Calcium Regulates Growth and Nutrient Absorption in Poplar Seedlings
As a crucial element for plants, calcium (Ca) is involved in photosynthesis and nutrient absorption, and affects the growth of plants. Poplar is an important economic forest and shelter forest species in China. However, the optimum calcium concentration for its growth is still unclear. Herein, we in...
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| Format: | Article |
| Language: | English |
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Frontiers Media S.A.
2022-05-01
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| Series: | Frontiers in Plant Science |
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| Online Access: | https://www.frontiersin.org/articles/10.3389/fpls.2022.887098/full |
| _version_ | 1828791374323908608 |
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| author | Xiaohang Weng Xiaohang Weng Hui Li Hui Li Chengshuai Ren Chengshuai Ren Yongbin Zhou Wenxu Zhu Wenxu Zhu Songzhu Zhang Songzhu Zhang Liying Liu Liying Liu |
| author_facet | Xiaohang Weng Xiaohang Weng Hui Li Hui Li Chengshuai Ren Chengshuai Ren Yongbin Zhou Wenxu Zhu Wenxu Zhu Songzhu Zhang Songzhu Zhang Liying Liu Liying Liu |
| author_sort | Xiaohang Weng |
| collection | DOAJ |
| description | As a crucial element for plants, calcium (Ca) is involved in photosynthesis and nutrient absorption, and affects the growth of plants. Poplar is an important economic forest and shelter forest species in China. However, the optimum calcium concentration for its growth is still unclear. Herein, we investigated the growth, biomass, photosynthetic pigments, photosynthetic parameters and products, chlorophyll fluorescence parameters, water use efficiency (iWUE), and antioxidant enzyme activity of “Liao Hu NO.1” poplar (P. simonii × P. euphratica) seedlings at 0, 2.5, 5, 10, and 20 mmol·L−1 concentrations of Ca2+, and further studied the absorption, distribution, and utilization of nutrient elements (C, N, P, K, and Ca) in plants. We found that with increasing calcium gradient, plant height and diameter; root, stem, leaf, and total biomasses; net photosynthetic rate (Pn); stomatal conductance (Gs); intercellular carbon dioxide (Ci) level; transpiration rate (Tr); Fv/Fm ratio; Fv/F0 ratio; chlorophyll-a; chlorophyll-b; soluble sugar and starch content; superoxide dismutase (SOD), catalase (CAT), and peroxidase (POD) levels; and long-term water use efficiency (iWUE) of poplar seedlings first increased and then decreased. These parameters attained maximum values when the calcium concentration was 5 mmol·L−1, which was significantly different from the other treatments (P < 0.05). Moreover, a suitable Ca2+ level promoted the absorption of C, N, P, K, and Ca by various organs of poplar seedlings. The absorption of C, N, P, and K increased first and then decreased with the increased calcium concentration, but the optimum calcium concentrations for the absorption of different elements by different organs were different, and the calcium concentration in leaves, stems, and roots increased gradually. Furthermore, the increase in exogenous calcium content led to a decreasing trend in the C/N ratio in different organs of poplar seedlings. C/P and N/P ratios showed different results in different parts, and only the N/P ratio in leaves showed a significant positive correlation with Ca2+ concentration. In conclusion, the results of this study indicate that 5 mmol·L−1 concentration of Ca2+ is the optimal level, as it increased growth by enhancing photosynthesis, stress resistance, and nutrient absorption. |
| first_indexed | 2024-12-12T02:49:43Z |
| format | Article |
| id | doaj.art-5de3b083ed0c499aa6b184f53494d125 |
| institution | Directory Open Access Journal |
| issn | 1664-462X |
| language | English |
| last_indexed | 2024-12-12T02:49:43Z |
| publishDate | 2022-05-01 |
| publisher | Frontiers Media S.A. |
| record_format | Article |
| series | Frontiers in Plant Science |
| spelling | doaj.art-5de3b083ed0c499aa6b184f53494d1252022-12-22T00:40:55ZengFrontiers Media S.A.Frontiers in Plant Science1664-462X2022-05-011310.3389/fpls.2022.887098887098Calcium Regulates Growth and Nutrient Absorption in Poplar SeedlingsXiaohang Weng0Xiaohang Weng1Hui Li2Hui Li3Chengshuai Ren4Chengshuai Ren5Yongbin Zhou6Wenxu Zhu7Wenxu Zhu8Songzhu Zhang9Songzhu Zhang10Liying Liu11Liying Liu12College of Forestry, Shenyang Agricultural University, Shenyang, ChinaResearch Station of Liaohe-River Plain Forest Ecosystem, Chinese Forest Ecosystem Research Network (CFERN), Shenyang Agricultural University, Shenyang, ChinaCollege of Forestry, Shenyang Agricultural University, Shenyang, ChinaResearch Station of