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

Journal Article · Mon Mar 01 00:00:00 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), Vol. 65:3
• Country of Publication: United States
• Language: English

Related Subjects

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