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EFFECT OF ETHYLENE ON CELLULAR DIFFERENTIATION IN ETIOLATED PEA SEEDLINGS
Author(s) -
Apelbaum Akiva,
Fisher Jack B.,
Burg Stanley P.
Publication year - 1972
Publication title -
american journal of botany
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.218
H-Index - 151
eISSN - 1537-2197
pISSN - 0002-9122
DOI - 10.1002/j.1537-2197.1972.tb10142.x
Subject(s) - etiolation , ethylene , pisum , biology , sativum , auxin , botany , fiber , horticulture , biochemistry , chemistry , enzyme , organic chemistry , gene , catalysis
Ethylene (50 ppm) and 2,4‐D (1 m m ) inhibit xylogenesis and completely prevent fiber lignification in the third internode of etiolated pea seedlings (Pisum sativum var. Alaska) during 96–240 hr of treatment. When ethylene is removed after 72 hr, normal differentiation resumes; thus the gas causes no irreversible damage to the cells. A combined treatment with 50 ppm ethylene and 50 μ m 2,4‐D or treatment with 1 m m 2,4‐D alone causes inhibition similar to that observed with 50 ppm ethylene, and 50 μ m 2,4‐D is partially effective. The inhibition of xylogenesis and fiber lignification caused by 2,4‐D is partly or wholly due to auxin‐induced ethylene production.