Abstract
White blister rust caused by the obligate biotroph Albugo candida (Albuginaceae; Oomycota) is one of the most notorious and common diseases of Brassicaceae. During the past 5. y, A. candida specimens collected from about 30 host genera were phylogenetically and morphologically investigated in several studies. These not only revealed that A. candida s.str. has a broad host range, encompassing a large number of host plants belonging to Brassicales, but also the presence of previously overlooked species of Albugo with hosts in this order. In this study, we examined specimens from Alyssum, Barbarea, and Rorippa, of which many species were commonly recorded as host plants of A. candida but could not be included in previous works due to the paucity of specimens available. It was revealed that Albugo specimens from Alyssum montanum, Barbarea vulgaris, and various Rorippa species, were placed in three phylogenetically distinct clades, but closer to A. candida s.str. than any previously reported species. Oospores were observed from Albugo specimens parasitic to Rorippa and could be distinguished morphologically from A. candida. Therefore, Albugo rorippae sp. nov. is described and illustrated here. In addition, a key of Albugo species described previously from Brassicales is given. The present study reveals that a large number of Albugo species remain still undiscovered, and that species close to A. candida exist. This could help elucidating the basis of the broad host range of A. candida as opposed to the narrow specialisation that is seemingly present in other species of Albugo on the Brassicaceae.
| Original language | English |
|---|---|
| Pages (from-to) | 598-607 |
| Number of pages | 10 |
| Journal | Fungal Biology |
| Volume | 115 |
| Issue number | 7 |
| DOIs | |
| Publication status | Published - 2011 Jul 1 |
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Keywords
- Albuginales
- Broad species concept
- Host specificity
- Hyaloperonospora
- Morphology
- Obligate biotroph
- Species key
- White blister rust
ASJC Scopus subject areas
- Ecology, Evolution, Behavior and Systematics
- Plant Science
- Genetics
- Infectious Diseases
Cite this
Three new phylogenetic lineages are the closest relatives of the widespread species Albugo candida. / Choi, Young Joon; Shin, Hyeon-Dong; Ploch, Sebastian; Thines, Marco.
In: Fungal Biology, Vol. 115, No. 7, 01.07.2011, p. 598-607.Research output: Contribution to journal › Article
}
TY - JOUR
T1 - Three new phylogenetic lineages are the closest relatives of the widespread species Albugo candida
AU - Choi, Young Joon
AU - Shin, Hyeon-Dong
AU - Ploch, Sebastian
AU - Thines, Marco
PY - 2011/7/1
Y1 - 2011/7/1
N2 - White blister rust caused by the obligate biotroph Albugo candida (Albuginaceae; Oomycota) is one of the most notorious and common diseases of Brassicaceae. During the past 5. y, A. candida specimens collected from about 30 host genera were phylogenetically and morphologically investigated in several studies. These not only revealed that A. candida s.str. has a broad host range, encompassing a large number of host plants belonging to Brassicales, but also the presence of previously overlooked species of Albugo with hosts in this order. In this study, we examined specimens from Alyssum, Barbarea, and Rorippa, of which many species were commonly recorded as host plants of A. candida but could not be included in previous works due to the paucity of specimens available. It was revealed that Albugo specimens from Alyssum montanum, Barbarea vulgaris, and various Rorippa species, were placed in three phylogenetically distinct clades, but closer to A. candida s.str. than any previously reported species. Oospores were observed from Albugo specimens parasitic to Rorippa and could be distinguished morphologically from A. candida. Therefore, Albugo rorippae sp. nov. is described and illustrated here. In addition, a key of Albugo species described previously from Brassicales is given. The present study reveals that a large number of Albugo species remain still undiscovered, and that species close to A. candida exist. This could help elucidating the basis of the broad host range of A. candida as opposed to the narrow specialisation that is seemingly present in other species of Albugo on the Brassicaceae.
AB - White blister rust caused by the obligate biotroph Albugo candida (Albuginaceae; Oomycota) is one of the most notorious and common diseases of Brassicaceae. During the past 5. y, A. candida specimens collected from about 30 host genera were phylogenetically and morphologically investigated in several studies. These not only revealed that A. candida s.str. has a broad host range, encompassing a large number of host plants belonging to Brassicales, but also the presence of previously overlooked species of Albugo with hosts in this order. In this study, we examined specimens from Alyssum, Barbarea, and Rorippa, of which many species were commonly recorded as host plants of A. candida but could not be included in previous works due to the paucity of specimens available. It was revealed that Albugo specimens from Alyssum montanum, Barbarea vulgaris, and various Rorippa species, were placed in three phylogenetically distinct clades, but closer to A. candida s.str. than any previously reported species. Oospores were observed from Albugo specimens parasitic to Rorippa and could be distinguished morphologically from A. candida. Therefore, Albugo rorippae sp. nov. is described and illustrated here. In addition, a key of Albugo species described previously from Brassicales is given. The present study reveals that a large number of Albugo species remain still undiscovered, and that species close to A. candida exist. This could help elucidating the basis of the broad host range of A. candida as opposed to the narrow specialisation that is seemingly present in other species of Albugo on the Brassicaceae.
KW - Albuginales
KW - Broad species concept
KW - Host specificity
KW - Hyaloperonospora
KW - Morphology
KW - Obligate biotroph
KW - Species key
KW - White blister rust
UR - http://www.scopus.com/inward/record.url?scp=79959882044&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=79959882044&partnerID=8YFLogxK
U2 - 10.1016/j.funbio.2011.02.006
DO - 10.1016/j.funbio.2011.02.006
M3 - Article
C2 - 21724165
AN - SCOPUS:79959882044
VL - 115
SP - 598
EP - 607
JO - Fungal Biology
JF - Fungal Biology
SN - 1878-6146
IS - 7
ER -