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Gray mold of yacon and sunflower caused by Botrytis cinerea

Abstract

Severe wilt and blight of entire plants of yacon (Smallanthus sonchifolius) grafts on sunflower (Helianthus annuus) were found in greenhouses in Kagawa Prefecture in the southwest region of Japan from April to May between 1997 and 1999. A mitosporic fungus, isolated repeatedly from the diseased plants and identified as Botrytis cinerea, was demonstrated to be virulent to both yacon and sunflower. The new disease on yacon was named gray mold of yacon. The disease on sunflower, gray mold of sunflower, is new to Japan.

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Correspondence to Keisuke Tomioka.

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K. Tomioka and T. Sato contributed equally to this work.

Part of this paper has been presented elsewhere by Tomioka et al. (2001, 2009).

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Tomioka, K., Sato, T. Gray mold of yacon and sunflower caused by Botrytis cinerea . J Gen Plant Pathol 77, 217–219 (2011). https://doi.org/10.1007/s10327-011-0309-y

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  • DOI: https://doi.org/10.1007/s10327-011-0309-y

Keywords

  • New disease
  • Gray mold
  • Yacon
  • Sunflower
  • Botrytis cinerea