A5068479557- Plant nutrient uptake and metabolism
- Medical Imaging Techniques and Applications
- Plant Stress Responses and Tolerance
- Astrophysics and Cosmic Phenomena
- Geophysics and Gravity Measurements
- Ionosphere and magnetosphere dynamics
- Legume Nitrogen Fixing Symbiosis
- Insect-Plant Interactions and Control
- Plant Micronutrient Interactions and Effects
- Nuclear Physics and Applications
- Radiopharmaceutical Chemistry and Applications
- Advanced Chemical Physics Studies
- Chemical Reactions and Isotopes
- Soil Carbon and Nitrogen Dynamics
- Fluorine in Organic Chemistry
- Neuroscience and Neuropharmacology Research
- Chemical Synthesis and Analysis
- Neurotransmitter Receptor Influence on Behavior
- Atomic and Subatomic Physics Research
- Plant Parasitism and Resistance
- Plant responses to elevated CO2
- Inorganic Fluorides and Related Compounds
- Molecular Junctions and Nanostructures
- Analytical Chemistry and Chromatography
- Radiation Therapy and Dosimetry
University of Missouri
2012-2024
Plant (United States)
2020-2022
Brookhaven National Laboratory
2008-2018
SUNY College of Environmental Science and Forestry
2012
State University of New York
2012
Cornell University
2005
Brookhaven College
1987-2004
Stony Brook University
2003
Associated Universities, Inc.
2002
Stadtwerke Jülich (Germany)
1990
Summary Nitrogen‐fixing rhizobacteria can promote plant growth; however, it is controversial whether biological nitrogen fixation ( BNF ) from associative interaction contributes to growth promotion. The roots of Setaria viridis , a model C 4 grass, were effectively colonized by bacterial inoculants resulting in significant enhancement growth. Nitrogen‐13 tracer studies provided direct evidence for uptake the host and incorporation into protein. Indeed, plants showed robust under...
Summary Here, we tested whether rapid changes in carbohydrate transport and partitioning to storage organs would be induced by jasmonic acid (JA), a plant‐produced signal of herbivore attack known induce resistance. Carbon‐11, introduced as 11 CO 2 , was used track real‐time nondestructively Populus species before 12 h after application JA single leaf. Jasmonic resulted more [ C]‐photosynthate export from both local systemic leaves, well greater the stem roots. In tremuloides following...
Ecology Letters (2011) 14 : 55–64 Abstract The most valuable organs of plants are often particularly rich in essential elements, but also very well defended. This creates a dilemma for herbivores that need to maximise energy intake while minimising intoxication. We investigated how the specialist root herbivore Diabrotica virgifera solves this conundrum when feeding on wild and cultivated maize plants. found crown roots seedlings were vital plant development and, accordance, nutritious...
Commentary p643
Associations between plants and microorganisms are very complex the subject of an increasing number studies. Here, we specifically address relationship poplar its endophytic bacteria. The role importance bacteria in growth development their host is still underestimated. However, since many endophytes have a beneficial effect on host, improved understanding interaction has potential to provide major breakthroughs that will improve productivity poplar. Endophytic can plant direct or indirect...
The circadian clock regulates plant metabolic functions and is an important component in health productivity. Rhizosphere bacteria play critical roles growth, health, development are shaped primarily by soil communities. Using Illumina next-generation sequencing high-resolution mass spectrometry, we characterized bacterial communities of wild-type (Col-0) Arabidopsis thaliana acyclic line (OX34) ectopically expressing the clock-associated cca1 transcription factor, relative to a control,...
Abstract Upon attack by leaf herbivores, many plants reallocate photoassimilates below ground. However, little is known about how respond when the roots themselves come under attack. We investigated induced resource allocation in maize that are infested larvae Western corn rootworm D iabrotica virgifera . Using radioactive 11 CO 2 , we demonstrate root‐attacked allocate more new C carbon from source leaves to stems, but not roots. Reduced meristematic activity and reduced invertase attacked...
Abstract We tested for rapid changes in photosynthate transport and partitioning response to Lymantria dispar (L.) (Lepidoptera: Lymantriidae) (gypsy moth) herbivory Populus nigra L. (Salicaceae). Transport of [ 11 C]‐photosynthate from young mature leaves were measured vivo before 18 h after leaf chewing by gypsy moth larvae, which caged on three older leaves. Following herbivory, there was an increase export speed recently fixed carbon younger The increased due a quicker transit time C...
