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RECORD NUMBER: 300 OF 845

OLS Field Name OLS Field Data
Main Title Effect of Cadmium on the Root and Nodule Ultrastructure of 'Alnus rubra'.
Author Wickliff, Carlos ; Evans, H. J. ;
CORP Author National Heart, Lung, and Blood Inst., Bethesda, MD.
Year Published 1980
Report Number EPA-600/J-80-032;
Stock Number PB80-220056
Additional Subjects Cadmium ; Toxicology ; Plants(Botany) ; Electron microscopy ; Reprints ; Alnus rubra ; Toxic substances
Holdings
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Status
NTIS  PB80-220056 Most EPA libraries have a fiche copy filed under the call number shown. Check with individual libraries about paper copy. NTIS 06/23/1988
Collation 25p
Abstract Alnus rubra (Bong.) was grown for three months in a greenhouse and given 0, 6, 12, 31 and 62 migrograms cadmium/liter of nitrogen-free nutrient solution for 11 weeks. Segments of nodules and secondary roots were collected from plants grown at the different Cd levels. Thin sections were made for transmission electron microscopy and the ultrastructure of root and nodule cells was then investigated. Endophyte resorption advanced in the nodules ad the number of starch grains in root xylem parenchyma cells tripled as the cadmium concentrations increased from 12 to 62 micrograms/liter of nutrient solution. Nucleoli increased in prominence in the nuclei of the root xylem parenchyma cells as the cadmium concentration in the nutrient solution was raised from 12 to 62 micrograms/liter. Observations of root and nodule cell ultrastructure of Alnus rubra suggest that cadmium exerts its toxic effect in roots and nodules by decreasing the number of endophyte structures capable of fixing nitrogen and reducing the rate of respiration and growth by hose plant cells.
Supplementary Notes Pub. in Environmental Pollution (Series A) 21, p287-306 1980. Prepared in cooperation with Oregon State Univ., Corvallis. Lab. for Nitrogen Fixation Research.
NTIS Title Notes Journal article.
Title Annotations Reprint: Effect of Cadmium on the Root and Nodule Ultrastructure of 'Alnus rubra'.
PUB Date Free Form 1980
Category Codes 6T; 6C; 57Y; 57C
NTIS Prices PC A02/MF A01
Primary Description 600/02
Document Type NT
Cataloging Source NTIS/MT
Control Number 323784302
Origin NTIS
Type CAT