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Genetic variability beetwen selected genotypes of paleoendemic Chinese species – Davidia involucrata introduced to Western Pomerania

100%

Kulpa D., Smolik M., Dobrochowska M.

Acta Scientiarum Polonorum. Biotechnologia

2011

tom 10

nr 3

The aim of conducted studies was to determine genetic and morphological variability of selected Davidia involucrata specimens from Western Pomerania and Berlin us- ing ISSR-PCR technique. The studies were carried out on the Davidia involucrata var. vilmoriniana growing in Germany in the Botanical Garden in Berlin-Dahlem and in Poland, in Pomerania: in the Dendrological Garden in Przelewice, Glinna and Central Cemetary in Szczecin. ISSR technique made it possible to determine genetic variability of the examined specimens. This was done by means of 6 out of 30 ISSR primers used in the experiment. Six primers (802, 807, 810, 819, 839, 840) generated in PCR reactions 64 amplicons, of which: 11 were monomorphic, 31 – polymorphic and 12 – genotype-specific. On average 1 primer generated 10 amplicons which ranged from 2550 to 270 bp.

Responses to UV-B exposure by saplings of the relict species Davidia involucrata Bill are modified by soil nitrogen availability

100%

Li Y., Gao J., Zhang L., Su Z.

Polish Journal of Ecology

2014

tom 62

nr 1

Climate change scenarios suggest that plants will be exposed to increasing levels of ultraviolet radiation in the future. The dove tree, Davidia involucrata Bill (Davidiaceae) is a rare and endangered tree species in China. Its distribution is predicted to become more montane as the climate warms, exposing it to higher levels of UV-B and different soil conditions. We compared the effects of glasshouse ambient (7.08 uW cm–2) and increased (13.93 uW cm–2) UV-B on survivorship, secondary metabolites indicative of radiation damage, and putative defensive responses of Davidia involucrata saplings growing under current and increased nitrogen conditions (5 and 25 g m–2 a–1 N). Mortalities were higher among plants exposed to increased UV-B, but only in soils with high supplementary nitrogen. Increases in compounds associated with defense against radiation were more frequently recorded under high supplementary nitrogen conditions. This rare and localised plant is highly sensitive to elevated UV-B when growing in high nitrogen soils, a combination that is likely to increase in the summer.

Ograniczanie wyników

1 Acta Scientiarum Polonorum. Biotechnologia

1 Polish Journal of Ecology

1 Dobrochowska M.

1 Gao J.

1 Kulpa D.

1 Li Y.

1 Smolik M.

1 Su Z.

1 Zhang L.

1 2014

1 2011

Wyniki wyszukiwania

Genetic variability beetwen selected genotypes of paleoendemic Chinese species – Davidia involucrata introduced to Western Pomerania

Responses to UV-B exposure by saplings of the relict species Davidia involucrata Bill are modified by soil nitrogen availability