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Photosynthetic functions of leaves affected by the bibenzyl batatasin-III

Wallstedt, A LU ; Dube, SL and Nilsson, MC (2002) 1st European Allelopathy Symposium p.45-58
Abstract
In northern Sweden, Empetrum hermaphroditum Hagerup dominates the ground layer vegetation in post fire successions by suppressing other plant species. Previous studies suggest that this negative effect by E. hermaphroditum may be explained, at least in part, by the release of phenolic compounds, particularly batatasin-III, from foliage to soil. In this pilot study, we evaluated the effect of batatasin-III on photosynthesis by applying the compound (0.1, 1.0, or 2.8 mM) directly to the transpiration stream of intact Spinacia oleracea L. (spinach) and Betula pendula L. (birch) leaves. Within the concentration range used, batatasin-III had a small, but significant, effect on photosynthesis. The strongest effect was found on CO2 assimilation,... (More)
In northern Sweden, Empetrum hermaphroditum Hagerup dominates the ground layer vegetation in post fire successions by suppressing other plant species. Previous studies suggest that this negative effect by E. hermaphroditum may be explained, at least in part, by the release of phenolic compounds, particularly batatasin-III, from foliage to soil. In this pilot study, we evaluated the effect of batatasin-III on photosynthesis by applying the compound (0.1, 1.0, or 2.8 mM) directly to the transpiration stream of intact Spinacia oleracea L. (spinach) and Betula pendula L. (birch) leaves. Within the concentration range used, batatasin-III had a small, but significant, effect on photosynthesis. The strongest effect was found on CO2 assimilation, but there were also significant effects on respiration and on maximum quantum yield of chlorophyll fluorescence (Fv / Fm). In spinach leaves treated with 2.8 mM of batatasin-III, a 14 % decrease in Fv / Fm-685 coincided with a 30 % inhibition of CO2 assimilation rates. It is possible, that the inhibition of photosynthesis by batatasin-III was caused by direct effects on chloroplast membrane energization processes and subsequent control on the primary photochemistry of PSII. The variable fluorescence kinetics indicated that maximum quantum yield of variable fluorescence of PSII was depressed while continued upstream transported allowed oxidation of the primary electron acceptor. (Less)
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author
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organization
publishing date
type
Chapter in Book/Report/Conference proceeding
publication status
published
subject
host publication
Allelopathy: From Molecules to Ecosystems
pages
45 - 58
publisher
Science Press
conference name
1st European Allelopathy Symposium
conference location
Vigo, Spain
conference dates
0001-01-02
external identifiers
  • wos:000181977500003
ISBN
9781578082544
language
English
LU publication?
yes
additional info
The information about affiliations in this record was updated in December 2015. The record was previously connected to the following departments: Department of Ecology (Closed 2011) (011006010)
id
41c8c41b-a2f5-4475-8be9-0341dfcd092f (old id 1406950)
date added to LUP
2016-04-04 11:02:19
date last changed
2018-11-21 21:02:16
@inproceedings{41c8c41b-a2f5-4475-8be9-0341dfcd092f,
  abstract     = {In northern Sweden, Empetrum hermaphroditum Hagerup dominates the ground layer vegetation in post fire successions by suppressing other plant species. Previous studies suggest that this negative effect by E. hermaphroditum may be explained, at least in part, by the release of phenolic compounds, particularly batatasin-III, from foliage to soil. In this pilot study, we evaluated the effect of batatasin-III on photosynthesis by applying the compound (0.1, 1.0, or 2.8 mM) directly to the transpiration stream of intact Spinacia oleracea L. (spinach) and Betula pendula L. (birch) leaves. Within the concentration range used, batatasin-III had a small, but significant, effect on photosynthesis. The strongest effect was found on CO2 assimilation, but there were also significant effects on respiration and on maximum quantum yield of chlorophyll fluorescence (Fv / Fm). In spinach leaves treated with 2.8 mM of batatasin-III, a 14 % decrease in Fv / Fm-685 coincided with a 30 % inhibition of CO2 assimilation rates. It is possible, that the inhibition of photosynthesis by batatasin-III was caused by direct effects on chloroplast membrane energization processes and subsequent control on the primary photochemistry of PSII. The variable fluorescence kinetics indicated that maximum quantum yield of variable fluorescence of PSII was depressed while continued upstream transported allowed oxidation of the primary electron acceptor.},
  author       = {Wallstedt, A and Dube, SL and Nilsson, MC},
  booktitle    = {Allelopathy: From Molecules to Ecosystems},
  isbn         = {9781578082544},
  language     = {eng},
  pages        = {45--58},
  publisher    = {Science Press},
  title        = {Photosynthetic functions of leaves affected by the bibenzyl batatasin-III},
  year         = {2002},
}