ALARM SYSTEMS IN HIGHER-PLANTS

被引:22
作者
CHESSIN, M
ZIPF, AE
机构
[1] USDA, ARS, Mississippi, 39762
[2] Division of Biological Sciences, University of Montana, Missoula, Montana
关键词
D O I
10.1007/BF02858325
中图分类号
Q94 [植物学];
学科分类号
071001 ;
摘要
The defenses of higher plants against a variety of biotic and abiotic stress agents can be grouped into two categories: Preformed and Induced. Induced defensive responses by the plant, or “alarms”—the subject of the present review—can be localized or systemic. Certain alarms, especially those which are induced by necrotizing pathogens, are protective against a wide variety of biotic stress agents. Other responses appear protective but the degree of host plant involvement is unclear. Finally, there are a few induced plant responses which, although protective, do not easily fit our criteria of an “alarm.” Oligosaccharins may be involved as signals in both anti-herbivore and anti-pathogen alarm systems. Other specific components of plant alarms appear to be induced by only one type of stress agent. The specificity of protection, mechanisms of various alarms and comparisons between them are presented. © 1990, The New York Botanical Garden. All rights reserved.
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页码:193 / 235
页数:43
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