Evidence for specificity to Glomus group Ab in two Asian mycoheterotrophic Burmannia species
Evidence for specificity to Glomus group Ab in two Asian mycoheterotrophic Burmannia species
复制标题
两种亚洲霉菌异养缅甸虫物种对球囊菌群 Ab 特异性的证据
DOI：
10.1111/j.1442-1984.2012.00387.x
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发表时间：
2014
影响因子：
1.4
通讯作者：
Kato M.
中科院分区：
文献类型：
--
作者：
Suetsugu K;Kawakita A;Kato M.
非光合作用的菌根植物，即所谓的菌根异养植物，长期以来一直吸引着植物学家和真菌学家的好奇心。基于真菌特异性PCR扩增的分子方法的最新进展极大地提高了对其宿主菌根真菌的鉴定。然而，对丛枝菌根形成菌异养真菌宿主的研究在亚洲仍然有限，亚洲被认为是寄生丛枝菌根(AM)的真菌异养菌多样性热点之一。因此，我们的目标是通过分子鉴定来揭示两个完全菌种异养的亚洲菌根之间的联系。小亚基核糖体DNA序列分析表明，这两个Burmannias种都与Glomus group Ab的几个不同谱系有关。由于Glomusgroup Ab真菌已被证实是非洲和南美洲各种真菌异养植物的真菌宿主，我们认为它们在全球范围内被形成AM的真菌异养植物广泛利用。
Nonphotosynthetic mycorrhizal plants, so‐called mycoheterotrophic plants, have long attracted the curiosity of botanists and mycologists. Recent advances in molecular methods based on fungal‐specific PCR amplification have dramatically enhanced the identification of their host mycorrhizal fungi. However, studies investigating the fungal hosts of arbuscular mycorrhizae‐forming mycoheterotrophs are still limited in Asia, which is known as one of the diversity hot spots of mycoheterotrophs that parasitize arbuscular mycorrhizae (AM). Therefore, we aimed to reveal the mycorrhizal associations of two Asian, fully mycoheterotrophicBurmanniaspecies by molecular identification. Sequences of the small subunit ribosomal DNA showed that bothBurmanniaspecies are associated with several distinct lineages ofGlomusgroup Ab. BecauseGlomusgroup Ab fungi have been confirmed as fungal hosts of various mycoheterotrophic plants in Africa and South America, we suggest they are widely exploited by AM‐forming mycoheterotrophs globally.