&lt;i&gt;Burkholderia&lt;/i&gt; Gut Symbionts Associated with European and Japanese Populations of the Dock Bug &lt;i&gt;Coreus marginatus&lt;/i&gt; (Coreoidea: Coreidae)

Ohbayashi, Tsubasa; Itoh, Hideomi; Lachat, Joy; Kikuchi, Yoshitomo; Mergaert, Peter

doi:10.1264/jsme2.me19011

Cited by 27 publications

(30 citation statements)

References 30 publications

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“…In Heteropterans, another important question that needs to be clarified is how often symbiont associations are either facultative or obligatory. In our meta‐analysis, 16 studies were not included because symbiont removal led to 100% egg‐to‐adult mortality (e.g., Ohbayashi et al, 2019), suggesting that many of these symbionts are obligatory, even if in many taxa a recent and ongoing process of symbiont acquisition and loss is also likely. For both whiteflies and heteropterans, the lack of evidence for symbiont costs may also be a result of just not measuring the traits for which there would be such a cost, or not measuring these under the right ecological conditions (Kikuchi et al, 2012).…”

Section: Discussionmentioning

confidence: 99%

Benefits and costs of hosting facultative symbionts in plant‐sucking insects: A meta‐analysis

2021

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Animal associations with microbes are widespread across the natural world and can play key roles in the biology of their hosts.Thanks to important innovations in molecular techniques, the last two decades have provided deep insights into these diverse and often intricate host-microbe interactions (McFall-Ngai et al., 2013). Insects are the most abundant group of species in terrestrial systems and have evolved symbiotic associations with various microbes (Brownlie & Johnson, 2009;Feldhaar, 2011;Frago et al., 2020). Herbivorous insects in particular host complex communities of bacteria and fungi in their guts that enable them to feed on low-quality and toxin-laden leaf material (Dillon & Dillon, 2004;Hammer & Bowers, 2015). Many insects acquire beneficial symbionts from their surroundings each generation (Kikuchi et al., 2011), while others host more permanent endosymbionts within specialised insect cells, which are transferred vertically from mother to offspring (Douglas, 1998). Plant-sucking insects feed on impoverished diets, and have co-evolved with specialised bacteria that synthesise essential nutrients they cannot acquire directly from the plant (Bennett & Moran, 2015). Over time, this coevolution can lead to genomic erosion resulting in an obligate

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Section: Discussionmentioning

confidence: 99%

Benefits and costs of hosting facultative symbionts in plant‐sucking insects: A meta‐analysis

2021

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“…In addition to the bean bug, other heteropteran species of the superfamilies Coreoidea and Lygaeoidea and the family Largidae are commonly associated with Burkholderia in the midgut crypts. Although the bean bug and most members of the Coreoidea and Lygaeoidea are exclusively associated with SBE Burkholderia (32), some species are associated mainly with SBE but to a lesser extend also with PBE and even with BCC&P (46)(47)(48)(49)(50). In addition, members of the Largidae harbor a specific group of PBE Burkholderia (51, 52).…”

Section: Sbe Burkholderia Always Outcompete Pbe and Pandoraea In The Gutmentioning

confidence: 99%

Host–symbiont specificity determined by microbe–microbe competition in an insect gut

Itoh

Jang

Takeshita

et al. 2019

Proc. Natl. Acad. Sci. U.S.A.

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112

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Despite the omnipresence of specific host–symbiont associations with acquisition of the microbial symbiont from the environment, little is known about how the specificity of the interaction evolved and is maintained. The bean bug Riptortus pedestris acquires a specific bacterial symbiont of the genus Burkholderia from environmental soil and harbors it in midgut crypts. The genus Burkholderia consists of over 100 species, showing ecologically diverse lifestyles, and including serious human pathogens, plant pathogens, and nodule-forming plant mutualists, as well as insect mutualists. Through infection tests of 34 Burkholderia species and 18 taxonomically diverse bacterial species, we demonstrate here that nonsymbiotic Burkholderia and even its outgroup Pandoraea could stably colonize the gut symbiotic organ and provide beneficial effects to the bean bug when inoculated on aposymbiotic hosts. However, coinoculation revealed that the native symbiont always outcompeted the nonnative bacteria inside the gut symbiotic organ, explaining the predominance of the native Burkholderia symbiont in natural bean bug populations. Hence, the abilities for colonization and cooperation, usually thought of as specific traits of mutualists, are not unique to the native Burkholderia symbiont but, to the contrary, competitiveness inside the gut is a derived trait of the native symbiont lineage only and was thus critical in the evolution of the insect gut symbiont.

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“…Several phytophagous stink bugs have developed crypt-bearing symbiotic organs in their midgut that densely harbor gut symbiotic bacteria [ 3 , 10 , 11 , 12 , 13 ]. The bean bug Riptortus pedestris (superfamily Coreoidea; family Alydidae), which is the most intensively and comprehensively investigated species among stink bugs, hosts a culturable symbiont, Burkholderia insecticola (class Betaproteobacteria) in the lumen of their midgut crypts [ 11 , 14 , 15 ].…”

Section: Introductionmentioning

confidence: 99%

Genomic Comparison of Insect Gut Symbionts from Divergent Burkholderia Subclades

Takeshita

Kikuchi

2020

Genes

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Stink bugs of the superfamilies Coreoidea and Lygaeoidea establish gut symbioses with environmentally acquired bacteria of the genus Burkholderia sensu lato. In the genus Burkholderia, the stink bug-associated strains form a monophyletic clade, named stink bug-associated beneficial and environmental (SBE) clade (or Caballeronia). Recently, we revealed that members of the family Largidae of the superfamily Pyrrhocoroidea are associated with Burkholderia but not specifically with the SBE Burkholderia; largid bugs harbor symbionts that belong to a clade of plant-associated group of Burkholderia, called plant-associated beneficial and environmental (PBE) clade (or Paraburkholderia). To understand the genomic features of Burkholderia symbionts of stink bugs, we isolated two symbiotic Burkholderia strains from a bordered plant bug Physopellta gutta (Pyrrhocoroidea: Largidae) and determined their complete genomes. The genome sizes of the insect-associated PBE (iPBE) are 9.5 Mb and 11.2 Mb, both of which are larger than the genomes of the SBE Burkholderia symbionts. A whole-genome comparison between two iPBE symbionts and three SBE symbionts highlighted that all previously reported symbiosis factors are shared and that 282 genes are specifically conserved in the five stink bug symbionts, over one-third of which have unknown function. Among the symbiont-specific genes, about 40 genes formed a cluster in all five symbionts; this suggests a “symbiotic island” in the genome of stink bug-associated Burkholderia.

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<i>Burkholderia</i> Gut Symbionts Associated with European and Japanese Populations of the Dock Bug <i>Coreus marginatus</i> (Coreoidea: Coreidae)

Cited by 27 publications

References 30 publications

Benefits and costs of hosting facultative symbionts in plant‐sucking insects: A meta‐analysis

Benefits and costs of hosting facultative symbionts in plant‐sucking insects: A meta‐analysis

Host–symbiont specificity determined by microbe–microbe competition in an insect gut

Genomic Comparison of Insect Gut Symbionts from Divergent Burkholderia Subclades

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