CALCIUM-CHLORIDE AS A MAJOR COMPONENT CONTRIBUTING TO APHID RESISTANCE OF NICOTIANA-BENTHAMIANA

Citation
H. Harada et al., CALCIUM-CHLORIDE AS A MAJOR COMPONENT CONTRIBUTING TO APHID RESISTANCE OF NICOTIANA-BENTHAMIANA, Journal of chemical ecology, 22(9), 1996, pp. 1579-1589
Citations number
13
Language
INGLESE
art.tipo
Article
Categorie Soggetti
Ecology,Biology
Journal title
ISSN journal
0098-0331
Volume
22
Issue
9
Year of publication
1996
Pages
1579 - 1589
Database
ISI
SICI code
0098-0331(1996)22:9<1579:CAAMCC>2.0.ZU;2-P
Abstract
Substances with antiaphid activity were extracted from the leaf surfac e of aphid-resistant N. benthamiana and purified. Sugar esters and dia cyl glycerols were isolated from the chloroform extract, but only diac yl glycerols showed significant activity. However, the major activity was found in the water extract rather than in the chloroform extract. From the water extract calcium chloride was isolated as the most abund ant active substance. Only calcium chloride showed significant activit y among several calcium salts and chlorides of several metals that are abundant in plants. Calcium contents per unit area of leaf surface of N. benthamiana and aphid-resistant N. gossei were almost equal to eac h other and 10-100 times higher than that of aphid-susceptible N. taba cum.