The community of root fungi is associated with the growth rate of Norway spruce (Picea abies)

IF 4.3 2区 生物学 Q2 MICROBIOLOGY Environmental microbiology Pub Date : 2024-06-05 DOI:10.1111/1462-2920.16662
Leena Hamberg, Jarno Vanhatalo, Sannakajsa Velmala, Andy F. S. Taylor, John MacKay, Sébastien Caron, Fred O. Asiegbu, Risto Sievänen, Pasi Raumonen, Tuija Hytönen, Taina Pennanen
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Abstract

Our study delved into the relationship between root-associated fungi, gene expression and plant morphology in Norway spruce cuttings derived from both slow-and fast-growing trees. We found no clear link between the gene expression patterns of adventitious roots and the growth phenotype, suggesting no fundamental differences in the receptiveness to fungal symbionts between the phenotypes. Interestingly, saplings from slow-growing parental trees exhibited a higher richness of ectomycorrhizal species and larger roots. Some ectomycorrhizal species, typically found on mature spruces, were more prevalent on saplings from slow-growing spruces. The ericoid mycorrhizal fungus, Hyaloscypha hepaticola, showed a stronger association with saplings from fast-growing spruces. Moreover, saplings from slow-growing spruces had a greater number of Ascomycete taxa and free-living saprotrophic fungi. Aboveground sapling stems displayed some phenotypic variation; saplings from fast-growing phenotypes had longer branches but fewer whorls in their stems compared to those from the slow-growing group. In conclusion, the observed root-associated fungi and phenotypic characteristics in young Norway spruces may play a role in their long-term growth rate. This suggests that the early interactions between spruces and fungi could potentially influence their growth trajectory.

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根部真菌群落与挪威云杉(Picea abies)的生长速度有关。
我们的研究深入探讨了挪威云杉插条中根系相关真菌、基因表达和植物形态之间的关系,这些插条既来自生长缓慢的树木,也来自生长迅速的树木。我们发现不定根的基因表达模式与生长表型之间没有明显的联系,这表明两种表型对真菌共生体的接受能力没有本质区别。有趣的是,来自生长缓慢的亲本树木的树苗表现出更丰富的外生菌根物种和更大的根系。一些通常存在于成熟云杉上的外生菌根物种在生长缓慢的云杉树苗上更为普遍。麦角菌根真菌 Hyaloscypha hepaticola 与快速生长的云杉树苗有更紧密的联系。此外,生长缓慢的云杉树苗有更多的子囊菌类群和自由生活的吸液真菌。树苗茎的地上部分显示出一些表型差异;与生长缓慢组的树苗相比,快速生长表型的树苗分枝更长,但茎上的轮纹更少。总之,在挪威云杉幼苗中观察到的根相关真菌和表型特征可能会对其长期生长速度产生影响。这表明,云杉与真菌之间的早期相互作用可能会影响它们的生长轨迹。
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来源期刊
Environmental microbiology
Environmental microbiology 环境科学-微生物学
CiteScore
9.90
自引率
3.90%
发文量
427
审稿时长
2.3 months
期刊介绍: Environmental Microbiology provides a high profile vehicle for publication of the most innovative, original and rigorous research in the field. The scope of the Journal encompasses the diversity of current research on microbial processes in the environment, microbial communities, interactions and evolution and includes, but is not limited to, the following: the structure, activities and communal behaviour of microbial communities microbial community genetics and evolutionary processes microbial symbioses, microbial interactions and interactions with plants, animals and abiotic factors microbes in the tree of life, microbial diversification and evolution population biology and clonal structure microbial metabolic and structural diversity microbial physiology, growth and survival microbes and surfaces, adhesion and biofouling responses to environmental signals and stress factors modelling and theory development pollution microbiology extremophiles and life in extreme and unusual little-explored habitats element cycles and biogeochemical processes, primary and secondary production microbes in a changing world, microbially-influenced global changes evolution and diversity of archaeal and bacterial viruses new technological developments in microbial ecology and evolution, in particular for the study of activities of microbial communities, non-culturable microorganisms and emerging pathogens
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