Chin J Plant Ecol ›› 2010, Vol. 34 ›› Issue (9): 1025-1032.DOI: 10.3773/j.issn.1005-264x.2010.09.003
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ZHU Jun-Tao1,2,3, LI Xiang-Yi1,2,*(), ZHANG Xi-Ming1,2, LIN Li-Sha1,2, YANG Shang-Gong1,2,3
Received:
2010-02-08
Accepted:
2010-05-07
Online:
2010-02-08
Published:
2010-10-08
Contact:
LI Xiang-Yi
ZHU Jun-Tao, LI Xiang-Yi, ZHANG Xi-Ming, LIN Li-Sha, YANG Shang-Gong. Nitrogen allocation and partitioning within a leguminous and two non-leguminous plant species growing at the southern fringe of China’s Taklamakan Desert[J]. Chin J Plant Ecol, 2010, 34(9): 1025-1032.
变量 Variables | 花花柴 Karelinia caspica | 柽柳 Tamarix ramosissima | 骆驼刺 Alhagi sparsifolia | F值 F value |
---|---|---|---|---|
表观量子产额 Apparent quantum requirement (AQY) (mol·mol-1) | 0.038 ± 0.003a | 0.034 ± 0.004a | 0.029 ± 0.002b | 3.625* |
最大净光合速率 Maximum net photosynthetic rate (Pmax) (μmol·m-2·s-1) | 11.7 ± 2.3a | 9.5 ± 3.0a | 6.9 ± 1.3b | 12.724** |
最大电子传递速率 Maximum electron transport rate (Jmax) (μmol·m-2·s-1) | 105.2 ± 10.1a | 94.8 ± 7.5b | 87.8 ± 6.3b | 5.615* |
最大羧化速率 Maximum carboxylation efficiency (Vcmax) (μmol·m-2·s-1) | 62.5 ± 3.7a | 38.7 ± 4.6b | 30.8 ± 2.5c | 10.082** |
叶氮在羧化系统的比例 The fraction of the total leaf nitrogen allocated to carboxylation (PC) (g·g-1) | 0.23 ± 0.04a | 0.11 ± 0.03b | 0.07 ± 0.02c | 5.579*** |
叶氮在生物力能学组分的比例 The fraction of the total leaf nitrogen allocated to bioenergetics (PB) (g·g-1) | 0.04 ± 0.003 | 0.03 ± 0.003 | 0.03 ± 0.002 | 3.832 |
PC、PB之和 The sum of PC and PB (PC + B) (g·g-1) | 0.27 ± 0.05a | 0.14 ± 0.03b | 0.10 ± 0.02c | 6.215*** |
叶氮在捕光系统的比例 The fraction of the total leaf nitrogen allocated to light-harvesting components (PL) (g·g-1) | 0.16 ± 0.02b | 0.20 ± 0.02b | 0.29 ± 0.04a | 8.232** |
叶氮在光合系统的比例 The fraction of the total leaf nitrogen allocated to all components of the photosynthetic apparatus (PT) (g·g-1) | 0.43 ± 0.03a | 0.39 ± 0.05b | 0.38 ± 0.05b | 10.253** |
叶氮在羧化系统的数量 Nitrogen content in carboxylation (NC) (g·m-2) | 0.48 ± 0.04a | 0.31 ± 0.02b | 0.23 ± 0.03c | 12.325*** |
叶氮在生物力能学组分的数量 Nitrogen content in bioenergetics (NB) (g·m-2) | 0.08 ± 0.005 | 0.08 ± 0.003 | 0.07 ± 0.005 | 2.323 |
NC、NB之和 The sum of NC and NB (NC + B) (g·m-2) | 0.55 ± 0.03a | 0.39 ± 0.02b | 0.31 ± 0.03c | 14.536*** |
叶氮在捕光系统的数量 Nitrogen content in light-harvesting components (NL) (g·m-2) | 0.43 ± 0.02b | 0.56 ± 0.03b | 0.97 ± 0.02a | 8.752*** |
叶氮在光合系统的数量 Nitrogen content in all components of the photosynthetic apparatus (NP) (g·m-2) | 0.89 ± 0.06b | 0.96 ± 0.05b | 1.27 ± 0.07a | 5.672** |
NC、NP 之比 The fraction of the photosynthetic nitrogen partitioned to carboxylation (NC/NP) | 0.54 ± 0.04a | 0.32 ± 0.05b | 0.18 ± 0.07c | 10.517*** |
NB、NP 之比 The fraction of the photosynthetic nitrogen partitioned to bioenergetics (NB/NP) | 0.09 ± 0.01a | 0.08 ± 0.01a | 0.06 ± 0.01b | 4.265* |
NL、NP 之比 The fraction of the photosynthetic nitrogen partitioned to light-harvesting components (NL/NP) | 0.37 ± 0.02c | 0.58 ± 0.04b | 0.76 ± 0.05a | 13.360*** |
单位面积叶氮含量 Leaf nitrogen content per area (NA) (g·m-2) | 2.07 ± 0.10c | 2.81 ± 0.09b | 3.33 ± 0.13a | 9.226** |
