A5041493913- Plant responses to elevated CO2
- Plant Water Relations and Carbon Dynamics
- Atmospheric chemistry and aerosols
- Climate variability and models
- Plant Disease Management Techniques
- Atmospheric and Environmental Gas Dynamics
- Photosynthetic Processes and Mechanisms
- Soybean genetics and cultivation
- Climate change impacts on agriculture
- Light effects on plants
- Plant Stress Responses and Tolerance
- Nematode management and characterization studies
- Irrigation Practices and Water Management
- Plant Parasitism and Resistance
- Urban Heat Island Mitigation
- Crop Yield and Soil Fertility
- Soil Carbon and Nitrogen Dynamics
- Plant Physiology and Cultivation Studies
- Rice Cultivation and Yield Improvement
- Greenhouse Technology and Climate Control
- Plant responses to water stress
- Pesticide and Herbicide Environmental Studies
- Bioenergy crop production and management
- Plant nutrient uptake and metabolism
- Marine and coastal plant biology
University of Florida
2003-2020
Agricultural Research Service
2009-2020
United States Department of Agriculture
2006-2020
Center for Medical, Agricultural and Veterinary Entomology
2008-2019
Colorado State University
2010
Agricultural Research Service - Plains Area
2010
University of Nebraska–Lincoln
2010
Southwest Florida Research
2006
Kansas State University
2006
Texas A&M University – Kingsville
2002
Abstract As global population increases and industrialization expands, carbon dioxide (CO 2 ) toxic air pollutants can be expected to injected into the atmosphere at increasing rates. This analysis reviews a wide range of direct plant responses rising CO , levels gaseous pollutants, climate change, potential interactions among factors. Although several environmental on stomata foliage temperatures are reviewed briefly, comprehensive review effects climatic change plants is not major...
Abstract It is important to quantify and understand the consequences of elevated temperature carbon dioxide (CO 2 ) on reproductive processes yield develop suitable agronomic or genetic management for future climates. The objectives this research work were (a) effects CO photosynthesis, pollen production, viability, seed‐set, seed number, seeds per pod, size, dry matter production kidney bean (b) determine if deleterious high could be compensated by enhanced photosynthesis at levels. Red cv....
Documented increases in global atmospheric CO 2 concentration have stimulated interest the direct effects of on plant growth and yield as well interactive with other major climatic variables. This study was conducted to determine interactions air temperature development, growth, total nonstructural carbohydrate (TNC), final seed soybean [ Glycine max (L.) Merr., cv. Bragg] grown season‐long naturally lit, controlled‐environment chambers. Day/night temperatures 26/19, 31/24, 36/29 °C were...
Climate change due to increased [CO 2 ] and elevated temperature may impact the composition of crop seed. This study was conducted determine potential effects climate on gene expression soybean [ Glycine max (L.) Merr. cv. ‘Bragg’] Soybean plants were grown in sunlit, controlled environment chambers under diel, sinusoidal temperatures 28/18, 32/22, 36/26, 40/30, 44/34°C (day/night, maximum/minimum), two levels ], 350 700 μmol mol −1 , imposed during entire life cycle. The effect mature seed...
Abstract Continuing increases in atmospheric carbon dioxide concentration (CO 2 ) will likely be accompanied by global warming. Our research objectives were (a) to determine the effects of season‐long exposure daytime maximum/nighttime minimum temperatures 32/22, 36/26, 40/30 and 44/34°C at ambient (350 μmol mol −1 elevated (700 CO on reproductive processes yield peanut, (b) evaluate whether higher photosynthetic rates vegetative growth negate detrimental high temperature yield. Doubling...
Elevated carbon dioxide throughout the lifespan of soybean causes an increase in photosynthesis, biomass, and seed yield. A rectangular hyperbola model predicts a 32% yield with doubling from 315 to 630 ppm shows that yields may have increased by 13% about 1800 A.D. present due global increases. Several other sets data indicate photosynthetic growth response rising many species, including woody plants, is similar soybean. Calculations suggest enough could be sequestered annually...
