|Table of Contents|

Relationship Between the Activity of Four Defense Enzymes inLeaf and Phytophthora resistant of Pepper(PDF)

《北方园艺》[ISSN:1001-0009/CN:23-1247/S]

Issue:
2015年12
Page:
115-118
Research Field:
Publishing date:

Info

Title:
Relationship Between the Activity of Four Defense Enzymes inLeaf and Phytophthora resistant of Pepper
Author(s):
ZOU Chun-lei 1; LIU Chang-yuan 2; WANG Li-ping 1; WANG Hui 2; XIN Bin 1; SUN Bao-shan 1
1.Vegetable Research Institute,Liaoning Academy of Agricultural Sciences,Shenyang，Liaoning 110161;2.Institute of Plant Protection，Liaoning Academy of Agricultural Sciences,Shenyang，Liaoning 110161
Keywords:
pepper; Phytophthora capsici; defense enzymes; disease resistance
PACS:
S 436.341.1
DOI:
10.11937/bfyy.201512029
Abstract:
Taking three near isogenic lines with different phytophthora resistance as the experimental material,the activities of four enzymes(β-1，3-glucanase,chitinase,PAL,POD) were detected after induced by race 3 of Phytophthora capsici. The relationship between the activity of four defense enzymes in leaf and phytophthoraresistant of pepper was studied.The results showed that the activities of four defense enzymes in pepper’s leaves were increased by infection of Phytophthora capsici, the rate of enzyme activity for β-1,3-glacanase，chitinase，PAL，POD in resistant lines after infection of Phytophthora capsici was 164.4%,99.1%,173.7%,107.6%；but in susceptible lines was 91.8%,48.1%,93.1%,64.0%,the increase in activities was faster and higher，and lasted longer in a resistant lines than that in susceptible lines.The activities of enzymes in mid resistant lines were between two of above.The results suggested that β-1,3-glacanase,chitinase,PAL and POD could be induced by Phytophthora capsici and the relationship between the activities of the four enzymes and the resistance of pepper was positive.In the resistant line,the rate of enzyme activity for β-1,3-glacanase was 1.66 times higher than chitinase;PAL was 1.61 times higher than POD.The inhibition of β-1,3-glacanase and chitinase to mycelia growth and sporangia formation were observed.β-1,3-glacanase was significantly higher than that of control，chitinase showed no clear inhibition to Phytophthora capsici.

References:

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Last Update: 2015-08-10