The social amoeba Dictyostelium discoideum rescues Paraburkholderia hayleyella , but not P. agricolaris , from interspecific competition
The social amoeba Dictyostelium discoideum rescues Paraburkholderia hayleyella , but not P. agricolaris , from interspecific competition
复制标题
社会性阿米巴盘基网柄菌从种间竞争中拯救了Paraburkholderia hayleyella，但不能拯救P. agricolaris。
DOI：
10.1093/femsec/fiad055
复制
发表时间：
2023
影响因子：
4.2
通讯作者：
Garcia, Justine R.
中科院分区：
文献类型：
--
作者：
Medina, James M.;Queller, David C.;Strassmann, Joan E.;Garcia, Justine R.
细菌内共生体可以为它们的真核宿主提供益处，但通常不清楚内共生体是否从这些关系中受益。社会性阿米巴Dictyosteelicdiscoideum与三种Paraburkholderia内共生体，包括P. agricolecular和P.海氏菌属这些内共生体对宿主来说可能是昂贵的，但在某些情况下是有益的，因为它们允许。discoideum通过传播阶段携带猎物细菌。在没有其他物种存在的实验中，P. hayleyellabenefits from D. discoideum while P.农业不。然而，其他物种的存在可能会影响这种共生关系。我们测试了ifP。agricolecular和P. hayleyelabenefit from D. discoideum在资源竞争的背景下与肺炎克雷伯氏菌，典型的实验室猎物的D。盘状突没有D。discoideum，K. pneumoniae抑制了两种Paraburkholderiasybions的生长，与竞争作用一致，种间竞争对海氏拟沙蚕的危害大于对黑氏拟沙蚕的危害。农家菜我们发现P。Hayleyella被D. discoideum，而P.农业不是。这可能是因为P。hayleyellae是一种内共生体，与P.农杆菌，可能已经失去了与宿主外资源竞争相关的基因。
Bacterial endosymbionts can provide benefits for their eukaryotic hosts, but it is often unclear if endosymbionts benefit from these relationships. The social amoebaDictyostelium discoideumassociates with three species ofParaburkholderiaendosymbionts, includingP. agricolarisandP. hayleyella. These endosymbionts can be costly to the host but are beneficial in certain contexts because they allowD. discoideumto carry prey bacteria through the dispersal stage. In experiments where no other species are present,P. hayleyellabenefits fromD. discoideumwhileP. agricolarisdoes not. However, the presence of other species may influence this symbiosis. We tested ifP. agricolarisandP. hayleyellabenefit fromD. discoideumin the context of resource competition withKlebsiella pneumoniae, the typical laboratory prey ofD. discoideum. WithoutD. discoideum, K. pneumoniaedepressed the growth of bothParaburkholderiasymbionts, consistent with competition.P. hayleyellawas more harmed by interspecific competition thanP. agricolaris. We found thatP. hayleyellawas rescued from competition byD. discoideum, whileP. agricolariswas not. This may be becauseP. hayleyellais more specialized as an endosymbiont; it has a highly reduced genome compared toP. agricolarisand may have lost genes relevant for resource competition outside of its host.