Chin J Plant Ecol ›› 2012, Vol. 36 ›› Issue (3): 177-186.DOI: 10.3724/SP.J.1258.2012.00177
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SU Hua1,2, LI Yong-Geng2, SU Ben-Ying3, SUN Jian-Xin1,*()
Received:
2012-01-10
Accepted:
2012-02-15
Online:
2012-01-10
Published:
2012-02-28
Contact:
SUN Jian-Xin
SU Hua, LI Yong-Geng, SU Ben-Ying, SUN Jian-Xin. Effects of groundwater decline on photosynthetic characteristics and stress tolerance of Ulmus pumila in Hunshandake Sandy Land, China[J]. Chin J Plant Ecol, 2012, 36(3): 177-186.
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URL: https://www.plant-ecology.com/EN/10.3724/SP.J.1258.2012.00177
Fig. 1 Illustration of PVC tubes arrangement. Dotted line indicates water surface in tank. U1, water table is 1 m; U2, water table is 2 m; U3, water table is 3 m; U4, water table is 4 m.
处理 Treatment | LSP (μmol·m-2·s-1) | ΔLSP (%) | LCP (μmol·m-2·s-1) | ΔLCP (%) | AQY (mol·mol-1) | ΔAQY (%) | Rd (μmol·m-2·s-1) | ΔRd (%) | Pmax (μmol·m-2·s-1) | ΔPmax (%) |
---|---|---|---|---|---|---|---|---|---|---|
U1 | 1412.28 ± 12.11d | - | 9.40 ± 0.97a | - | 0.021 ± 0.000c | - | 1.15 ± 0.05d | - | 10.81 ± 0.28d | - |
U2 | 1048.94 ± 19.26c | 25.7 | 11.85 ± 1.05b | -26.1 | 0.015 ± 0.001b | 28.6 | 0.55 ± 0.13c | 52.2 | 9.95 ± 0.12c | 8.0 |
U3 | 920.46 ± 12.77b | 34.8 | 26.09 ± 1.30c | -177.6 | 0.013 ± 0.001a | 38.1 | 0.45 ± 0.11b | 60.9 | 9.37 ± 0.22b | 13.3 |
U4 | 696.84 ± 15.03a | 50.7 | 36.25 ± 1.77d | -285.6 | 0.012 ± 0.001a | 42.9 | 0.29 ± 0.06a | 74.8 | 8.98 ± 0.08a | 16.9 |
Table 1 Effects of different water table on light saturation point (LSP), light compensation point (LCP), apparent quantum yield (AQY), dark respiration rate (Rd) and maximum net photosynthetic rate (Pmax) in Ulmus pumila leaf in Hunshandake Sandy Land (mean ± SD, n = 9)
处理 Treatment | LSP (μmol·m-2·s-1) | ΔLSP (%) | LCP (μmol·m-2·s-1) | ΔLCP (%) | AQY (mol·mol-1) | ΔAQY (%) | Rd (μmol·m-2·s-1) | ΔRd (%) | Pmax (μmol·m-2·s-1) | ΔPmax (%) |
---|---|---|---|---|---|---|---|---|---|---|
U1 | 1412.28 ± 12.11d | - | 9.40 ± 0.97a | - | 0.021 ± 0.000c | - | 1.15 ± 0.05d | - | 10.81 ± 0.28d | - |
U2 | 1048.94 ± 19.26c | 25.7 | 11.85 ± 1.05b | -26.1 | 0.015 ± 0.001b | 28.6 | 0.55 ± 0.13c | 52.2 | 9.95 ± 0.12c | 8.0 |
U3 | 920.46 ± 12.77b | 34.8 | 26.09 ± 1.30c | -177.6 | 0.013 ± 0.001a | 38.1 | 0.45 ± 0.11b | 60.9 | 9.37 ± 0.22b | 13.3 |
U4 | 696.84 ± 15.03a | 50.7 | 36.25 ± 1.77d | -285.6 | 0.012 ± 0.001a | 42.9 | 0.29 ± 0.06a | 74.8 | 8.98 ± 0.08a | 16.9 |
Fig. 2 Relationships of the maximum net photosynthetic rate (Pmax) and dark respiration rate (Rd), apparent quantum yield (AQY), light compensation point (LCP), light saturation point (LSP) in Ulmus pumila leaf in Hunshandake Sandy Land (mean ± SD, n = 9).
