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Effect of Salicylic Acid on Fatty Acid, Chlorophyll Fluorescence Parameters and Chloroplast Ultrastructure of Pear Leaves Infected by Physalosproa piricola Nose(PDF)

Chinese Journal of Applied & Environmental Biology[ISSN:1006-687X/CN:51-1482/Q]

Issue:
2008 No.01
Page:
43-047
Research Field:
Reviews
Publishing date:

Info

Title:
Effect of Salicylic Acid on Fatty Acid, Chlorophyll Fluorescence Parameters and Chloroplast Ultrastructure of Pear Leaves Infected by Physalosproa piricola Nose
Author(s):
LIU Zhaolong et al.
(1College of Horticulture, Nanjing Agricultural University, Nanjing 210095, China) (2Department of Biology, Ningde Teachers College, Ningde 352100, Fujian, China)
Keywords:
Keywords pear leaf Pnysalosproa piricola salicylic acid fatty acid chlorophyll fusorescence parameter chloroplast ultrastructure
CLC:
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PACS:
DOI:
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DocumentCode:

Abstract:
Abstract 03 mmol L-1 salicylic acid (SA) was used to pretreat the leaves of pear, which were then inoculated with Physalosproa piricola Nose 3 days later and 3 days after inoculation all indexes were measured. The measurement was made every 3 days for 5 times. The result showed that the UFA, IUFA, chlorophyll content, photochemical efficiency (Fv/Fm), potential activity of PSⅡ (Fv/Fo), quantum yield of PSⅡ (ΦPSⅡ) and photochemical quenching (qP) of the pear leaves treated by SA and infected with P. piricola were increased, but their nonphotochemical quenching (qN) decreased compared to those without treatment by SA. TEM observations showed that part of chloroplasts swelled and distorted, membrane fret bended and dispersed, starch grains decreased and symptoms greatly reduced after the treatment by SA. Fig 3, Tab 1, Ref 20

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Last Update: 2008-03-05