Lichen allelopathy: a new hope for limiting chemical herbicide and pesticide use

Kalra, Rishu; Conlan, Xavier A.; Goel, Mayurika

doi:10.1080/09583157.2021.1901071

Cited by 11 publications

(7 citation statements)

References 106 publications

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“…It is thought that the allelochemicals' secondary metabolites of this organism containing aliphatic, aromatic and terpenoid halogenated components are involved in various chemical interactions, responsible for their antimicrobial properties (Kosanić et al, 2014). This idea is reinforced by a number of studies that show the negative effect of these lichens' substances on the biomass of soil microbes, tested both in the field and the laboratory (Pandey, 2017;Kalra et al, 2021). Soil enzyme activity displayed an opposite pattern compared to that of microbial biomass, with higher values in crusted soils except for LAP and PPO.…”

Section: Discussionmentioning

confidence: 99%

Spatial heterogeneity of Cladonia rangiformis and Erica spp. induces variable effects on soil microbial communities which are most robust in bare-soil microhabitats

et al. 2022

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Abstract. Biological soil crust (BSC) is an essential part of arid and semiarid regions; however information concerning the spatial heterogeneity of the interactions between crust, plants and soil microbes is limited. Sampling was confined to an area either covered with Erica spp. shrubs interspaced by crust cover (Cladonia rangiformis) or uncovered by crust. Along a straight line of 100 cm from the base of the shrubs towards their periphery and at successive distances of 20 cm, soil samples were collected once. The biomass, the composition and the network of interactions among the members of the soil microbial communities as well as the activity of soil enzymes involved in the C, N and P cycle were estimated. Crust coverage exerted a significant allelopathic negative effect on soil microbial biomasses due to the leaching of lichen's antimicrobial substances. In contrast, the crust effect on enzyme activity was positive, probably due to the amelioration of soil abiotic conditions. The distance from the base of Erica spp. affected the total microbial and bacterial biomass, with lower values at the base of the shrubs. The composition of microbial communities between the different sampling points exhibited significant dissimilarities. Network analysis revealed that in uncrusted soils the most connected microbial network was at samples collected from a distance of >60 cm (bare soils), while in crusted soils this was at samples collected at the base of shrubs. We concluded that microbial biomass showed limited response to spatial heterogeneity, while the composition and the topology of interactions among the microbial members reflected a heterogeneous soil environment existing on a small spatial scale in Mediterranean areas. The microbial community in bare soil appeared to be the most robust against future disturbances.

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Section: Discussionmentioning

confidence: 99%

Spatial heterogeneity of Cladonia rangiformis and Erica spp. induces variable effects on soil microbial communities which are most robust in bare-soil microhabitats

et al. 2022

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“…Microbial pesticides of toxic action, crude extracts of plant or microbial origin, and formulations of individual natural compounds (or their mixtures) may be considered as BCHs [ 118 , 119 ] ( Figure 1 ). The search for potential AIs for BCHs is typically based on the chemical ecology approach: plants can produce phytotoxic metabolites to compete with other species, while microorganisms can employ them for plant colonization [ 120 , 121 , 122 , 123 ].…”

Section: Perspectives Of Natural Compounds As Biorational Herbicidesmentioning

confidence: 99%

Modern Approaches for the Development of New Herbicides Based on Natural Compounds

Berestetskiy

2023

Plants

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Weeds are a permanent component of anthropogenic ecosystems. They require strict control to avoid the accumulation of their long-lasting seeds in the soil. With high crop infestation, many elements of crop production technologies (fertilization, productive varieties, growth stimulators, etc.) turn out to be practically meaningless due to high yield losses. Intensive use of chemical herbicides (CHs) has led to undesirable consequences: contamination of soil and wastewater, accumulation of their residues in the crop, and the emergence of CH-resistant populations of weeds. In this regard, the development of environmentally friendly CHs with new mechanisms of action is relevant. The natural phytotoxins of plant or microbial origin may be explored directly in herbicidal formulations (biorational CHs) or indirectly as scaffolds for nature-derived CHs. This review considers (1) the main current trends in the development of CHs that may be important for the enhancement of biorational herbicides; (2) the advances in the development and practical application of natural compounds for weed control; (3) the use of phytotoxins as prototypes of synthetic herbicides. Some modern approaches, such as computational methods of virtual screening and design of herbicidal molecules, development of modern formulations, and determination of molecular targets, are stressed as crucial to make the exploration of natural compounds more effective.

