Skip to main content

First report of phytophthora rot on Wasabia japonica caused by Phytophthora drechsleri in Japan


In September 2014, Phytophthora rot on wasabi plants [Wasabia japonica (Miq.) Matsum.] was found for the first time in the city of Okutama, Tokyo, Japan. A Phytophthora sp. strain was constantly isolated from brown stem bases and rhizomes of infected plants. The same symptoms as those observed in the field were produced in vitro through inoculation of test plants with the isolated Phytophthora sp. The fungus was identified as Phytophthora drechsleri based on morphological and DNA sequence comparison. Phytophthora rot, “eki-byo” in Japanese, is proposed for this disease common name.

This is a preview of subscription content, access via your institution.

Fig. 1
Fig. 2
Fig. 3


  • Chadwick CI, Lumpkin TA, Elberson LR (1993) The botany, uses and production of Wasabia japonica (Miq.) (Cruciferae) Matsum. Eco Bot 47:113–135

    Article  Google Scholar 

  • Erwin DC, Ribeiro OK (1996) Phytophthora diseases worldwide. APS, St. Paul

    Google Scholar 

  • Granke LL, Harlan BR, Naegele RP, Hausbeck MK (2012) First report of root and crown rot of wasabi (Wasabia japonica Matsum.) caused by Phytophthora cryptogea in Michigan. Plant Dis 96:1379

    Article  Google Scholar 

  • Mostowfizadeh-Ghalamfarsa R, Panabieres F, Banihashemi Z, Cooke DEL (2010) Phylogenetic relationship of Phytophthora cryptogea Pethybr. & Laff and P. drechsleri Tucker. Fungal Biol 114:325–339

    CAS  Article  PubMed  Google Scholar 

  • Rahman MZ, Uematsu S, Coffey MD, Uzuhashi S, Suga H, Kageyama K (2014) Re-evaluation of Japanese Phytophthora isolates based on molecular phylogenetic analyses. Mycoscience 55:314–327

    CAS  Article  Google Scholar 

  • Robideau GP, de Cock AWAM, Coffey MD, Voglmayr H, Brouwer H, Bala K, Chitty DW, Désaulniers N, Eggertson QA, Gachon CMM, Hu C-H, Küpper FC, Rintoul TL, Sarhan E, Verstappen ECP, Zhang Y, Bonants PJM, Ristaino JB, Lévesque CA (2011) DNA barcoding of oomycetes with cytochrome c oxidase subunit I and internal transcribed spacer. Mol Ecol Resour 11:1002–1011

    CAS  Article  PubMed  PubMed Central  Google Scholar 

  • Stamatakis A, Hoover P, Rougemont J (2008) A rapid bootstrap algorithm for the RAxML Web servers. Syst Biol 57:758–771

    Article  PubMed  Google Scholar 

  • The Forestry Agency (2014) Title of subordinate document. In: Trend of production of main minor forest products (in Japanese). Ministry of Agriculture, Forestry and Fisheries. Available via DIALOG. of subordinate document. Cited 12 Apr 2016

  • Tucker CM (1931) Taxonomy of the genus Phytophthora de Bary. Univ Mo Agric Exp Stn Res Bull 153:1–208

  • White TJ, Bruns T, Lee S, Taylor JW (1990) Amplification and direct sequencing of fungal ribosomal RNA genes for phylogenetics. In: Innis MA et al (eds) PCR protocols: a guide to methods and applications. Academic, San Diego, pp 315–322

    Google Scholar 

Download references


We thank Drs. Gloria Z. Abad (USDA-APHIS-PPQ Center of Plant Health Science and Technology, USA) and André C. Lévesque (Agriculture and Agri-Food Canada, Ottawa Research and Development Centre, Canada) for valuable comments on this manuscript, and Hideo Hoshi (Agro-Environment Division, Tokyo Metropolitan Agriculture and Forestry Research Center, Japan) for sampling. This work was supported in part by a grant from Yamazaki Spice Promotion Foundation.

Author information

Authors and Affiliations


Corresponding author

Correspondence to Yuuri Hirooka.

Rights and permissions

Reprints and Permissions

About this article

Verify currency and authenticity via CrossMark

Cite this article

Minoshima, A., Takeuchi, J., Ono, T. et al. First report of phytophthora rot on Wasabia japonica caused by Phytophthora drechsleri in Japan. J Gen Plant Pathol 83, 113–116 (2017).

Download citation

  • Received:

  • Accepted:

  • Published:

  • Issue Date:

  • DOI:


  • New disease
  • Phytophthora drechsleri
  • Phytophthora Rot
  • Wasabi
  • Wasabia japonica