scholarly journals Research Advances in Allelopathy of Volatile Organic Compounds (VOCs) of Plants

Horticulturae ◽  
2021 ◽  
Vol 7 (9) ◽  
pp. 278
Author(s):  
Yiqi Xie ◽  
Libo Tian ◽  
Xu Han ◽  
Yan Yang
Keyword(s):  
Volatile Organic Compounds ◽  
Organic Compounds ◽  
Insect Pests ◽  
Ecological Functions ◽  
Effective Measure ◽  
Agricultural Industry ◽  
Plant Communication ◽  
Soil Nutrition ◽  
Volatile Organic ◽  
Allelopathic Effects

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.

scholarly journals Volatile metabolites of willows determining host discrimination by adult Plagiodera versicolora

2021 ◽  
Author(s):  
Jiahao Ling ◽  
Xiaoping Li ◽  
Guo Yang ◽  
Tongming Yin
Keyword(s):  
Volatile Organic Compounds ◽  
Organic Compounds ◽  
Insect Pests ◽  
Leaf Beetle ◽  
Gas Chromatography Mass Spectrometry ◽  
Host Discrimination ◽  
Plagiodera Versicolora ◽  
Volatile Metabolites ◽  
Hexenyl Acetate ◽  
Volatile Organic

AbstractPlagiodera versicolora Laicharting is a highly damaging leaf beetle foraging on willow leaves. In willow germplasm collections, observation has shown that Salix suchowensis Cheng was severely foraged by this leaf beetle while Salix triandra L. was damage free or only slightly damaged. Results of olfactometer bioassays show that the headspace volatiles from leaves of S. triandra significantly repelled adult beetles, suggesting that this species produces volatile repellents against P. versicolora. S. suchowensis had no effect on the beetles. Gas chromatography-mass spectrometry was carried out to profile the headspace volatile organic compounds and 23 compounds from leaves of the alternate species in significantly different concentrations were detected. The effects of 20 chemical analogs on host discrimination were examined. Olfactory response to these chemicals showed that o-cymene, a S. suchowensis specific constituent, significantly attracted adult P. versicolora. In contrast, cis-3-hexenyl acetate, a constituent concentrated more in S. triandra than in S. suchowensis, significantly repelled beetles. Mixing o-cymene and cis-3-hexenyl acetate in comparable concentrations as in the volatiles of S. suchowensis demonstrated that the latter could mask the attracting effect of the former, causing a neutral response by adult beetles to leaves of S. suchowensis against clean air. In addition, chemical analogs have the same effect as plants when resembling volatile organic compounds in real samples. Two volatile metabolites were detected triggering host discrimination by one of the most damaging insect pests to host and non-host willows. The two metabolites are of considerable potential for use as olfactory signs in managing the beetles.

scholarly journals Allelopathic effects of volatile organic compounds released from Pinus halepensis needles and roots

2019 ◽  
Vol 9 (14) ◽  
pp. 8201-8213 ◽  
Author(s):  
Mathieu Santonja ◽  
Anne Bousquet‐Mélou ◽  
Stéphane Greff ◽  
Elena Ormeño ◽  
Catherine Fernandez
Keyword(s):  
Volatile Organic Compounds ◽  
Organic Compounds ◽  
Pinus Halepensis ◽  
Volatile Organic ◽  
Allelopathic Effects

Effects of nitrogen fertilization on insect pests, their parasitoids, plant diseases and volatile organic compounds in Brassica napus

2013 ◽  
Vol 43 ◽  
pp. 79-88 ◽  
Author(s):  
Eve Veromann ◽  
Merje Toome ◽  
Astrid Kännaste ◽  
Riina Kaasik ◽  
Lucian Copolovici ◽  
...  
Keyword(s):  
Brassica Napus ◽  
Volatile Organic Compounds ◽  
Organic Compounds ◽  
Nitrogen Fertilization ◽  
Insect Pests ◽  
Plant Diseases ◽  
Volatile Organic

scholarly journals Defensive functions of volatile organic compounds and essential oils from northern white-cedar in China

