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The Hypersensitive Reaction of Soybean Cultivars to Tobacco Necrosis Virus Does Not Induce Systemic Resistance but Inhibits Plant Growth
Author(s) -
Pennazio S.,
Roggero P.
Publication year - 1993
Publication title -
journal of phytopathology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.53
H-Index - 60
eISSN - 1439-0434
pISSN - 0931-1785
DOI - 10.1111/j.1439-0434.1993.tb01368.x
Subject(s) - biology , inoculation , cultivar , virus , hypersensitive response , necrosis , virology , systemic acquired resistance , plant virus , plant disease resistance , botany , horticulture , gene , biochemistry , arabidopsis , genetics , mutant
With soybean cultivars belonging to different maturation groups, the hypersensitive reaction to mechanically inoculated tobacco necrosis virus (TNV) did not induce systemic resistance against challenging viruses that infect locally (TNV) or systemically (alfalfa mosaic virus, AMV; soybean mosaic virus, SbMV). No form of resistance was found when resistance was tested by measuring the area and antigen content of necrotic local lesions induced by challenging TNV, or when it was tested by determining chlorophyll content and viral antigen in tissues systemically infected with AMV or SbMV. Growth of shoots was partially inhibited by the hypersensitive reaction produced by inoculation of TNV in primary soybean leaves. This inhibition was transient and did not appear to be due to stress ethylene produced by the inoculated leaves during lesion development. It was probably a consequence of nutrient depletion due to collapse of primary leaves following virus infection.