Comparative characteristic of near-isogenic lines differing by the Blp locus in respect to abiotic stress resistance
Year: 2019
Type: conference-paper
Abstract: The black color of seeds is a ubiquitous trait among plants.Black pigments are caused by polyphenolic polymeric compounds called melanins.The study of plant melanin is hampered because of its complex structure and chemical inertness.At the same time, an adaptive role of black pigments in unfavorable environments has been previously demonstrated.The aim of the current work was to compare near-isogenic barley lines carrying different alleles of the Blp locus controlling accumulation of melanins in the hull and grain pericarp under salinity, drought and cadmium toxicity.It was demonstrated that the lines did not differ in germination rate while they responded differently to stress exposures at the seedling stage.The pronounced decline in root and shoot length in the black-spiked line compared with the yellow-spiked one was observed under drought stress conditions, while under salinity and cadmium toxicity, slightly increased values of the relative shoot length of the black-and yellow-spiked lines were observed, respectively.The data obtained demonstrated that neither the Blp gene nor black pigmentation controlled by this gene confer any advantages on barley plants at the seedling stage under stress conditions tested.
Language: English
Subfield: Plant Science
Domain: Life Sciences
SDG: Zero hunger
Open Access status: bronze
Funder: Russian Science Foundation
Awards: G3465614129, G7843975962
OpenAlex ID: W4229853262