2020 ◽  
Vol 20 (1) ◽  
Author(s):  
Liping Bai ◽  
Wenjia Wang ◽  
Juan Hua ◽  
Zhifu Guo ◽  
Shihong Luo
Keyword(s):  
Volatile Organic Compounds ◽  
Essential Oils ◽  
Organic Compounds ◽  
Pathogenic Fungi ◽  
Early Spring ◽  
Curvularia Lunata ◽  
Plant Communication ◽  
Volatile Organic ◽  
Cultivated Plant ◽  
High Concentrations

Abstract Background Plants are known to emit diverse volatile organic compounds (VOCs), which may function as signaling substances in plant communication with other organisms. Thuja occidentalis, which is widely cultivated throughout China, releases aromatic VOCs into the air in winter and early spring. The relationship of this cultivated plant with its neighboring plants is necessary for the conservation of biodiversity. Results (−)-α-thujone (60.34 ± 5.58%) was found to be the major component in VOCs from the Shenyang population. The essential oils (EOs) from the Kunming and Shenyang populations included the major components (−)-α-thujone, fenchone, (+)-β-thujone, and (+)-hibaene, identified using GC-MS analyses. (−)-α-thujone and (+)-hibaene were purified and identified by NMR identification. EOs and (−)-α-thujone exhibited valuable phytotoxic activities against seed germination and seedling growth of the plants Taraxacum mongolicum and Arabidopsis thaliana. Moreover, the EOs displayed potent inhibitory activity against pathogenic fungi of maize, including Fusarium graminearum, Curvularia lunata, and Bipolaris maydis, as well as one human fungal pathogen, Candida albicans. Quantitative analyses revealed high concentrations of (−)-α-thujone in the leaves of T. occidentalis individuals from both the Shenyang and Kunming populations. However, (−)-α-thujone (0.18 ± 0.17 μg/g) was only detected in the rhizosphere soil to a distance of 0.5 m from the plant. Conclusions Taken together, our results suggest that the phytotoxic effects and antifungal activities of the EOs and (−)-α-thujone in T. occidentalis certainly increased the adaptability of this plant to the environment. Nevertheless, low concentrations of released (−)-α-thujone indicated that reasonable distance of T. occidentalis with other plant species will impair the effects of allelochemical of T. occidentalis.

scholarly journals Silicon and Plant Natural Defenses against Insect Pests: Impact on Plant Volatile Organic Compounds and Cascade Effects on Multitrophic Interactions

Plants ◽  
2019 ◽  
Vol 8 (11) ◽  
pp. 444 ◽  
Author(s):  
Leroy ◽  
Tombeur ◽  
Walgraffe ◽  
Cornélis ◽  
Verheggen
Keyword(s):  
Volatile Organic Compounds ◽  
Organic Compounds ◽  
Insect Pests ◽  
Insect Herbivory ◽  
Trophic Levels ◽  
Soil Parameters ◽  
Biotic Stresses ◽  
Plant Volatile ◽  
Volatile Organic ◽  
Cascade Effects

Environmental factors controlling silicon (Si) accumulation in terrestrial plant are key drivers to alleviate plant biotic stresses, including insect herbivory. While there is a general agreement on the ability of Si-enriched plant to better resist insect feeding, recent studies suggest that Si also primes biochemical defense pathways in various plant families. In this review, we first summarize how soil parameters and climate variables influence Si assimilation in plants. Then, we describe recent evidences on the ability of Si to modulate plant volatile emissions, with potential cascade effects on phytophagous insects and higher trophic levels. Even though the mechanisms still need to be elucidated, Si accumulation in plants leads to contrasting effects on the levels of the three major phytohormones, namely jasmonic acid, salicylic acid and ethylene, resulting in modified emissions of plant volatile organic compounds. Herbivore-induced plant volatiles would be particularly impacted by Si concentration in plant tissues, resulting in a cascade effect on the attraction of natural enemies of pests, known to locate their prey or hosts based on plant volatile cues. Since seven of the top 10 most important crops in the world are Si-accumulating Poaceae species, it is important to discuss the potential of Si mobility in soil-plant systems as a novel component of an integrated pest management.

scholarly journals Sniffing on Microbes: Diverse Roles of Microbial Volatile Organic Compounds in Plant Health

