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논문 기본 정보

자료유형
학술저널
저자정보
Jingil Kim (Kyungpook National University) Sunyo Jung (Kyungpook National University)
저널정보
한국잡초학회·한국잔디학회 Weed&Turfgrass Science Weed&Turfgrass Science Vol.9 No.4
발행연도
2020.12
수록면
369 - 378 (10page)

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Rice plants were treated with either a low (50 μM, L-ALA) or a high (500 μM, H-ALA) concentration of 5-aminolevulinic acid (ALA) to find out the molecular mechanism underlying the ALA-caused modulation of porphyrin biosynthesis. Foliar application of H-ALA to rice plants developed necrotic symptom on leaves 2 days after the treatment, whereas no necrotic symptom was observed on leaves of L-ALA plants. After 2 days of ALA treatment, chlorophyll slightly increased in L-ALA plants, but decreased in H-ALA plants. While H-ALA treatment greatly decreased ALA-synthesizing capacity, L-ALA treatment did not show a significant change in ALA-synthesizing capacity. Plants treated with H-ALA exhibited a greater decline in transcript levels of HEMA1 than plants treated with L-ALA. The decrease in transcript levels of GSA did not differ between L-ALA and H-ALA plants, whereas ALAD greatly downregulated only in H-ALA plants. PPO1 was upregulated after 2 days of L-ALA treatment, but greatly downregulated with H-ALA treatment. Expression levels of CHLH, CHLD, and PORB remained or slightly decreased after 2 days of L-ALA treatment, but markedly decreased after 1 day of H-ALA treatment. This study demonstrates that a regulatory mechanism of porphyrin biosynthesis is differentially adjusted to the cellular demands in response to exogenous supply of low and high ALA concentrations.

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Abstract
Introduction
Materials and methods
Results and discussion
References

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