Effect of plant allelochemicals on seed germination and its ecological significance

CHEN Feng; MENG Yongjie; SHUAI Haiwei; LUO Xiaofeng; ZHOU Wenguan; LIU Jianwei; YANG Wenyu; SHU Kai

doi:10.13930/j.cnki.cjea.160632

Volume 25 Issue 1

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Article Navigation > Chinese Journal of Eco-Agriculture > 2017 > 25(1): 36-46

CHEN Feng, MENG Yongjie, SHUAI Haiwei, LUO Xiaofeng, ZHOU Wenguan, LIU Jianwei, YANG Wenyu, SHU Kai. Effect of plant allelochemicals on seed germination and its ecological significance[J]. Chinese Journal of Eco-Agriculture, 2017, 25(1): 36-46. doi: 10.13930/j.cnki.cjea.160632

Citation:

CHEN Feng, MENG Yongjie, SHUAI Haiwei, LUO Xiaofeng, ZHOU Wenguan, LIU Jianwei, YANG Wenyu, SHU Kai. Effect of plant allelochemicals on seed germination and its ecological significance[J]. Chinese Journal of Eco-Agriculture, 2017, 25(1): 36-46. doi: 10.13930/j.cnki.cjea.160632

Citation:

CHEN Feng, MENG Yongjie, SHUAI Haiwei, LUO Xiaofeng, ZHOU Wenguan, LIU Jianwei, YANG Wenyu, SHU Kai. Effect of plant allelochemicals on seed germination and its ecological significance[J]. Chinese Journal of Eco-Agriculture, 2017, 25(1): 36-46. doi: 10.13930/j.cnki.cjea.160632

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Effect of plant allelochemicals on seed germination and its ecological significance

doi: 10.13930/j.cnki.cjea.160632

Key Laboratory of Crop Ecophysiology and Farming Systems in Southwest China, Ministry of Agriculture/Institute of Ecological Agriculture, College of Agronomy, Sichuan Agricultural University, Chengdu 611130, China

Funds:

the Project of Education Department of Sichuan Province 16ZB0040

the China Postdoctoral Science Foundation of China 2014M552377

the China Postdoctoral Science Foundation of China 2016T90868

the National Basic Research Program of China 2011CB100402

More Information

Corresponding author: YANG Wenyu, E-mail:mssiyangwy@sicau.edu.cn; SHU Kai, E-mail:kshu@sicau.edu.cn
Received Date: 2016-07-17
Accepted Date: 2016-09-14
Publish Date: 2017-01-01

Abstract

Abstract

As a form of plant interaction, allelopathy plays a critical role in agriculture and forestry production, including biological invasion, continuous cropping obstacle and weed suppression. Consequently, it is important to guide production if we take advantage of plant allelopathy in crop production. Seed germination is a key stage of a plant and the regulatory mechanism of this physiological process by allelopathy has been paid more and more attention. Numerous studies demonstrated that allelochemicals could promote or inhibit seed germination of different plant species, which had an important influence on the plant growth and development, the composition and distribution of plant communities and the balance within the ecosystem. In this review, the effect of allelochemicals on seed germination and its ecological significance were summarized. On the one hand, the physiological and biochemical mechanisms underlying the inhibition effect of allelochemicals on seed germination were summarized. For example, allelochemicals restrained seed germination through inhibition of radicle and hypocotyl elongation. Allelochemicals also hindered seed germination by damaging subcellular structures, disturbed the synthesis and metabolism of both phytohormones and reactive oxygen species (ROS). Furthermore, allelochemicals delayed seed germination by mediating metabolism of protein, oil and starch, which provide energy during seed germination. On the other hand, we discussed the ecological significance of allelochemicals to seed germination from two perspectives, weeds control of farmland and ecosystem stabilization. Here, we summarized the effects of allelochemicals on weed suppression in natural settings, autotoxicity in agriculture and forestry, and biological invasion caused by allelopathy. Finally, based on current research progresses, future research directions in the field of allelopathy and autotoxicity were proposed and discussed.
- Allelopathy,
- Allelochemical,
- Seed germination,
- Ecosystem

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References(104)

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