| Title | Effects of chemical inputs, plant genotype and phenotypic plasticity on soil carbon storage by wheat root systems |
| Publication Type | Journal Article |
| Year of Publication | 2023 |
| Authors | Rouch L., Follain S., Pimet E., Bizouard F., Henault C., Blouin M. |
| Journal | Plant and Soil |
| Volume | 486 |
| Pagination | 561-574 |
| Date Published | May |
| Type of Article | Article |
| ISBN Number | 0032-079X |
| Accession Number | WOS:000922521300001 |
| Keywords | additions, Agriculture, Carbon storage, climate, communities, dynamics, Mineralization rate, morphology, Plant Sciences, PROFILES, respiration, root morphology, Synthetic chemical inputs, temperate forest, Wheat varieties |
| Abstract | PurposeThe main goal of this study was to determine if ancient wheat varieties could store more carbon than modern ones in the presence or absence of inputs, due to a likely bigger and deeper root system and a slower mineralization rate.MethodsWe conducted a field experiment with four modern and four ancient varieties (released before 1960 and often grown without inputs), with and without chemical inputs (nitrogen, herbicide and fungicide taken as a single factor). Root morphology was assessed by image analysis, potential catabolic activities of fructose, alanine, citric acid by MicroResp (TM) and overall CO2 emissions by incubating soil and roots from each modality for 60 days.ResultsThe breeding type did not affect root traits, substrates respiration nor CO2 emissions in our environmental conditions. The application of inputs did not affect root traits but influenced the respiration of specific substrates and CO2 emissions. The most noticeable response was due to the "breeding type x inputs" interaction: inputs increased CO2 emissions from soil and root tissues of ancient varieties by 19%, whereas no effect was observed for modern varieties.ConclusionTaken together, our results did not support the hypothesis that ancient varieties could be more performant than modern ones in storing carbon in our experimental conditions. Increased CO2 emissions by ancient varieties in the presence of inputs showed that ancient and modern varieties differed in their phenotypic plasticity.
|
| Short Title | Plant SoilPlant Soil |
| Alternate Journal | Plant Soil |
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Rouch, Laly Follain, Stephane Pimet, Eric Bizouard, Florian Henault, Catherine Blouin, Manuel
Blouin, Manuel/K-6013-2019
Blouin, Manuel/0000-0002-3928-9070
French Ministry of Agriculture; Institut Agro
Laly Rouch was funded by the French Ministry of Agriculture. Experimental facilities were funded by the Institut Agro.
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Blouin, M (corresponding author), Univ Bourgogne Franche Comte, Univ Bourgogne, Inst Agro, Agroecol,INRAE, F-21000 Dijon, France.
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