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Lignin and cellulose dynamics with straw incorporation in two contrasting cropping soils

Incorporation of crop residues is essential to enhance soil organic matter in arable ecosystems. Here, we monitored the dynamics of cellulose and lignin, the most abundant constituents of plant residues, and their relationships with enzyme activities, microbial gene abundances and soil properties af...

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Autores principales: Chen, Xiangbi, Hu, Yajun, Feng, Shuzhen, Rui, Yichao, Zhang, Zhenhua, He, Hongbo, He, Xinhua, Ge, Tida, Wu, Jinshui, Su, Yirong
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Nature Publishing Group UK 2018
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5786085/
https://www.ncbi.nlm.nih.gov/pubmed/29374246
http://dx.doi.org/10.1038/s41598-018-20134-5
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author Chen, Xiangbi
Hu, Yajun
Feng, Shuzhen
Rui, Yichao
Zhang, Zhenhua
He, Hongbo
He, Xinhua
Ge, Tida
Wu, Jinshui
Su, Yirong
author_facet Chen, Xiangbi
Hu, Yajun
Feng, Shuzhen
Rui, Yichao
Zhang, Zhenhua
He, Hongbo
He, Xinhua
Ge, Tida
Wu, Jinshui
Su, Yirong
author_sort Chen, Xiangbi
collection PubMed
description Incorporation of crop residues is essential to enhance soil organic matter in arable ecosystems. Here, we monitored the dynamics of cellulose and lignin, the most abundant constituents of plant residues, and their relationships with enzyme activities, microbial gene abundances and soil properties after 13-year long-term and one-year short-term crop straw incorporation into upland and upland-paddy soils in a field-based experiment. Lignin, rather than cellulose, accumulated in both soils following straw incorporation. Cellulose was almost completely converted into non-cellulose forms within 6 and 3 months after straw incorporation into upland and upland-paddy rotation soils, respectively. Whereas, lignin accumulated at the rate of 129 and 137 mg kg(−1) yr(−1) within 13 years’ straw incorporation in upland and upland-paddy rotation, respectively. The predominance of recalcitrant vanillyl monomers in upland-paddy rotation indicated a high stability of lignin. Structural equation models revealed that the key factor driving cellulose and lignin dynamics was available nitrogen, followed by enzymes activities (cellobiohydrolases and laccases) and functional genes abundances (cbhI and laccase-like) as mediated by soil pH. Our findings highlighted that upland might have higher carbon sequestration rate, whereas upland-paddy rotation system was more beneficial for accumulation of recalcitrant organic fractions under crop residue incorporation.
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spelling pubmed-57860852018-02-07 Lignin and cellulose dynamics with straw incorporation in two contrasting cropping soils Chen, Xiangbi Hu, Yajun Feng, Shuzhen Rui, Yichao Zhang, Zhenhua He, Hongbo He, Xinhua Ge, Tida Wu, Jinshui Su, Yirong Sci Rep Article Incorporation of crop residues is essential to enhance soil organic matter in arable ecosystems. Here, we monitored the dynamics of cellulose and lignin, the most abundant constituents of plant residues, and their relationships with enzyme activities, microbial gene abundances and soil properties after 13-year long-term and one-year short-term crop straw incorporation into upland and upland-paddy soils in a field-based experiment. Lignin, rather than cellulose, accumulated in both soils following straw incorporation. Cellulose was almost completely converted into non-cellulose forms within 6 and 3 months after straw incorporation into upland and upland-paddy rotation soils, respectively. Whereas, lignin accumulated at the rate of 129 and 137 mg kg(−1) yr(−1) within 13 years’ straw incorporation in upland and upland-paddy rotation, respectively. The predominance of recalcitrant vanillyl monomers in upland-paddy rotation indicated a high stability of lignin. Structural equation models revealed that the key factor driving cellulose and lignin dynamics was available nitrogen, followed by enzymes activities (cellobiohydrolases and laccases) and functional genes abundances (cbhI and laccase-like) as mediated by soil pH. Our findings highlighted that upland might have higher carbon sequestration rate, whereas upland-paddy rotation system was more beneficial for accumulation of recalcitrant organic fractions under crop residue incorporation. Nature Publishing Group UK 2018-01-26 /pmc/articles/PMC5786085/ /pubmed/29374246 http://dx.doi.org/10.1038/s41598-018-20134-5 Text en © The Author(s) 2018 Open Access This article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made. The images or other third party material in this article are included in the article’s Creative Commons license, unless indicated otherwise in a credit line to the material. If material is not included in the article’s Creative Commons license and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder. To view a copy of this license, visit http://creativecommons.org/licenses/by/4.0/.
spellingShingle Article
Chen, Xiangbi
Hu, Yajun
Feng, Shuzhen
Rui, Yichao
Zhang, Zhenhua
He, Hongbo
He, Xinhua
Ge, Tida
Wu, Jinshui
Su, Yirong
Lignin and cellulose dynamics with straw incorporation in two contrasting cropping soils
title Lignin and cellulose dynamics with straw incorporation in two contrasting cropping soils
title_full Lignin and cellulose dynamics with straw incorporation in two contrasting cropping soils
title_fullStr Lignin and cellulose dynamics with straw incorporation in two contrasting cropping soils
title_full_unstemmed Lignin and cellulose dynamics with straw incorporation in two contrasting cropping soils
title_short Lignin and cellulose dynamics with straw incorporation in two contrasting cropping soils
title_sort lignin and cellulose dynamics with straw incorporation in two contrasting cropping soils
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5786085/
https://www.ncbi.nlm.nih.gov/pubmed/29374246
http://dx.doi.org/10.1038/s41598-018-20134-5
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