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“…Microbial pesticides of toxic action, crude extracts of plant or microbial origin, formulations of individual natural compounds (or their mixtures) may be considered as BCHs [118,119] (Figure 1). The search of potential AIs for BCHs is typically based on chemical ecology approach: plants can produce phytotoxic metabolites to compete with other species while microorganisms can employ them for plant colonization [120][121][122][123]. Some examples of phytotoxins, which will be discussed below, are presented in Figure 3.…”

Section: Promising and Commercialized Natural Compoundsmentioning

confidence: 99%

Modern Approaches for the Development of New Herbicides Based on Natural Compounds

Berestetskiy¹

2022

Preprint

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Weeds are a permanent component of anthropogenic ecosystems, which requires strict control to avoid the accumulation of their long–lasting seeds in the soil. With high crop infestation, many elements of crop production technologies (fertilization, productive varieties, growth stimulators, etc.) turn out to be practically meaningless due to high yield losses. Intensive use of chemical herbicides (CH) has led to undesirable consequences: contamination of soil and wastewater, accumulation of their residues in the crop, the emergence of CH-resistant populations of weeds. In this regard, the development of environmentally friendly CH with new mechanisms of action is relevant. Natural phytotoxins of plant or microbial origin may be directly explored in herbicidal formulations (biorational CH) or indirectly as scaffolds for nature-derived CH. This review considers: 1) the main current trends in the development of CH that may be important for enhancement of biorational herbicides; 2) advances in the development and practical application of natural compounds for weed control; 3) the use of phytotoxins as prototypes of synthetic herbicides. Some modern approaches such as computational methods of virtual screening and design herbicidal molecules, development of modern formulations, determination of molecular targets are stressed as important to make exploration of natural compounds more effective.

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Lichen allelopathy: a new hope for limiting chemical herbicide and pesticide use

Cited by 11 publications

References 106 publications

Spatial heterogeneity of <i>Cladonia rangiformis</i> and <i>Erica</i> spp. induces variable effects on soil microbial communities which are most robust in bare-soil microhabitats

Spatial heterogeneity of <i>Cladonia rangiformis</i> and <i>Erica</i> spp. induces variable effects on soil microbial communities which are most robust in bare-soil microhabitats

Modern Approaches for the Development of New Herbicides Based on Natural Compounds

Modern Approaches for the Development of New Herbicides Based on Natural Compounds

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Lichen allelopathy: a new hope for limiting chemical herbicide and pesticide use

Cited by 11 publications

References 106 publications

Spatial heterogeneity of &lt;i&gt;Cladonia rangiformis&lt;/i&gt; and &lt;i&gt;Erica&lt;/i&gt; spp. induces variable effects on soil microbial communities which are most robust in bare-soil microhabitats

Spatial heterogeneity of &lt;i&gt;Cladonia rangiformis&lt;/i&gt; and &lt;i&gt;Erica&lt;/i&gt; spp. induces variable effects on soil microbial communities which are most robust in bare-soil microhabitats

Modern Approaches for the Development of New Herbicides Based on Natural Compounds

Modern Approaches for the Development of New Herbicides Based on Natural Compounds

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Spatial heterogeneity of <i>Cladonia rangiformis</i> and <i>Erica</i> spp. induces variable effects on soil microbial communities which are most robust in bare-soil microhabitats

Spatial heterogeneity of <i>Cladonia rangiformis</i> and <i>Erica</i> spp. induces variable effects on soil microbial communities which are most robust in bare-soil microhabitats