Impacts of plant root traits and microbial functional attributes on soil respiration components in the desert-oasis ecotone DOI Creative Commons
Jinlong Wang, Guanghui Lv,

Jianjun Yang

et al.

Frontiers in Plant Science, Journal Year: 2025, Volume and Issue: 16

Published: Feb. 11, 2025

Dividing soil respiration (Rs) into autotrophic (Ra) and heterotrophic (Rh) represents a pivotal step in deciphering how Rs responds to environmental perturbations. Nevertheless, arid ecosystems beset by stress, the partitioning of underlying mechanisms through which microbial root traits govern distinct components remain poorly understood. This study was strategically designed investigate its (Ra Rh), properties, within desert-oasis ecotone (encompassing river bank, transitional zone, desert margin) northwest China. Employing metagenomics, we quantitatively characterized taxonomic attributes (i.e., composition) functional (specifically, genes implicated carbon metabolism). Field measurements during growing season 2019 unveiled pronounced decline rates along gradient from bank margin. The mean rate recorded as 1.82 ± 0.41 μmol m -2 s -1 at 0.49 0.15 meager 0.45 0.12 Concomitantly, Ra Rh exhibited similar trend throughout period, with emerging dominant driver Rs. Utilizing random forest modeling, unearthed significant associations between features components. Notably, both displayed robust positive correlations abundance phosphatidylinositol glycan A, key player metabolism. Partial least squares path modeling further elucidated that properties functions exerted direct influences on Rh, whereas failed register impact. When considering combined effects biotic abiotic factors, emerged linchpin dictating composition. Collectively, these findings suggest trait-based approach holds great promise more effectively revealing response composition changes, thereby offering novel vistas for future investigations cycling terrestrial soils.

Language: Английский

Impacts of plant root traits and microbial functional attributes on soil respiration components in the desert-oasis ecotone DOI Creative Commons
Jinlong Wang, Guanghui Lv,

Jianjun Yang

et al.

Frontiers in Plant Science, Journal Year: 2025, Volume and Issue: 16

Published: Feb. 11, 2025

Dividing soil respiration (Rs) into autotrophic (Ra) and heterotrophic (Rh) represents a pivotal step in deciphering how Rs responds to environmental perturbations. Nevertheless, arid ecosystems beset by stress, the partitioning of underlying mechanisms through which microbial root traits govern distinct components remain poorly understood. This study was strategically designed investigate its (Ra Rh), properties, within desert-oasis ecotone (encompassing river bank, transitional zone, desert margin) northwest China. Employing metagenomics, we quantitatively characterized taxonomic attributes (i.e., composition) functional (specifically, genes implicated carbon metabolism). Field measurements during growing season 2019 unveiled pronounced decline rates along gradient from bank margin. The mean rate recorded as 1.82 ± 0.41 μmol m -2 s -1 at 0.49 0.15 meager 0.45 0.12 Concomitantly, Ra Rh exhibited similar trend throughout period, with emerging dominant driver Rs. Utilizing random forest modeling, unearthed significant associations between features components. Notably, both displayed robust positive correlations abundance phosphatidylinositol glycan A, key player metabolism. Partial least squares path modeling further elucidated that properties functions exerted direct influences on Rh, whereas failed register impact. When considering combined effects biotic abiotic factors, emerged linchpin dictating composition. Collectively, these findings suggest trait-based approach holds great promise more effectively revealing response composition changes, thereby offering novel vistas for future investigations cycling terrestrial soils.

Language: Английский

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