Phytophthora heterospora sp. nov., a New Pseudoconidia-Producing Sister Species of P. palmivora
The result's identifiers
Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F62156489%3A43410%2F21%3A43920487" target="_blank" >RIV/62156489:43410/21:43920487 - isvavai.cz</a>
Result on the web
<a href="https://doi.org/10.3390/jof7100870" target="_blank" >https://doi.org/10.3390/jof7100870</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.3390/jof7100870" target="_blank" >10.3390/jof7100870</a>
Alternative languages
Result language
angličtina
Original language name
Phytophthora heterospora sp. nov., a New Pseudoconidia-Producing Sister Species of P. palmivora
Original language description
Since 1999, an unusual Phytophthora species has repeatedly been found associated with stem lesions and root and collar rot on young olive trees in Southern Italy. In all cases, this species was obtained from recently established commercial plantations or from nursery plants. Morphologically, the Phytophthora isolates were characterized by the abundant production of caducous non-papillate conidia-like sporangia (pseudoconidia) and caducous papillate sporangia with a short pedicel, resembling P. palmivora var. heterocystica. Additional isolates with similar features were obtained from nursery plants of Ziziphus spina-christi in Iran, Juniperus oxycedrus and Capparis spinosa in Italy, and mature trees in commercial farms of Durio zibethinus in Vietnam. In this study, morphology, breeding system and growth characteristics of these Phytophthora isolates with peculiar features were examined, and combined mitochondrial and nuclear multigene phylogenetic analyses were performed. The proportion between pseudoconidia and sporangia varied amongst isolates and depended on the availability of free water. Oogonia with amphigynous antheridia and aplerotic oospores were produced in dual cultures with an A2 mating type strain of P. palmivora, indicating all isolates were A1 mating type. Phylogenetically, these isolates grouped in a distinct well-supported clade sister to P. palmivora; thus, they constitute a separate taxon. The new species, described here as Phytophthora heterospora sp. nov., proved to be highly pathogenic to both olive and durian plants in stem inoculation tests.
Czech name
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Czech description
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Classification
Type
J<sub>imp</sub> - Article in a specialist periodical, which is included in the Web of Science database
CEP classification
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OECD FORD branch
10612 - Mycology
Result continuities
Project
<a href="/en/project/EF15_003%2F0000453" target="_blank" >EF15_003/0000453: Phytophthora Research Centre</a><br>
Continuities
P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)
Others
Publication year
2021
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů
Data specific for result type
Name of the periodical
Journal of Fungi
ISSN
2309-608X
e-ISSN
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Volume of the periodical
7
Issue of the periodical within the volume
10
Country of publishing house
CH - SWITZERLAND
Number of pages
20
Pages from-to
870
UT code for WoS article
000716963700001
EID of the result in the Scopus database
2-s2.0-85118144754