Studies of mtDNA of Ustilago maydis ⅰ . Cloning and Gene Mapping

玉米 黑 粉 菌mtDNA的研究Ⅰ .DNA克隆和基因图谱

The Ustilago maydis was yellow-white small point and leather-like in earlier period the colony became dark brown ropiness surface and not smooth in latter period .

该 病原 菌 培养前期为黄白色、革质状，后为黑褐色、表面粘稠、不光滑。

They then compared the sequences with those of a closely related plant pathogen Ustilago maydis and a distantly related human pathogen Candida albicans which causes thrush .

然后将测序结果分别和一种亲缘相近的植物病菌 玉米 瘤 黑 粉 菌，以及一种亲缘关系较远的引起人口疮的人类病菌白假丝酵母对比。

Study on fungicide control of Ustilago maydis in Maize

玉米 瘤 黑粉病药剂防治研究

The agronomic character of maize inoculated with Ustilago maydis and controls were investigated . The results showed Ustilago maydis had great effect on plant type traits and ear traits and had the biggest effect on utility spike and yield of single strain .

对植株农艺性状的调查发现，玉米瘤 黑 粉病菌对玉米植株株型性状和穗部性状都有很大影响，其中对单株有效穗和单株产量造成的影响最大。

The effects of antibacterial agent hygromycin and Carboxin on morphology of Ustilago maydis were investigated by AFM .

通过AFM研究抑菌剂萎锈灵和潮霉素对 玉米 黑 粉 菌细胞形貌的影响。

Common smut of maize which is caused by the fungus ( Ustilago maydis ) has been one of the serious diseases in maize .

玉米 瘤 黑粉病是玉米 生产的重要病害之一。

A restriction map was constructed for mtDNA of Ustilago maydis .

本文 报道 玉米 黑 粉菌 mtDNA的限制性内切酶酶切图谱。

The result showed that the resistant clones were not originated from back mutation of sensitive cell of Ustilago maydis .

此结果表明，抗性克隆不是源于 玉米 黑 粉 菌敏感细胞的回复突变。

The construction of DNA vector and spheroplast transformation and regeneration of Ustilago maydis

玉米 黑 粉 菌DNA载体的构建和它的原生质球的转化和再生

It was found that cell surface of Ustilago maydis become smoother less rough and no pits appeared after adding hygromycin . 3 .

而潮霉素却使 黑 粉 菌的表面变的比较平滑，粗糙度降低，没有出现坑。

The main contents are as follows : 1 . AFM study of the effect of triadimefon on the surface morphology of Ustilago maydis .

主要内容如下：1.用AFM研究三唑酮对 玉米 黑 粉 菌 后形貌的影响。

First we investigated the surface morphology of Ustilago maydis in the air and the effect of triadimefon on Ustilago maydis .

首先观测 玉米 黑 粉 菌在空气中的形貌，同时研究了三唑酮对玉米黑粉菌形貌的影响。

The results showed that Carboxin could not only inhibit the growth of Ustilago maydis but also induced pits in cell surface .

结果表明 萎锈灵对 黑 粉 菌不仅有生长的抑制作用，在 黑 粉 菌菌体的表面随机出现了很多 小坑。

Frequency and Distribution of Microsatellites in the Genome of Phytopathogenic Fungus Ustilago maydis

玉米 黑 粉病菌基因组中的微卫星序列的组成和分布

Our results demonstrate that triadimefon damaged the structure of Ustilago maydis surface . With the increase of triadimefon concentration the extent of damage was increased . 2 .

结果表明三唑酮破坏了 玉米 黑 粉 菌的结构，并随三唑酮浓度增加表面破坏程度增大。