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@ARTICLE{Kia:189836,
author = {Kia, Sevda Haghi and Schulz, Margot and Ayah, Emmanuel and
Schouten, Alexander and Muellenborn, Carmen and Paetz,
Christian and Schneider, Bernd and Hofmann, Diana and Disko,
Ulrich and Tabaglio, Vincenzo and Marocco, Adriano},
title = {{A}butilon theophrasti’s {D}efense {A}gainst the
{A}llelochemical{B}enzoxazolin-2(3{H})-{O}ne: {S}upport by
{A}ctinomucor elegans},
journal = {Journal of chemical ecology},
volume = {40},
issn = {0098-0331},
address = {New York, NY [u.a.]},
publisher = {Springer Science + Business Media B.V.},
reportid = {FZJ-2015-02846},
pages = {1286-1298},
year = {2014},
abstract = {Abutilon theophrasti Medik., previously found tobe rather
insensitive to benzoxazinoid containing rye mulchand the
allelochemical benzoxazolin-2(3H)-one (BOA), canbe
associated with the zygomycete Actinomucor elegans,whereby
the fungus colonizes the root relatively superficiallyand
mainly in the maturation zone. The fungus mitigatesnecrosis
of the cotyledons when seedlings are incubated with2 mMBOA,
in contrast to those that lack the fungus. In liquidcultures
of the fungus, tryptophan was identified. The accumulationof
tryptophan is increased in presence of BOA. Thisamino acid
seems to be important in protecting Abutilonagainst BOA and
its derivatives since it suppressed the accumulationof BOA
derived, highly toxic 2-aminophen-oxazin-3-one (APO) in the
medium and on the root surface duringBOA incubations of
Abutilon seedlings. Although A. elegansis insensitive to BOA
and APO, the fungus is not able toprotect the plant against
harmful effects of APO, when seedlingsare treated with the
compound. Abutilon can detoxifyBOA via BOA-6-OH
glucosylation probably by a cell wallassociated
glucosyltransferase, but only low amounts of theproduct
accumulate. Low tryptophan concentrations can contributeto a
degradation of the toxic intermediate BOA-6-OHby Fenton
reactions, whereby the amino acid is oxidized. Oneof the
oxidation products was identified as 4(1H)-quinolinone,which
is the core substructure of the quorum sensing
molecule2-heptyl-3-hydroxy-4-quinolone. The mutualistic
associationof Abutilon theophrasti with Actinomucor elegans
is consideredas opportunistic and facultative. Such
plant-fungus associationsdepend rather likely on
environmental conditions,such as the mode of fertilization.},
cin = {IBG-3},
ddc = {570},
cid = {I:(DE-Juel1)IBG-3-20101118},
pnm = {246 - Modelling and Monitoring Terrestrial Systems: Methods
and Technologies (POF2-246) / 255 - Terrestrial Systems:
From Observation to Prediction (POF3-255)},
pid = {G:(DE-HGF)POF2-246 / G:(DE-HGF)POF3-255},
typ = {PUB:(DE-HGF)16},
UT = {WOS:000346638200017},
doi = {10.1007/s10886-014-0529-7},
url = {https://juser.fz-juelich.de/record/189836},
}