Abstract:
:Photosystem I electron transport activity has been found to be considerably higher in a decaploid tall fescue (Festuca arundinacea Schreb.) genotype as compared to a common hexaploid genotype. The decaploid genotype also displayed a higher photosystem whole chain (Photosystem II plus Photosystem I uncoupled) activity, suggesting a connection between polyploidy and increased electron transport activity. However, when a polyploidy series of tall fescue, ranging from diploid to decaploid with several different genetic isolates at each ploidy level, was examined in natural growth conditions, no effect of increasing genome content on electron transport and photophosphorylation was found. These results suggest that a gene component of one of the genomes involved may be responsible for the increased activity rather than simply the total chromosome content.
journal_name
Plant Physioljournal_title
Plant physiologyauthors
Krueger RW,Miles Ddoi
10.1104/pp.68.5.1110subject
Has Abstractpub_date
1981-11-01 00:00:00pages
1110-4issue
5eissn
0032-0889issn
1532-2548journal_volume
68pub_type
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