Marginal scorch caused by Alternaria alternata on Purple-Caitai (Brassia campestris L. ssp. chinensis L.var. utilis Tsen et Lee) in China

  • Qijun Nie
  • Zhongjiu Jiao
  • Fengjuan Zhu
  • Zhenbiao Jiao
  • Xiaohui Deng
  • Zhengming Qiu
  • Jinping Wu

Abstract

A new disease was detected in Purple-Caitai (Brassia campestris L. ssp. chinensis L.var. utilis Tsen et Lee) on the high mountain in Hubei, China. On the basis of morphological and cultural features, the pathogen was identified as Alternaria alternata. The internal transcribed spacer (ITS)-rDNA sequence of a representative Alternaria isolate from Purple-Caitai showed 99% identity with other ITS sequences of different Alternaria alternata isolates available in GenBank, thus confirming the morpho-cultural identification. Koch′s postulates were fulfilled by pathogenicity tests on potted Purple-Caitai seedlings. To our knowledge, this report is the first of marginal scorch on Purple-Caitai caused by Alternaria alternata.

Keywords: Purple-Caitai, marginal scorch, Alternaria alternata

African Journal of Biotechnology Vol. 12(6), pp. 544-546

Author Biographies

Qijun Nie
Institute Industrial Crops, Hubei Academy of Agricultural Sciences, Wuhan 430064, China
Zhongjiu Jiao
Institute Industrial Crops, Hubei Academy of Agricultural Sciences, Wuhan 430064, China
Fengjuan Zhu
Institute Industrial Crops, Hubei Academy of Agricultural Sciences, Wuhan 430064, China
Zhenbiao Jiao
Institute Industrial Crops, Hubei Academy of Agricultural Sciences, Wuhan 430064, China
Xiaohui Deng
Institute Industrial Crops, Hubei Academy of Agricultural Sciences, Wuhan 430064, China
Zhengming Qiu
Institute Industrial Crops, Hubei Academy of Agricultural Sciences, Wuhan 430064, China
Jinping Wu
Institute Industrial Crops, Hubei Academy of Agricultural Sciences, Wuhan 430064, China
Published
2015-12-03
Section
Articles

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eISSN: 1684-5315