Root Monitoring Articles
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Guest Post: Using Plant Science Tools to Monitor and Restore a Native Hawaiian Forest
Native Forest Restoration and Monitoring Project Report #4 November 3rd, 2016 by Mihaela Ryer and Michael Ryer October is known as Ikua in the Hawaiian calendar. It's the month when, according to the Hawaiian folklore, dark storms arise, sea roars, thunder roars, birds roar. We haven’t heard any roaring birds, but certainly had our share of dark storms, thunder and roaring seas. October ...
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Mixture toxicity of copper, cadmium and zinc to barley seedlings is not explained by antioxidant and oxidative stress biomarkers
Metal mixture toxicity analysis to plants is complicated by mutual interactions. Here, mixture effects of zinc (Zn), cadmium (Cd) and copper (Cu) on barley (Hordeum vulgare L.) root elongation were analysed using oxidative stress parameters. The hypothesis was that toxic mixture effects on plant growth are better explained by biochemical parameters than by exposure information, because the ...
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Barley root hair growth and morphology in soil, sand, and water solution media and relationship with nickel toxicity
Barley, Hordeum vulgare (Doyce), was grown in the three media of soil, hydroponic sand solution (sand), and hydroponic water solution (water) culture at the same environmental conditions for 4 d (days). Barley roots were scanned and root morphology was analyzed. Plants grown in the three media had different root morphology and Ni toxicity response. Root elongations and total root lengths ...
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Effects of bisphenol a on key enzymes in cellular respiration of soybean seedling roots
Environmental endocrine disrupter–bisphenol A (BPA) is ubiquitous in the environment, with potential toxic effects on plants. Previous studies found a significant effect of BPA on levels of mineral nutrients in plant roots, but the underlying mechanism remains unknown. To determine how BPA influences root mineral nutrients, the effects of BPA (1.5, 3.0, 6.0, 12.0, 24.0, 48.0 and 96.0 mg L−1) ...
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Grasslands Research Featuring CI-600 In-Situ Root Imager and RootSnap! Published in Invasive Plant and Science Management
University of Nebraska researchers Chengchou Han and Stephen L. Young have published their article “Root Growth of Two Perennial Grass Types and Musk Thistle (Carduus nutans) in Temperate Grasslands of North America” in the July/August edition mof Invasive Plant and Science Management. The article details their 2 year study using the CI-600 In-Situ Root Imager and free RootSnap! ...
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Outposts: CI-600 In-Situ Root Imager at the Arctic Station
Icebergs dot the bay along the coast of Disko Island, home of the University of Copenhagen’s Arctic Station. Here researchers study environmental issues impacting the Polar Regions, including physical geography, botany, and zoological research. Dr. Marie Frost Arndal, Faculty of Science, University of Copenhagen, is heading a research project studying root dynamics in the Arctic. Her ...
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Welcoming Our Interns, Part I
Katherine is working with Application Scientist and Quality Assurance Manager, Andrea Melnychenko, and will be focusing on characterizing the electrochemical sensor response of our CI-900 Portable Ethylene Analyzer across various conditions. She will also conduct an experiment to quantify root developmental differences under drought conditions using our CI-600 In-Situ Root Imager and CI-690 ...
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Effects of bisphenol A on growth and nitrogen nutrition of roots of soybean seedlings
Bisphenol A (BPA) is an environmental endocrine disruptor that seriously threatens ecological systems. Plants are the primary producers in ecological systems, but little information is available concerning the toxic effect of BPA on plants. In the present study, the effects of BPA on the growth and nitrogen nutrition of roots of soybean seedlings were investigated by using a root automatic scan ...
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Oxidative damage and antioxidant response of Allium cepa meristematic and elongation cells exposed to metronidazole
The toxicity of metronidazole (MTZ) in meristematic and elongation zones of Allium cepa roots was analyzed for 30 h of exposition. Toxic effects were evaluated by lipid peroxidation (content of thiobarbituric‐reactive substances [TBARS]), reduced glutathione (GSH) levels, ascorbate acid and dehydroascorbate acid content, and enzymatic activities of superoxide dismutase and catalase. The root ...
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A root-zone soil regime of wheat: physiological and growth responses to furrow irrigation in raised bed planting in northern China
Different irrigation methods in wheat (Triticum aestivum L.) result in different water and nutrient use efficiencies and, ultimately, plant growth. A field experiment was conducted during the 2006–2007 and 2007–2008 crop cycles to investigate the effects of furrow irrigated raised bed planting and the effects of flood irrigated conventional planting on growth and productivity in winter wheat. In ...
