斯里兰卡的桉树叶斑病由桉树科尼菌引起

IF 1 4区生物学 Q3 PLANT SCIENCES

Phytotaxa Pub Date : 2023-12-12 DOI:10.11646/phytotaxa.630.1.3

Rashika S. Brahmanage, N. Wijayawardene, Chandrika M. Nanayakkara, C. Muthumala, S. Wijesundara, Donqin Dai, Kahandawa G.S.U. Ariyawansa

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引用次数: 0

摘要

桉树病菌作为植物病原体广泛分布于桉树物种中。在此，我们报告了由 Coniella eucalyptorum 在斯里兰卡的 camaldulensis 桉树上引起的叶斑病。病原体是从斯里兰卡 Polonnaruwa 地区有症状的 camaldulensis 植物叶片样本中分离出来的。根据形态特征以及内部转录间隔区（ITS）、部分翻译延伸因子 1-α 基因（tef1-α）和核糖体 RNA 大亚基（LSU）组合序列的多基因系统发育分析，确定分离出的真菌为 C. eucalyptorum。为确认其对宿主的致病性，对其进行了致病性试验，其产生的症状与在田间观察到的症状相似。这是斯里兰卡首次报告与桉树种植园相关的 C. eucalyptorum。这一发现对于扩展斯里兰卡桉树物种和其他重要经济作物中植物病原体多样性的知识非常重要。

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Eucalyptus leaf spot disease caused by Coniella eucalyptorum in Sri Lanka

Coniella has a wide distribution as a plant pathogen in Eucalyptus species. Here we report a leaf spot disease caused by Coniella eucalyptorum on Eucalyptus camaldulensis in Sri Lanka. The pathogen was isolated from symptomatic leaf samples of E. camaldulensis plants from Polonnaruwa District in Sri Lanka. The isolated fungus was identified as C. eucalyptorum based on morphological characteristics and multi-gene phylogenetic analysis of combined sequences of the internal transcribed spacer region (ITS), the partial translation elongation factor 1-α gene (tef1-α), and large subunit of nuclear ribosomal RNA (LSU). The pathogenicity test was performed to confirm its pathogenicity to the host, which produced symptoms similar to those observed in the field. This is the first report of C. eucalyptorum associated with Eucalyptus plantations in Sri Lanka. This finding is important to expand the knowledge of plant pathogen diversity in Eucalyptus species and other economically important crops in Sri Lanka.

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来源期刊

Phytotaxa PLANT SCIENCES-

CiteScore

1.90

自引率

27.30%

发文量

956

审稿时长

1 months

期刊介绍： Phytotaxa is a peer-reviewed, international journal for rapid publication of high quality papers on any aspect of systematic and taxonomic botany, with a preference for large taxonomic works such as monographs, floras, revisions and evolutionary studies and descriptions of new taxa. Phytotaxa covers all groups covered by the International Code of Nomenclature foralgae, fungi, and plants ICNafp (fungi, lichens, algae, diatoms, mosses, liverworts, hornworts, and vascular plants), both living and fossil. Phytotaxa was founded in 2009 as botanical sister journal to Zootaxa. It has a large editorial board, who are running this journal on a voluntary basis, and it is published by Magnolia Press (Auckland , New Zealand). It is also indexed by SCIE, JCR and Biosis. All types of taxonomic, floristic and phytogeographic papers are considered, including theoretical papers and methodology, systematics and phylogeny, monographs, revisions and reviews, catalogues, biographies and bibliographies, history of botanical explorations, identification guides, floras, analyses of characters, phylogenetic studies and phytogeography, descriptions of taxa, typification and nomenclatural papers. Monographs and other long manuscripts (of 60 printed pages or more) can be published as books, which will receive an ISBN number as well as being part of the Phytotaxa series.