ACTIVE OXYGEN SPECIES IN THE INDUCTION OF PLANT SYSTEMIC ACQUIRED-RESISTANCE BY SALICYLIC-ACID

被引：938
作者：
CHEN, ZX [1 ]
SILVA, H [1 ]
KLESSIG, DF [1 ]
机构：
[1] RUTGERS UNIV,WAKSMAN INST,PISCATAWAY,NJ 08855
来源：
SCIENCE | 1993年 / 262卷 / 5141期
关键词：
D O I：
10.1126/science.8266079
中图分类号：
O [数理科学和化学]; P [天文学、地球科学]; Q [生物科学]; N [自然科学总论];
学科分类号：
07 ; 0710 ; 09 ;
摘要：
A complementary DNA encoding a salicylic acid (SA)-binding protein has been cloned. Its properties suggest involvement in SA-mediated induction of systemic acquired resistance (SAR) in plants. The sequence of the protein is similar to that of catalases and the protein exhibits catalase activity. Salicylic acid specifically inhibited the catalase activity in vitro and induced an increase in H2O2 concentrations in vivo. H2O2 or compounds, such as SA, that inhibit catalases or enhance the generation of H2O2, induced expression of defense-related genes associated with SAR. Thus, the action of SA in SAR is likely mediated by elevated amounts of H2O2.
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页码：1883 / 1886
页数：4
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