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CHANGES IN CHLOROPHYLL‐PROTEIN COMPLEXES ASSOCIATED WITH JUNE YELLOWS OF STRAWBERRY *
Author(s) -
Jeong BR.,
Daley L. S.,
Postman J.,
Proebsting W. M.,
Lawrence F. J.
Publication year - 1988
Publication title -
photochemistry and photobiology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.818
H-Index - 131
eISSN - 1751-1097
pISSN - 0031-8655
DOI - 10.1111/j.1751-1097.1988.tb02699.x
Subject(s) - clone (java method) , biology , botany , chlorophyll , horticulture , genetics , gene
— June yellows (J‐y) of strawberry ( Fragaria ) is an inheritable condition for which no causal pathogen has been demonstrated. Spectroscopic analysis of intact leaf lamina was applied to strawberry leaves with J‐y. The spectra were analyzed by fourth derivative technique. Differences were found between asymptomatic and affected leaves with respect to chlorophyll‐protein complexes. Affected leaves show spectra consistent with loss of certain chlorophyll‐ a ‐proteins (C a ). Distinct types of effects are found. In one type C a 684 decreases, in another C a 693 is diminished. Studies of strawberry clone pedigree suggest that C a 684 losses are observed in clones with Howard 17 parentage, and C a 693 losses in clones with Aberdeen parentage. One clone with both Howard 17 and Aberdeen parentage had a spectra consistent with diminished C a 684 and C a 693. The simplest explanation of the data is that J‐y results from several different types of genetic lesions on different C a . Some viral infection effects on C a spectra are also described.