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Abnormal etioplast development in barley seedlings infected with BSMV by seed transmission
Author(s) -
Harsányi Anett,
Böddi Béla,
Bóka Károly,
Almási Asztéria,
Gáborjányi Richard
Publication year - 2002
Publication title -
physiologia plantarum
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.351
H-Index - 146
eISSN - 1399-3054
pISSN - 0031-9317
DOI - 10.1046/j.0031-9317.2001.1140120.x
Subject(s) - protochlorophyllide , etiolation , hordeum vulgare , biology , botany , transmission electron microscopy , ultrastructure , horticulture , chemistry , poaceae , biochemistry , chloroplast , materials science , gene , enzyme , nanotechnology
The effect of barley stripe mosaic hordeivirus (BSMV) was studied on the ultrastructure of etioplasts, protochlorophyllide forms and the greening process of barley ( Hordeum vulgare cv. Pannónia) plants infected by seed transmission. The leaves of 7‐ to 11‐day‐old etiolated seedlings were examined by transmission electron microscopy, fluorescence and absorption spectroscopy. The etioplasts of infected seedlings contained smaller prolamellar bodies with less regular membrane structure, while prothylakoid content was higher than in the control. The protochlorophyllide content of virus‐infected seedlings was reduced to 74% of the control. In the 77 K fluorescence spectra the relative amount of 655 nm emitting photoactive protochlorophyllide form decreased, and the amount of the 645 and 633 nm emitting forms increased in the infected leaves. A characteristic effect was observed in the process of the Shibata‐shift: 40 min delay was observed in the infected leaves. The results of this work proved that BSMV infection delays or inhibits plastid development and the formation of photosynthetic apparatus.