Ophiostomatales (Ascomycota) associated with Tomicus species in southwestern China with an emphasis on Ophiostoma canumShow others and affiliations
2020 (English)In: Journal of Forestry Research, ISSN 1007-662X, E-ISSN 1993-0607, Vol. 31, no 6, p. 2549-2562Article in journal (Refereed) Published
Abstract [en]
Ophiostomatalean fungi may facilitate bark beetle colonization and reproduction. In the present study of the fungal community associated with bark beetle spe-cies belonging to Tomicus in Yunnan, China, six ophios-tomatalean fungi (Ophiostoma canum, O. ips, O. tingens, Leptographium yunnanense, Leptographium sp. 1 and Lep-tographium sp. 2) were isolated from the beetles or their galleries; O. canum was the most common fungal species. The distribution of O. canum was associated with stands heavily damaged by Tomicus species and a higher percentage of valid galleries of Tomicus yunnanensis and T. minor in Yunnan pine (Pinus yunnanensis). After inoculation of Yun-nan pine with the fungus, a phloem reaction zone formed and monoterpenes accumulated in the phloem. These results suggested that O. canum was pathogenic to Yunnan pine and that the wide distribution of the fungus might be beneficial to reproduction of pine shoot beetles in Yunnan pine. How-ever, because the reaction zone and monoterpene accumu-lation were mild, fungal damage of Yunnan pine might be limited. A more integrated study considering all the fungal species should be done to better understand the interactions among bark beetles, blue-stain fungi, and the tree hosts in the region.
Place, publisher, year, edition, pages
Springer, 2020. Vol. 31, no 6, p. 2549-2562
Keywords [en]
Ophiostomatalean fungi, Fungal isolation and identification, Ophiostoma canum, Pinus yunnanensis, Pathogenicity tes
National Category
Microbiology
Research subject
Biology
Identifiers
URN: urn:nbn:se:oru:diva-78304DOI: 10.1007/s11676-019-01029-1ISI: 000579169400046Scopus ID: 2-s2.0-85073998204OAI: oai:DiVA.org:oru-78304DiVA, id: diva2:1374438
Funder
Swedish Research Council Formas
Note
Funding Agencies:
Natural Science Foundation of China 31360183
Applied Basic Research Foundation of Yunnan Province 2013FA055
National Key R&D Program of China 2017YFC0505206
Örebro University
2019-12-012019-12-012020-11-05Bibliographically approved