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Effect of Shading on Photosynthetic Characteristics and Activity of Photosystem II in Leaves of Acanthopanax senticosus(PDF)

《北方园艺》[ISSN:1001-0009/CN:23-1247/S]

Issue:
2015年01
Page:
148-150
Research Field:
Publishing date:

Info

Title:
Effect of Shading on Photosynthetic Characteristics and Activity of Photosystem II in Leaves of Acanthopanax senticosus
Author(s):
WANG Zhen-xing; FAN Shu-tian; YANG Yi-ming; AI Jun; ZHANG Qing-tian; HE Wei
(Institute of Special Wild Economic Animal and Plant Science，Chinese Academy of Agricultural Sciences，Changchun，Jilin 130112)
Keywords:
Keywords:Acanthopanax senticosus ; photosynthetic characteristics; JIP test; photosystem II
PACS:
-
DOI:
10.11937/bfyy.201501040
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.

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Last Update: 2015-02-16