Mycobiota of Ips sexdentatus (Börner, 1776) (Coleoptera, Curculionidae: Scolytinae) in Belarus

Q4 Agricultural and Biological Sciences Entomological Review Pub Date : 2024-01-19 DOI:10.1134/s0013873823050056

M. O. Ramanenka, S. V. Panteleev, A. A. Sazonov, L. O. Ivashchanka

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Abstract

The fungal component of the microbiome associated with the six-toothed bark beetle Ips sexdentatus (Börner, 1776) in the territory of Belarus was studied in order to clarify the role of this xylophage as a vector of dangerous phytopathogenic fungi. More than 360 pure fungal cultures isolated from the surface and hemocoel of I. sexdentatus were analyzed by morphological and molecular genetic methods, and 35 species from 25 genera, 17 families, and 3 divisions of fungi were identified. All these species were conventionally classified into three groups based on their impact on wood: (1) fungi that cause wood discoloration (mold, blue stain, etc.), (2) fungi that cause rot in living trees and cut wood, and (3) fungi whose effect on harvested timber remains unclear. Five species of Ophiostomataceae fungi associated with blue rot were identified: Leptographium Lagerb. & Melin sp., Ophiostoma ips (Rumbold) Nannf., O. minus (Hedgc.) Syd. & P. Syd., O. canum (Münch) Syd. & P. Syd., and O. piceae (Münch) Syd. & P. Syd. The root rot agent Heterobasidion annosum (Fr.) Bref. was detected in 7.8% of the studied fungal samples. The fairly high occurrence of I. sexdentatus confirms its participation in the development of complex pine dieback foci in Belarus. A considerable level of infection with four species of entomopathogenic fungi (11.4%) was recorded in the I. sexdentatus population by molecular genetic methods.

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白俄罗斯 Ips sexdentatus (Börner, 1776) (Coleoptera, Curculionidae: Scolytinae) 的霉菌生物群

摘要研究了白俄罗斯境内与六齿树皮甲虫 Ips sexdentatus（Börner，1776 年）相关的微生物组中的真菌成分，以明确这种木蠹蛾作为危险的植物病原真菌载体的作用。通过形态学和分子遗传学方法分析了从 I. sexdentatus 的表面和血肠中分离出的 360 多种纯真菌培养物，确定了来自 25 属、17 科和 3 个真菌部门的 35 个物种。根据真菌对木材的影响，所有这些菌种被传统地分为三类：（1）导致木材变色的真菌（霉菌、蓝斑等）；（2）导致活树和伐木腐烂的真菌；（3）对伐木影响尚不明确的真菌。现已查明与蓝腐病有关的五种 Ophiostomataceae 真菌：Leptographium Lagerb. & Melin sp.、Ophiostoma ips (Rumbold) Nannf.、O. minus (Hedgc.) Syd. & P. Syd.、O. canum (Münch) Syd. & P. Syd.和 O. piceae (Münch) Syd. & P. Syd.在 7.8% 的研究真菌样本中检测到根腐病菌 Heterobasidion annosum (Fr.) Bref.。I. sexdentatus 的出现率相当高，证明它参与了白俄罗斯复杂松树枯死病灶的发展。通过分子遗传学方法，在 I. sexdentatus 群体中记录到相当高的四种昆虫病原真菌感染率（11.4%）。

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来源期刊

Entomological Review Agricultural and Biological Sciences-Insect Science

CiteScore

0.80

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0.00%

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期刊介绍： Entomological Review publishes papers dealing with all aspects of theoretical and applied entomology; and covers systematics, faunistics, zoogeography, evolution, ecology, morphology, physiology of insects, spiders and mites; as well as biological and chemical control of pests. It is one of the few entomological journals with a broad coverage.