Liaohe-River Plain Forest Ecosystem, Chinese Forest Ecosystem Research Network (CFERN), Shenyang Agricultural University, Shenyang, ChinaCollege of Forestry, Shenyang Agricultural University, Shenyang, ChinaResearch Station of Liaohe-River Plain Forest Ecosystem, Chinese Forest Ecosystem Research Network (CFERN), Shenyang Agricultural University, Shenyang, ChinaInstitute of Modern Agricultural Research, Dalian University, Dalian, ChinaCollege of Forestry, Shenyang Agricultural University, Shenyang, ChinaResearch Station of Liaohe-River Plain Forest Ecosystem, Chinese Forest Ecosystem Research Network (CFERN), Shenyang Agricultural University, Shenyang, ChinaCollege of Forestry, Shenyang Agricultural University, Shenyang, ChinaResearch Station of Liaohe-River Plain Forest Ecosystem, Chinese Forest Ecosystem Research Network (CFERN), Shenyang Agricultural University, Shenyang, ChinaCollege of Forestry, Shenyang Agricultural University, Shenyang, ChinaResearch Station of Liaohe-River Plain Forest Ecosystem, Chinese Forest Ecosystem Research Network (CFERN), Shenyang Agricultural University, Shenyang, ChinaAs a crucial element for plants, calcium (Ca) is involved in photosynthesis and nutrient absorption, and affects the growth of plants. Poplar is an important economic forest and shelter forest species in China. However, the optimum calcium concentration for its growth is still unclear. Herein, we investigated the growth, biomass, photosynthetic pigments, photosynthetic parameters and products, chlorophyll fluorescence parameters, water use efficiency (iWUE), and antioxidant enzyme activity of “Liao Hu NO.1” poplar (P. simonii × P. euphratica) seedlings at 0, 2.5, 5, 10, and 20 mmol·L−1 concentrations of Ca2+, and further studied the absorption, distribution, and utilization of nutrient elements (C, N, P, K, and Ca) in plants. We found that with increasing calcium gradient, plant height and diameter; root, stem, leaf, and total biomasses; net photosynthetic rate (Pn); stomatal conductance (Gs); intercellular carbon dioxide (Ci) level; transpiration rate (Tr); Fv/Fm ratio; Fv/F0 ratio; chlorophyll-a; chlorophyll-b; soluble sugar and starch content; superoxide dismutase (SOD), catalase (CAT), and peroxidase (POD) levels; and long-term water use efficiency (iWUE) of poplar seedlings first increased and then decreased. These parameters attained maximum values when the calcium concentration was 5 mmol·L−1, which was significantly different from the other treatments (P < 0.05). Moreover, a suitable Ca2+ level promoted the absorption of C, N, P, K, and Ca by various organs of poplar seedlings. The absorption of C, N, P, and K increased first and then decreased with the increased calcium concentration, but the optimum calcium concentrations for the absorption of different elements by different organs were different, and the calcium concentration in leaves, stems, and roots increased gradually. Furthermore, the increase in exogenous calcium content led to a decreasing trend in the C/N ratio in different organs of poplar seedlings. C/P and N/P ratios showed different results in different parts, and only the N/P ratio in leaves showed a significant positive correlation with Ca2+ concentration. In conclusion, the results of this study indicate that 5 mmol·L−1 concentration of Ca2+ is the optimal level, as it increased growth by enhancing photosynthesis, stress resistance, and nutrient absorption.https://www.frontiersin.org/articles/10.3389/fpls.2022.887098/fullpoplar growthcalciumphotosynthetic characteristicsstress resistancenutrients absorption |
| spellingShingle | Xiaohang Weng Xiaohang Weng Hui Li Hui Li Chengshuai Ren Chengshuai Ren Yongbin Zhou Wenxu Zhu Wenxu Zhu Songzhu Zhang Songzhu Zhang Liying Liu Liying Liu Calcium Regulates Growth and Nutrient Absorption in Poplar Seedlings Frontiers in Plant Science poplar growth calcium photosynthetic characteristics stress resistance nutrients absorption |
| title | Calcium Regulates Growth and Nutrient Absorption in Poplar Seedlings |
| title_full | Calcium Regulates Growth and Nutrient Absorption in Poplar Seedlings |
| title_fullStr | Calcium Regulates Growth and Nutrient Absorption in Poplar Seedlings |
| title_full_unstemmed | Calcium Regulates Growth and Nutrient Absorption in Poplar Seedlings |
| title_short | Calcium Regulates Growth and Nutrient Absorption in Poplar Seedlings |
| title_sort | calcium regulates growth and nutrient absorption in poplar seedlings |
| topic | poplar growth calcium photosynthetic characteristics stress resistance nutrients absorption |
| url | https://www.frontiersin.org/articles/10.3389/fpls.2022.887098/full |
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