Effects of carbon dioxide and ethylene at the ultrastructural level of abscisson cells

Journal Article · Sat Apr 01 00:00:00 EST 1989 · Plant Physiology, Supplement; (USA)

OSTI ID:6639008

Valdovinos, J G; Lieberman, S J; Jensen, T E ^[1]

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1. Herbert H. Lehman College, Bronx, NY (USA)

A study of the structure of abscission cells of tobacco flower pedicels treated with air, ethylene (ETH), carbon dioxide (CO{sub 2}), and ETH plus CO{sub 2} indicated the following: CO{sub 2} treatment suppressed ETH - increased rough endoplasmic reticula. With both CO{sub 2} and ETH + CO{sub 2} treatments, the following changes were observed: mitochondria appeared less electron dense; greater numbers of Golgi vesicles were present; chloroplasts contained greater numbers of starch granules as well as starch granules of a larger size and interval spacing between thylakoids was increased; vesicles associated with cell walls were increased in number.

• OSTI ID: 6639008
• Journal Information: Plant Physiology, Supplement; (USA), Vol. 89:4; ISSN 0079-2241
• Country of Publication: United States
• Language: English

Related Subjects

63 RADIATION, THERMAL, AND OTHER ENVIRON. POLLUTANT EFFECTS ON LIVING ORGS. AND BIOL. MAT.
CARBON DIOXIDE
BIOLOGICAL EFFECTS
ETHYLENE
PLANT CELLS
ULTRASTRUCTURAL CHANGES
CELL WALL
CHLOROPLASTS
ENDOPLASMIC RETICULUM
MITOCHONDRIA
NICOTIANA
SYNERGISM
TOBACCO
ALKENES
CARBON COMPOUNDS
CARBON OXIDES
CELL CONSTITUENTS
CHALCOGENIDES
HYDROCARBONS
MAGNOLIOPHYTA
MAGNOLIOPSIDA
MORPHOLOGICAL CHANGES
ORGANIC COMPOUNDS
ORGANOIDS
OXIDES
OXYGEN COMPOUNDS
PLANTS
560300* - Chemicals Metabolism & Toxicology