Abstract
In June 2010 and March 2012, busy lizzie (Impatiens sultanii) plants in a glasshouse in Yamagata Prefecture and in nurseries in a plastic house in Shimane Prefecture, Japan were observed with yellowing of the adaxial surface of leaves or cotyledons and a white downy growth on the abaxial surface of leaves or cotyledons. We identified the causal pathogen as Plasmopara obducens based on the morphologies and rDNA-large subunit sequences. This new disease was named “downy mildew of busy lizzie” in Japan.
This is a preview of subscription content, log in via an institution to check access.
References
Bulajić A, Vučurović A, Stanković I, Ristić D, Jović J, Stojković B, Krstić B (2011) First report of Plasmopara obducens on Impatiens walleriana in Serbia. Plant Dis 95:491
Constantinescu O (1991) Bremiella sphaerosperma sp. nov. and Plasmopara borreriae comb. nov. Mycologia 83:473–479
Cunnington JH, Aldaoud R, Loh M, Washington WS, Irvine G (2008) First record of Plasmopara obducens (downy mildew) on impatiens in Australia. Plant Pathol 57:371
Farr DF, Bills GF, Chamuris GP, Rossman AY (1989) Fungi on plants and plant products in the United States. APS Press, St. Paul
Ito S (1936) Mycological flora of Japan, vol 1. Phycomycetes (in Japanese). Yokendo, Tokyo, pp 163–164
Jörstad I (1964) The phycomycetous genera Albugo, Bremia, Plasmopara and Pseudoperonospora in Norway, with an appendix containing unpublished finds of Peronospora. Nytt Magasin Botanikk 11:47–82
Kageyama K, Komatsu T, Suga H (2003) Refined PCR protocol for detection of plant pathogens in soil. J Gen Plant Pathol 69:153–160
Lane CR, Beales PA, O’Neill TM, McPherson GM, Finlay AR, David J, Constantinescu O, Henricot B (2005) First report of impatiens downy mildew (Plasmopara obducens) in the UK. Plant Pathol 54:243
O’Donnell K (1992) Ribosomal DNA internal transcribed spacers are highly divergent in the phytopathogenic ascomycete Fusarium sambucinum (Gibberella pulicaris). Curr Genet 22:213–220
Petróczy M, Csejk Gy, Palkovics L (2012) First report of Plasmopara obducens causing downy mildew on Impatiens walleriana in Hungary. Plant Dis 96:148
Phytopathological Society of Japan, National Institute of Agrobiological Sciences (eds) (2012) Common names of plant diseases in Japan, 2nd edn. Phase Out Inc., Nagoya
Satou M, Sugawara K, Matsushita Y (2011) Downy mildew of Impatiens sultanii caused by Plasmopara obducens (Abstract in Japanese). Jpn J Phytopathol 77:167
Shimizu T, Asayama E (1989) Impatiens L. In: Hotta M, Ogata K, Nitta A, Hoshikawa K, Yanagi M, Yamazaki K (eds) Useful plants of the world (in Japanese). Heibonsha, Tokyo, pp 551–552
Toppe B, Brurberg MB, Stensvand A, Herrero ML (2010) First report of Plasmopara obducens (downy mildew) on Impatiens walleriana in Norway. Plant Pathol 59:800
Voglmayr H, Thines M (2007) Phylogenetic relationships and nomenclature of Bremiella sphaerosperma (Chromista, Peronosporales). Mycotaxon 100:11–20
Wegulo SN, Koike ST, Vilchez M, Santos P (2004) First report of downy mildew caused by Plasmopara obducens on impatiens in California. Plant Dis 88:909
Author information
Authors and Affiliations
Corresponding author
Additional information
Part of this paper has been presented elsewhere by Satou et al. (2011).
The reported nucleotide sequence data are available from the DDBJ/EMBL/GenBank databases as accessions AB729114 and AB729115.
Rights and permissions
About this article
Cite this article
Satou, M., Sugawara, K., Nagashima, S. et al. Downy mildew of busy lizzie caused by Plasmopara obducens in Japan. J Gen Plant Pathol 79, 205–208 (2013). https://doi.org/10.1007/s10327-013-0437-7
Received:
Accepted:
Published:
Issue Date:
DOI: https://doi.org/10.1007/s10327-013-0437-7