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红树林内生真菌1403是从中国南海分离的一株镰刀菌,在液体发酵条件下能够产生灰黄霉素和葸醌类的抗生素。基于1403在形态学方面具有以下特征:产小型分生孢子的分生孢子梗较长,小型分生孢子呈椭圆形,大型分生孢子线形或略微弯曲,本文将它与有类似形态特征的镰刀菌进行了比较,发现1403与植物病原菌Fusarium verticillioides(有性态为Gibberella moniliforme)表面上很相似,气生菌丝均可产生大量假头状或链状的小型分生孢子,但深入的研究却发现1403与F.verticillioides具有不同的性状,如产生的多生分生孢子梗有时与单生分生孢子梗长度相当,产生环状菌丝,以及菌丝发生融合等现象,进一步以最大简约法和贝叶斯分析法将1403与其它相似镰刀菌进行系统发育比较,综合18S、28S、ITS三水平上的分析结果可以将1403归于镰刀菌亚组Gibberella fujikuroi,并最终在EF—1α水平上将其定为Fusarium proliferatum.
Mangrove Endophytic Fungus 1403, a Fusarium isolate from the South China Sea, is capable of producing griseofulvin and acenaphthene quinolones under liquid fermentation conditions. Based on the 1403 morphology has the following characteristics: Conidiophores producing small conidia longer, small conidia oval, large conidia linear or slightly curved, this article it with similar morphological characteristics sickle The results showed that 1403 was similar to Fusarium verticillioides (Gibbrella moniliforme) on the surface of the plant, and many hyphae or chain conidia could be produced by aerial mycelium. However, Found 1403 and F.verticillioides have different traits, such as the production of polygamous spores and sometimes single spore length of conidiophores, resulting in circular mycelium, and hyphae fusion phenomenon, and further to the maximum parsimony And Bayesian analysis of 1403 with other similar Fusarium phylogenetic analysis, integrated 18S, 28S, ITS three levels of analysis results can be attributed to the 1403 Fusarium subgroup Gibberella fujikuroi, and ultimately EF-1α level It is set to Fusarium proliferatum.