The algal polysaccharide carrageenans can act as an elicitor of plant defence

被引:166
作者
Mercier, L
Lafitte, C
Borderies, G
Briand, X
Esquerré-Tugayé, MT
Fournier, J
机构
[1] CNRS, UMR, UPS Signaux & Messages Cellulaires Vegetaux 5546, F-31326 Castanet Tolosan, France
[2] SECMA Biotechnol Marines, F-22260 Pontrieux, France
关键词
Nicotiana tabacum (tobacco); plant defence; elicitor; algal polysaccharides; laminarin; carrageenan;
D O I
10.1046/j.1469-8137.2001.00011.x
中图分类号
Q94 [植物学];
学科分类号
071001 ;
摘要
Effects of two algal polysaccharides, laminarin and carrageenans, on defence responses and signalling in tobacco plants is presented. A possible role as defence elicitors is important in the context of the use of algal extracts as plant protectants. The effect of the extracts was assessed after infiltration of tobacco leaves, and compared to the effect of a known elicitor of Phytophthora parasitica var. nicotianae (Ppn). Of the two algal polysaccharides, only carrageenans efficiently induced signalling and defence gene expression in tobacco leaves, as observed with Ppn elicitor. lambda -carrageenan, with its high sulphate content, proved the most active. Defence genes encoding sesquiterpene cylase, chitinase and proteinase inhibitor were induced locally, and the signalling pathways mediated by ethylene, jasmonic acid and salicylic acid, were triggered. Some effects lasted for at least a week. lambda -Carrageenan can elicit an array of plant defence responses, possibly through an effect of its high sulphate content. This helps clarify the mechanism of plant protection by algal extracts.
引用
收藏
页码:43 / 51
页数:9
相关论文
共 36 条
[31]   HYDROXYPROLINE-CONTAINING FRAGMENTS IN THE CELL-WALL OF PHYTOPHTHORA-PARASITICA [J].
ROUX, C ;
MAZAU, D ;
RICKAUER, M ;
FOURNIER, J ;
BERTHALON, E ;
ESQUERRETUGAYE, MT .
PHYTOCHEMISTRY, 1994, 35 (03) :591-595
[32]  
Sambrook J., 2002, MOL CLONING LAB MANU
[33]   REGULATION OF A PLANT PATHOGENESIS-RELATED ENZYME - INHIBITION OF CHITINASE AND CHITINASE MESSENGER-RNA ACCUMULATION IN CULTURED TOBACCO TISSUES BY AUXIN AND CYTOKININ [J].
SHINSHI, H ;
MOHNEN, D ;
MEINS, F .
PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA, 1987, 84 (01) :89-93
[34]  
STEPHENSON WM, 1966, P INT SEAW S, V5, P405
[35]   The structure and function of a soybean beta-glucan-elicitor-binding protein [J].
Umemoto, N ;
Kakitani, M ;
Iwamatsu, A ;
Yoshikawa, M ;
Yamaoka, N ;
Ishida, I .
PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA, 1997, 94 (03) :1029-1034
[36]  
VERONESI C, 1995, PLANT PHYSIOL, V108, P1342