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Title: Influence of long-term low levels of ozone on the leaf surface mycoflora of pinto bean plants

Abstract

Pinto bean plants (Phaseols vulgaris strain 111) were grown for 4, 7, 14, 21, or 28 days in greenhouses containing ambient air charcoal-filtered air or ozone at 6 pphm for 8 hr/day. Ozone was produced with a Welbach generator and monitored with Mast meters. The upper and lower surfaces of the first set of simple true leaves were used to make leaf prints on acidified potato-dextrose agar plates (PDA) at each sampling period. Discs cut from these leaves were washed 10 times in sterile water and plated on PDA. Results with leaf prints showed that species of 25 genera of fungi were present in recognizable successions on all leaves. The number of fungi per cm/sup 2/ leaf tissue increased with leaf age for all leaves, with the greatest number occurring on 28-day-old leaves with accumulated ozone flecks. Differences between leaves by sources was more quantitative than qualitative, with the exception of Aspergillus niger, which was common only on the leaves of plants grown in ambient air. Botrytis cincrea was commonly found on plates printed with leaves that had ozone fleck. Isolates of Candida, Cryptococcus, and Penicillium were the most abundant fungi on all leaves. Similar results were obtained with platedmore » washed leaf discs except that the number of fungi genera present was reduced from 25 to 11.« less

Authors:
;
Publication Date:
Research Org.:
Univ. of Massachusetts, Waltham
OSTI Identifier:
5319529
Resource Type:
Journal Article
Journal Name:
Phytopathology; (United States)
Additional Journal Information:
Journal Volume: 62:5
Country of Publication:
United States
Language:
English
Subject:
63 RADIATION, THERMAL, AND OTHER ENVIRON. POLLUTANT EFFECTS ON LIVING ORGS. AND BIOL. MAT.; FUNGI; INFECTIVITY; OZONE; TOXICITY; PHASEOLUS; PLANT DISEASES; AGE DEPENDENCE; AIR POLLUTION; BIOLOGICAL VARIABILITY; CONTROLLED ATMOSPHERES; LEAVES; ATMOSPHERES; LEGUMINOSAE; PLANTS; POLLUTION; 560303* - Chemicals Metabolism & Toxicology- Plants- (-1987)

Citation Formats

Manning, W J, and Papia, P M. Influence of long-term low levels of ozone on the leaf surface mycoflora of pinto bean plants. United States: N. p., 1972. Web.
Manning, W J, & Papia, P M. Influence of long-term low levels of ozone on the leaf surface mycoflora of pinto bean plants. United States.
Manning, W J, and Papia, P M. 1972. "Influence of long-term low levels of ozone on the leaf surface mycoflora of pinto bean plants". United States.
@article{osti_5319529,
title = {Influence of long-term low levels of ozone on the leaf surface mycoflora of pinto bean plants},
author = {Manning, W J and Papia, P M},
abstractNote = {Pinto bean plants (Phaseols vulgaris strain 111) were grown for 4, 7, 14, 21, or 28 days in greenhouses containing ambient air charcoal-filtered air or ozone at 6 pphm for 8 hr/day. Ozone was produced with a Welbach generator and monitored with Mast meters. The upper and lower surfaces of the first set of simple true leaves were used to make leaf prints on acidified potato-dextrose agar plates (PDA) at each sampling period. Discs cut from these leaves were washed 10 times in sterile water and plated on PDA. Results with leaf prints showed that species of 25 genera of fungi were present in recognizable successions on all leaves. The number of fungi per cm/sup 2/ leaf tissue increased with leaf age for all leaves, with the greatest number occurring on 28-day-old leaves with accumulated ozone flecks. Differences between leaves by sources was more quantitative than qualitative, with the exception of Aspergillus niger, which was common only on the leaves of plants grown in ambient air. Botrytis cincrea was commonly found on plates printed with leaves that had ozone fleck. Isolates of Candida, Cryptococcus, and Penicillium were the most abundant fungi on all leaves. Similar results were obtained with plated washed leaf discs except that the number of fungi genera present was reduced from 25 to 11.},
doi = {},
url = {https://www.osti.gov/biblio/5319529}, journal = {Phytopathology; (United States)},
number = ,
volume = 62:5,
place = {United States},
year = {Sat Jan 01 00:00:00 EST 1972},
month = {Sat Jan 01 00:00:00 EST 1972}
}