New Reports of Botryosphaeriaceae Species Causing Postharvest Fruit Rot of Garcinia humilis in Brazil

IF 1.1 4区农林科学 Q3 PLANT SCIENCES

Journal of Phytopathology Pub Date : 2025-09-17 DOI:10.1111/jph.70171

Jordana Alves da Silva Melo, Ana Elisa de Almeida Souza, Glícia Silva de Moraes, André Angelo Medeiros Gomes, Alexandre Reis Machado

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Abstract

Achachairu (Garcinia humilis) is a fruit crop with its centre of origin in the Amazon rainforest region, which has gained prominence in commercialization in several countries in America. In addition to a sweet flavour, it is rich in several vitamins and fibres, making it of interest in the industrial sector. Fungal isolates of the Botryosphaeriaceae were obtained from fruits of G. humilis with symptoms of rot and were identified by concatenated phylogenetic analyses of ITS, TEF1-α, Tub-2 and RPB2 loci. We identified nine isolates as Lasiodiplodia theobromae, nine isolates as Lasiodiplodia pseudotheobromae, and one isolate as Neofusicoccum batangarum. Three representative isolates of these species were selected for pathogenicity tests in fruits and stems of seedlings. Typical rot symptoms appeared on the inoculated fruits and stems, confirming pathogenicity. To our knowledge, this is the first report of L. theobromae, L. pseudotheobromae, and N. batangarum as the causal agents of fruit rot of G. humilis worldwide.

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引起巴西黄藤黄果采后腐病的Botryosphaeriaceae新报道

Achachairu （Garcinia humilis）是一种水果作物，其原产地中心位于亚马逊雨林地区，在美洲几个国家的商业化中获得了突出地位。除了香甜的味道，它还富含多种维生素和纤维，这使得它在工业领域很受欢迎。采用ITS、TEF1-α、Tub-2和RPB2基因座的串联系统发育分析方法，从具有腐病症状的黄芽草果实中分离得到了一株Botryosphaeriaceae真菌。经鉴定，9株分离物为可可枯病（Lasiodiplodia theobromae）， 9株分离物为假可可枯病（Lasiodiplodia pseudotheobromae）， 1株分离物为batangarum Neofusicoccum。选取3株具有代表性的分离株进行果实和幼苗茎的致病性试验。接种后果实和茎部出现典型腐病症状，证实了致病性。据我们所知，这是在世界范围内第一次报道了L. theobromae， L. pseudotheobromae和N. batangarum作为土霉果腐病的致病因子。

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来源期刊

Journal of Phytopathology 生物-植物科学

CiteScore

2.90

自引率

0.00%

发文量

审稿时长

4-8 weeks

期刊介绍： Journal of Phytopathology publishes original and review articles on all scientific aspects of applied phytopathology in agricultural and horticultural crops. Preference is given to contributions improving our understanding of the biotic and abiotic determinants of plant diseases, including epidemics and damage potential, as a basis for innovative disease management, modelling and forecasting. This includes practical aspects and the development of methods for disease diagnosis as well as infection bioassays. Studies at the population, organism, physiological, biochemical and molecular genetic level are welcome. The journal scope comprises the pathology and epidemiology of plant diseases caused by microbial pathogens, viruses and nematodes. Accepted papers should advance our conceptual knowledge of plant diseases, rather than presenting descriptive or screening data unrelated to phytopathological mechanisms or functions. Results from unrepeated experimental conditions or data with no or inappropriate statistical processing will not be considered. Authors are encouraged to look at past issues to ensure adherence to the standards of the journal.