2013 ◽  
Vol 26 (8) ◽  
pp. 835-843 ◽  
Author(s):  
Vasileios Bitas ◽  
Hye-Seon Kim ◽  
Joan W. Bennett ◽  
Seogchan Kang
Keyword(s):  
Volatile Organic Compounds ◽  
Organic Compounds ◽  
Plant Health ◽  
Long Distance ◽  
Plant Communication ◽  
Physiological Processes ◽  
Volatile Organic ◽  
Ecological Roles ◽  
Microbial Volatile Organic Compounds ◽  
Porous Soils

Secreted proteins and metabolites play diverse and critical roles in organismal and organism–environment interactions. Volatile organic compounds (VOC) can travel far from the point of production through the atmosphere, porous soils, and liquid, making them ideal info-chemicals for mediating both short- and long-distance intercellular and organismal interactions. Critical ecological roles for animal- and plant-derived VOC in directing animal behaviors and for VOC as a language for plant-to-plant communication and regulators of various physiological processes have been well documented. Similarly, microbial VOC appear to be involved in antagonism, mutualism, intra- and interspecies regulation of cellular and developmental processes, and modification of their surrounding environments. However, the available knowledge of how microbial VOC affect other organisms is very limited. Evidence supporting diverse roles of microbial VOC with the focus on their impact on plant health is reviewed here. Given the vast diversity of microbes in nature and the critical importance of microbial communities associated with plants for their ecology and fitness, systematic exploration of microbial VOC and characterization of their biological functions and ecological roles will likely uncover novel mechanisms for controlling diverse biological processes critical to plant health and will also offer tangible practical benefits in addressing agricultural and environmental problems.

scholarly journals On the capacity of putative plant odorant-binding proteins to bind volatile plant isoprenoids

2021 ◽  
Author(s):  
Deborah Giordano ◽  
Angelo Facchiano ◽  
Sabato D’Auria ◽  
Francesco Loreto
Keyword(s):  
Volatile Organic Compounds ◽  
Data Base ◽  
Organic Compounds ◽  
In Silico ◽  
Simulation Experiments ◽  
Odorant Binding Proteins ◽  
Plant Communication ◽  
Volatile Organic ◽  
Odorant Binding ◽  
Data Base Search

AbstractPlants use odors not only to recruit other organisms for symbioses, but to ‘talk’ to each other. Volatile organic compounds (VOCs) from “emitting” plants inform the “receiving” (listening) plants of impending stresses or simply of their presence. However, the receptors that allow receivers to perceive the volatile cue are elusive. Most likely, plants (as animals) have odorant bind proteins (OBPs), and in fact few OBPs are known to bind “stress-induced” plant VOCs. We investigated whether OBPs may bind volatile constitutive and stress-induced isoprenoids, the most emitted plant VOCs, with well-established roles in plant communication. First, we performed a data base search that generated a list of candidate plant OBPs. Second, we investigated in silico the ability of the identified candidate plant OBPs to bind VOCs by molecular simulation experiments. Our results show that monoterpenes can bind the same OBPs that were described to bind other stress-induced VOCs. Whereas, the constitutive hemiterpene isoprene does not bind any investigated OBP and may not have an info-chemical role. We conclude that, as for animal, plant OBPs may bind different VOCs. Despite being generalist and not specialized, plant OBPs may play an important role in allowing plants to eavesdrop messages sent by neighboring plants.

Research Review on the Ecological Function of Biogenic Volatile Organic Compounds

2014 ◽  
Vol 641-642 ◽  
pp. 1163-1167
Author(s):  
Ling Yue Lv ◽  
Hong Yuan Li ◽  
Jia Nan Yang
Keyword(s):  
Volatile Organic Compounds ◽  
Organic Compounds ◽  
Plant Communities ◽  
Physical State ◽  
Plant Secondary Metabolites ◽  
Research Review ◽  
Pathogenic Microorganisms ◽  
Biogenic Volatile Organic Compounds ◽  
Ecological Functions ◽  
Volatile Organic

Biogenic volatile organic compounds are a class of small molecule compounds produced by the plant secondary metabolites. Although the contents are relatively low, but have strong ecological effects. In plant communities, the plant can hinder the growth of competing plants around by releasing BVOCs, and it could also enhance the ability to resist predators. At the same time, it can inhibit the pathogenic microorganisms and enhance the disease resistance. In addition, BVOCs can regulate the body's mental and physical state to exert the health effects. Therefore, the study of the BVOCs’ ecological functions is of great significance.

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