Metal Availability, Uptake, Transport and Accumulation in Plants

2004 ◽  
pp. 1-27 ◽  
Author(s):  
Maria Greger
Keyword(s):  
Metal Availability

scholarly journals Copper Availability Influences the Transcriptomic Response of Candida albicans to Fluconazole Stress

2021 ◽  
Vol 11 (4) ◽  
Author(s):  
Elizabeth W Hunsaker ◽  
Chen-Hsin Albert Yu ◽  
Katherine J Franz
Keyword(s):  
Candida Albicans ◽  
Time Course ◽  
Transcriptional Response ◽  
Metal Homeostasis ◽  
Metal Availability ◽  
Drug Induced ◽  
Transcriptomic Response ◽  
Opportunistic Fungal Pathogen ◽  
Whole Transcriptome Analysis ◽  
Whole Transcriptome

Abstract The ability of pathogens to maintain homeostatic levels of essential biometals is known to be important for survival and virulence in a host, which itself regulates metal availability as part of its response to infection. Given this importance of metal homeostasis, we sought to address how the availability of copper in particular impacts the response of the opportunistic fungal pathogen Candida albicans to treatment with the antifungal drug fluconazole. The present study reports whole transcriptome analysis via time-course RNA-seq of C. albicans cells exposed to fluconazole with and without 10 µM supplemental CuSO4 added to the growth medium. The results show widespread impacts of small changes in Cu availability on the transcriptional response of C. albicans to fluconazole. Of the 2359 genes that were differentially expressed under conditions of cotreatment, 50% were found to be driven uniquely by exposure to both Cu and fluconazole. The breadth of metabolic processes that were affected by cotreatment illuminates a fundamental intersectionality between Cu metabolism and fungal response to drug stress. More generally, these results show that seemingly minor fluctuations in Cu availability are sufficient to shift cells’ transcriptional response to drug stress. Ultimately, the findings may inform the development of new strategies that capitalize on drug-induced vulnerabilities in metal homeostasis pathways.

scholarly journals Perchlorate and Agriculture on Mars

Soil Systems ◽  
2021 ◽  
Vol 5 (3) ◽  
pp. 37
Author(s):  
Christopher Oze ◽  
Joshua Beisel ◽  
Edward Dabsys ◽  
Jacqueline Dall ◽  
Gretchen North ◽  
...  
Keyword(s):  
Plant Growth ◽  
Soil Column ◽  
Metal Availability ◽  
Metal Release ◽  
High Solubility ◽  
Plant Life ◽  
Growing Medium ◽  
Successful Removal ◽  
Flow Through ◽  
Martian Regolith

Perchlorate (ClO4−) is globally enriched in Martian regolith at levels commonly toxic to plants. Consequently, perchlorate in Martian regolith presents an obstacle to developing agriculture on Mars. Here, we assess the effect of perchlorate at different concentrations on plant growth and germination, as well as metal release in a simulated Gusev Crater regolith and generic potting soil. The presence of perchlorate was uniformly detrimental to plant growth regardless of growing medium. Plants in potting soil were able to germinate in 1 wt.% perchlorate; however, these plants showed restricted growth and decreased leaf area and biomass. Some plants were able to germinate in regolith simulant without perchlorate; however, they showed reduced growth. In Martian regolith simulant, the presence of perchlorate prevented germination across all plant treatments. Soil column flow-through experiments of perchlorate-containing Martian regolith simulant and potting soil were unable to completely remove perchlorate despite its high solubility. Additionally, perchlorate present in the simulant increased metal/phosphorous release, which may also affect plant growth and biochemistry. Our results support that perchlorate may modify metal availability to such an extent that, even with the successful removal of perchlorate, Martian regolith may continue to be toxic to plant life. Overall, our study demonstrates that the presence of perchlorate in Martian regolith provides a significant challenge in its use as an agricultural substrate and that further steps, such as restricted metal availability and nutrient enrichment, are necessary to make it a viable growing substrate.

Trace Metal Availability and Soil Quality Index Relationships under Different Land Uses

2015 ◽  
Vol 79 (6) ◽  
pp. 1629-1637 ◽  
Author(s):  
Vladimir Ivezić ◽  
Bal Ram Singh ◽  
Vlatka Gvozdić ◽  
Zdenko Lončarić
Keyword(s):  
Trace Metal ◽  
Soil Quality ◽  
Quality Index ◽  
Metal Availability ◽  
Land Uses ◽  
Soil Quality Index

Metal availability, soil nutrient, and enzyme activity in response to application of organic amendments in Cd-contaminated soil

2017 ◽  
Vol 25 (3) ◽  
pp. 2425-2435 ◽  
Author(s):  
Zhanbiao Yang ◽  
Lixia Liu ◽  
Yanfeng Lv ◽  
Zhang Cheng ◽  
Xiaoxun Xu ◽  
...  
Keyword(s):  
Enzyme Activity ◽  
Contaminated Soil ◽  
Organic Amendments ◽  
Soil Nutrient ◽  
Metal Availability

scholarly journals Electrochemical attributes and availability of nutrients, toxic elements, and heavy metals in tropical soils

2006 ◽  
Vol 63 (6) ◽  
pp. 589-608 ◽  
Author(s):  
Mauricio Paulo Ferreira Fontes ◽  
Luís Reynaldo Ferracciú Alleoni
Keyword(s):  
Heavy Metals ◽  
Electrochemical Properties ◽  
Toxic Elements ◽  
Chemical Speciation ◽  
Surface Complexation ◽  
Tropical Soils ◽  
Metal Availability ◽  
Ionic Exchange ◽  
Weathered Soils ◽  
Highly Weathered Soils

Electrochemical properties of soils are very important for the understanding of the physico-chemical phenomena which affect soil fertility and the availability of nutrients for plants. This review highlights the electrochemical properties of tropical soils, the behavior and the availability of nutrients, toxic elements and heavy metals in the soil, especially for soils with predominant variable charge minerals. Availability of the elements is related to ionic exchange, solution speciation, and electrostatic and specific adsorptive soil properties. Empirical and surface complexation models are briefly described, and some results of their application in tropical soils are presented. A better understanding of the role of the double diffuse layer of charges and CEC on nutrient cation availability for highly weathered soils is required, as well as a solid comprehension of surface complexation models, in order to improve the knowledge regarding the behavior of anions in soils. More studies have to be conducted to generate results that enable the use of chemical speciation concepts and calculation of several constants used in surface complexation models, especially for highly weathered soils from the humid tropics. There has to be a continuing development and use of computer softwares that have already incorporated the concepts of chemical speciation and adsorption models in the study of nutrients, toxic elements and heavy metal availability in the soil-plant system.

Kinetic characterizing of soil trace metal availability using Soil/EDTA/Chelex mixture

Chemosphere ◽  
2011 ◽  
Vol 83 (7) ◽  
pp. 997-1004 ◽  
Author(s):  
Nastaran Manouchehri ◽  
Stéphane Besançon ◽  
Alain Bermond
Keyword(s):  
Trace Metal ◽  
Metal Availability
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