Impacts of plant root traits and microbial functional attributes on soil respiration components in the desert-oasis ecotone
Dividing soil respiration (Rs) into autotrophic respiration (Ra) and heterotrophic respiration (Rh) represents a pivotal step in deciphering how Rs responds to environmental perturbations. Nevertheless, in arid ecosystems beset by environmental stress, the partitioning of Rs and the underlying mecha...
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Frontiers Media S.A.
2025-02-01
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| Series: | Frontiers in Plant Science |
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| Online Access: | https://www.frontiersin.org/articles/10.3389/fpls.2025.1511277/full |
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| author | Jinlong Wang Jinlong Wang Jinlong Wang Guanghui Lv Guanghui Lv Guanghui Lv Jianjun Yang Jianjun Yang Jianjun Yang Xuemin He Xuemin He Xuemin He Hengfang Wang Hengfang Wang Hengfang Wang Wenjing Li Wenjing Li Wenjing Li |
| author_facet | Jinlong Wang Jinlong Wang Jinlong Wang Guanghui Lv Guanghui Lv Guanghui Lv Jianjun Yang Jianjun Yang Jianjun Yang Xuemin He Xuemin He Xuemin He Hengfang Wang Hengfang Wang Hengfang Wang Wenjing Li Wenjing Li Wenjing Li |
| author_sort | Jinlong Wang |
| collection | DOAJ |
| description | Dividing soil respiration (Rs) into autotrophic respiration (Ra) and heterotrophic respiration (Rh) represents a pivotal step in deciphering how Rs responds to environmental perturbations. Nevertheless, in arid ecosystems beset by environmental stress, the partitioning of Rs and the underlying mechanisms through which microbial and root traits govern the distinct components remain poorly understood. This study was strategically designed to investigate Rs and its components (Ra and Rh), soil properties, and root traits within the desert-oasis ecotone (encompassing the river bank, transitional zone, and desert margin) of northwest China. Employing metagenomics, we quantitatively characterized microbial taxonomic attributes (i.e., taxonomic composition) and functional attributes (specifically, functional genes implicated in microbial carbon metabolism). Field measurements during the growing season of 2019 unveiled a pronounced decline in soil respiration rates along the environmental gradient from the river bank to the desert margin. The mean soil respiration rate was recorded as 1.82 ± 0.41 μmol m-2 s-1 at the river bank, 0.49 ± 0.15 μmol m-2 s-1 in the transitional zone, and a meager 0.45 ± 0.12 μmol m-2 s-1 in the desert margin. Concomitantly, the Ra and Rh components exhibited a similar trend throughout the study period, with Rh emerging as the dominant driver of Rs. Utilizing random forest modeling, we unearthed significant associations between microbial taxonomic and functional features and Rs components. Notably, both Ra and Rh displayed robust positive correlations with the abundance of phosphatidylinositol glycan A, a key player in microbial carbon metabolism. Partial least squares path modeling further elucidated that soil properties and microbial functions exerted direct and positive influences on both Ra and Rh, whereas taxonomic features failed to register a significant impact. When considering the combined effects of biotic and abiotic factors, microbial functional attributes emerged as the linchpin in dictating Rs composition. Collectively, these findings suggest that a trait-based approach holds great promise in more effectively revealing the response mechanisms of Rs composition to environmental changes, thereby offering novel vistas for future investigations into carbon cycling in terrestrial soils. |
| format | Article |
| id | doaj-art-34ca7b8ff5d04dd3a4512f386389abfb |
| institution | Kabale University |
| issn | 1664-462X |
| language | English |
| publishDate | 2025-02-01 |
| publisher | Frontiers Media S.A. |
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| series | Frontiers in Plant Science |
| spelling | doaj-art-34ca7b8ff5d04dd3a4512f386389abfb2025-02-11T07:00:13ZengFrontiers Media S.A.Frontiers in Plant Science1664-462X2025-02-011610.3389/fpls.2025.15112771511277Impacts of plant root traits and microbial functional attributes on soil respiration components in the desert-oasis ecotoneJinlong Wang0Jinlong Wang1Jinlong Wang2Guanghui Lv3Guanghui Lv4Guanghui Lv5Jianjun Yang6Jianjun Yang7Jianjun Yang8Xuemin He9Xuemin He10Xuemin He11Hengfang Wang12Hengfang Wang13Hengfang Wang14Wenjing Li15Wenjing Li16Wenjing Li17College of Ecology and Environment, Xinjiang University, Urumqi, ChinaKey Laboratory of Oasis Ecology of Education Ministry, Xinjiang University, Urumqi, ChinaXinjiang Jinghe Observation and Research Station of Temperate Desert Ecosystem, Ministry of Education, Jinghe, ChinaCollege of Ecology and Environment, Xinjiang University, Urumqi, ChinaKey Laboratory of Oasis Ecology of Education Ministry, Xinjiang University, Urumqi, ChinaXinjiang Jinghe Observation and Research Station of Temperate Desert Ecosystem, Ministry of Education, Jinghe, ChinaCollege of Ecology and Environment, Xinjiang University, Urumqi, ChinaKey Laboratory