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Temperature dependence of allelopathy duality and its influence on boreal forest succession-A case analysis of Picea schrenkiana

xiao ruan, li yang, min-fen yu, zhao-hui li, Ying-xian zhao, cun-de pan, de-an jiang, qiang wang
doi: https://doi.org/10.1101/516823
xiao ruan
Ningbo Institute of Technology, Zhejiang University;
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li yang
Ningbo Institute of Technology, Zhejiang University;
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min-fen yu
Ningbo Forest Farm,;
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zhao-hui li
Ningbo Institute of Technology, Zhejiang University;
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Ying-xian zhao
Ningbo Institute of Technology, Zhejiang University,;
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cun-de pan
College of Forestry and Horticulture, Xinjiang Agricultural University;
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de-an jiang
Ningbo Institute of Technology, Zhejiang University;
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qiang wang
zhejiang university
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  • For correspondence: wangqiangsky@263.net
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Abstract

Global warming in conjunction with various biotic or abiotic interferences has been jeopardizing the ecosystem of boreal forests. By integrating field inspection with experimental simulation, this work comprehensively investigated the allelopathic effects of a key allelochemical 3,4-dihydroxyacetophenone (DHAP) in the exudates of P. schrenkiana needles on its seed and seedling growth, endogenous hormone metabolism and antioxidant enzyme activity, identified the existence of DHAP allelopathy duality at a certain temperature with an inflection concentration point (e.g. about 0.25 mM at dark/light temperature of 4/12 °C) as the boundary between promotional and inhibitory effect, and verified that the inflection point of DHAP concentration would inevitably shift to a lower level as temperature increased. Consequently, this paper gives a scientific explanation into the intrinsic mechanism of P. schrenkiana degradation due to allelopathy, but also presents a new approach to explore the relationship between forest evolution and global warming.

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The copyright holder for this preprint is the author/funder, who has granted bioRxiv a license to display the preprint in perpetuity. All rights reserved. No reuse allowed without permission.
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Posted January 10, 2019.
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Temperature dependence of allelopathy duality and its influence on boreal forest succession-A case analysis of Picea schrenkiana
xiao ruan, li yang, min-fen yu, zhao-hui li, Ying-xian zhao, cun-de pan, de-an jiang, qiang wang
bioRxiv 516823; doi: https://doi.org/10.1101/516823
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Temperature dependence of allelopathy duality and its influence on boreal forest succession-A case analysis of Picea schrenkiana
xiao ruan, li yang, min-fen yu, zhao-hui li, Ying-xian zhao, cun-de pan, de-an jiang, qiang wang
bioRxiv 516823; doi: https://doi.org/10.1101/516823

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