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The implication of a plastid-derived factor in the transcriptional control of nuclear genes encoding the light-harvesting chlorophyll a/b protein.
The results suggest that, in addition to phytochrome (Pfr), plastid-dependent factors are required for a continuous light-dependent transcription of nuclear genes encoding the LHCP. Expand
How Striga Parasitizes its Host: a TEM and SEM Study
Abstract The cellular contact betweenStriga hermonthicaandStriga asiaticaand their hosts,Zea maysandSorghum bicolor, was investigated by light, transmission electron and scanning electron microscopy.Expand
Molecular, functional and ultrastructural characterisation of plastids from six species of the parasitic flowering plant genus Cuscuta
The genus Cuscuta comprises species with different degrees of plastid functionality, ranging from intact chloroplasts, via plastids with impaired protein production and gene expression to plASTids with reduced plastome gene content. Expand
Symplasmic sieve element continuity between Orobanche and its host.
Electron microscopical investigations of primary haustoria of Orobanche crenata parasitizing the roots of the highly compatible host, Vicia narbonensis, reveal an uninterrupted phloem systemExpand
Filamentous proteins form plant sieve tubes.
Individual filamentous structures from the phloem exudate of cut cucurbit stems are isolated and the presence of the filaments could be clearly demonstrated after negative staining with the electron microscope. Expand
Electron Microscopic Analysis of the Penetration Process ofFusarium nygamai,a Hyperparasite ofStriga hermonthica
Electro microscopic evidence of the infection process of the facultative fungal parasite F. nygamaic, which was able to reduce the germination of seeds of the root-parasitic weed Striga hermonthica, is provided. Expand
Filament formation in vitro of a sieve tube protein from Cucurbita maxima and Cucurbita pepo
From the two main proteins, only the 116000 dalton protein was found to form reversibly distinct filaments of 6–7 nm diameter upon removal of SH-protecting agents from the buffer, whereas the 30000 dalon protein was precipitated as amorphous material under these conditions. Expand
Development of Cuscuta species on a partially incompatible host: induction of xylem transfer cells
Summary. The growth of dodders, Cuscuta reflexa and Cuscuta japonica, on the partially incompatible host poinsettia (Euphorbia pulcherrima) is studied. Poinsettia responds by bark growths to theExpand