WANG Zhen-xing,FAN Shu-tian,YANG Yi-ming,et al.Effect of Shading on Photosynthetic Characteristics and Activity of Photosystem II in Leaves of Acanthopanax senticosus[J].Northern Horticulture,2015,39(01):148-150.[doi:10.11937/bfyy.201501040]
遮荫对刺五加叶片光合特性及光系统II活性的影响
- Title:
- Effect of Shading on Photosynthetic Characteristics and Activity of Photosystem II in Leaves of Acanthopanax senticosus
- Keywords:
- Keywords:Acanthopanax senticosus ; photosynthetic characteristics; JIP test; photosystem II
- 文献标志码:
- A
- 摘要:
- 摘 要：以刺五加为试材，研究了全光照（对照）和遮荫条件下（30%遮荫）刺五加叶片光合特性及光系统II活性。结果表明：刺五加全光照条件下较遮荫净光合速率（Pn）和气孔导度显著降低，而细胞间隙CO2浓度（Ci）显著升高。JIP分析发现，全光照条件下叶片的单位反应中心光能吸收（ABS/RC ）和热耗散（DI0/RC ）较遮荫处理显著升高。然而全光照条件下叶片的最大光化学效率（Fv/Fm ）、单位面积用于电子传递的光能（ET0/CS ）较遮荫显著降低。全光照条件抑制了刺五加叶片PSⅡ电子供体侧、受体侧电子传递，最终导致光合作用能力下降。
- Abstract:
- Abstract:Taking Acanthopanax senticosus as material，the changes of photosynthetic characteristics and activity of photosystem II in leaves of Acanthopanax senticosus under natural condition (control) and under continuous shading condition（30%shading）were studied respectively.The results showed that net photosynthetic rate (Pn) and stomatal conductance (Gs) decreased significantly，but intercellular CO2 concentration (Ci) increased under natural condition.JIP-test protocol revealed that the specific energy fluxes (per RC) for absorption ( ABS/RC ) and dissipation ( DIo/RC ) under natural condition increased significantly compared shading，however，the maximal quantum yield of PSII photochemistry ( Fv/Fm ) and the phenomenological energy fluxes (per excited cross-section， CS ) for electron transport ( ETo/CS ) decreased.Donor side and acceptor side of PSⅡ in leaves of Acanthopanax senticosus under natural condition could cause the inhibition of electron transportation significantly，which finally result in the decrease of photosynthesis.
参考文献/References:
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备注/Memo
第一作者简介：王振兴（1982-），男，河北邯郸人，硕士，研究实习员，现主要从事植物生理生态等研究工作。E-mail:zhenxinghd@aliyun.com.责任作者：艾军（1968-），男，吉林磐石人，博士，研究员，现主要从事果树生理生化等研究工作。E-mail:aijun1005@163.com.基金项目：吉林省科技发展计划资助项目（吉林省科技厅20110921）。