Abstract
During 2015, marginal scorch symptoms were detected in the production base of indigowoad rootin Hubei, China. On the basis of morphological features and 18S rDNA sequences, the pathogen was identified as Cladosporium sp. Koch’s postulates were fulfilled by pathogenicity tests on potted indigowoad root seedlings. To our knowledge, this report is the first of marginal scorch on indigowoad root caused by Cladosporium sp. We propose the name “marginal scorch” for the new disease.
Highlights
During 2015, marginal scorch symptoms were detected in the production base of indigowoad rootin Hubei, China
The symptom of the marginal scorch for indigowoad root was observed in the Wuhan City andShennongjia Forestry District, Hubei Province, China (Figure 1(a))
The pathogens were isolated by tissue segment method on potato dextrose agarmedium [3]
Summary
During 2015, marginal scorch symptoms were detected in the production base of indigowoad rootin Hubei, China. Indigowoad root (Isatis tinctoria) is one of the most well-konwn approved prescription remedies and is frequently used as an anti-leukemia, antipyretic, anti-inflammatory and anti-virus agent [1]. A compound from indigowoad root granules has been accredited as antiviral agent against influenza virus [2]. The fresh leaves are used as a vegetable. As there is more demand for healthy and nutritional life style, the medial role of indigowoad root will get more attention in future.
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