VESICULAR-ARBUSCULAR MYCORRHIZAL FUNGI INDUCED ALTERATION IN POPLAR ROOT-SYSTEM MORPHOLOGY

被引:89
作者
HOOKER, JE
MUNRO, M
ATKINSON, D
机构
[1] Department of Agriculture, University of Aberdeen, Aberdeen, AB9 1UD
关键词
IMAGE ANALYSIS; NUTRIENT; ROOT MORPHOLOGY; VA MYCORRHIZAL FUNGI;
D O I
10.1007/BF00010349
中图分类号
S3 [农学(农艺学)];
学科分类号
0901 ;
摘要
Poplar was grown in a soil either inoculated with Scutellispora calospora, Glomus sp E3 or Glomus caledonium or to which a nutrient solution had been added, in order to determine effects on root morphology. Plants were harvested after 115 days. The lengths of individual roots were measured using image analysis and percentage colonisation was determined for different root orders. Colonisation did not affect plant size but induced large changes in root morphology, with lengths of individual secondary and tertiary roots increased in some cases by up to 100%. Root branching was also increased with number of laterals per unit length of colonised roots being up to 6 times greater than in non-colonised roots. These results clearly show that colonisation of roots by Vesicular-arbuscular mycorrhizal fungi can result in significant alteration to poplar root system morphology. They also suggest that the mechanisms of alteration are not entirely due to improved host plant nutrition.
引用
收藏
页码:207 / 214
页数:8
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