摘要
Aluminum(Al) is the third most abundant element in the earth's crust and a major factor inhibiting plant growth and reducing crop yield in acidic soil. Although there is substantial research on the phytotoxic effects and the underlying mechanisms of Al by applying Al alone hydroponically, soil is a complex medium containing numerous mineral elements that can interact with Al and other elements and their bioavailability in plants. In this review, we describe the roles of Al in promoting plant growth, enhancing phosphorus availability and efficient use in plants, and alleviating H+, iron, and manganese toxicity in acidic conditions. Furthermore, we discuss the possible mechanisms of enhanced abiotic stress tolerance induced by Al. We also elucidate the role of Al in attracting plant growth promoting rhizo-bacteria(PGPR) and their interactions with plants by increasing organic exudates.
Aluminum(Al) is the third most abundant element in the earth's crust and a major factor inhibiting plant growth and reducing crop yield in acidic soil. Although there is substantial research on the phytotoxic effects and the underlying mechanisms of Al by applying Al alone hydroponically, soil is a complex medium containing numerous mineral elements that can interact with Al and other elements and their bioavailability in plants. In this review, we describe the roles of Al in promoting plant growth, enhancing phosphorus availability and efficient use in plants, and alleviating H+, iron, and manganese toxicity in acidic conditions. Furthermore, we discuss the possible mechanisms of enhanced abiotic stress tolerance induced by Al. We also elucidate the role of Al in attracting plant growth promoting rhizo-bacteria(PGPR) and their interactions with plants by increasing organic exudates.
引文
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