SUMMARY Rice plants ( Oryza saliva L., cv. IR30) were grown in paddy culture outdoor, naturally sunlit, controlled-environment, plant growth chambers at Gainesville, Florida, USA, 1987. The rice exposed throughout the season to subambient (160 and 250), ambient (330) or superambient (500, 660, 900 μmol CO 2 /mol air) concentrations. Total shoot biomass, root tillering, final grain yield increased with increasing concentration, thegreatest increase occurring between 160 500 air treatments....
Growth at an elevated CO(2) concentration resulted in enhanced capacity for soybean (Glycine max L. Merr. cv Bragg) leaflet photosynthesis. Plants were grown from seed outdoor controlled-environment chambers under natural solar irradiance. Photosynthetic rates, measured during the filling stage, up to 150% greater with leaflets 660 compared 330 microliters of per liter when across a range intercellular concentrations and Soybean plants had heavier pod weights plant, 44% plants, also specific...
Reducing concentrations of carbon dioxide (CO2) and other greenhouse gases (GHG) in Earth's atmosphere is identified as one the most pressing modern-day environmental issues (IPCC 2007). As a signatory country to United Nations Framework Convention on Climate Change (UNFCCC), States actively engaged critical international effort find solutions problems posed by climate change. Agriculture, addition being affected climate, contributes change through its exchanges GHG with atmosphere. Thus,...
Mean horizontal wind speed profiles within and above a plantation of Japanese larch were obtained. A log-profile analysis above-vegetation speeds yielded wide range values for the roughness length parameter z0 zero-plane displacement height D. The computed Eulerian space scale turbulence vegetation showed deeper penetration large eddies after needle fall during high winds. Power spectra that at base most variation in was associated with gusts about 100 m wavelength. dense portion canopy...
Abstract Maize ( Z ea mays ) production, which is of global agro‐economic importance, largely limited by herbivore pests, pathogens and environmental conditions, such as drought. Zealexins kauralexins belong to two recently identified families acidic terpenoid phytoalexins in maize that mediate defence against both pathogen insect attacks aboveground tissues. However, little known about their function belowground organs potential counter abiotic stress. In this study, we show zealexins...
Abstract Maize is by quantity the most important C 4 cereal crop; however, future climate changes are expected to increase maize susceptibility mycotoxigenic fungal pathogens and reduce productivity. While rising atmospheric [ CO 2 ] a driving force behind warmer temperatures drought, which aggravate disease mycotoxin accumulation, our understanding of how elevated will effect defences against such limited. Here we report that increases F usarium verticillioides proliferation, while levels...
ABSTRACT Rice ( Oryza sativa L. cv. IR‐72) and soybean Glycine max Merr. Bragg), which have been reported to differ in acclimation elevated CO 2 , were grown for a season sunlight at ambient twice‐ambient [CO ], under daytime temperature regimes ranging from 28 40°C. The objectives of the study test whether enrichment could compensate adverse effects high growth temperatures on photosynthesis, these two C 3 species differed this regard. Leaf photosynthetic assimilation rates A ) both...
Abstract. The effects were studied of season‐long (75 and 88d) exposure rice ( Oryza sativa L. cv. IR‐30) to a range atmospheric CO 2 concentrations in outdoor, computer‐controlled, environment chambers under natural solar radiation. maintained at 160, 250, 330, 500, 660 900μmol mol ‐1 air. Photosynthesis increased with increasing growth up 500u.mol moP1, but levelled off higher values. Specific leaf area also significantly . Although dry weight index increased, the overall response was not...
The continuing increase in atmospheric carbon dioxide concentration ([CO2]) and projections of possible future increases globalair temperatures have stimulated interest the effects these climate variables on agriculturally important food crops. Thisstudy was conducted to determine [CO2] temperature rice (Oryza sativa L., cv. IR–30). Rice plants weregrown season-long outdoor, naturally sunlit, controlled-environment, plant growth chambers regimes ranging from 25/18/21°C 37/30/34°C (daytime...