Relative potency of culture supernatants of Xenorhabdus and Photorhabdus spp. on growth of some fungal phytopathogens

Hazır, Selçuk; Shapiro‐Ilan, David I.; Bock, Clive H.; Hazir, Canan; Leite, Luis Garrigós; Hotchkiss, Michael W.

doi:10.1007/s10658-016-0923-9

Cited by 64 publications

(89 citation statements)

References 23 publications

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“…Isolated and multiplied in aqueous media, Acromyrmex subterraneus were reported susceptible to the entomopathogenic bacterium Photorhabdus temperate K122, highly virulent when inoculated in worker abdomens [41]. Fungicide metabolites produced in the cultivation media (supernatant) have been used to control phytopathogenic fungi in field applications [42]; therefore, leaf-cutter ant control can be performed by targeting the symbiont fungus. The use of endophytic bacteria to overcome the morphological, mechanical and biochemical defenses of leaf-cutter ants aiming to contaminate the symbiont fungus [43], as well as the use of endophytic fungi [44], has been regarded as promising research lines; however, the assumptions are still hypothetical.…”

Section: Other Entomopathogenic Microorganismsmentioning

confidence: 99%

Leaf-Cutter Ants and Microbial Control

Travaglini¹,

Vieira²,

AndréArnosti³

et al. 2018

The Complex World of Ants

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The attini tribe comprises fungusgrowing ants, such as the basal Apterostigma and other more specialized genera, including the higher attine and the ones that cut the fresh plant tissue (Atta and Acromyrmex), maintaining an obligatory mutualistic relation with the fungus Leucoagaricus gongylophorus, which serves as a food source for the ants. Leaf-cutter ants are considered agriculture pests and populate the soil, a rich environment, especially due to the presence of several microorganisms. Some of these microorganisms are natural enemies that may cause epizootics (quickly spreading opportunistic diseases). Such defence strategies include polyethism, that is, division of labor among the individuals. The older ants take on the responsibility of foraging, as their integument is harder and heavily sclerotized, serving as a protective barrier against pathogens (including bacteria and antagonistic fungi). The younger ants, whose metapleural glands synthetize important secretions to eliminate and control microorganisms that could attack the colony fungus garden and the immature (larvae and pupae), remain inside the colony cultivating symbiont fungi. The sum of the survival strategies of ants in general, including social immunity and nest-cleaning behavior, represents a barrier for the application of biological control programs, mainly microbial ones.

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Section: Other Entomopathogenic Microorganismsmentioning

confidence: 99%

Leaf-Cutter Ants and Microbial Control

Travaglini¹,

Vieira²,

AndréArnosti³

et al. 2018

The Complex World of Ants

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show abstract

“…Similarly, San-Blas et al (2012) reported strong antifungal effects of metabolites from Venezuelan strains of Photorhabdus, against the causative agent of the cacao frosty pod rot disease, Moniliophthora roreri. In another study, Hazir et al (2016) evaluated the potency of cellfree supernatants of three Photorhabdus strains, Photorhabdus temperata, P. luminescens (VS) and P. luminescens (K122) against several plant pathogenic fungi. Their results demonstrated that these cell-free culture filtrates can inhibit the vegetative growth of a variety of economically important phytopathogenic fungi, including Fusicladium carpophilum (peach scab), F. effusum (pecan scab), M. fructicola (brown rot), G. cingulata (anthracnose), and Armillaria tabescens (root rot).…”

Section: Antimycotic Effectsmentioning

confidence: 99%

Secondary Metabolites Produced by Heterorhabditis Symbionts and Their Application in Agriculture: What We Know and What to Do Next

Stock

Kusakabe

Orozco

2017

Journal of Nematology

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Gram-negative Photorhabdus bacteria have a dual lifestyle: they are mutualists of Heterorhabditis nematodes and are pathogens of insects. Together, this nematode-bacterium partnership has been used to successfully control a wide range of agricultural insect pests. Photorhabdus produce a diverse array of small molecules that play key biological roles in regulating their dual roles. In particular, several secondary metabolites (SM) produced by this bacterium are known to play a critical role in the maintenance of a monoxenic infection in the insect host and are also known to prevent contamination of the cadaver from soil microbes and/or predation by arthropods. A few of the SM this bacteria produce have been isolated and identified, and their biological activities have also been tested in laboratory assays. Over the past two decades, analyses of the genomes of several Photorhabdus spp. have revealed the presence of SM numerous gene clusters that comprise more than 6% of these bacteria genomes. Furthermore, genome mining and characterization of biosynthetic pathways, have uncovered the richness of these compounds, which are predicted to vary across different Photorhabdus spp. and strains. Although progress has been made in the identification and function of SM genes and gene clusters, the targeted testing for the bioactivity of molecules has been scarce or mostly focused on medical applications. In this review, we summarize the current knowledge of Photorhabdus SM, emphasizing on their activity against plant pathogens and parasites. We further discuss their potential in the management of agricultural pests and the steps that need to be taken for the implementation of Photorhabdus SM in pest management.

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“…Supernatant içerisinde bakteri olma ihtimaline karşı 0.22 µm (Thermo scientific, NY) çaplı filtreden geçirilmiştir [13]. Kullanılacak süpernatantlar en fazla 2 hafta bekletilmiştir ve deneylere kadar 4 °C'de muhafaza edilmiştir [20][21][22][23][24] Çalışmada kullanılan TCA Sigma firması tarafından üretilmiş ve en az %98 saflığa sahiptir. TCA doğrudan suda çözünen bir madde değildir.…”

Section: Introductionunclassified

Trans-Cinnamik Asit ve Xenorhabdus szentirmaii Metabolitlerinin Bitki Patojeni Fungus Botrytis cinerea Mücadelesinde Kullanımı

Adliğ

Gülcü

2019

Düzce Üniversitesi Bilim Ve Teknoloji Dergisi

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Bu çalışmada Xenorhabdus szentirmaii bakteri supernatantı ile Photorhabdus luminescens bakteri metaboliti olan transcinnamik asit(TCA)'in çilek, marul gibi bitkilerde patojen Botrytis cinerea fungusuna karşı etkinliği test edilmiştir. Petri deneylerinde B. cinerea'ya karşı TCA ve X. szentirmaii'nin farklı konsantrasyonları uygulanmıştır. Petri deneylerindeki sonuçlara göre (%2)'lik TCA ve sentetik bir fungusit in vivo koşullarda kombine edilmiştir. Çalışmanın petri deneylerinde, TCA X. szentirmaii'ye göre daha fazla inhibisyon meydana getirmiştir. Fungusun gelişimini en fazla inhibe eden X. szentirmaii ise %10'luk konsantrasyonudur. Saksı deneylerinde, fungusitin farklı konsantrasyonları ile TCA (%2) kombine edilerek marul fidelerine uygulanmıştır. Sonuç olarak TCA en az fungusit kadar B. cinerea'ya etkili bulunmuştur. Buna ek olarak TCA ve sentetik fungusit arasında yalnızca antagonistik bir ilişki gözlenmiştir.

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Relative potency of culture supernatants of Xenorhabdus and Photorhabdus spp. on growth of some fungal phytopathogens

Cited by 64 publications

References 23 publications

Leaf-Cutter Ants and Microbial Control

Leaf-Cutter Ants and Microbial Control

Secondary Metabolites Produced by Heterorhabditis Symbionts and Their Application in Agriculture: What We Know and What to Do Next

Trans-Cinnamik Asit ve Xenorhabdus szentirmaii Metabolitlerinin Bitki Patojeni Fungus Botrytis cinerea Mücadelesinde Kullanımı

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