Variations in rhizosphere soil total phosphorus and bioavailable phosphorus with respect to the stand age in Pinus massoniana Lamb.
Phosphorus (P) is a nutrient limiting plant growth in subtropical regions. However, our understanding of how soil P responds to an increase in stand age is rather poor. In particular, little is known about how bioavailable P pools (soluble P, exchangeable P, hydrolyzable P, and ligand P) shift with...
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Frontiers Media S.A.
2022-08-01
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| Series: | Frontiers in Plant Science |
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| Online Access: | https://www.frontiersin.org/articles/10.3389/fpls.2022.939683/full |
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| author | Yaowen Xu Yaowen Xu Xiaogai Ge Xiaogai Ge Benzhi Zhou Benzhi Zhou Lei Lei Wenfa Xiao |
| author_facet | Yaowen Xu Yaowen Xu Xiaogai Ge Xiaogai Ge Benzhi Zhou Benzhi Zhou Lei Lei Wenfa Xiao |
| author_sort | Yaowen Xu |
| collection | DOAJ |
| description | Phosphorus (P) is a nutrient limiting plant growth in subtropical regions. However, our understanding of how soil P responds to an increase in stand age is rather poor. In particular, little is known about how bioavailable P pools (soluble P, exchangeable P, hydrolyzable P, and ligand P) shift with a change in stand age. Moreover, the P cycle in rhizosphere soil has the most direct and significant influence on plants. The aim of the present study was to determine the concentrations of total P in various rhizosphere soil bioavailable P fractions in 5-, 9-, 19-, 29-, and 35-year-old stands of Pinus massoniana Lamb. According to the results, total P (TP) concentration and N:P ratio in rhizosphere soil first decreased, and then increased with an increase in stand age. Soluble P concentration decreased first, and then increased with an increase in stand age; exchangeable P and ligand P decreased first, and then tended to be stable with an increase in stand age, whereas hydrolyzable P increased first, and then decreased. Structural Equation Model results suggested that ligand P and soluble P were the major factor affecting the TP. In addition, soil microorganisms and acid phosphatase-driven hydrolyzable P play a crucial role in soil bioavailable P cycling. Overall, the results of our study provide a mechanistic understanding of soil bioavailable P cycling under low available P conditions, and a basis for an effective P management strategy for the sustainable development of P. massoniana plantations. |
| first_indexed | 2024-12-10T17:37:37Z |
| format | Article |
| id | doaj.art-80526c804bda4a418bfd6ea74c267d09 |
| institution | Directory Open Access Journal |
| issn | 1664-462X |
| language | English |
| last_indexed | 2024-12-10T17:37:37Z |
| publishDate | 2022-08-01 |
| publisher | Frontiers Media S.A. |
| record_format | Article |
| series | Frontiers in Plant Science |
| spelling | doaj.art-80526c804bda4a418bfd6ea74c267d092022-12-22T01:39:29ZengFrontiers Media S.A.Frontiers in Plant Science1664-462X2022-08-011310.3389/fpls.2022.939683939683Variations in rhizosphere soil total phosphorus and bioavailable phosphorus with respect to the stand age in Pinus massoniana Lamb.Yaowen Xu0Yaowen Xu1Xiaogai Ge2Xiaogai Ge3Benzhi Zhou4Benzhi Zhou5Lei Lei6Wenfa Xiao7Research Institute of Subtropical Forestry, Chinese Academy of Forestry, Hangzhou, ChinaQianjiangyuan Forest Ecosystem Research Station, National Forestry and Grassland Administration of China, Hangzhou, ChinaResearch Institute of Subtropical Forestry, Chinese Academy of Forestry, Hangzhou, ChinaQianjiangyuan Forest Ecosystem Research Station, National Forestry and Grassland Administration of China, Hangzhou, ChinaResearch Institute of Subtropical Forestry, Chinese Academy of Forestry, Hangzhou, ChinaQianjiangyuan Forest Ecosystem Research Station, National Forestry and Grassland Administration of China, Hangzhou, ChinaState Forestry Administration, Key Laboratory of Forest Ecology and Environment, Research Institute of Forest Ecology, Environment and National Protection, Chinese Academy of Forestry, Beijing, ChinaState Forestry Administration, Key Laboratory of Forest Ecology and Environment, Research Institute of Forest Ecology, Environment and National Protection, Chinese Academy of Forestry, Beijing, ChinaPhosphorus (P) is a nutrient limiting plant growth in subtropical regions. However, our understanding of how soil P responds to an increase in stand age is rather poor. In particular, little is known about how bioavailable P pools (soluble P, exchangeable P, hydrolyzable P, and ligand P) shift with a change in stand age. Moreover, the P cycle in rhizosphere soil has the most direct and significant influence on plants. The aim of the present study was to determine the concentrations of total P in various rhizosphere soil bioavailable P fractions in 5-, 9-, 19-, 29-, and 35-year-old stands of Pinus massoniana Lamb. According to the results, total P (TP) concentration and N:P ratio in rhizosphere soil first decreased, and then increased with an increase in stand age. Soluble P concentration decreased first, and then increased with an increase in stand age; exchangeable P and ligand P decreased first, and then tended to be stable with an increase in stand age, whereas hydrolyzable P increased first, and then decreased. Structural Equation Model results suggested that ligand P and soluble P were the major factor affecting the TP. In addition, soil microorganisms and acid phosphatase-driven hydrolyzable P play a crucial role in soil bioavailable P cycling. Overall, the results of our study provide a mechanistic understanding of soil bioavailable P cycling under low available P conditions, and a basis for an effective P management strategy for the sustainable development of P. massoniana plantations.https://www.frontiersin.org/articles/10.3389/fpls.2022.939683/fullphosphorus fractionsbioavailable phosphorusphosphorus recyclingrhizosphere soilstand age |
| spellingShingle | Yaowen Xu Yaowen Xu Xiaogai Ge Xiaogai Ge Benzhi Zhou Benzhi Zhou Lei Lei Wenfa Xiao Variations in rhizosphere soil total phosphorus and bioavailable phosphorus with respect to the stand age in Pinus massoniana Lamb. Frontiers in Plant Science phosphorus fractions bioavailable phosphorus phosphorus recycling rhizosphere soil stand age |
| title | Variations in rhizosphere soil total phosphorus and bioavailable phosphorus with respect to the stand age in Pinus massoniana Lamb. |
| title_full | Variations in rhizosphere soil total phosphorus and bioavailable phosphorus with respect to the stand age in Pinus massoniana Lamb. |
| title_fullStr | Variations in rhizosphere soil total phosphorus and bioavailable phosphorus with respect to the stand age in Pinus massoniana Lamb. |
| title_full_unstemmed | Variations in rhizosphere soil total phosphorus and bioavailable phosphorus with respect to the stand age in Pinus massoniana Lamb. |
| title_short | Variations in rhizosphere soil total phosphorus and bioavailable phosphorus with respect to the stand age in Pinus massoniana Lamb. |
| title_sort | variations in rhizosphere soil total phosphorus and bioavailable phosphorus with respect to the stand age in pinus massoniana lamb |
| topic | phosphorus fractions bioavailable phosphorus phosphorus recycling rhizosphere soil stand age |
| url | https://www.frontiersin.org/articles/10.3389/fpls.2022.939683/full |
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