Abstract: Aluminum is one of the most important factors that lead to soil acidification and inhibition of plant growth. It has negative effects with different magnitudes on plant growth, physiological and biochemical process, as well as processes at cell level and gene level. How to improve the aluminum tolerance of plants and alleviate the toxicity to plants has been a concern for many years. Here, we gave a review on the research progress of gene regulation related to alleviating aluminum toxicity in plants from the aspects of organic acids, active oxygen metabolism, plant hormones, and mineral nutrients. It is well known that organic acids play an important role in mitigating aluminum toxicity in plants. This is the most important progress in this field, which were mainly introduced in this review. We suggested that more attention should be paid to the research of organic acids in alleviating aluminum toxicity, and that the research on genes, transcription factors and their mechanisms closely related to alleviating aluminum toxicity in trees should be strengthened.

Key words: aluminum toxicity, plant, organic acid, gene regulation, mitigation measure.