Abstract:
:Understanding the differences in fine-root traits among different species is essential to gain a detailed understanding of resource conservation and acquisition strategies of plants. We aimed to explore whether certain root traits are consistent among subsets of species and characterize species together into meaningful community groups. We selected 11 woody species from different microbial symbiotic groups (ectomycorrhiza, arbuscular mycorrhiza, and rhizobia) and phylogenetic groups (broad-leaved angiosperms and coniferous gymnosperms) from the cool temperate forests of Nagano, Japan. We measured root architectural (branching intensity), morphological (root tissue density and specific root length), chemical (N and K concentrations), and anatomical (total stele and total cortex) traits. Significant differences were observed in all root traits, although many species did not differ from one another. Branching intensity was found to be the greatest variation in the measured root traits across the 11 woody species. The results of a principal component analysis of root traits showed a distinct separation between angiosperms and gymnosperms. We identified clusters of species based on their multidimensional root traits that were consistent with the different phylogenetic microbial association groups. Gymnosperm roots may be more resource conservative, while angiosperm roots may be more acquisitive for water and nutrients. We consider that the advances in root traits combination will make a breakthrough in our ability to differentiate the community groups rather than individual root trait.
journal_name
Oecologiajournal_title
Oecologiaauthors
Yahara H,Tanikawa N,Okamoto M,Makita Ndoi
10.1007/s00442-019-04546-2subject
Has Abstractpub_date
2019-12-01 00:00:00pages
983-993issue
4eissn
0029-8549issn
1432-1939pii
10.1007/s00442-019-04546-2journal_volume
191pub_type
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