Plants transfer lipids to sustain colonization by mutualistic mycorrhizal and parasitic fungi
Plants transfer lipids to sustain colonization by mutualistic mycorrhizal and parasitic fungi
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DOI：
10.1126/science.aam9970
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发表时间：
2017-06-16
期刊：
影响因子：
56.9
通讯作者：
Wang, Ertao
中科院分区：
文献类型：
--
作者：
Jiang, Yina;Wang, Wanxiao;Wang, Ertao
丛枝菌根（AM）真菌促进植物吸收矿质营养和从植物中吸取有机营养。有机营养素被认为主要以糖的形式提供。在这里，我们表明，AM真菌Rhizophagus irregularis是一个脂肪酸营养缺陷型和宿主植物中合成的脂肪酸转移到真菌，以维持菌根定殖。这种转移依赖于RAM2（为丛枝菌根化2所需）和ATP结合盒转运蛋白介导的植物脂质输出途径。我们进一步表明，植物脂肪酸可以转移到病原真菌Golovinomyces cichoracerum和所需的病原体定殖。我们认为，互惠菌根和病原真菌同样招募脂肪酸生物合成程序，以促进主机入侵。
Arbuscular mycorrhizal (AM) fungi facilitate plant uptake of mineral nutrients and draw organic nutrients fromthe plant. Organic nutrients are thought to be supplied primarily in the form of sugars. Here we show that the AM fungus Rhizophagus irregularis is a fatty acid auxotroph and that fatty acids synthesized in the host plants are transferred to the fungus to sustain mycorrhizal colonization. The transfer is dependent onRAM2 (REQUIRED FOR ARBUSCULAR MYCORRHIZATION 2) and the ATP binding cassette transporter-mediated plant lipid export pathway. We further show that plant fatty acids can be transferred to the pathogenic fungus Golovinomyces cichoracerum and are required for colonization by pathogens. We suggest that the mutualistic mycorrhizal and pathogenic fungi similarly recruit the fatty acid biosynthesis program to facilitate host invasion.