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Journal of Plant Pathology

, Volume 101, Issue 1, pp 161–167 | Cite as

Diaporthe species complex occurring on Asparagus kiusianus in Japan

  • Thao Le DinhEmail author
  • Myo Zaw
  • Masaru Matsumoto
Short Communication
  • 28 Downloads

Abstract

In 2016, a new disease caused by the Diaporthe species complex was discovered in “hamatamabouki”, the Japanese wild asparagus (Asparagus kiusianus Makino), in the coastal area of Northern Kyushu. Two distinct fungal species were recorded as causing the brown and oval-shaped lesions shown by the aerial parts of the plants. Diaporthe asparagi (Phomopsis asparagi) was identified based on molecular analysis of the nuclear ribosomal internal transcribed spacers (ITS), while D. unshiuensis, a first report on the genus Asparagus, was identified using the multi-locus sequence analysis of the ITS region, the translation elongation factor 1-alpha (TEF1-alpha) and the beta-tubulin (TUB) genes. The morphological characteristics of these species were observed, most of which being in accordance with previous descriptions. When A. kiusianus plants were exposed to infection by D. asparagi and D. unshiuensis to fulfill Koch’s postulates, both fungal species proved to be pathogenic.

Keywords

Stem blight Phomopsis asparagi Pathogenicity 

Notes

Acknowledgements

This research was supported by a grant from the Agriculture, Forestry and Fisheries Research Council of Japan (27002B).

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Copyright information

© Società Italiana di Patologia Vegetale (S.I.Pa.V.) 2018

Authors and Affiliations

  1. 1.Graduate School of Integrated Sciences for Global SocietyKyushu UniversityFukuokaJapan
  2. 2.Institute of Tropical AgricultureKyushu UniversityFukuokaJapan

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