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Entomology
The LI-6400XT is used in a number of different ecophysiological applications related to Entomology.
Picture of the 6400-89 chamber with a Madagascar Hissing cockroach for Insect Respiration Studies
Insect Respiration
Scientists interested in measuring insect respiration with the LI-6400XT can use the 6400-89 Insect Respiration Kit. The kit includes a sample cell outlet manifold that blocks off the sample chamber to eliminate additional volume during the measurement. LI-COR also provides a software download for this application which outputs respiration on a per mass basis.
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Kevin Delaney using the LI-6400 to collect leaf photosynthesis data from a common milkweed plant either before or after insect herbivory has been imposed (at Nine-Mile Prairie in Lincoln, NE)
Entomological Applications using the LI-6400XT for Gas Exchange
Scientists use the LI-6400XT to understand the effects of herbivory on photosynthesis. Insect herbivory can have an effect on ecosystems by decreasing photosynthesis and net primary production. The herbivory can cause disruption of water and nutrient transport as well as directly affecting performance of photosynthetic enzymes within the tissue. Insect feeding may detrimentally affect plants photosynthetic capabilities by interfering with photochemical and light reactions, disturbing the physical process of the transfer of CO2 from the ambient air to the chloroplast, and by disrupting the biochemical reactions that involve CO2 incorporation.
6400-40 Fluorometer
Entomological Applications using the LI-6400XT for Fluorescence
Many scientists want to know how insects affect light harvesting by plants. Leaf Chlorophyll Fluorescence studies using the LI-6400XT with the 6400-40 Fluorometer can help determine insect damage affects on the photochemical efficiency of Photosystem II by measuring parameters such as nonvariable fluorescence, photochemical quantum yield, photosynthetic electron transport rate and the quenching coefficients, nonphotochemical quenching, and photochemical quenching.
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A partially defoliated soybean leaf. Scientists use the LI-6400 to better understand plant responses to defoliators like the grasshopper seen above.
Entomological Research conducted with the LI-6400/6400XT
The differential effects of herbivory by first and fourth instars of Trichoplusia ni (Lepidoptera: Noctuidae) on photosynthesis in Arabidopsis thaliana
Combined Impacts of Western Corn Rootworm Larval Feeding, European Corn Borer and Giant Foxtail on Field Corn
Photosynthetic Responses of Wheat, Triticum aestivum L., Plants to Simulated Insect Defoliation During Vegetative Growth and at Grain Fill
Physiological and antioxidant responses of cotton andspurred anoda under interference and mild drought
Physiological Response of Glandular-Haired Alfalfa to Potato Leafhopper (Hemiptera: Cicadellidae) Injury
Differential Physiological Responses of Dalmatian Toadflax, Linaria dalmatica L. Miller, to Injury from Two Insect Biological Control Agents: Implications for Decision-Making in Biological Control
Serpentine leafminer (Liriomyza trifolii) on potato (Solanum tuberosum): field observations and plant photosynthetic responses to injury
Indirect effects of insect herbivory on leaf gas exchange in soybean
An insect countermeasure impacts plant physiology: midrib vein cutting, defoliation and leaf photosynthesis
Impact of Insecticides and Surfactant on Lettuce Physiology and Yield
A Test of the Treeline Carbon Limitation Hypothesis by In Situ CO2 Enrichment and Defoliation
Wheat Stem Sawfly, Cephus cinctus Norton, Impact on Wheat Primary Metabolism: An Ecophysiological Approach
