Abstract
In November 2008, typical powdery mildew symptoms were observed on leaves of Arabidopsis thaliana ecotype Col-0 plants in a growth room under controlled laboratory conditions at Korea University, Seoul. The disease was characterized by the appearance of white powder-like fungal growth on the surface of infected leaves. As the disease progressed, infected leaves exhibited chlorotic or necrotic brown lesions, and leaf distortion and senescence. Conidiophores of the causal fungus were hyaline, unbranched, 3-4 celled, cylindrical, and 80-115×6-9 μm in size. Singly produced conidia (pseudoidium type) were hyaline, oblong to cylindrical or oval in shape, and 26-55 × 15-20 μm in size with a length/width ratio of average 3, angular/rectangular wrinkling of outer wall and no distinct fîbrosin bodies. Appressoria on the hyphae were multi-lobed. These structures are typical of the powdery mildew Oidium subgenus Pseudoidium, ana-morph of the genus Erysiphe. The measurements of the fungal structures coincided with those of Erysiphe cruciferarum. The phylogenetic analysis using ITS rDNA sequences revealed that the causal fungus Erysiphe sp. KUS-F23994 is identical to E. cruciferarum. The isolated fungus incited powdery mildew symptoms on the inoculated Arabidopsis leaves, which proved Koch's postulates. Taken all data together, we first report the occurrence of powdery mildew disease of A. thaliana caused by Erysiphe cruciferarum in Korea.
| Original language | English |
|---|---|
| Pages (from-to) | 86-90 |
| Number of pages | 5 |
| Journal | Plant Pathology Journal |
| Volume | 25 |
| Issue number | 1 |
| DOIs | |
| Publication status | Published - 2009 Dec 1 |
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Keywords
- Arabidopsis thaliana
- Erysiphe cruciferarum
- Pathogenicity
- Powdery mildew
ASJC Scopus subject areas
- Agronomy and Crop Science
Cite this
First report of powdery mildew caused by Erysiphe cruciferarum on Arabidopsis thaliana in Korea. / Choi, Hyong Woo; Choi, Young Jun; Kim, Dae Sung; Hwang, In Sun; Choi, Du Seok; Kim, Nak Hyun; Lee, Dong Hyuk; Shin, Hyeon-Dong; Nam, Jaesung; Hwang, Byung Kook.
In: Plant Pathology Journal, Vol. 25, No. 1, 01.12.2009, p. 86-90.Research output: Contribution to journal › Article
}
TY - JOUR
T1 - First report of powdery mildew caused by Erysiphe cruciferarum on Arabidopsis thaliana in Korea
AU - Choi, Hyong Woo
AU - Choi, Young Jun
AU - Kim, Dae Sung
AU - Hwang, In Sun
AU - Choi, Du Seok
AU - Kim, Nak Hyun
AU - Lee, Dong Hyuk
AU - Shin, Hyeon-Dong
AU - Nam, Jaesung
AU - Hwang, Byung Kook
PY - 2009/12/1
Y1 - 2009/12/1
N2 - In November 2008, typical powdery mildew symptoms were observed on leaves of Arabidopsis thaliana ecotype Col-0 plants in a growth room under controlled laboratory conditions at Korea University, Seoul. The disease was characterized by the appearance of white powder-like fungal growth on the surface of infected leaves. As the disease progressed, infected leaves exhibited chlorotic or necrotic brown lesions, and leaf distortion and senescence. Conidiophores of the causal fungus were hyaline, unbranched, 3-4 celled, cylindrical, and 80-115×6-9 μm in size. Singly produced conidia (pseudoidium type) were hyaline, oblong to cylindrical or oval in shape, and 26-55 × 15-20 μm in size with a length/width ratio of average 3, angular/rectangular wrinkling of outer wall and no distinct fîbrosin bodies. Appressoria on the hyphae were multi-lobed. These structures are typical of the powdery mildew Oidium subgenus Pseudoidium, ana-morph of the genus Erysiphe. The measurements of the fungal structures coincided with those of Erysiphe cruciferarum. The phylogenetic analysis using ITS rDNA sequences revealed that the causal fungus Erysiphe sp. KUS-F23994 is identical to E. cruciferarum. The isolated fungus incited powdery mildew symptoms on the inoculated Arabidopsis leaves, which proved Koch's postulates. Taken all data together, we first report the occurrence of powdery mildew disease of A. thaliana caused by Erysiphe cruciferarum in Korea.
AB - In November 2008, typical powdery mildew symptoms were observed on leaves of Arabidopsis thaliana ecotype Col-0 plants in a growth room under controlled laboratory conditions at Korea University, Seoul. The disease was characterized by the appearance of white powder-like fungal growth on the surface of infected leaves. As the disease progressed, infected leaves exhibited chlorotic or necrotic brown lesions, and leaf distortion and senescence. Conidiophores of the causal fungus were hyaline, unbranched, 3-4 celled, cylindrical, and 80-115×6-9 μm in size. Singly produced conidia (pseudoidium type) were hyaline, oblong to cylindrical or oval in shape, and 26-55 × 15-20 μm in size with a length/width ratio of average 3, angular/rectangular wrinkling of outer wall and no distinct fîbrosin bodies. Appressoria on the hyphae were multi-lobed. These structures are typical of the powdery mildew Oidium subgenus Pseudoidium, ana-morph of the genus Erysiphe. The measurements of the fungal structures coincided with those of Erysiphe cruciferarum. The phylogenetic analysis using ITS rDNA sequences revealed that the causal fungus Erysiphe sp. KUS-F23994 is identical to E. cruciferarum. The isolated fungus incited powdery mildew symptoms on the inoculated Arabidopsis leaves, which proved Koch's postulates. Taken all data together, we first report the occurrence of powdery mildew disease of A. thaliana caused by Erysiphe cruciferarum in Korea.
KW - Arabidopsis thaliana
KW - Erysiphe cruciferarum
KW - Pathogenicity
KW - Powdery mildew
UR - http://www.scopus.com/inward/record.url?scp=84885617921&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=84885617921&partnerID=8YFLogxK
U2 - 10.5423/PPJ.2009.25.1.086
DO - 10.5423/PPJ.2009.25.1.086
M3 - Article
AN - SCOPUS:84885617921
VL - 25
SP - 86
EP - 90
JO - Plant Pathology Journal
JF - Plant Pathology Journal
SN - 1598-2254
IS - 1
ER -