globalchange  > 影响、适应和脆弱性
DOI: 10.1016/j.foreco.2013.01.005
Scopus记录号: 2-s2.0-84874379790
论文题名:
Heartwood stump colonisation by Heterobasidion parviporum and H. annosum s.s. in Norway spruce (Picea abies) stands
作者: Oliva J.; Bernat M.; Stenlid J.
刊名: Forest Ecology and Management
ISSN:  0378-1127
出版年: 2013
卷: 295
起始页码: 1
结束页码: 10
语种: 英语
英文关键词: Heartwood ; Heterobasidion annosum ; Picea abies ; Reaction zone ; Resistance ; Sapwood
Scopus关键词: Heartwood ; Heterobasidion annosum ; Picea abies ; Reaction zones ; Sapwood ; Diagnosis ; Electric resistance ; Forestry ; Plants (botany) ; Wood products ; colonization ; coniferous tree ; disease resistance ; disease spread ; fungal disease ; genotype ; host-parasite interaction ; inoculation ; stand structure ; wood ; Diagnosis ; Electric Resistance ; Forestry ; Heart Wood ; Picea Abies ; Plants ; Sap Wood ; Wood Products
英文摘要: Stump-to-tree spread is a key step in the root and butt-rot disease caused by Heterobasidion annosum sensu lato. In Norway spruce stands, Heterobasidion parviporum is more likely to spread to neighbouring trees from stumps with a large diameter than from small stumps. However, H. annosum sensu stricto does not appear to share this pattern of infection. Given that the ratio of heartwood to sapwood varies depending on the size of the stump, we investigated the role of heartwood and sapwood in stump infection by H. parviporum and H. annosum s.s. To determine whether heartwood-sapwood susceptibility was different in different host species, both Norway spruce and Scots pine stumps were included in the study. Sapwood, heartwood and the border zone between sapwood and heartwood of spruce stumps and the heartwood and sapwood of pine stumps were artificially inoculated with different genotypes of H. annosum s.s. and H. parviporum. Only one zone was inoculated per stump. Infection was assessed 2 and 10. months after inoculation at 5 and 30. cm below the point of inoculation. On spruce stumps, H. parviporum and H. annosum s.s. were mostly confined to the heartwood. The area infected by H. annosum s.s. was smaller than that infected by H. parviporum. Both sapwood and border infections tended to grow towards the heartwood, whereas heartwood inoculations tended to remain in the heartwood, indicating that heartwood was more favourable for H. parviporum and H. annosum s.s. colonisation in spruce stumps. On pine, heartwood colonisation failed and only H. annosum s.s. was found in the sapwood. Our results suggest a possible association between the size of the stump and the spread of H. annosum s.s. to neighbouring trees mediated by the heartwood content, suggesting that screening for heartwood resistance could be a potentially interesting direction for future research. Treating stumps at final felling would be advisable owing to the large area of heartwood exposed by this operation. © 2013 Elsevier B.V.
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/66674
Appears in Collections:影响、适应和脆弱性

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作者单位: Department of Forest Mycology and Pathology, Swedish University of Agricultural Sciences, Box 7026, S-750 07 Uppsala, Sweden; IRTA, Postharvest XaRTA, Av. Rovira Roure, 191, ES-25198 Lleida, Spain

Recommended Citation:
Oliva J.,Bernat M.,Stenlid J.. Heartwood stump colonisation by Heterobasidion parviporum and H. annosum s.s. in Norway spruce (Picea abies) stands[J]. Forest Ecology and Management,2013-01-01,295
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