Allelopathy and the Role of Allelochemicals in Plant Defence

Latif, Sajid; Chiapusio, Geneviève; Weston, Leslie A.

doi:10.1016/bs.abr.2016.12.001

Cited by 168 publications

(137 citation statements)

References 96 publications

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“…Allelopathy is a long‐known mechanism by which the fitness of plants is increased through the release of allelochemicals, compounds that can interfere with growth or other vital processes, such as germination, in competing plant(s) (species) either directly or upon degradation or transformation in the soil. Well‐studied examples of this are phenolics, alkaloids and terpenoids . Although allelochemicals can be produced in different parts of the plant, here we focus on the ones secreted by roots.…”

Section: Roles Played By Plant Signaling Molecules In the Soil Ecosystemmentioning

confidence: 99%

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Role and exploitation of underground chemical signaling in plants

Guerrieri

Dong

Bouwmeester

2019

Pest Management Science

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The soil ecosystem is composed of a mixture of living organisms and non‐living matter as well as the complex interactions between them. In the past 100 years or so, agricultural soil ecosystems have been strongly affected by agricultural practices such as tillage and the use of pesticides and fertilizers, which strongly affect soil nutrient composition, pH and biodiversity. In modern pest management, however, the focus is gradually shifting from crop production through agricultural practices to soil ecosystem protection. In this review we discuss how the underground chemical signals secreted by plant roots play a role in keeping the soil ecosystem in balance and how they affect plant fitness by shaping the root biome, increasing nutrient availability, promoting symbiosis, and attracting beneficial organisms and repelling harmful ones, including other plants. We review a number of fascinating cases, such as signaling molecules with dual, positive and negative, functions and bacterial quorum sensing mimicking molecules. Finally, examples of how these compounds can be exploited in modern pest management are reviewed, and the prospects for future developments discussed. © 2019 The Authors. Pest Management Science published by John Wiley & Sons Ltd on behalf of Society of Chemical Industry.

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Section: Roles Played By Plant Signaling Molecules In the Soil Ecosystemmentioning

confidence: 99%

“…Well-studied examples of this are phenolics, alkaloids and terpenoids. 86 Although allelochemicals can be produced in different parts of the plant, here we focus on the ones secreted by roots.…”

Section: Allelopathymentioning

confidence: 99%

Role and exploitation of underground chemical signaling in plants

Guerrieri

Dong

Bouwmeester

2019

Pest Management Science

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“…The most common physiological parameters used to determine the allelopathic effects are the germination (%) and the initial seedlings growth of target species. However, the mode(s) of action of allelochemicals include membrane permeability, water and nutrients uptake, respiration, photosynthesis, protein and nucleic acid synthesis and growth regulation in susceptible plants (34). Concerning seed germination, Hanley and Whiting (25) reported that phytotoxic allelochemicals present in the extracts appear to mediate a disruption of normal cellular metabolism, affecting reserve mobilization, a process that usually takes place during early stages of seed germination (23).…”

Section: Germination and Initial Growth Assaysmentioning

confidence: 99%

Herbicide activity of natural compounds from Baccharis spp Herbicidal activity of natural compounds from Baccharis spp. on the germination and seedlings growth of Lactuca sativa and Bidens pilosa

Dias¹,

Nozari²,

Santarém³

2017

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CITATIONS 0 READS 401 3 authors: Some of the authors of this publication are also working on these related projects: Effect of PGPG on alleviating salinity stress in maize View project Characterization of Streptomyces spp. isolates from Fabaceae rhizosphere as Plant Growth Promoting Rhizobacteria in soybean [Glycine max (L.) Merrill] View project ABSTRACTWe evaluated the effects of aqueous and ethanolic extracts from 3-Baccharis species (B. dentata, B. uncinella and B. anomala) on the germination and seedlings growth of Lactuca sativa (model species) and Bidens pilosa (weed), and by chemical analysis, the phenolic compounds were determined in extracts. Aqueous and ethanolic extracts of B. dentata, B. uncinella and B. anomala were tested at 2.5, 5, 7.5 and 10% concentrations. Allelopathic effects of three Baccharis species were variable. The B. pilosa was more sensitive to the extracts than L. sativa and germination was inhibited with ethanolic extracts of B. anomala and B. uncinella from 5 to 10%. Aqueous extract of B. dentata and B. uncinella at 10% concentration reduced the germination of B. pilosa by 80%. The ethanolic extracts of B. uncinella (2.5 to 10%) and B. anomala (5 to 10%) caused 100% mortality of seedlings. Total phenolic compounds were more abundant in aqueous extracts. Amongst the phenolics, catechin was most abundant (1.61 to 6.16 mg g -1 DM) in aqueous and ethanolic extracts of Baccharis species tested. This study showed that Baccharis uncinella may be used as an alternative bioherbicide to control the weeds in agroecosystems.

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“…Allelopathy is defined as harmful or beneficial effect of one plant on another mediated by the production of chemical compounds, called allelochemicals, which are released into the environment [Lehoczky et al, 2011;Latif et al, 2017]. Release of these allelochemicals, was already demonstrated as a major factor in regulating the plant communities structure in both natural and agroecosystem.…”

Section: Introductionmentioning

confidence: 99%

Allelopathic Potential of Jasminum Officinale on Weed Species

Rodino¹,

Buţu²,

Butu³

2017

BUASVMCN-ASB

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Allelopathy is generally defined as any direct or indirect harmful or beneficial effect of one plant on another mediated by the production allelochemicals. The scope of this study was the evaluation of the potential allelopathic effect of Jasminum officinale against some weed species. The effects of extracts obtained from root, stem and leaves of J. officinale, were evaluated against ragweed (Ambrosia artemisiifolia), ryegrass (Lolium perenne), and Johnsonn grass (Sorghum halepense). The aqueous leachates of jasmine demonstrated promising allelopathic potential by inhibiting seed germination and radicle elongation of all tested species. The best results were observed against Johnsonn grass, with the leaves extract strongly inhibiting the germination rate, while the roots extract inhibited the radicle elongation. The more profound research in the field of allelopathy will eventually lead to the development of bioproducts designed for pest or weed control using allelochemicals.

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Allelopathy and the Role of Allelochemicals in Plant Defence

Cited by 168 publications

References 96 publications

Role and exploitation of underground chemical signaling in plants

Role and exploitation of underground chemical signaling in plants

Herbicide activity of natural compounds from Baccharis spp Herbicidal activity of natural compounds from Baccharis spp. on the germination and seedlings growth of Lactuca sativa and Bidens pilosa

Allelopathic Potential of Jasminum Officinale on Weed Species

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