Changes in plant growth and photosynthetic performance of Zizania latifolia exposed to different phosphorus concentrations under hydroponic condition
Changes in plant growth and photosynthetic performance of Zizania latifolia exposed to different phosphorus concentrations under hydroponic condition
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不同磷浓度水培条件下茭白植株生长及光合性能的变化
DOI：
10.1007/s11099-015-0149-7
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发表时间：
2015-06
期刊：
影响因子：
2.7
通讯作者：
Guo D. -P.
中科院分区：
文献类型：
--
作者：
Yan N.;Zhang Y. -L.;Xue H. -M.;Zhang X. -H.;Wang Z. -D.;Shi L. -Y.;Guo D. -P.
研究了不同磷素浓度对不同磷素浓度对野白叶片生长和光合作用的影响。植物在含有0、0.16、0.64和2.56 mM正磷酸盐的溶液中生长四周。结果表明，0.64 mM正磷酸盐处理的净光合速率(Pn)最高，与叶片有机磷含量最高相对应。低磷(low-P)抑制植株生长，影响株高、叶长、叶数、分蘖数、叶、鞘、茎、根和植株鲜重。此外，低磷(0.16 mM)处理不影响根系生长，但增加了根冠比，显著降低了叶片的叶绿素含量、净光合速率、气孔导度和蒸腾速率，但增加了胞间CO2浓度。此外，低磷显著降低了Rubisco的最大羧化速率、核酮糖-1，5-二磷酸的最大再生速率、PSII光化学有效量子产率、光化学猝灭系数和电子传递速率，但增加了非光化学猝灭。但低磷对光化学最大量子效率的影响不显著。高磷(2.56 mM)只引起气体交换参数的轻微下降。因此，缺磷植株的生长减慢可以归因于光合作用速率的降低。
The effects of phosphate concentration on plant growth and photosynthetic performance were examined in leaves of Zizania latifolia. Plants were grown for four weeks in a solution containing 0, 0.16, 0.64, and 2.56 mM orthophosphate. The results showed that the highest net photosynthetic rate (PN) was achieved at 0.64 mM orthophosphate, which corresponded to the maximum content of organic phosphorus in leaves. Low phosphorus (low-P) content in the culture solution inhibited plant growth, affecting plant height, leaf length, leaf number, tiller number, and fresh mass of leaf, sheath, culm, root, and total plant. In addition, we observed that low-P (0.16 mM) did not hinder the growth of roots but increased the root:shoot ratio, and significantly decreased the chlorophyll content, PN, stomatal conductance, and transpiration rate, but increased the intercellular CO2 concentration. Additionally, low-P significantly decreased the maximum carboxylation rate of Rubisco, the maximum rate of ribulose-1,5-bisphosphate regeneration, the effective quantum yield of PSII photochemistry, photochemical quenching coefficient, and electron transport rate, but increased the nonphotochemical quenching. However, the maximal quantum yield of PSII photochemistry was not significantly affected by low-P. High phosphorus (2.56 mM) caused only a slight decrease in gas-exchange parameters. Therefore, the decrease in growth of P-deficient Z. latifolia plants could be attributed to the lowered photosynthetic rate.
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DOI：
--
发表时间：
2004
期刊：
Acta Agronomica Sinica
影响因子：
--
作者：
Li Shao
通讯作者：
Li Shao
影响因子：
6.9
作者：
JACOB, J;LAWLOR, DW
通讯作者：
LAWLOR, DW
DOI：
--
发表时间：
1964-07
期刊：
The Journal of biological chemistry
影响因子：
--
作者：
Y. Sugino;Y. Miyoshi
通讯作者：
Y. Sugino;Y. Miyoshi
影响因子：
4
作者：
D. Loustau;M. B. Brahim;J. Gaudillère;E. Dreyer
通讯作者：
D. Loustau;M. B. Brahim;J. Gaudillère;E. Dreyer
影响因子：
4.3
作者：
A. Silber;R. Ganmore-Neumann;J. Ben-Jaacov
通讯作者：
A. Silber;R. Ganmore-Neumann;J. Ben-Jaacov