TY - JOUR
T1 - Root-associated fungal communities are influenced more by soils than by plant-host root traits in a Chinese tropical forest
AU - Hogan, J. Aaron
AU - Jusino, Michelle A.
AU - Smith, Matthew E.
AU - Corrales, Adriana
AU - Song, Xiaoyang
AU - Hu, Yue hua
AU - Yang, Jie
AU - Cao, Min
AU - Valverde-Barrantes, Oscar J.
AU - Baraloto, Christopher
N1 - Funding Information:
This research was funded by a 2018 Garden Club of America Award in Tropical Botany and a research fellowship from the FIU Tropics program at the Institute of Environment, Florida International University. JAH received financial support from the FIU University Graduate School Dissertation Year Fellowship. The Xishuangbanna Tropical Botanical Garden at the Chinese Academy of Sciences provided additional support (NSFC grant 32061123003). We acknowledge the field and laboratory assistance of Iwan Guan, Run Shen, Yuan Zi, Xiao (Lilly) Taiyang, Dong-Hai Yang, and Wenfu Zhang. Finally, we are grateful to the Smith Laboratory at the University of Florida, Department of Plant Pathology, for providing laboratory resources and training to JAH. We thank several anonymous reviewers for their insightful comments and suggestions.
Funding Information:
This research was funded by a 2018 Garden Club of America Award in Tropical Botany and a research fellowship from the FIU Tropics program at the Institute of Environment, Florida International University. JAH received financial support from the FIU University Graduate School Dissertation Year Fellowship. The Xishuangbanna Tropical Botanical Garden at the Chinese Academy of Sciences provided additional support (NSFC grant 32061123003). We acknowledge the field and laboratory assistance of Iwan Guan, Run Shen, Yuan Zi, Xiao (Lilly) Taiyang, Dong‐Hai Yang, and Wenfu Zhang. Finally, we are grateful to the Smith Laboratory at the University of Florida, Department of Plant Pathology, for providing laboratory resources and training to JAH. We thank several anonymous reviewers for their insightful comments and suggestions.
Publisher Copyright:
© 2023 The Authors New Phytologist © 2023 New Phytologist Foundation.
PY - 2023/6
Y1 - 2023/6
N2 - Forest fungal communities are shaped by the interactions between host tree root systems and the associated soil conditions. We investigated how the soil environment, root morphological traits, and root chemistry influence root-inhabiting fungal communities in three tropical forest sites of varying successional status in Xishuangbanna, China. For 150 trees of 66 species, we measured root morphology and tissue chemistry. Tree species identity was confirmed by sequencing rbcL, and root-associated fungal (RAF) communities were determined using high-throughput ITS2 sequencing. Using distance-based redundancy analysis and hierarchical variation partitioning, we quantified the relative importance of two soil variables (site average total phosphorus and available phosphorus), four root traits (dry matter content, tissue density, specific tip abundance, and forks), and three root tissue elemental concentrations (nitrogen, calcium, and manganese) on RAF community dissimilarity. The root and soil environment collectively explained 23% of RAF compositional variation. Soil phosphorus explained 76% of that variation. Twenty fungal taxa differentiated RAF communities among the three sites. Soil phosphorus most strongly affects RAF assemblages in this tropical forest. Variation in root calcium and manganese concentrations and root morphology among tree hosts, principally an architectural trade-off between dense, highly branched vs less-dense, herringbone-type root systems, are important secondary determinants.
AB - Forest fungal communities are shaped by the interactions between host tree root systems and the associated soil conditions. We investigated how the soil environment, root morphological traits, and root chemistry influence root-inhabiting fungal communities in three tropical forest sites of varying successional status in Xishuangbanna, China. For 150 trees of 66 species, we measured root morphology and tissue chemistry. Tree species identity was confirmed by sequencing rbcL, and root-associated fungal (RAF) communities were determined using high-throughput ITS2 sequencing. Using distance-based redundancy analysis and hierarchical variation partitioning, we quantified the relative importance of two soil variables (site average total phosphorus and available phosphorus), four root traits (dry matter content, tissue density, specific tip abundance, and forks), and three root tissue elemental concentrations (nitrogen, calcium, and manganese) on RAF community dissimilarity. The root and soil environment collectively explained 23% of RAF compositional variation. Soil phosphorus explained 76% of that variation. Twenty fungal taxa differentiated RAF communities among the three sites. Soil phosphorus most strongly affects RAF assemblages in this tropical forest. Variation in root calcium and manganese concentrations and root morphology among tree hosts, principally an architectural trade-off between dense, highly branched vs less-dense, herringbone-type root systems, are important secondary determinants.
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U2 - 10.1111/nph.18821
DO - 10.1111/nph.18821
M3 - Research Article
C2 - 36808625
AN - SCOPUS:85150634197
SN - 0028-646X
VL - 238
SP - 1849
EP - 1864
JO - New Phytologist
JF - New Phytologist
IS - 5
ER -