Bacteria can mobilize nematode-trapping fungi to kill nematodes
Wang, Xin1; Li, Guo-Hong1; Zou, Cheng-Gang1; Ji, Xing-Lai1; Liu, Tong1; Zhao, Pei-Ji2; Liang, Lian-Ming1; Xu, Jian-Ping1,3; An, Zhi-Qiang4; Zheng, Xi1; Qin, Yue-Ke1; Tian, Meng-Qing1; Xu, You-Yao1; Ma, Yi-Cheng1; Yu, Ze-Fen1; Huang, Xiao-Wei1; Liu, Shu-Qun1; Niu, Xue-Mei1; Yang, Jin-Kui1; Huang, Ying1; Zhang, Ke-Qin1

In their natural habitat, bacteria are consumed by bacterivorous nematodes; however, they are not simply passive preys. Here we report a defensive mechanism used by certain bacteria to mobilize nematode-trapping fungi to kill nematodes. These bacteria release urea, which triggers a lifestyle switch in the fungus Arthrobotrys oligospora from saprophytic to nematodepredatory form; this predacious form is characterized by formation of specialized cellular structures or 'traps'. The bacteria significantly promote the elimination of nematodes by A. oligospora. Disruption of genes involved in urea transport and metabolism in A. oligospora abolishes the urea-induced trap formation. Furthermore, the urea metabolite ammonia functions as a signal molecule in the fungus to initiate the lifestyle switch to form trap structures. Our findings highlight the importance of multiple predator-prey interactions in prey defense mechanisms.

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WOS IDWOS:000347613000006
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Affiliation1.Yunnan Univ, Lab Conservat & Utilizat Bioresources, Kunming 650091, Yunnan, Peoples R China
2.Chinese Acad Sci, Kunming Inst Bot, State Key Lab Phytochem & Plant Resources West Ch, Kunming 650201, Yunnan, Peoples R China
3.McMaster Univ, Dept Biol, Hamilton, ON L8S 4K1, Canada
4.Univ Texas Hlth Sci Ctr Houston, Brown Fdn Inst Mol Med, Texas Therapeut Inst, Houston, TX 77030 USA
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Wang, Xin,Li, Guo-Hong,Zou, Cheng-Gang,et al. Bacteria can mobilize nematode-trapping fungi to kill nematodes[J]. NATURE COMMUNICATIONS,2014,5(1):1.
APA Wang, Xin.,Li, Guo-Hong.,Zou, Cheng-Gang.,Ji, Xing-Lai.,Liu, Tong.,...&Zhang, Ke-Qin.(2014).Bacteria can mobilize nematode-trapping fungi to kill nematodes.NATURE COMMUNICATIONS,5(1),1.
MLA Wang, Xin,et al."Bacteria can mobilize nematode-trapping fungi to kill nematodes".NATURE COMMUNICATIONS 5.1(2014):1.
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