处理 Treatment | Rp (μmol·m-2·s-1) | ΔRp (%) | Vcmax (μmol·m-2·s-1) | ΔVcmax (%) | Jmax (μmol·m-2·s-1) | ΔJmax (%) | VTPU (μmol·m-2·s-1) | ΔVTPU (%) | CCP (μmol·m-2·s-1) | ΔCCP (%) |
---|---|---|---|---|---|---|---|---|---|---|
U1 | 6.73 ± 0.16d | - | 68.19 ± 0.10d | - | 69.46 ± 0.05d | - | 15.53 ± 0.77d | - | 45.37 ± 7.62a | - |
U2 | 4.94 ± 0.21c | 26.6 | 34.15 ± 0.04c | 49.9 | 32.90 ± 0.13c | 52.6 | 7.53 ± 0.30c | 51.5 | 108.27 ± 12.45b | -138.6 |
U3 | 1.48 ± 0.19b | 78.0 | 21.53 ± 0.10b | 68.4 | 18.89 ± 0.11b | 72.8 | 4.41 ± 0.07b | 71.6 | 120.22 ± 11.85c | -165.0 |
U4 | 0.19 ± 0.15a | 97.2 | 17.91 ± 0.42a | 73.7 | 16.90 ± 0.10a | 75.7 | 3.79 ± 0.26a | 75.6 | 162.21 ± 9.40d | -257.5 |
Table 2 Effects of different water table on photorespiratory rate (Rp), maximum RuBP saturated rate of carboxylation (Vcmax), maximum rate of electron transport (Jmax), rate of triose-phosphate utilization (VTPU) and CO2 compensation point (CCP) in Ulmus pumila leaf in Hunshandake Sandy Land (mean ± SD, n = 9)
处理 Treatment | Rp (μmol·m-2·s-1) | ΔRp (%) | Vcmax (μmol·m-2·s-1) | ΔVcmax (%) | Jmax (μmol·m-2·s-1) | ΔJmax (%) | VTPU (μmol·m-2·s-1) | ΔVTPU (%) | CCP (μmol·m-2·s-1) | ΔCCP (%) |
---|---|---|---|---|---|---|---|---|---|---|
U1 | 6.73 ± 0.16d | - | 68.19 ± 0.10d | - | 69.46 ± 0.05d | - | 15.53 ± 0.77d | - | 45.37 ± 7.62a | - |
U2 | 4.94 ± 0.21c | 26.6 | 34.15 ± 0.04c | 49.9 | 32.90 ± 0.13c | 52.6 | 7.53 ± 0.30c | 51.5 | 108.27 ± 12.45b | -138.6 |
U3 | 1.48 ± 0.19b | 78.0 | 21.53 ± 0.10b | 68.4 | 18.89 ± 0.11b | 72.8 | 4.41 ± 0.07b | 71.6 | 120.22 ± 11.85c | -165.0 |
U4 | 0.19 ± 0.15a | 97.2 | 17.91 ± 0.42a | 73.7 | 16.90 ± 0.10a | 75.7 | 3.79 ± 0.26a | 75.6 | 162.21 ± 9.40d | -257.5 |
处理 Treatment | 叶绿素a Chlorophyll a (mg·g-1 DW) | ΔChl a (%) | 叶绿素b Chlorophyll b (mg·g-1 DW) | ΔChl b (%) | 叶绿素a + b Chlorophyll a+b (mg·g-1 DW) | ΔChl a + b (%) | 类胡萝卜素 Carotenoid (mg·g-1 DW) | ΔCar (%) |
---|---|---|---|---|---|---|---|---|
U1 | 0.195 ± 0.004b | - | 0.065 ± 0.022a | - | 0.260 ± 0.006d | - | 0.055 ± 0.018a | - |
U2 | 0.191 ± 0.029b | 2.1 | 0.061 ± 0.010a | 6.2 | 0.252 ± 0.039c | 3.1 | 0.054 ± 0.009a | 1.8 |
U3 | 0.180 ± 0.024a | 7.7 | 0.058 ± 0.010b | 10.8 | 0.238 ± 0.034b | 8.5 | 0.067 ± 0.009b | -21.8 |
U4 | 0.170 ± 0.060a | 12.8 | 0.056 ± 0.003b | 13.8 | 0.226 ± 0.082a | 13.1 | 0.066 ± 0.001b | -20.0 |
Table 3 Effects of different water table on photosynthesis pigments content in Ulmus pumila leaf in Hunshandake Sandy Land (mean ± SD, n = 3)
处理 Treatment | 叶绿素a Chlorophyll a (mg·g-1 DW) | ΔChl a (%) | 叶绿素b Chlorophyll b (mg·g-1 DW) | ΔChl b (%) | 叶绿素a + b Chlorophyll a+b (mg·g-1 DW) | ΔChl a + b (%) | 类胡萝卜素 Carotenoid (mg·g-1 DW) | ΔCar (%) |
---|---|---|---|---|---|---|---|---|
U1 | 0.195 ± 0.004b | - | 0.065 ± 0.022a | - | 0.260 ± 0.006d | - | 0.055 ± 0.018a | - |
U2 | 0.191 ± 0.029b | 2.1 | 0.061 ± 0.010a | 6.2 | 0.252 ± 0.039c | 3.1 | 0.054 ± 0.009a | 1.8 |
U3 | 0.180 ± 0.024a | 7.7 | 0.058 ± 0.010b | 10.8 | 0.238 ± 0.034b | 8.5 | 0.067 ± 0.009b | -21.8 |
U4 | 0.170 ± 0.060a | 12.8 | 0.056 ± 0.003b | 13.8 | 0.226 ± 0.082a | 13.1 | 0.066 ± 0.001b | -20.0 |
Fig. 3 Effects of different water tables on the leaf water potential (ψp) in Ulmus pumila leaf in Hunshandake Sandy Land (mean ± SD, n = 3). Values with different letters indicate significant difference (p < 0.05) according to one-way ANOVA. U1, U2, U3 and U4 see Fig. 1.
Fig. 4 Effects of different water table on the soluble sugar content in Ulmus pumila leaf in Hunshandake Sandy Land (mean ± SD, n = 3). Values with different letters indicate significant difference (p < 0.05) according to one-way ANOVA. U1, U2, U3 and U4 see Fig. 1.
Fig. 5 Effects of different water table on proline content in Ulmus pumila leaf in Hunshandake Sandy Land (mean ± SD, n = 3). Values with different letters indicate significant difference (p < 0.05) according to one-way ANOVA. U1, U2, U3 and U4 see Fig. 1.
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