of Oasis Ecology of Education Ministry, Xinjiang University, Urumqi, ChinaXinjiang Jinghe Observation and Research Station of Temperate Desert Ecosystem, Ministry of Education, Jinghe, ChinaCollege of Ecology and Environment, Xinjiang University, Urumqi, ChinaKey Laboratory of Oasis Ecology of Education Ministry, Xinjiang University, Urumqi, ChinaXinjiang Jinghe Observation and Research Station of Temperate Desert Ecosystem, Ministry of Education, Jinghe, ChinaCollege of Ecology and Environment, Xinjiang University, Urumqi, ChinaKey Laboratory of Oasis Ecology of Education Ministry, Xinjiang University, Urumqi, ChinaXinjiang Jinghe Observation and Research Station of Temperate Desert Ecosystem, Ministry of Education, Jinghe, ChinaCollege of Ecology and Environment, Xinjiang University, Urumqi, ChinaKey Laboratory of Oasis Ecology of Education Ministry, Xinjiang University, Urumqi, ChinaXinjiang Jinghe Observation and Research Station of Temperate Desert Ecosystem, Ministry of Education, Jinghe, ChinaDividing soil respiration (Rs) into autotrophic respiration (Ra) and heterotrophic respiration (Rh) represents a pivotal step in deciphering how Rs responds to environmental perturbations. Nevertheless, in arid ecosystems beset by environmental stress, the partitioning of Rs and the underlying mechanisms through which microbial and root traits govern the distinct components remain poorly understood. This study was strategically designed to investigate Rs and its components (Ra and Rh), soil properties, and root traits within the desert-oasis ecotone (encompassing the river bank, transitional zone, and desert margin) of northwest China. Employing metagenomics, we quantitatively characterized microbial taxonomic attributes (i.e., taxonomic composition) and functional attributes (specifically, functional genes implicated in microbial carbon metabolism). Field measurements during the growing season of 2019 unveiled a pronounced decline in soil respiration rates along the environmental gradient from the river bank to the desert margin. The mean soil respiration rate was recorded as 1.82 ± 0.41 μmol m-2 s-1 at the river bank, 0.49 ± 0.15 μmol m-2 s-1 in the transitional zone, and a meager 0.45 ± 0.12 μmol m-2 s-1 in the desert margin. Concomitantly, the Ra and Rh components exhibited a similar trend throughout the study period, with Rh emerging as the dominant driver of Rs. Utilizing random forest modeling, we unearthed significant associations between microbial taxonomic and functional features and Rs components. Notably, both Ra and Rh displayed robust positive correlations with the abundance of phosphatidylinositol glycan A, a key player in microbial carbon metabolism. Partial least squares path modeling further elucidated that soil properties and microbial functions exerted direct and positive influences on both Ra and Rh, whereas taxonomic features failed to register a significant impact. When considering the combined effects of biotic and abiotic factors, microbial functional attributes emerged as the linchpin in dictating Rs composition. Collectively, these findings suggest that a trait-based approach holds great promise in more effectively revealing the response mechanisms of Rs composition to environmental changes, thereby offering novel vistas for future investigations into carbon cycling in terrestrial soils.https://www.frontiersin.org/articles/10.3389/fpls.2025.1511277/fullautotrophic respirationheterotrophic respirationmicrobial functional attributesplant traitsdesert-oasis ecotone |
| spellingShingle | Jinlong Wang Jinlong Wang Jinlong Wang Guanghui Lv Guanghui Lv Guanghui Lv Jianjun Yang Jianjun Yang Jianjun Yang Xuemin He Xuemin He Xuemin He Hengfang Wang Hengfang Wang Hengfang Wang Wenjing Li Wenjing Li Wenjing Li Impacts of plant root traits and microbial functional attributes on soil respiration components in the desert-oasis ecotone Frontiers in Plant Science autotrophic respiration heterotrophic respiration microbial functional attributes plant traits desert-oasis ecotone |
| title | Impacts of plant root traits and microbial functional attributes on soil respiration components in the desert-oasis ecotone |
| title_full | Impacts of plant root traits and microbial functional attributes on soil respiration components in the desert-oasis ecotone |
| title_fullStr | Impacts of plant root traits and microbial functional attributes on soil respiration components in the desert-oasis ecotone |
| title_full_unstemmed | Impacts of plant root traits and microbial functional attributes on soil respiration components in the desert-oasis ecotone |
| title_short | Impacts of plant root traits and microbial functional attributes on soil respiration components in the desert-oasis ecotone |
| title_sort | impacts of plant root traits and microbial functional attributes on soil respiration components in the desert oasis ecotone |
| topic | autotrophic respiration heterotrophic respiration microbial functional attributes plant traits desert-oasis ecotone |
| url | https://www.frontiersin.org/articles/10.3389/fpls.2025.1511277/full |
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