Abstract
Allelopathy is an ecological phenomenon in which organisms interfere with each other. As a management strategy in agricultural systems, allelopathy can be mainly used to control weeds, resist pests, and disease and improve the interaction of soil nutrition and microorganisms. Volatile organic compounds (VOCs) are allelochemicals volatilized from plants and have been widely demonstrated to have different ecological functions. This review provides the recent advance in the allelopathic effects of VOCs on plants, such as growth, competition, dormancy, resistance of diseases and insect pests, content of reactive oxygen species (ROS), enzyme activity, respiration, and photosynthesis. VOCs also participate in plant-to-plant communication as a signaling substance. The main methods of collection and identification of VOCs are briefly summarized in this article. It also points out the disadvantages of VOCs and suggests potential directions to enhance research and solve mysteries in this emerging area. It is necessary to study the allelopathic mechanisms of plant VOCs so as to provide a theoretical basis for VOC applications. In conclusion, allelopathy of VOCs released by plants is a more economical, environmentally friendly, and effective measure to develop substantial agricultural industry by using the allelopathic effects of plant natural products.
Highlights
The concept of “allelopathy” was first proposed by Austrian scientist Hans Molisch in 1937 and mainly referred to the chemical relationship of plant interaction
Plant Volatile organic compounds (VOCs) vary by species, and they are related to the abundance of neighboring plant species and plant species composition [19,20]
This review summarizes the allelopathy of VOCs of plants including growth, competition, dormancy, resistance of pests and diseases, respiration, photosynthesis, reactive oxygen species (ROS) content, enzyme activity, and signaling
Summary
The concept of “allelopathy” was first proposed by Austrian scientist Hans Molisch in 1937 and mainly referred to the chemical relationship of plant interaction. VOCs are a kind of natural and environmentally friendly chemical the studies on allelopathy of plants VOCs have not been systematically reviewed and substances that volatilize from plants and are used as natural herbicides and fungicides reported. We think VOCs that volatilize from plants and are used as natural herbicides and fungicides to protect have a much broader range of the potential applications In this context, study on the neighboring plants from stress and increase crop yields [49]. The review mainly focuses on the recent studies of allelopathy of plants VOCs, reof VOCs is important to the future development of green agriculture. We present the evidence from the references to VOCs. these roles to deepen the understanding of allelopathy of plants VOCs
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