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Genome and plastome effects on photosynthesis parameters in Oenothera species of differential low‐temperature tolerance
Author(s) -
Dauborn Babette,
Brüggemann Wolfgang
Publication year - 1996
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 - 10.1111/j.1399-3054.1996.tb00481.x
Subject(s) - oenothera , chloroplast dna , biology , plastid , botany , onagraceae , photosynthesis , chloroplast , gene , genetics
The influence of the plastid genome (plastome) on the temperature dependence of chlorophyll fluorescence parameters was studied in four Oenothera species from climatically different habitats. Equipped with their natural plastome, the species could be arranged with respect to their low‐temperature tolerance in the order Oe‘villosa’ (plastome I) = Oe argillicola (V) > Oe. grandiflora (III) > Oe elata ssp. hookeri (J). Exchanging the naturally occurring plastome with those from other species did not result in changes of the photosynthetic performance of the genotypes, except for decreasing pigment contents and photosynthesis rates (on area basis) in Oe. elata ssp. hookeri with plastome III. Furthermore, plastome exchange in Oe. elata ssp. hookeri and in Oe. grandiflora did not affect kinetic properties of purified ribulose‐l,5‐bis‐phosphate carboxylase/oxygenase (EC 4,1.1.39), indicating that the gene for the large subunit of this enzyme has remained conserved during plastome evolution in Oenothera . It is concluded that the evolution of the plastome in North American Oenothera spp. did not influence the temperature adaptation of the photosynthetic apparatus, but that the latter is governed by effects residing in the nuclear genome.