The cyclic lipopeptide orfamide induces systemic resistance in rice to Cochliobolus miyabeanus but not to Magnaporthe oryzae

Ma, Zongwang; Ongena, Marc; Höfte, Monica

doi:10.1007/s00299-017-2187-z

Cited by 46 publications

(53 citation statements)

References 68 publications

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“…In monocots, such as rice, Pseudomonas CLP structure is crucial in determining elicitor effect on a given pathosystem. For example, orfamide applied at 25 µM was identified as elicitor inducing resistance to Cochliobolus miyabeanus, but it is not active against Magnaporthe oryzae (Ma et al, 2017). Nevertheless, CLPs such as WLIP, lokisin, and entolysin were recently described to successfully induce resistance toward this last pathogen, confirming elicitor specificity for certain pathosystems (Omoboye et al, 2019).…”

Section: Cyclic Lipopeptidesmentioning

confidence: 99%

Elicitors of Plant Immunity Triggered by Beneficial Bacteria

Pršić

Ongena

2020

Front. Plant Sci.

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The molecular basis of plant immunity triggered by microbial pathogens is being well-characterized as a complex sequential process leading to the activation of defense responses at the infection site, but which may also be systemically expressed in all organs, a phenomenon also known as systemic acquired resistance (SAR). Some plant-associated and beneficial bacteria are also able to stimulate their host to mount defenses against pathogen ingress via the phenotypically similar, induced systemic resistance phenomenon. Induced systemic resistance resembles SAR considering its mechanistic principle as it successively involves recognition at the plant cell surface, stimulation of early cellular immune-related events, systemic signaling via a fine-tuned hormonal cross-talk and activation of defense mechanisms. It thus represents an indirect but efficient mechanism by which beneficial bacteria with biocontrol potential improve the capacity of plants to restrict pathogen invasion. However, according to our current vision, induced systemic resistance is specific considering some molecular aspects underpinning these different steps. Here we overview the chemical diversity of compounds that have been identified as induced systemic resistance elicitors and thereby illustrating the diversity of plants species that are responsive as well as the range of pathogens that can be controlled via this phenomenon. We also point out the need for further investigations allowing better understanding how these elicitors are sensed by the host and the diversity and nature of the stimulated defense mechanisms.

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Section: Cyclic Lipopeptidesmentioning

confidence: 99%

Elicitors of Plant Immunity Triggered by Beneficial Bacteria

Pršić

Ongena

2020

Front. Plant Sci.

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“…CMR12a produces two classes of CLPs, namely orfamides and sessilins, that stimulate defence responses in rice and consequently activate ISR against diverse plant pathogens such as M. oryzae and C. miyabeanus in a differential, concentration-dependent manner. 178,179 The LPs produced by members of the Pseudomonas and Bacillus genera are structurally and functionally highly diverse, 165 further corroborated by the extensive genomic variability at the relevant BGCs. 171,180 3.…”

Section: Stimulatory Compoundsmentioning

confidence: 94%

Microbial small molecules – weapons of plant subversion

et al. 2018

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Covering: up to 2018 Plants live in close association with a myriad of microbes that are generally harmless. However, the minority of microbes that are pathogens can severely impact crop quality and yield, thereby endangering food security. By contrast, beneficial microbes provide plants with important services, such as enhanced nutrient uptake and protection against pests and diseases. Like pathogens, beneficial microbes can modulate host immunity to efficiently colonize the nutrient-rich niches within and around the roots and aerial tissues of a plant, a phenomenon mirroring the establishment of commensal microbes in the human gut. Numerous ingenious mechanisms have been described by which pathogenic and beneficial microbes in the plant microbiome communicate with their host, including the delivery of immune-suppressive effector proteins and the production of phytohormones, toxins and other bioactive molecules. Plants signal to their associated microbes via exudation of photosynthetically fixed carbon sources, quorum-sensing mimicry molecules and selective secondary metabolites such as strigolactones and flavonoids. Molecular communication thus forms an integral part of the establishment of both beneficial and pathogenic plant-microbe relations. Here, we review the current knowledge on microbe-derived small molecules that can act as signalling compounds to stimulate plant growth and health by beneficial microbes on the one hand, but also as weapons for plant invasion by pathogens on the other. As an exemplary case, we used comparative genomics to assess the small molecule biosynthetic capabilities of the Pseudomonas genus; a genus rich in both plant pathogenic and beneficial microbes. We highlight the biosynthetic potential of individual microbial genomes and the population at large, providing evidence for the hypothesis that the distinction between detrimental and beneficial microbes is increasingly fading. Knowledge on the biosynthesis and molecular activity of microbial small molecules will aid in the development of successful biological agents boosting crop resiliency in a sustainable manner and could also provide scientific routes to pathogen inhibition or eradication.

