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February 19, 2026Plant Disease

First Report of Mango Stem-end Rot caused by Diaporthe hubeiensis in Yunnan Province, China

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Authors

ZHZaiyan HuangTRTao ReizeWXWei Xiang

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Overview

This report identifies Diaporthe hubeiensis as causing stem-end rot in mango, suggesting new control strategies.

Key Points

  • To identify and characterize the cause of stem-end rot in mango fruits, specifically focusing on Diaporthe hubeiensis.
  • Collected 40 mango fruits at 70-80% ripening stage from orchards in Yunnan.
  • Isolated fungal cultures from symptomatic tissues using potato dextrose agar (PDA).
  • Identified fungal isolates using morphological characteristics and DNA sequencing of specific gene regions.
  • Conducted pathogenicity tests by inoculating healthy mango fruits with the pathogenic strain.
  • 28 out of 40 mango fruits showed typical stem-end rot symptoms after 7 days.
  • Identified Diaporthe hubeiensis as the causative agent among three distinct fungal populations.
  • The strain BNJH-2 was confirmed as pathogenic through the inoculation tests, fulfilling Koch's postulates.

Cite This Study

Huang et al. (2026) studied this question.

synapsesocial.com/papers/6996a7b5ecb39a600b3edb20https://doi.org/10.1094/pdis-12-25-2637-pdn
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