Plant Roots and Soil Structure

2011 ◽  
pp. 628-632 ◽  
Author(s):  
A. Pierret ◽  
C. J. Moran
Keyword(s):  
Soil Structure ◽  
Plant Roots

scholarly journals Preparation Of Soil Samples For Light And Transmission Electron Microsopy

2003 ◽  
Vol 11 (5) ◽  
pp. 38-41
Author(s):  
Gordon Vrdoljak
Keyword(s):  
Soil Structure ◽  
Tropical Soils ◽  
Water Infiltration ◽  
Plant Roots ◽  
Journal Articles ◽  
Adequate Description ◽  
Soil Medium ◽  
Infiltration Rates ◽  
Transmission Electron ◽  
Germination And Growth

Soil structure influences water supply to plant roots, aeration, water infiltration rates, suitability of soil medium for seed germination and growth, growth of plant roots, drainage, evaporation, mechanical strength, and workability (Dexter 1988). Adequate description of soil structure for cultivation, engineering, or remediation is typically done by light microscopy and transmission electron microscopy. Literature exists in numerous sources for preparation of soils for microscopy, but often preparation steps are left out due to the shortening of Methods Sections in journal articles to conserve print space. I present here, protocols I've used for preparation of tropical soils (Oxisols) for microscopy.

scholarly journals Mycorrhizae: Implications for Environmental Remediation and Resource Conservation

EDIS ◽  
2008 ◽  
Vol 2008 (3) ◽  
Author(s):  
Jyotsna Sharma ◽  
Andrew V. Ogram ◽  
Abid Al-Agely
Keyword(s):  
Environmental Remediation ◽  
Soil Structure ◽  
Resource Conservation ◽  
Plant Roots ◽  
Fact Sheet ◽  
Symbiotic Relationships

ENH-1086, a 5-page fact sheet by J. Sharma, A.V. Ogram, and A. Al-Agely, describes the symbiotic relationships between plant roots and fungi and how the resulting rhizosphere activity can lead to transformation and removal of polluting compounds from the soil, reduce the need for fertilizer in commercial nurseries, and improve soil structure and health. Includes references. Published by the UF Department of Environmental Horticulture, November 2007.  

scholarly journals Large-scale sequestration of atmospheric carbon via plant roots in natural and agricultural ecosystems: why and how

2012 ◽  
Vol 367 (1595) ◽  
pp. 1589-1597 ◽  
Author(s):  
Douglas B. Kell
Keyword(s):  
Organic Carbon ◽  
Soil Structure ◽  
Large Scale ◽  
C Sequestration ◽  
Plant Roots ◽  
Individual Species ◽  
Agricultural Crops ◽  
Agricultural Ecosystems ◽  
Agronomic Practices ◽  
Below Ground

The soil holds twice as much carbon as does the atmosphere, and most soil carbon is derived from recent photosynthesis that takes carbon into root structures and further into below-ground storage via exudates therefrom. Nonetheless, many natural and most agricultural crops have roots that extend only to about 1 m below ground. What determines the lifetime of below-ground C in various forms is not well understood, and understanding these processes is therefore key to optimising them for enhanced C sequestration. Most soils (and especially subsoils) are very far from being saturated with organic carbon, and calculations show that the amounts of C that might further be sequestered ( http://dbkgroup.org/carbonsequestration/rootsystem.html ) are actually very great. Breeding crops with desirable below-ground C sequestration traits, and exploiting attendant agronomic practices optimised for individual species in their relevant environments, are therefore important goals. These bring additional benefits related to improvements in soil structure and in the usage of other nutrients and water.

Acute and chronic toxicity studies on Polygonum glabrum in experimental animals

2020 ◽  
Vol 3 (1) ◽  
pp. 7-10
Author(s):  
Saravanakumar A ◽  
Gandhimathi R
Keyword(s):  
Chronic Toxicity ◽  
Clinical Stage ◽  
Herbal Medicines ◽  
Plant Roots ◽  
Root Extract ◽  
Experimental Animals ◽  
Toxicity Studies ◽  
Acute And Chronic Toxicity ◽  
Diuretic Agents

Polygonum glabrum is being used in traditional and folklore medicine to treat pneumonia and jaundice. Plant roots are used in ayurvedic preparations to treat fever and colic. The leaves are used as diuretic agents and process vermifuge action. Plant decoction is also used in the treatment of Rheumatism. Besides having many uses and folklore claims, herbal medicines are to be thoroughly investigated for their toxicity also. Therefore this work is being carried out to examine the toxicity of the drug and established dose is safe to use in the clinical stage. The current research studied the acute and chronic toxicity of Polygonum glabrum root extract in rats. It is proved that there was no change in any parameter tested both in acute and chronic toxicity, which means the extract is safe and non-toxic at the dose of 2g/kg also.

SOIL STRUCTURE AND WATER-STABLE AGGREGATES

2013 ◽  
Vol 12 (4) ◽  
pp. 741-746 ◽  
Author(s):  
Florian Statescu ◽  
Dorin Cotiusca Zauca ◽  
Lucian Vasile Pavel
Keyword(s):  
Soil Structure ◽  
Water Stable Aggregates

Effect of 24-epibrassinolide on localization of ABA, AZP, and dehydrins in wheat plant roots during dehydration

Biomics ◽  
2020 ◽  
Vol 12 (3) ◽  
pp. 329-336
Author(s):  
A.R. Lubyanova ◽  
F.M. Shakirova ◽  
M.V. Bezrukova
Keyword(s):  
Triticum Aestivum ◽  
Wheat Germ ◽  
Wheat Plant ◽  
Triticum Aestivum L ◽  
Immunohistochemical Localization ◽  
Plant Roots ◽  
Wheat Roots ◽  
Wheat Seedlings ◽  
Apoplastic Barrier ◽  
Protective Proteins

We studied the immunohistochemical localization of abscisic acid (ABA), wheat germ agglutinin (WGA) and dehydrins in the roots of wheat seedlings (Triticum aestivum L.) during 24-epibrassinolide-pretreatment (EB-pretreatment) and PEG-induced dehydration. It was found coimmunolocalization of ABA, WGA and dehydrins in the cells of central cylinder of basal part untreated and EB-pretreated roots of wheat seedlings under normal conditions and under osmotic stress. Such mutual localization ABA and protective proteins, WGA and dehydrins, indicates the possible effect of their distribution in the tissues of EB-pretreated wheat roots during dehydration on the apoplastic barrier functioning, which apparently contributes to decrease the water loss under dehydration. Perhaps, the significant localization of ABA and wheat lectin in the metaxylem region enhances EB-induced transport of ABA and WGA from roots to shoots under stress. It can be assumed that brassinosteroids can serve as intermediates in the realization of the protective effect of WGA and wheat dehydrins during water deficit.

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