Reduction in mitotic index in Pisum sativum root meristems by pulsed ultrasound irradiation

Journal Article · Mon Mar 01 04:00:00 EST 1976 · Radiat. Res.; (United States)

DOI:https://doi.org/10.2307/3574377· OSTI ID:7282540

Arcuri, K B; Pizzutiello, R J; Miller, M W; Kaufman, G E; Carstensen, E L

The effect of continuous-wave and pulsed 2 MHz ultrasound at an intensity of 10 W/cm/sup 2/ on the mitotic index of Pisum sativum root meristems was investigated. The duty factor of the pulses was 1 on to 9 off, and the on times ranged from 1 min to 3 ..mu..sec. In all cases the total irradiation (''on'') time was 1 min. The ultrasound produced a reduction in the mitotic index at all pulse lengths. The shorter pulse lengths (3 and 10 ..mu..sec) were less effective in reducing mitotic index than were the longer pulse lengths. Acoustic cavitation is suggested as a mechanism partially causing this nonthermal effect. (auth)

• Research Organization: Univ. of Rochester, NY
• OSTI ID: 7282540
• Journal Information: Radiat. Res.; (United States), Journal Name: Radiat. Res.; (United States) Vol. 65:3; ISSN RAREA
• Country of Publication: United States
• Language: English

Related Subjects

560141* -- Radiation Effects on Plants-- Basic Studies-- (-1987)
63 RADIATION, THERMAL, AND OTHER ENVIRON. POLLUTANT EFFECTS ON LIVING ORGS. AND BIOL. MAT.
BIOLOGICAL EFFECTS
BIOLOGICAL RADIATION EFFECTS
BIOMASS
CELL DIVISION
ENERGY SOURCES
IRRADIATION
LEGUMINOSAE
MERISTEMS
MITOSIS
PISUM
PLANT TISSUES
PLANTS
PULSES
RADIATION EFFECTS
RENEWABLE ENERGY SOURCES
ROOTS
SOUND WAVES
TIME DEPENDENCE
ULTRASONIC WAVES