| 小麦条锈菌冬孢子发生的组织学和超微结构研究 |
| Histological and ultrastructural observation of teliospore formation in Puccinia striiformis f. sp. tritici |
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| 中文关键词:小麦条锈病，冬孢子形成，冷冻切片，超微结构 |
| 英文关键词:wheat stripe rust, teliospore formation, cryo-sectioning technique, ultrastructure |
| 基金项目:公益性（农业）行业科技专项（No. 200903035-02）；现代农业产业技术体系建设专项资金（No. CARS-3-1-11）；高等学校学科创新引智计划资助项目（No. B07049） |
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| 中文摘要: |
| 采用冷冻切片技术、光学显微镜和电子显微镜技术，系统研究了小麦条锈菌冬孢子的个体发生过程和超微结构特征。结果表明，小麦条锈菌冬孢子由排列在冬孢子堆基部的双核产孢细胞产生。在发育初期，产孢细胞一端产生突起形成冬孢子芽，随后冬孢子芽经延伸并形成隔膜，依次分化形成冬孢子原基、柄细胞和冬孢子原体。冬孢子原体经有丝分裂后产生隔膜发育形成双核双细胞冬孢子。成熟的冬孢子表面光滑，具有明显加厚的细胞壁，双核融合，原生质密度增加，富含脂肪粒和糖原类物质。在部分冬孢子堆周围还可观察到莲花状包被结构。 |
| 英文摘要: |
| The ontogeny of teliospore of Puccinia striiformis f. sp. tritici (Pst), the causal agent of wheat stripe rust, was performed and observed by cryo-sectioning technique associated with light and electron microscopies. The observation showed that Pst teliospores derivated from binucleate sporogenous cells lining the base of telia. At the early stage, a spore-bud outgrew from one end of sporogenous cells and expanded to form septum and related structures such as teliospore initial, pedicel and primary teliospore cell resulted from bud division. The primary teliospore cell developed to be a two-celled teliospore with two nuclei in each cell after completion of the primary teliospore nuclear division and subsequent development of a septum. The matured teliospores were characterized by smooth surface, thickened cell wall, nuclear fusion, cytoplasmic condensing and accumulation of lipid droplets and glycogen-like substances. A lotus-shaped peridium structure around some telia was observed in some telia of Pst during telial formation. |
| 姚娟妮,张宏昌,赵杰,韩青梅,成玉林,黄丽丽,康振生. 小麦条锈菌冬孢子发生的组织学和超微结构研究[J]. 菌物学报, 2012, 31(4): 560-566 |
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