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Phragmites die‐back: sulphide‐ and acetic acid‐induced bud and root death, lignifications, and blockages within aeration and vascular systems
Author(s) -
ARMSTRONG J.,
AFREENZOBAYED F.,
ARMSTRONG W.
Publication year - 1996
Publication title -
new phytologist
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 3.742
H-Index - 244
eISSN - 1469-8137
pISSN - 0028-646X
DOI - 10.1111/j.1469-8137.1996.tb04925.x
Subject(s) - phragmites , rhizome , acetic acid , botany , cutting , callus , phytotoxin , aeration , biology , chemistry , horticulture , biochemistry , ecology , wetland , toxin
summaryPhragmites rhizome cuttings, and plantlets raised from seed, were exposed to the phytotoxins acetic acid or dissolved sulphide in unstirred solution cultures to determine whether die‐back symptoms found in field‐grown plants, and attributed to phytotoxin damage, could be induced. Many of the die‐back symptoms associated with field sites, namely stunted adventitious roots and laterals, bud death, callus blockages of the gas‐pathways, and vascular blockages, were all reproduced, and were particularly acute at the higher concentrations of the phytotoxins: acetic acid (1.67 m m ), sulphide (1.4 m m ). The results accord with the hypothesis that phytotoxins may play a critical role in Phragmites australis die‐back.