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Relationship between root characteristics of peanut in hydroponics and pot studies
A large root system can be an important character for drought tolerance. Measuring root characteristics in soil medium is tedious, time consuming, and labor intensive. The objective of this study was to determine the association between root characteristics of peanut (Arachis hypogaea L.) grown in hydroponics and in pot experiments. Twelve peanut genotypes were planted in a randomized complete ...
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Creeping bentgrass putting green turf responses to two summer irrigation practices: Rooting and soil temperature
Light and frequent (LF) and deep and infrequent (DI) irrigation are two common practices for golf course managers. Few studies have compared the effects of these two opposing irrigation practices on summer root performance in creeping bentgrass (Agrostis stolonifera L.). The objectives of this field study were to quantify summer root development and longevity in response to LF vs. DI irrigation ...
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Influence of phosphorus and potassium on alfalfa yield, taproot C and N pools, and transcript levels of key genes after defoliation
Fertilization with K and P impacts alfalfa (Medicago sativa L.) yield, but how these nutrients influence taproot reserves and gene expression is unknown. Our objectives were to determine how P and K impact (i) alfalfa yield and yield components, (ii) accumulation and use of taproot carbon (C) and nitrogen (N) pools, and (iii) transcript levels for β-amylase, sucrose synthase, and the high ...
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Financial capital democratisation: recipes for growth and disaster
The broadening of access to financial capital otherwise known as financial capital democratisation (FCD), has been receiving increasingly more attention, especially from those who are concerned about poverty, community development and development of entire nations. This concept has also its roots in ethical and religious based economic systems. In this paper we review various FCD systems. Our ...
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Early growth of flint maize landraces under cool conditions
Cold stress is a major factor that limits the success of environmentally sound cultivation of maize in central and northern Europe. This study evaluated the early growth of seven groups of Swiss Flint maize landraces (Zea mays L. ssp. mays) of different geographic origin under controlled cool conditions by assessing shoot and root traits. Measurements of plants, subjected to a permanent cold ...
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QTL analysis of root architecture traits and low Phosphorus tolerance in an Andean bean population
Tolerance to low P soils is a desirable trait in common bean (Phaseolus vulgaris L.) cultivars grown in acid-weathered soils. Genetic variability in response to P-deficient soils exists in the Andean gene pool. G19833, a low P–tolerant indeterminate Andean landrace, has been evaluated for quantitative trait loci (QTL) and tolerance to low P in combination with Mesoamerican parents. Our goal was ...
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Uptake and distribution of Iodine in Rice plants
Rice (Oryza sativa L.) plants were cultivated in an experimental field and separated at harvest into different components, including polished rice, rice bran, hull, straw, and root. The contents of iodine in these components and the soil were determined by inductively coupled plasma–mass spectrometry and radiochemical neutron activation analysis, respectively. Iodine content varied by more than ...
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Soil CO2 efflux in uneven-aged managed forests: temporal patterns following harvest and effects of edaphic heterogeneity
AbstractForest management is expected to influence soil CO2 efflux (FCO2) as a result of changes in microclimatic conditions, soil properties, and root dynamics. We measured FCO2 during the growing seasons of 2003 and 2004 in both gap and non-gap locations within stands ranging from 0 to 10 years after the most recent harvest in a selection-managed northern hardwood forest in central Ontario, ...
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Evidence of active biotic influences in pedogenetic processes. Case studies from semiarid ecosystems of south-west Western Australia
Abstract Soil profiles and rooting morphologies were examined under an ecotone where open woodland of multi-stemmed, small, lignotuberous eucalypts (mallee) graded into proteaceous heath. Soils under the mallee showed a Solonetz-type seal which separated, hydrologically, the upper acidic horizon of bleached sand from lower alkaline horizons rich in calcrete, silcrete, finely divided ...
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Local innovation system governance and performance: a comparative analysis of Oxfordshire, Stuttgart and Toulouse
In this paper, we trace the development of three "ideal types" of local innovation system governance since the Second World War in three highly innovative city regions. The types of innovation governance are dirigiste, networked and grass roots. These are analysed in the case study areas of Oxfordshire, Stuttgart and Toulouse. It is shown that the hegemony of each type of governance changes over ...
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