Nigrospora sphaerica causing Leaf Blight Disease of Cacao in the Philippines

Villanueva, J. D.; Solpot, Tamie C.; Tangonan, N.G.

doi:10.1007/s42360-023-00653-6

Cited by 4 publications

(1 citation statement)

References 13 publications

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“…In (Akrofi et al, 2015;Asare et al, 2021;Huda-Shakirah et al, 2022;Huda-Shakirah & Mohd, 2023;Puig et al, 2021;Serrato-Diaz et al, 2020Suryanto et al, 2014;Villanueva et al, 2023).…”

Section: Pathogenicity Testunclassified

Morphology, phylogeny and pathogenicity of fungal species associated with leaf blight and stem canker of Theobroma cacao in Malaysia

Huda‐Shakirah,

Zakaria,

Mohd

2024

Plant Pathology

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Malaysia stands prominently among Asia's key cocoa‐producing countries. In the cocoa season of 2022–2023, Malaysia demonstrated its contribution to the industry, with an estimated production of around 364,000 tonnes of cacao bean grindings. Nonetheless, fungal diseases pose undeniable challenges to the cocoa sector. Extensive sampling conducted between September 2018 and March 2019 across multiple states in Malaysia revealed concerning symptoms of leaf blight and stem canker affecting Theobroma cacao plants. The aim of this study was to identify and characterize fungal species associated with leaf blight and stem canker of T. cacao in Malaysia through morphological, molecular and pathogenicity analyses. Morphological and molecular phylogenetic analyses using multiple DNA regions (rDNA internal transcribed spacer [ITS], TEF1 and TUB2) were performed and identified 40 fungal isolates found in this study as Diaporthe tulliensis (17 isolates), Fusarium solani (seven isolates), Fusarium proliferatum (six isolates) and Neopestalotiopsis clavispora (10 isolates). Pathogenicity tests with mycelial plugs and wound treatments showed that D. tulliensis and N. clavispora were responsible for causing leaf blight whereas D. tulliensis, F. solani and F. proliferatum caused stem canker of T. cacao. The present study provides insights into disease aetiology and symptomatology that may be useful in planning effective disease management for the host plant.

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“…In (Akrofi et al, 2015;Asare et al, 2021;Huda-Shakirah et al, 2022;Huda-Shakirah & Mohd, 2023;Puig et al, 2021;Serrato-Diaz et al, 2020Suryanto et al, 2014;Villanueva et al, 2023).…”

Section: Pathogenicity Testunclassified

Morphology, phylogeny and pathogenicity of fungal species associated with leaf blight and stem canker of Theobroma cacao in Malaysia

Huda‐Shakirah,

Zakaria,

Mohd

2024

Plant Pathology

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Technical efficiency of cocoa farms at varying elevation levels in Davao City, Philippines: implications to sustainable upland farming systems

Durano,

Sarmiento,

Digal

et al. 2024

J. Mt. Sci.

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First Report of the Peach Leaf Spot Caused by Nigrospora sphaerica in China

Li,

Wang,

Ishfaq

et al. 2024

Horticulturae

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Peach (Prunus persica L.) is a globally significant fruit valued for its high edible and ornamental qualities. Peach leaf spot disease has become increasingly prevalent in recent years, negatively affecting fruit quality and esthetic appeal. During the summer of 2024, symptoms of leaf spots were observed on peach trees in an orchard in Bazhong City, Sichuan Province, China. Leaf samples displaying typical spot symptoms were collected from peach orchards, and the pathogenic agents were isolated. Based on their morphological characteristics and multi-locus phylogenetic analysis, the isolated and purified fungus SCBZPP6 was identified as Nigrospora sphaerica. Furthermore, the pathogenicity of the isolated fungus was verified via Koch’s postulates. To our knowledge, this is the first report of N. sphaerica causing leaf spot on peach in China.

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Nigrospora sphaerica causing Leaf Blight Disease of Cacao in the Philippines

Cited by 4 publications

References 13 publications

Morphology, phylogeny and pathogenicity of fungal species associated with leaf blight and stem canker of Theobroma cacao in Malaysia

Morphology, phylogeny and pathogenicity of fungal species associated with leaf blight and stem canker of Theobroma cacao in Malaysia

Technical efficiency of cocoa farms at varying elevation levels in Davao City, Philippines: implications to sustainable upland farming systems

First Report of the Peach Leaf Spot Caused by Nigrospora sphaerica in China

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