| 分离自蔬菜地的腐霉一新种及其rDNA ITS序列分析 |
| A new Pythium species isolated from vegetable fields and analysis by rDNA ITS sequence |
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| 中文关键词:腐霉属，新种，藏卵器，雄器，卵孢子，分子系统发育树 |
| 英文关键词:Pythium, new species, oogonium, antheridium, oospore, molecularly phylogenetic tree |
| 基金项目:National Natural Science Foundation of China (No. 30670012), National Undergraduate Innovation Plan (No. 081059304) and the Natural Science Foundation of Guangxi (No. 0640013) |
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| 摘要点击次数: 1990 |
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| 中文摘要: |
| 从广西南宁收集的蔬菜地土壤样本中，分离得到一个新的腐霉种，命名为广西腐霉Pythium guangxiense。不同于其近似种，广西腐霉的孢子囊球形或亚球形；藏卵器球形、亚球形、椭圆形或囊形；雄器同丝生或异丝生，柄常分枝且缠绕藏卵器。对构成广西腐霉rDNA ITS区段的772个碱基进行扩增和测序。在根据ITS序列建立的分子系统发育树中，广西腐霉与禾生腐霉Pythium graminicola、周雄腐霉P. periilum和肿囊腐霉P. inflatum等产生瓣状孢子囊的腐霉种关系密切。对广西腐霉进行了分类描述和其与近似种的比较。 |
| 英文摘要: |
| Pythium guangxiense sp. nov., isolated from vegetable fields in Nanning, Guangxi, China, was described as a new species. It was distinguished from other similar species by the presence of spherical or subspherical sporangia, spherical, subspherical, oval or sac-like oogonia and the monoclinous and diclinous antheridia with often branched stalks twining round the oogonia. The ITS region of rDNA consisted of 772 bases was amplified and sequenced. This new species was closely related to the members producing filamentous inflated sporangia such as Pythium graminicola, P. periilum and P. inflatum on a phylogenetic tree established based on ITS sequences. Taxonomic description and comparison with relative species were made. |
| 龙艳艳,韦继光,黄翠流,何月秋,袁高庆,石雨,熊英. 分离自蔬菜地的腐霉一新种及其rDNA ITS序列分析[J]. 菌物学报, 2010, 29(6): 795-800 |
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