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“…Enhanced resistance has been reported againstgrey leaf spot disease caused by Magnaporthe oryzae due to H 2 O 2 -mediated defense responses sensitized by ISR responses elicited by semi-purified surfactin lipopeptides in perennial ryegrass [195]. The Pseudomonas-derived cyclic lipopeptide orfamide was shown to act as an ISR elicitor, triggering early defense events and inducing expression of defence related genes without causing cell death in rice against the brown spot disease fungus Cochliobolus miyabeanus [196]. Endophytic bacteria showed antifungal activity, which played an important role indefending plants against invading fungal pathogens.…”

Section: Lipopeptides Isr-inducer In Plantsmentioning

confidence: 99%

Lesson from Ecotoxicity: Revisiting the Microbial Lipopeptides for the Management of Emerging Diseases for Crop Protection

Malviya

Sahu

Singh

et al. 2020

IJERPH

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Microorganisms area treasure in terms of theproduction of various bioactive compounds which are being explored in different arenas of applied sciences. In agriculture, microbes and their bioactive compounds are being utilized in growth promotion and health promotion withnutrient fortification and its acquisition. Exhaustive explorations are unraveling the vast diversity of microbialcompounds with their potential usage in solving multiferous problems incrop production. Lipopeptides are one of such microbial compounds which havestrong antimicrobial properties against different plant pathogens. These compounds are reported to be produced by bacteria, cyanobacteria, fungi, and few other microorganisms; however, genus Bacillus alone produces a majority of diverse lipopeptides. Lipopeptides are low molecular weight compounds which havemultiple industrial roles apart from being usedas biosurfactants and antimicrobials. In plant protection, lipopeptides have wide prospects owing totheirpore-forming ability in pathogens, siderophore activity, biofilm inhibition, and dislodging activity, preventing colonization bypathogens, antiviral activity, etc. Microbes with lipopeptides that haveall these actions are good biocontrol agents. Exploring these antimicrobial compounds could widen the vistasof biological pest control for existing and emerging plant pathogens. The broader diversity and strong antimicrobial behavior of lipopeptides could be a boon for dealing withcomplex pathosystems and controlling diseases of greater economic importance. Understanding which and how these compounds modulate the synthesis and production of defense-related biomolecules in the plants is a key question—the answer of whichneeds in-depth investigation. The present reviewprovides a comprehensive picture of important lipopeptides produced by plant microbiome, their isolation, characterization, mechanisms of disease control, behavior against phytopathogens to understand different aspects of antagonism, and potential prospects for future explorations as antimicrobial agents. Understanding and exploring the antimicrobial lipopeptides from bacteria and fungi could also open upan entire new arena of biopesticides for effective control of devastating plant diseases.

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The cyclic lipopeptide orfamide induces systemic resistance in rice to Cochliobolus miyabeanus but not to Magnaporthe oryzae

Cited by 46 publications

References 68 publications

Elicitors of Plant Immunity Triggered by Beneficial Bacteria

Elicitors of Plant Immunity Triggered by Beneficial Bacteria

Microbial small molecules – weapons of plant subversion

Lesson from Ecotoxicity: Revisiting the Microbial Lipopeptides for the Management of Emerging Diseases for Crop Protection

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