The response of Cochliobolus sativus to ultraviolet-C radiation

被引：2

作者：

Arabi, MIE ^{[1
]}

Jawhar, M ^{[1
]}

机构：

[1] Atom Energy Commiss Syria, Dept Mol Biol & Biotechnol, Damascus, Syria

来源：

JOURNAL OF PHYTOPATHOLOGY | 2001年 / 149卷 / 09期

关键词：

barley (Hordeum vulgare L.); Cochliobolus sativus; common root rot; ultraviolet-C radiation;

D O I：

10.1046/j.1439-0434.2001.00669.x

中图分类号：

Q94 [植物学];

学科分类号：

071001 ;

摘要：

Isolates of Cochliobolus sativus, the cause of common root rot of barley, were collected from different regions of Syria, and exposed in the laboratory to ultraviolet-C (UV-C) light (254 nm) during periods of 40 or 60 h with a dose rate of 2.52 x 10(-3) W/cm(2). Significant increases (P < 0.001) in mycelial growth and sporulation were detected in comparison with the nonirradiated control, and these increased with increasing exposure to UV-C. This exposure increased the mycelial growth by 89 and 100% in the isolates CR9 and CR19, respectively, and the number of spores by 10- and 13-fold, respectively. Some of the isolates retained and some increased in virulence. These data demonstrate that variation occurred in the virulence level and the resistance level of isolates and among accessions, respectively.

引用

页码：521 / 525

页数：5

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