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Plant carbon investment in fine roots and arbuscular mycorrhizal fungi: A cross-biome study on nutrient acquisition strategies

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dc.contributor.author Stock S.C.
dc.contributor.author Koester M.
dc.contributor.author Boy J.
dc.contributor.author Godoy R.
dc.contributor.author Nájera F.
dc.contributor.author Matus F.
dc.contributor.author Merino C.
dc.contributor.author Abdallah K.
dc.contributor.author Leuschner C.
dc.contributor.author Spielvogel S.
dc.contributor.author Gorbushina A.A.
dc.contributor.author Kuzyakov Y.
dc.contributor.author Dippold M.A.
dc.date.accessioned 2022-02-09T20:32:30Z
dc.date.available 2022-02-09T20:32:30Z
dc.date.issued 2021
dc.identifier.issn 0048-9697
dc.identifier.uri https://dspace.kpfu.ru/xmlui/handle/net/168871
dc.description.abstract Comparing the belowground allocation of assimilated carbon (C) to roots and mycorrhizal fungi across biomes can reveal specific plant nutrient acquisition strategies in ecosystems and allows to predict consequences of environmental changes. Three natural ecosystems (arid shrubland, coastal matorral, humid-temperate forest) distinct in annual precipitation and vegetation cover and compositions were selected to conduct a 13CO2 pulse labeling of natural woody vegetation to chase the allocation of assimilated C to arbuscular mycorrhizal (AM) fungi and fine roots. Further, nitrogen (N) and phosphorus (P) availability, root traits, root colonization, and the extraradical AM fungal mycelium (PLFA and NLFA 16:1ω5c) were analyzed to evaluate the efficiency of nutrient acquisition strategies. AM fungal colonization decreased with increasing aridity by up to 55% intraradical and by up to 90% extraradical. High root tissue densities – indicating longevity of roots – and low specific root lengths – indicating a low nutrient uptake capacity – pointed to a slow and resource conservative acquisition strategy of plants in the arid shrubland. Plants in the matorral, on the contrary, had lower root tissue densities but higher specific root lengths and higher root N contents, pointing to a fast nutrient acquisition strategy. The expression of abundant acquisitive fine roots of plants in the matorral, however, comes at the cost of larger C investment, shown by high 13C incorporation into root tissue. High root tissue densities and greater root diameter indicated that plants in the humid-temperate forest followed a resource-conservative strategy and outsource their nutrient acquisition to AM fungi. This outsourcing provides an efficient pathway to compensate a low uptake capacity of thick and dense roots. These ecosystem-specific acquisition strategies and distinct mutualism with AM fungi across the biomes will likely affect the sensitivity of plants to abiotic and biotic stressors and, thus, ecosystem responses to future climatic and environmental changes.
dc.relation.ispartofseries Science of the Total Environment
dc.subject 13 CO pulse labeling 2
dc.subject Arbuscular mycorrhiza
dc.subject Natural ecosystems
dc.subject Plant economic spectrum
dc.subject Root economics space
dc.subject Temperate rain forest
dc.title Plant carbon investment in fine roots and arbuscular mycorrhizal fungi: A cross-biome study on nutrient acquisition strategies
dc.type Article
dc.relation.ispartofseries-volume 781
dc.collection Публикации сотрудников КФУ
dc.source.id SCOPUS00489697-2021-781-SID85103694252


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  • Публикации сотрудников КФУ Scopus [24551]
    Коллекция содержит публикации сотрудников Казанского федерального (до 2010 года Казанского государственного) университета, проиндексированные в БД Scopus, начиная с 1970г.

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