microbial Population ◽  
Genetically Modified ◽  
Ecological Niches ◽  
Soil System ◽  
Selection Pressures ◽  
Frequency Dependent ◽  
Frequency Dependent Selection ◽  
Plant Soil ◽  
Balanced Polymorphism

The method for mathematical simulation is suggested to analyze the balanced polymorphism in rhizobia population generated due to the interplay of Darwinian and frequency-dependent selection. Analysis of the model suggested that this polymorphism is determined not only by the selection pressures but also by the capacities of ecological niches occupied by bacteria in the «plant-soil» system. The model may be used for analyzing the selective processes in various symbiotic systems and for predicting the consequences of releasing of genetically modified plant symbionts into environment.

scholarly journals Soil properties determine the elevational patterns of base cations and micronutrients in plant-soil system up to the upper limits of trees and shrubs

2017 ◽  
Author(s):  
Ruzhen Wang ◽  
Xue Wang ◽  
Yong Jiang ◽  
Artemi Cerdà ◽  
Jinfei Yin ◽  
...  
Keyword(s):  
Soil Ph ◽  
Inorganic Nitrogen ◽  
Base Cations ◽  
Base Cation ◽  
Plant Tissues ◽  
Soil System ◽  
Plant Soil ◽  
Total Soil ◽  
Upper Limits ◽  
Trees And Shrubs

Abstract. To understand whether base cations and micronutrients in the plant-soil system change with elevation, we investigated the patterns of base cations and micronutrients in both soils and plant tissues along three elevational gradients and three different climate zones in China. Base cations of Ca, Mg and K and micronutrients of Fe, Mn and Zn were determined in soils, trees and shrubs growing at lower and middle elevations as well as at their upper limits on Balang (subtropical, SW China), Qilian (dry-temperate, NW China) and Changbai (wet-temperate, NE China) mountains. No consistent elevational patterns were found for base cation and micronutrient concentrations in both soils and plant tissues (leaves, roots, shoots and stem sapwood). Rather, soil pH, total soil nitrogen (TN), the soil organic carbon (SOC) to TN ratio (C:N), and total soil inorganic nitrogen (TIN) determined the elevational patterns of soil exchangeable Ca and Mg. Furthermore, multiple regression models showed that soil pH and C:N were pivotal factors affecting soil Fe, Mn and Zn availabilities. In return, soil base cation and micronutrient availabilities played fundamental roles in determining the base cation and micronutrient concentrations in plant tissues. Our results highlight the importance of soil physicochemical properties (mainly SOC, C:N and pH) rather than elevation (i.e., canopy cover and environmental factors, especially temperature), in determining base cation and micronutrient availabilities in soils and subsequently their concentrations in plant tissues.

Photoassimilated carbon allocation in a wheat plant-soil system as affected by soil fertility and land-use history

2014 ◽  
Vol 383 (1-2) ◽  
pp. 173-189 ◽  
Author(s):  
Saikat Chowdhury ◽  
Mark Farrell ◽  
Nanthi Bolan
Keyword(s):  
Land Use ◽  
Soil Fertility ◽  
Carbon Allocation ◽  
Wheat Plant ◽  
Land Use History ◽  
Soil System ◽  
Plant Soil
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