光合氮素利用效率 Photosynthetic nitrogen-use efficiency (PNUE) (μmol·g-1·s-1) | 9.50 ± 0.93a | 8.89 ± 0.75a | 5.82 ± 0.28b | 6.054** |
Pmax、NP 之比 Photosynthetic-use efficiency of the photosynthetic nitrogen (Pmax/NP) (μmol·g-1·s-1) | 13.15 ± 1.55a | 9.86 ± 1.24b | 5.43 ± 1.15c | 4.835*** |
气孔导度 Stomatal conductance (Gs) (mol·m-2·s-1) | 0.26 ± 0.02 | 0.25 ± 0.02 | 0.24 ± 0.03 | 3.324 |
胞间 CO2 浓度 Intercellular CO2 concentration (Ci) (μmol·mol-1) | 220.5 ± 7.2 | 230.6 ± 5.5 | 237.8 ± 7.0 | 4.458 |
叶绿素含量 Leaf chlorophyll content (Chl) (μmol·m-2) | 0.24 ± 0.04b | 0.22 ± 0.03b | 0.46 ± 0.05a | 5.725** |
叶生物量分数 Leaf mass fraction (LMF) (g·g-1) | 0.65 ± 0.03a | 0.58 ± 0.04a | 0.35 ± 0.03b | 16.535*** |
叶面积比 Leaf area ratio (LAR) (cm2·g-1) | 97.5 ± 5.8a | 88.7 ± 7.5a | 58.5 ± 5.5b | 10.336** |
比叶面积 Specfic leaf area (SLA) (cm2·g-1) | 153.4 ± 18.3a | 145.2 ± 22.7b | 141.5 ± 17.8b | 2.415** |
Table 1 Means and SD of the variables of the three shrubs growing at the southern fringe of the Taklamakan Desert (n = 8)
变量 Variables | 花花柴 Karelinia caspica | 柽柳 Tamarix ramosissima | 骆驼刺 Alhagi sparsifolia | F值 F value |
---|---|---|---|---|
表观量子产额 Apparent quantum requirement (AQY) (mol·mol-1) | 0.038 ± 0.003a | 0.034 ± 0.004a | 0.029 ± 0.002b | 3.625* |
最大净光合速率 Maximum net photosynthetic rate (Pmax) (μmol·m-2·s-1) | 11.7 ± 2.3a | 9.5 ± 3.0a | 6.9 ± 1.3b | 12.724** |
最大电子传递速率 Maximum electron transport rate (Jmax) (μmol·m-2·s-1) | 105.2 ± 10.1a | 94.8 ± 7.5b | 87.8 ± 6.3b | 5.615* |
最大羧化速率 Maximum carboxylation efficiency (Vcmax) (μmol·m-2·s-1) | 62.5 ± 3.7a | 38.7 ± 4.6b | 30.8 ± 2.5c | 10.082** |
叶氮在羧化系统的比例 The fraction of the total leaf nitrogen allocated to carboxylation (PC) (g·g-1) | 0.23 ± 0.04a | 0.11 ± 0.03b | 0.07 ± 0.02c | 5.579*** |
叶氮在生物力能学组分的比例 The fraction of the total leaf nitrogen allocated to bioenergetics (PB) (g·g-1) | 0.04 ± 0.003 | 0.03 ± 0.003 | 0.03 ± 0.002 | 3.832 |
PC、PB之和 The sum of PC and PB (PC + B) (g·g-1) | 0.27 ± 0.05a | 0.14 ± 0.03b | 0.10 ± 0.02c | 6.215*** |
叶氮在捕光系统的比例 The fraction of the total leaf nitrogen allocated to light-harvesting components (PL) (g·g-1) | 0.16 ± 0.02b | 0.20 ± 0.02b | 0.29 ± 0.04a | 8.232** |
叶氮在光合系统的比例 The fraction of the total leaf nitrogen allocated to all components of the photosynthetic apparatus (PT) (g·g-1) | 0.43 ± 0.03a | 0.39 ± 0.05b | 0.38 ± 0.05b | 10.253** |
叶氮在羧化系统的数量 Nitrogen content in carboxylation (NC) (g·m-2) | 0.48 ± 0.04a | 0.31 ± 0.02b | 0.23 ± 0.03c | 12.325*** |
叶氮在生物力能学组分的数量 Nitrogen content in bioenergetics (NB) (g·m-2) | 0.08 ± 0.005 | 0.08 ± 0.003 | 0.07 ± 0.005 | 2.323 |
NC、NB之和 The sum of NC and NB (NC + B) (g·m-2) | 0.55 ± 0.03a | 0.39 ± 0.02b | 0.31 ± 0.03c | 14.536*** |
叶氮在捕光系统的数量 Nitrogen content in light-harvesting components (NL) (g·m-2) | 0.43 ± 0.02b | 0.56 ± 0.03b | 0.97 ± 0.02a | 8.752*** |
叶氮在光合系统的数量 Nitrogen content in all components of the photosynthetic apparatus (NP) (g·m-2) | 0.89 ± 0.06b | 0.96 ± 0.05b | 1.27 ± 0.07a | 5.672** |
NC、NP 之比 The fraction of the photosynthetic nitrogen partitioned to carboxylation (NC/NP) | 0.54 ± 0.04a | 0.32 ± 0.05b | 0.18 ± 0.07c | 10.517*** |
