Inhibitory Effect of Gabaculine on the Biosynthesis of 5-Aminolevulinate in the Tigrina d^l2 Mutant of Barley

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概要

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• Six-day-old, dark-grown, seedlings of barley homozygous for the recessive mutation tigrina d^<12> accumulated 5-aminolevulinic acid (ALA) and protochlorophyll (ide) in amounts exceeding the wild type level. Transferring the etiolated mutant to light resulted in the destruction of pigments and the deterioration of the ALA forming system. Such deleterious effects did not occur using light-grown mutant or etiolated and greened wild type seedlings. Gabaculine (GAB) at 50 μM inhibited ALA synthesis by about 85% when etiolated wild type seedlings were exposed to light. In light-grown leaves of either wild type or mutant strain, ALA production was also sharply (ca. 75%) inhibited by GAB. During dark incubation, however, the inhibition of ALA accumulation did not exceed 50% in all types of tissues. The results give further evidence for the operation of the C_5 pathway in such seedlings since GAB decreased the biosynthesis of ALA to the same extent in both tigrina d^<12> mutant and wild type of barley.

• 日本植物生理学会の論文

著者

• Ameen-bukhari Ibrahim

  Department Of Botany And Mlcrobrology College Of Science (2455)

関連論文

• Inhibitory Effect of Gabaculine on the Biosynthesis of 5-Aminolevulinate in the Tigrina d^l2 Mutant of Barley

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