Biochemical defense responses of black pepper (Piper nigrum L.) lines to Phytophthora capsici

被引：18
|
作者：
Vandana, V. V. [1 ]
Bhai, Suseela R. [1 ]
Azeez, Shamina [2 ]
机构：
[1] Indian Inst Spices Res, Kozhikode 673012, Kerala, India
[2] Indian Inst Hort Res, Bangaluru 560089, Karnataka, India
来源：
PHYSIOLOGICAL AND MOLECULAR PLANT PATHOLOGY | 2014年 / 88卷
关键词：
Defense related enzymes; Lignin; Membrane conductance; Orthodihydroxy phenol; Phytophthora capsici; Total phenols; PEROXIDASE-ACTIVITY; OXIDATIVE BURST; RESISTANCE; ENZYMES; BETA-1,3-GLUCANASE; PURIFICATION; INDUCTION; INFECTION; CUCUMBER; MARKER;
D O I：
10.1016/j.pmpp.2014.06.003
中图分类号：
Q94 [植物学];
学科分类号：
071001 ;
摘要：
A study on biochemical factors involved in black pepper defense response against Phytophthora capsici, was carried out in P. capsici susceptible (Sreekara) and resistant (04-P24, shows root resistance to the pathogen) black pepper lines. Seven important factors e change in membrane conductance, total phenols, orthodihydroxy (OD) phenols, lignin and defense related enzymes (peroxidase, beta-1,3 glucanase and beta-1,4 glucanase) - were studied under uninoculated and pathogen (P. capsici, isolate 06-04) inoculated condition to know the preformed and induced responses. The pathogen was inoculated (soil inoculation) and plants were observed for changes, at 24 h intervals for 10 days. On 8th day after inoculation symptoms started appearing on Sreekara and increased the severity till 10th day. Both root and stem samples were subjected for biochemical analysis. Of the factors analyzed, it was found that membrane conductance, OD phenol, lignin and peroxidase activity play significant role in root resistance to P. capsici in 04-P24. Light microscopy of the portion of root - where pathogen found attached - was also done. (C) 2014 Elsevier Ltd. All rights reserved.
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页码：18 / 27
页数：10
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