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Life Sciences Commons

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2002

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Utah State University

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Articles 271 - 280 of 280

Full-Text Articles in Life Sciences

Ethylene Synthesis And Sensitivity In Crop Plants, Stephen P. Klassen, Bruce Bugbee Jan 2002

Ethylene Synthesis And Sensitivity In Crop Plants, Stephen P. Klassen, Bruce Bugbee

NASA

Closed and semi-closed plant growth chambers have long been used in studies of plant and crop physiology. These studies include the measurement of photosynthesis and transpiration via photosynthetic gas exchange. Unfortunately, other gaseous products of plant metabolism can accumulate in these chambers and cause artifacts in the measurements. The most important of these gaseous by products is the plant hormone ethylene (C2H4). In spite of hundreds of manuscripts on ethylene, we still have a limited understanding of the synthesis rates throughout the plant life cycle. We also have a poor understanding of the sensitivity of intact, rapidly growing plants to …


Crop Production On The Lunar Surface Using Solar Fiber Optics: Mitigating The Effects Of Prolonged Darkness With Low Temperature And Low Light, Bruce Bugbee, Julie K. Chard Jan 2002

Crop Production On The Lunar Surface Using Solar Fiber Optics: Mitigating The Effects Of Prolonged Darkness With Low Temperature And Low Light, Bruce Bugbee, Julie K. Chard

NASA

Plant metabolism and growth are reduced in low temperature. As metabolism slows, energy requirements are reduced and less light is needed. The temperature should be maintained above the chilling temperature for the plant, which is species dependent. The addition of light will allow the plant to continue to expend energy on maintenance and some growth. Here we show that low light and cool temperatures can be used to maintain plants through the 14.7 days on the dark side of the Moon. Growth resumes immediately after the light is restored.


Water & Nutrient Stress Increase Root Exudation, A. Henry, J. Chard, J. Norton, M. Petersen, Bruce Bugbee, M. Hamilton, C. Palmer, J. R. Hess Jan 2002

Water & Nutrient Stress Increase Root Exudation, A. Henry, J. Chard, J. Norton, M. Petersen, Bruce Bugbee, M. Hamilton, C. Palmer, J. R. Hess

Water Stress

A presentation on how to develop procedures to grow healthy plants under sterile conditions, manipulate root exudation with stress, and quantify total organic carbon in exudates and determine composition of exudates using GC-MS.


Interferon-Alpha, Dale L. Barnard Jan 2002

Interferon-Alpha, Dale L. Barnard

Animal, Dairy, and Veterinary Science Faculty Publications

Amarillo Biosciences is developing low-dose oral interferon-alpha (IFNalpha; Veldona) as a potential treatment for primary Sjøgren's syndrome, oral mucositis in cancer patients, hepatitis B and C virus (HBV and HCV) infections, and bone marrow disorders. The company is also developing a topical formulation of IFNalpha for the potential treatment of genital warts. The product is registered in Ghana for the treatment of HBV infection. In October 2001, Amarillo licensed rights to its low-dose oral IFNalpha to Atrix Laboratories for the Orphan indications of oral papillomavirus and Behçet's disease.


Legal Process For Defending Your Grazing Permit, Roger E. Banner, M. Reed Balls Jan 2002

Legal Process For Defending Your Grazing Permit, Roger E. Banner, M. Reed Balls

All Archived Publications

No abstract provided.


Locust Borer, Jay B. Karren, Alan H. Roe Jan 2002

Locust Borer, Jay B. Karren, Alan H. Roe

All Current Publications

The locust borer, Megacyllene robiniae (Forster) belongs to the beetle family Cerambycidae, commonly known as the longhorned beetles, a name which refers to the long antennae of most of the species in this group.


Vascular Plant And Epiphytic Lichen Communities In Canadian Aspen Parkland: Determinants Of Small-Scale Species Richness, H.L. Buckley Jan 2002

Vascular Plant And Epiphytic Lichen Communities In Canadian Aspen Parkland: Determinants Of Small-Scale Species Richness, H.L. Buckley

Aspen Bibliography

Within-community species-area relationships were examined for vascular plants and epiphytic lichens on Populus spp within 100 treed patches in an area of less than 4 km2 in the aspen parkland of south-central Alberta, Canada. Both plants and lichens were sampled on three scales (patch-scale and two within-patch scales). This study is one of the few to demonstrate scale-dependent species-area relationships at a small scale and highlights the importance of multi-scale sampling in ecology. At the larger patch scale, the relationship between plant species richness and area was positive for both the full plant dataset and the forest habitat specialist …


Linking Ethiopian And Kenyan Pastoralists & Strengthening Cross-Border Collaboration, D. Layne Coppock, Solomon Desta Jan 2002

Linking Ethiopian And Kenyan Pastoralists & Strengthening Cross-Border Collaboration, D. Layne Coppock, Solomon Desta

Environment and Society Faculty Publications

No abstract provided.


Minnesota Forest Resources In 2000, David E. Haugen, Manfred E. Mielke Jan 2002

Minnesota Forest Resources In 2000, David E. Haugen, Manfred E. Mielke

Aspen Bibliography

No abstract provided.


Influence Of Forest Composition On Understory Cover In Boreal Mixedwood Forests Of Western Quebec, Sonia Legare, Yves Bergeron, David Pare Jan 2002

Influence Of Forest Composition On Understory Cover In Boreal Mixedwood Forests Of Western Quebec, Sonia Legare, Yves Bergeron, David Pare

Aspen Bibliography

Forest overstory composition influences both light and nutrient availability in the mixed boreal forest. The influence of stand composition on understory cover and biomass was investigated on two soil types (clay and till deposits). Four forest composition types were considered in this study: aspen (Populus tremuloides Michx.), paper birch (Betula papyrifera Marsh.), jack pine (Pinus banksiana Lamb.) and a mixture of balsam-fir (Abies balsamea (L.) Mill.) and white spruce (Picea glauca (Moench) Voss). The cover of all understory species was recorded while the biomass of two important and ubiquitous species was measured: mountain maple (Acer spicatum Lam.) of the shrub …