NB、NP 之比 The fraction of the photosynthetic nitrogen partitioned to bioenergetics (NB/NP) | 0.09 ± 0.01a | 0.08 ± 0.01a | 0.06 ± 0.01b | 4.265* |
NL、NP 之比 The fraction of the photosynthetic nitrogen partitioned to light-harvesting components (NL/NP) | 0.37 ± 0.02c | 0.58 ± 0.04b | 0.76 ± 0.05a | 13.360*** |
单位面积叶氮含量 Leaf nitrogen content per area (NA) (g·m-2) | 2.07 ± 0.10c | 2.81 ± 0.09b | 3.33 ± 0.13a | 9.226** |
光合氮素利用效率 Photosynthetic nitrogen-use efficiency (PNUE) (μmol·g-1·s-1) | 9.50 ± 0.93a | 8.89 ± 0.75a | 5.82 ± 0.28b | 6.054** |
Pmax、NP 之比 Photosynthetic-use efficiency of the photosynthetic nitrogen (Pmax/NP) (μmol·g-1·s-1) | 13.15 ± 1.55a | 9.86 ± 1.24b | 5.43 ± 1.15c | 4.835*** |
气孔导度 Stomatal conductance (Gs) (mol·m-2·s-1) | 0.26 ± 0.02 | 0.25 ± 0.02 | 0.24 ± 0.03 | 3.324 |
胞间 CO2 浓度 Intercellular CO2 concentration (Ci) (μmol·mol-1) | 220.5 ± 7.2 | 230.6 ± 5.5 | 237.8 ± 7.0 | 4.458 |
叶绿素含量 Leaf chlorophyll content (Chl) (μmol·m-2) | 0.24 ± 0.04b | 0.22 ± 0.03b | 0.46 ± 0.05a | 5.725** |
叶生物量分数 Leaf mass fraction (LMF) (g·g-1) | 0.65 ± 0.03a | 0.58 ± 0.04a | 0.35 ± 0.03b | 16.535*** |
叶面积比 Leaf area ratio (LAR) (cm2·g-1) | 97.5 ± 5.8a | 88.7 ± 7.5a | 58.5 ± 5.5b | 10.336** |
比叶面积 Specfic leaf area (SLA) (cm2·g-1) | 153.4 ± 18.3a | 145.2 ± 22.7b | 141.5 ± 17.8b | 2.415** |
Fig. 1 Maximum carboxylation rate (Vcmax) (A, B and C), maximum electron transport rate (Jmax) (D, E and F) and maximum net photosynthetic rate (Pmax) (G, H and I) as a function of N content in carboxylation (NC), bioenergetics (NB) and both carboxylation and bioenergetics (NC+B) of two non-leguminous species Karelinia caspica (★) and Tamarix ramosissima (■) and leguminous species Alhagi sparsifolia (●) growing at the southern fringe of the Taklamakan Desert. Lines fitted for the three species were given, respectively, if the difference between leguminous and non-leguminous species was significant according to the results of ANCOVA. Otherwise, only one line fitted for all the three studied species was given.
Fig. 2 Maximum net photosynthetic rate (Pmax) as a function of stomatal conductance (Gs) (A) and dark respiration rate (Rd) (B) and leaf construction cost (CC) as a function of specific leaf area (SLA) (C) of two non-leguminous species Karelinia caspica (★) and Tamarix ramosissima (■) and leguminous species Alhagi sparsifolia (●) growing at the southern fringe of the Taklamakan Desert. Lines fitted for the three species were given, respectively, if the difference between leguminous and non-leguminous species was significant according to the results of ANCOVA. Otherwise, only one line fitted for all the three studied species was given.
Fig. 3 Photosynthetic nitrogen-use efficiency (PNUE) as a function of N content in carboxylation (NC) (A), bioenergetics (NB) (B) and both carboxylation and bioenergetics (NC+B) (C), and maximum net photosynthetic rate (Pmax) (D), the fractions of total leaf N allocated to carboxylation (PC) (E) and both carboxylation and bioenergetics (PC+B) (F) of the three species growing at the southern fringe of the Taklamakan Desert.
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