Induction of callose formation is a sensitive marker for genotypic aluminium sensitivity in maize

被引:124
作者
Horst, WJ
Puschel, AK
Schmohl, N
机构
[1] Institute for Plant Nutrition, University of Hannover, Herrenhäuser Str. 2
关键词
aluminium; callose; protoplasts; resistance; toxicity; Zea mays;
D O I
10.1023/A:1004204120863
中图分类号
S3 [农学(农艺学)];
学科分类号
0901 ;
摘要
The screening of 37 Zea mays L. cultivars in nutrient solution using root elongation (24 h) as a parameter showed large genotypic differences in Al resistance among the genetic material evaluated. Callose concentrations in root tips were closely and positively related to Al-induced inhibition of root elongation. Therefore, Al-induced callose formation in root tips appears to be an excellent indicator of Al injury and can be used as a selection criteria for Al sensitivity. In contrast, aluminium concentrations in root tips were not related to Al-induced inhibition of root elongation, nor to Al-induced callose formation. Callose formation was also induced by short-term Al treatment in root tip protoplasts, and the response of protoplasts clearly reflected the cultivar-specific response to Al of intact roots. This indicates that in maize, Al sensitivity is expressed on the protoplast level.
引用
收藏
页码:23 / 30
页数:8
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