The Interaction between Rhabditis sp. and Meloidogyne Incognita, Pratylenchus Coffeae on Banana

腐生性線蟲Rhabditis sp.與南方根瘤線蟲及南方根腐線蟲在香蕉上的交互作用

M. H. Chien ； T. T. Tsay ； P. C. Chen

《植物病理學會刊》 23卷2期 (2014/06) Pp. 99-108

https://doi.org/10.6649/PPB.201406_23(2).0002

摘要

本研究利用自田間分離而得之腐生性線蟲（Rahabditis sp.）和兩種植物寄生性線蟲共同接種植 物以研究它與寄生性線蟲之間的交互作用。化學誘引試驗結果顯示腐生性線蟲會受到南方根瘤線蟲（Meloidogyne incognita）的母蟲及其卵塊吸引，也會被南方根腐線蟲（Pratylenchus coffeae）取食後的壞疽根組織吸引。試驗中只要是一併接種腐生性線蟲及植物寄生性線蟲的處理組，無論兩者的接種順序為何，都會致使植物寄生性線蟲的族群量比單獨存在於寄主上時少。若是腐生性線蟲先接種至植株上，這種對植物寄生性線蟲族群量負面的影響會更明顯。本研究結果顯示這些取食細菌的腐生性線蟲可能會改變根系周圍或植物寄生性線蟲取食點附近的微生物相，進而影響根瘤線蟲與根腐線蟲土中的族群量與其取食寄主的行為。

關鍵字

交互作用 ； 南方根瘤線蟲 ； 南方根腐線蟲 ； 腐生性線蟲

並列摘要

The free-living nematodes Rhabditis sp. were isolated from the field and to study its interaction with two plant parasitic nematodes (PPN). In the chemotaxis experiments, results showed that Rhabditis sp. were attracted by Meloidogyne incognita females and their egg masses, as well as the root lesions caused by Pratylenchus coffeae. Regardless of the inoculation orders, the numbers of PPN in the treatments that also had Rhabditis sp. usually were lower than the treatments that had PPN only. This phenomenon was more prominent when Rhabditis sp. were added before PPN inoculation. Our results also indicated that the behavior of bacteria-feeding Rhabditis sp. might change the microfauna around the rhizosphere or the PPN feeding sites, in consequence affecting the population and parasitizing activity of the root-knot and root-lesion nematodes.

並列關鍵字

interaction ； Meloidogyne incognita ； Pratylenchus coffeae ； Rhabditis sp.