Identity and pathogenicity of Fusarium species associated with crown rot on wheat (Triticum spp.) in Turkey
An extensive survey was carried out to collect Fusarium species colonizing the lower stems (crowns) of bread wheat ( Triticum aestivum L.) and durum wheat ( T. durum Desf.) from different wheat growing regions of Turkey in summer 2013. Samples were collected from 200 fields representing the major wh...
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Published in | European journal of plant pathology Vol. 150; no. 2; pp. 387 - 399 |
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Main Authors | , , , , , |
Format | Journal Article |
Language | English |
Published |
Dordrecht
Springer Netherlands
01.02.2018
Springer Nature B.V |
Subjects | |
Online Access | Get full text |
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Summary: | An extensive survey was carried out to collect
Fusarium
species colonizing the lower stems (crowns) of bread wheat (
Triticum aestivum
L.) and durum wheat (
T. durum
Desf.) from different wheat growing regions of Turkey in summer 2013. Samples were collected from 200 fields representing the major wheat cultivation areas in Turkey, and fungi were isolated from symptomatic crowns. The isolates were identified to species level by sequencing the translation elongation factor 1-alpha (TEF1-α) gene region using primers ef1 and ef2. A total of 339 isolates representing 17
Fusarium
species were isolated. The isolates were identified as
F. culmorum, F. pseudograminearum, F. graminearum, F. equiseti, F. acuminatum, F. brachygibbosum, F. hostae, F. redolens, F. avenaceum, F. oxysporum, F. torulosum, F. proliferatum, F. flocciferum, F. solani, F. incarnatum, F. tricinctum
and
F. reticulatum. Fusarium equiseti
was the most commonly isolated species, accounting for 36% of the total
Fusarium
species isolated. Among the damaging species,
F. culmorum
was the predominant species being isolated from 13.6% of sites surveyed while
F
.
pseudograminearum
and
F
.
graminearum
were isolated only from 1% and 0.5% of surveyed sites, respectively. Six out of the 17
Fusarium
species tested for pathogenicity caused crown rot with different levels of severity.
Fusarium culmorum
,
F. pseudograminearum
and
F. graminearum
caused severe crown rot disease on durum wheat.
Fusarium avenaceum
and
F. hostae
were weakly to moderately virulent
. Fusarium redolens
was weakly virulent. However,
F. oxysporum
,
F. equiseti
,
F. solani
,
F. incarnatum
,
F. reticulatum, F. flocciferum, F. tricinctum, F. brachygibbosum, F. torulosum, F. acuminatum
and
F. proliferatum
were non-pathogenic. The result of this study reveal the existence of a wide range of
Fusarium
species associated with crown rot of wheat in Turkey. |
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ISSN: | 0929-1873 1573-8469 |
DOI: | 10.1007/s10658-017-1285-7 |