Unraveling the Life Cycle of Nyssopsora cedrelae : A Study of Rust Diseases on Aralia elata and Toona sinensis

Rust disease poses a major threat to global agriculture and forestry. It is caused by types of Pucciniales, which often require alternate hosts for their life cycles. was previously identified as a rust pathogen on in East and Southeast Asia. Although this species had been reported to be autoecious,...

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Bibliographic Details
Published in:Journal of fungi (Basel) 2024-03, Vol.10 (4), p.239
Main Authors: Lee, Jae Sung, Kakishima, Makoto, Park, Ji-Hyun, Shin, Hyeon-Dong, Choi, Young-Joon
Format: Article
Language:English
Subjects:
Aeciospores
alternate host
Aralia elata
Disease
Inoculation
Korean angelica tree
Leaves
Life cycles
Mitochondrial DNA
Morphology
Phylogenetics
Puccinia caricis-araliae
Pucciniales
Rust fungi
Toona
Trees
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Summary:Rust disease poses a major threat to global agriculture and forestry. It is caused by types of Pucciniales, which often require alternate hosts for their life cycles. was previously identified as a rust pathogen on in East and Southeast Asia. Although this species had been reported to be autoecious, completing its life cycle solely on , we hypothesized that it has a heteroecious life cycle, requiring an alternate host, since the spermogonial and aecial stages on , a plant native to East Asia, are frequently observed around the same area where causes rust disease on . Upon collecting rust samples from both and , we confirmed that the rust species from both tree species exhibited matching internal transcribed spacer (ITS), large subunit (LSU) rDNA, and cytochrome oxidase subunit III (CO3) mtDNA sequences. Through cross-inoculations, we verified that aeciospores from produced a uredinial stage on . This study is the first report to clarify as an alternate host for , thus providing initial evidence that the species exhibits a heteroecious life cycle.
ISSN:2309-608X
2309-608X
DOI:10.3390/jof10040239