Abstract Upon herbivory, plants can swiftly reallocate newly acquired resources to different tissues within a plant. Although the herbivore‐induced movement of is apparent, direction and role remobilized are not well understood. Here, we used two‐pronged approach combining radioisotope metabolomic techniques shed light on whole‐plant resource reallocation changes in primary metabolism tomato, Solanum lycopersicum (L.) (Solanaceae), model response simulated herbivory by specialist Manduca...
Abstract Using the short-lived isotope 11C (t1/2 = 20.4 min) as 11CO2, we captured temporal changes in whole-plant carbon movement and partitioning of recently fixed into primary secondary metabolites a time course (2, 6, 24 h) following simulated herbivory with well-known defense elicitor methyl jasmonate (MeJA) to young leaves Arabidopsis (Arabidopsis thaliana). Both 11CO2 fixation 11C-photosynthate export from labeled source leaf increased rapidly (2 MeJA treatment relative controls,...
The Facility for Rare Isotope Beams (FRIB) at Michigan State University provides a unique opportunity to access some of the nation's most specialized scientific resources: radioisotopes. An excess useful radioisotopes will be formed as FRIB fulfills its basic science mission providing rare isotope beams. In order beams reach high-purity, many isotopes are discarded and go unused. If harvested, unused could enable cutting-edge research diverse applications ranging from medical therapy...
Iron (Fe), an essential element for plant growth, is abundant in soil but with low bioavailability. Thus, plants developed specialized mechanisms to sequester the element. Beneficial microbes have recently become a favored method promote growth through increased uptake of micronutrients, like Fe, yet little known their action. Functional mutants epiphytic bacterium Azospirillum brasilense, prolific grass-root colonizer, were used examine promoting iron Zea mays. Mutants included HM053, FP10,...
One of the major mechanisms for terminating actions catecholamines and vasoactive dietary amines is oxidation by monoamine oxidase (MAO). Smokers have been shown to reduced levels brain MAO, leading speculation that MAO inhibition tobacco smoke may underlie some behavioral epidemiological features smoking. Because smoking exposes peripheral organs as well MAO-inhibitory compounds, we questioned whether smokers would also in organs. Here compared B nonsmokers using positron emission...
ABSTRACT A new approach for pulse labelling of plants using the short‐lived positron emitting radioisotope carbon‐11 (half‐life: 20.4 min) as 11 CO 2 is reported together with its application to measuring [ C]isoprene emissions from intact leaves capturing information associated with: (1) rate emission; (2) relative contribution recently fixed carbon isoprene biosynthesis; and (3) transit time tracer movement through leaf biochemical pathways biosynthesis. This was applied study response...
The methamphetamine molecule has a chiral center and exists as 2 enantiomers, d-methamphetamine (the more active enantiomer) l-methamphetamine less enantiomer). d-Methamphetamine is associated with intense stimulant effects higher abuse liability. objective of this study was to measure the pharmacokinetics for comparison both (-)-cocaine in baboon brain peripheral organs assess saturability pharmacologic specificity binding.d- were labeled (11)C via alkylation norprecursors (11)C-methyl...
Although important aspects of whole-plant carbon allocation in crop plants (e.g., to grain) occur late development when the are large, techniques study transport and processes have not been adapted for large plants. Positron emission tomography (PET), developed dynamic imaging medicine, has applied plant studies measure patterns carbohydrates, nutrients, phytohormones labeled with positron-emitting radioisotopes. However, cost PET its limitation smaller restricted use biology. Here we...
Agriculture in the 21st century faces many formidable challenges with growing global population. Increasing demands on planet’s natural resources already tax existing agricultural practices. Today, farmers are using biochemical treatments to improve their yields. Commercialized organic biostimulants exist form of pyroligneous acid generated by burning waste products. Recently, we examined mechanisms through which a commercial product, Coriphol™, manufactured Corigin Solutions, Inc.,...
A novel technique is described for generation of translationally ‘‘hot’’ oxygen atoms that can be used chemical studies. These are produced through ion sputtering on Ta2 O5 targets. Mass-resolved beams noble gas ions in the kilovolt energy range generated this purpose using a 150-cm isotope separator. The yield fluxes 1015 –1016 cm−2 s−1 from 40-keV argon beam with 15-μA intensity. sputtered predominantly neutral and reside exclusively their 3PJ ground electronic state upon ejection....