Characterization of Rhizoctonia solani AG 4HG-III causing stem canker and wirestem on green amaranth and chinese amaranth

被引：9

作者：

Yang, GH ^{[1
]}

Chen, HR

Naito, S

Ogoshi, A

机构：

[1] Yunnan Agr Univ, Phytopathol Lab Yunnan Province, Kunming 650201, Yunnan Province, Peoples R China

[2] Hokkaido Univ, Grad Sch Agr, Sapporo, Hokkaido, Japan

[3] Hokkaido Starch Ind Soc, Sapporo, Hokkaido, Japan

来源：

JOURNAL OF PHYTOPATHOLOGY | 2005年 / 153卷 / 03期

关键词：

stem canter; wirestem; Green amaranth; Chinese amaranth; AG; 4HG-III;

D O I：

10.1111/j.1439-0434.2005.00938.x

中图分类号：

Q94 [植物学];

学科分类号：

071001 ;

摘要：

During December 2003, stem canker and wirestem were observed on the stems of green amaranth (Amaranthus viridis) and Chinese amaranth (Amaranthus tricolor) in greenhouses at Ximao district in Yunnnan Province, China. Isolates of Rhizoctonia solani obtained from the two amaranths with stem canker and wirestem, were identical to anastomosis group (AG)-4. The isolates from diseased plant showed high virulence on young seedlings of two amaranths. Results of sequence analysis of 5.8s rDNA-ITS of Chinese isolates showed 99-100% sequence similarity with AG-4HG-III tester isolates. When compared with other subgroups of AG-4, Chinese isolates showed similarity levels of 94%. This is the first report of stem canker and wirestem of Green amaranth and Chinese amaranth caused by AG-4HG-III and AG-4HG-III in China.

引用

页码：185 / 187

页数：3

共 6 条

[1]

[Anonymous], 1998, IDENTIFICATION RHIZO

[2] Identification at strain level of Rhizoctonia solani AG4 isolates by direct sequence of asymmetric PCR products of the ITS regions [J].