Emanuel L. Johnson - Concepedia

Author

Emanuel L. Johnson

Agricultural Research Service

Also Known As

E. L. JOHNSON, E. L. Johnson, E.L. Johnson, EMANUEL L. JOHNSON, Emanuel Johnson, Emanuel L Johnson, Emanuel L. Johnson

Publications

304

Citations

H-Index

Concepts

All Affiliations

Agricultural Research Service Beltsville Agricultural Research Center United States Department of Agriculture

About

Emanuel L. Johnson is an author at Agricultural Research Service specializing in botany, pharmacology, and natural sciences.

Top Concepts

#	Concept	H-Index	Publications	Citations
1	Natural Sciences	6	6	116
2	Medicine	5	5	80
3	Biochemistry	5	5	90
4	Biology	4	4	75
5	Engineering	1	1	26

Emanuel L. Johnson

Publications

276

Citations

H-Index

Page 1

	Year	Citations
Alterations in the production and concentration of selected alkaloids as a function of rising atmospheric carbon dioxide and air temperature: implications for ethno‐pharmacology Lewis H. Ziska, Stephen D. Emche, Emanuel L. Johnson, Global Change Biology Pharmacological StudyBotanyPhysiologyAtmospheric Carbon DioxideScopolamine Concentration	2005	48
Investigation of ozone (O3) effects on 14C distribution in Ladino clover Udo Blum, Edward Mrozek, Emanuel L. Johnson Environmental and Experimental Botany Environmental ChemistryEngineeringAtmospheric PhotochemistryAtmospheric ScienceEnvironmental Engineering	1983	26
Identification of Erythroxylum taxa by AFLP DNA analysis Emanuel L. Johnson, James A. Saunders, Sue Mischke, Phytochemistry BiologyPhylogeneticsBiochemical TaxonomyComparative GenomicsGenetics	2003	26
Flavonoids as markers for Erythroxylum Taxa Emanuel L. Johnson, Walter Schmidt, Helen Norman Biochemical Systematics and Ecology BiochemistryBotanyNatural SciencesPhytochemistryPhytochemical	1998	24
Flavonoids as chemotaxonomic markers for cultivated Amazonian coca Emanuel L. Johnson, Walter Schmidt, Donald A. Cooper Plant Physiology and Biochemistry BotanyPhytochemicalPhytochemistryPharmacologyPolyphenolics	2002	22
Leaf Flavonoids as Chemotaxonomic Markers for Two Erythroxylum Taxa Emanuel L. Johnson, Walter Schmidt, Helen Norman Zeitschrift für Naturforschung C BiologyBiochemistryBotanyNatural SciencesCoca Lam	1997	22
Alkaloid content in Erythroxylum coca tissue during reproductive development Emanuel L. Johnson Phytochemistry PhytopharmacologyPhytochemistryDevelopmental BiologyAlkaloid Content	1996	21
Inter- and Intra-specific Variation among Five Erythroxylum Taxa Assessed by AFLP Emanuel L. Johnson Annals of Botany	2005	18
Flavonoids as Chemotaxonomic Markers for Erythroxylum australe Emanuel L. Johnson, Walter Schmidt Zeitschrift für Naturforschung C BiologyChemotaxonomic MarkersBiosynthesisBotanyBiochemistry	2004	17
Kaempferol (rhamnosyl) glucoside, a new flavonol from Erythroxylum coca. var.ipadu Emanuel L. Johnson, Walter Schmidt, Stephen D. Emche, Biochemical Systematics and Ecology Bioorganic ChemistryFood Bioactive CompoundBiochemistryMedicineNatural Sciences	2002	17

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