Re‐evaluation of Armillaria and Desarmillaria in South Korea based on ITS / tef 1 sequences and morphological characteristics
Abstract Fungal species in the genera Armillaria and Desarmillaria (Physalacriaceae, Agaricales) are well known for their symbiotic relationships with Gastrodia elata and Polyporus umbellatus , important components of traditional medicine in Asia. In addition, some species in these genera cause Armi...
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Published in | Forest pathology = Journal de pathologie forestière = Zeitschrift für Forstpathologie Vol. 48; no. 6 |
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Main Authors | , , , , , , , , , , |
Format | Journal Article |
Language | English |
Published |
01.12.2018
|
Online Access | Get full text |
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Summary: | Abstract
Fungal species in the genera
Armillaria
and
Desarmillaria
(Physalacriaceae, Agaricales) are well known for their symbiotic relationships with
Gastrodia elata
and
Polyporus umbellatus
, important components of traditional medicine in Asia. In addition, some species in these genera cause Armillaria root disease, which has had a negative economic impact by damaging and destroying urban, horticultural and forest trees. Five species within
Armillaria
and
Desarmillaria
have been previously reported in South Korea, based primarily on basidioma morphology:
A
.
cepistipes
,
A
.
gallica
,
A
.
mellea
,
A
.
ostoyae
and
D
.
tabescens
(reported as
A
.
tabescens
). This study re‐evaluated 60 specimens of
Armillaria
and
Desarmillaria
using morphological features and molecular phylogenetic analyses of the
ITS
and partial translation elongation factor‐1α (
tef
1) sequences. In addition, spatial distributions of each
Armillaria
and
Desarmillaria
species in South Korea were determined from combined data based on basidioma collections and environmental
DNA
(
eDNA
). Six species (
A
.
cepestipes
,
A
.
gallica
,
A
.
mellea
,
A
.
nabsnona
,
A
.
ostoyae
and
D
.
tabescens
) and three lineages of
A
.
gallica
(
A
.
gallica
clade 1–3) were identified in South Korea from both specimens and
eDNA
. Most of the basidioma specimens used in this study were previously identified as
A
.
mellea
; however, in this study, no basidioma specimens were identified as
A
.
mellea
, although this species was detected on Jeju Island from
eDNA
samples. The detection of
A. nabsnona
was a new report for South Korea. Consistent with previous phylogenetic studies, the
tef
1 analysis had better resolution than the
ITS
analysis. These distribution data of
Armillaria
and
Desarmillaria
species will contribute to better management of Armillaria root disease as well as cultivation of
G. elata
and
P. umbellatus
in South Korea. |
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ISSN: | 1437-4781 1439-0329 |
DOI: | 10.1111/efp.12447 |