Effects of Meloidogyne incognita Infection on Physiology and Biochemistry of Eggplant Seedling Leaves(PDF)

《北方园艺》[ISSN:1001-0009/CN:23-1247/S]

Issue:

2012年23期

Page:

139-142

Research Field:

Publishing date:

Info

Title:

Effects of Meloidogyne incognita Infection on Physiology and Biochemistry of Eggplant Seedling Leaves

Author(s):

WANG Bing-lin¹; HAN Tai-li¹; LI Yuan-yuan²

1.Weifang Academy of Agricultural Sciences，Weifang，Shandong 261071；

2.Department of Agriculture and Bioengineering，Weifang Academy，Weifang，Shandong 261061

Keywords:

eggplant; Meloidogyne incognita; seedling growth; SOD; POD; CAT; malondialdehyde(MDA)

PACS:

S 641.1

DOI:

-

Abstract:

‘Ziyangchangqie’ eggplant was used to study the effects of Meloidogyne incognita infection on seedlings growth，activities of protective enzymes and superoxidation of membrane lipid in leaves.The results indicated that the seedling growth was severely inhibited，and the root activity，and the fresh and dry weight of root，stem and leaf declined significantly with Meloidogyne incognita infection.Moreover，the plant height and stem diameter also decreased.On the whole，the activities of protective enzymes，namely，superoxide dismutase (SOD)，peroxidase (POD) and catalase (CAT)，increased at first but declined whereafter.The activities of SOD and CAT increased rapidly at 10 d post-inoculation (dpi)，and the activity of the former reached peak at 15 dpi，but declined whereafter，however，that of fhe later reached peak at 20 dpi.The activity of POD increased sharply at 15 dpi，and reached peak at 20 dpi，decreased subsequently.Furthermore，the Meloidogyne incognita infection also led to a persistent increase of the content of malondialdehyde (MDA) in leaves，and rised sharply at 15 dpi，which caused the cell membrane hurt and plant senescence early.

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