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Effects of fluoride and 6 benzylaminopurine on growth and respiration of corn and cotton roots

Abstract

Corn and cotton plants exhibit a wide difference in their susceptibility to atmospheric fluoride. Corn shows leaf lesions when 100 ..gamma../gm on a dry weight basis are accumulated but cotton can tolerate 5000 ..gamma../gm without showing leaf necrosis. A comparison of respirational response of potted seedlings of the two species to 10 ..gamma../M/sup 3/ HF caused an increase of about 10%. Addition of 2 x 10/sup 2/M F/sup -/ to solutions for germinating the plants showed that cotton accumulated about twice as much as F/sup -/ in seedling roots. Growth was reduced about one half by 2 x 10/sup -3/M F/sup -/ in both species but respirational rates of root tips from control and fluoride treated tissues were equal. Prolonged treatment of excised root tips with fluoride reduced respiration. Because fluoride causes cellular changes in roots similar to aging and kinetin seems to act to reverse these changes, corn was germinated with 2 x 10/sup -3/M F/sup -/ and increasing levels of 6-benzylaminopurine. Root growth inhibition (63%) was reversed significantly at 0.2 - 0.8..gamma.. ml. Respirational rates of root tips grown in fluoride, fluoride plus 6-benzylaminopurine and controls were equal.
Authors:
Publication Date:
Jan 01, 1967
Product Type:
Conference
Report Number:
CONF-670856-
Reference Number:
EDB-85-142514
Resource Relation:
Conference: 7. international congress of biochemistry, Tokyo, Japan, 19 Aug 1967
Subject:
63 RADIATION, THERMAL, AND OTHER ENVIRON. POLLUTANT EFFECTS ON LIVING ORGS. AND BIOL. MAT.; ADENINES; TOXICITY; COTTON PLANTS; SENSITIVITY; FLUORIDES; LEAVES; NECROSIS; MAIZE; PLANT GROWTH; INHIBITION; RESPIRATION; AIR POLLUTION; ROOTS; SEEDLINGS; AMINES; ANTIMETABOLITES; AROMATICS; AZAARENES; CEREALS; DRUGS; FLUORINE COMPOUNDS; GRASS; GROWTH; HALIDES; HALOGEN COMPOUNDS; HETEROCYCLIC COMPOUNDS; ORGANIC COMPOUNDS; ORGANIC NITROGEN COMPOUNDS; PATHOLOGICAL CHANGES; PLANTS; POLLUTION; PURINES; 560303* - Chemicals Metabolism & Toxicology- Plants- (-1987)
OSTI ID:
5434575
Country of Origin:
Japan
Language:
English
Submitting Site:
HEDB
Size:
Pages: v
Announcement Date:

Citation Formats

Thompson, C R. Effects of fluoride and 6 benzylaminopurine on growth and respiration of corn and cotton roots. Japan: N. p., 1967. Web.
Thompson, C R. Effects of fluoride and 6 benzylaminopurine on growth and respiration of corn and cotton roots. Japan.
Thompson, C R. 1967. "Effects of fluoride and 6 benzylaminopurine on growth and respiration of corn and cotton roots." Japan.
@misc{etde_5434575,
title = {Effects of fluoride and 6 benzylaminopurine on growth and respiration of corn and cotton roots}
author = {Thompson, C R}
abstractNote = {Corn and cotton plants exhibit a wide difference in their susceptibility to atmospheric fluoride. Corn shows leaf lesions when 100 ..gamma../gm on a dry weight basis are accumulated but cotton can tolerate 5000 ..gamma../gm without showing leaf necrosis. A comparison of respirational response of potted seedlings of the two species to 10 ..gamma../M/sup 3/ HF caused an increase of about 10%. Addition of 2 x 10/sup 2/M F/sup -/ to solutions for germinating the plants showed that cotton accumulated about twice as much as F/sup -/ in seedling roots. Growth was reduced about one half by 2 x 10/sup -3/M F/sup -/ in both species but respirational rates of root tips from control and fluoride treated tissues were equal. Prolonged treatment of excised root tips with fluoride reduced respiration. Because fluoride causes cellular changes in roots similar to aging and kinetin seems to act to reverse these changes, corn was germinated with 2 x 10/sup -3/M F/sup -/ and increasing levels of 6-benzylaminopurine. Root growth inhibition (63%) was reversed significantly at 0.2 - 0.8..gamma.. ml. Respirational rates of root tips grown in fluoride, fluoride plus 6-benzylaminopurine and controls were equal.}
place = {Japan}
year = {1967}
month = {Jan}
}