Soil DOC release and aggregate disruption mediate rhizosphere priming effect on soil C decomposition
نویسندگان
چکیده
منابع مشابه
Rhizosphere priming effect increases the temperature sensitivity of soil organic matter decomposition
The temperature sensitivity of soil organic matter (SOM) decomposition has been a crucial topic in global change research, yet remains highly uncertain. One of the contributing factors to this uncertainty is the lack of understanding about the role of rhizosphere priming effect (RPE) in shaping the temperature sensitivity. Using a novel continuous C-labeling method, we investigated the temperat...
متن کاملRhizosphere priming effects on soil carbon and nitrogen mineralization
Living roots and their rhizodeposits affect microbial activity and soil carbon (C) and nitrogen (N) mineralization. This so-called rhizosphere priming effect (RPE) has been increasingly recognized recently. However, the magnitude of the RPE and its driving mechanisms remain elusive. Here we investigated the RPE of two plant species (soybean and sunflower) grown in two soil types (a farm or a pr...
متن کاملNodulated soybean enhances rhizosphere priming effects on soil organic matter decomposition more than non-nodulated soybean
The phenomenon that rhizosphere processes significantly control soil organic matter (SOM) decomposition, also termed rhizosphere priming effect (RPE), is now increasingly recognized as significant as the effects of soil temperature and moisture on SOM decomposition. However, the exact mechanisms responsible for RPE remain largely unknown. Particularly, some reports have suggested that the quali...
متن کاملPlant biomass influences rhizosphere priming effects on soil organic matter decomposition in two differently managed soils
We used a continuous labeling method of naturally C-depleted CO2 in a growth chamber to test for rhizosphere effects on soil organic matter (SOM) decomposition. Two C3 plant species, soybean (Glycine max) and sunflower (Helianthus annus), were grown in two previously differently managed soils, an organically farmed soil and a soil from an annual grassland. We maintained a constant atmospheric C...
متن کاملPlant inter-species effects on rhizosphere priming of soil organic matter decomposition
Living roots and their rhizodeposits can stimulate microbial activity and soil organic matter (SOM) decomposition up to several folds. This so-called rhizosphere priming effect (RPE) varies widely among plant species possibly due to species-specific differences in the quality and quantity of rhizodeposits and other root functions. However, whether the RPE is influenced by plant inter-species in...
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ژورنال
عنوان ژورنال: Soil Biology and Biochemistry
سال: 2020
ISSN: 0038-0717
DOI: 10.1016/j.soilbio.2020.107787