First report of root rot of papaya (<i>Carica papaya</i> L.) caused by <i>Pythium aphanidermatum</i> in Japan
In Saitama Prefecture, green papaya cultivation areas are rapidly increasing. Green papaya is harvested before the fruit is ripe and used as a vegetable. Wilt and root rot were found on 3-month-old papaya plants during the fruiting period in July and August in several fields in Saitama Prefecture in 2022 and 2023. A Pythium sp. was predominantly isolated from diseased tissues and identified as P. aphanidermatum based on morphological characteristics and nucleotide sequences of ITS region of rDNA and coxI genes. This is the first report of P. aphanidermatum causing disease on papaya trees in Japan.
Authors
- Hiroyuki Uga
- Masako Tsujimoto Noguchi (ORCID: https://orcid.org/0000-0001-7298-0376)
- Eisuke Satou
- Koji Nomiyama (ORCID: https://orcid.org/0000-0002-0664-1648)
- Kouichi KOMAKI
- Shigenobu Yoshida (ORCID: https://orcid.org/0000-0001-5105-0807)
- Hiroyuki Sekiguchi
Institutions
- National Agriculture and Food Research Organization (JP)
- Ministry of Agriculture Forestry and Fisheries (KH)
- Saitama Prefectural Industrial Technology Center (JP)
Publication Details
- Journal
- Japanese Journal of Phytopathology
- Published
- 2025-05-25
- DOI
- https://doi.org/10.3186/jjphytopath.91.71
- Primary Topic
- Papaya Research and Applications
- Type
- article
- Field-Weighted Citation Impact
- 0.00