DISTRIBUTION OF SILICON IN CUCUMBER LEAVES DURING INFECTION BY POWDERY MILDEW FUNGUS (SPHAEROTHECA-FULIGINEA)

被引：60

作者：

SAMUELS, AL ^{[1
]}

GLASS, ADM ^{[1
]}

EHRET, DL ^{[1
]}

MENZIES, JG ^{[1
]}

机构：

[1] AGR CANADA,RES STN,AGASSIZ V0M 1A0,BC,CANADA

来源：

CANADIAN JOURNAL OF BOTANY-REVUE CANADIENNE DE BOTANIQUE | 1991年 / 69卷 / 01期

关键词：

SILICON; X-RAY ANALYSIS; HYDROPONICS; CUCUMIS-SATIVUS; SPHAEROTHECA-FULIGINEA;

D O I：

10.1139/b91-020

中图分类号：

Q94 [植物学];

学科分类号：

071001 ;

摘要：

The distribution of silicon in the leaf epidermis of cucumber (Cucumis sativus L.) grown in hydroponic nutrient solutions supplemented with soluble silicates was examined using scanning electron microscopy and energy dispersive x-ray analysis. Silicon was found primarily in cells surrounding the bases of the trichome hairs. During infection by Sphaerotheca fuliginea (Schlecht.:Fr.) Poll., areas of host cell wall adjacent to the germinating hyphae showed altered surface morphology and high concentrations of silicon. Measurements of total hyphal length per colony showed the fungal colonies grown on silicate-treated plants were significantly smaller than fungal colonies grown on control plants. In the early stages of infection, the presence of high silicon surrounding colonies was correlated with lower fungal growth.

引用

页码：140 / 146

页数：7

共 27 条

[1] THE EFFECTS OF SILICON ON CUCUMBER PLANTS GROWN IN RECIRCULATING NUTRIENT SOLUTION [J].