GmAP2 enhances plant tolerance to aluminum toxicity and phosphorus deficiency in Arabidopsis

作者：Cheng Li, Pengfei Du, Lidan Wang, Xin Xu, Hongying Zhong, Yanbo Cheng, Tengxiang Lian, Lü Li, Qibin Ma · 发表于：Plant Cell Reports · 年份：2025 · DOI：10.1007/s00299-025-03622-7 · 被引用次数：3 · 研究领域：Aluminum toxicity and tolerance in plants and animals、Plant nutrient uptake and metabolism、Silicon Effects in Agriculture

KEY MESSAGE: Overexpression of the GmAP2 gene regulates several aspects of gene expression in Arabidopsis, including acid-aluminum stress, low-phosphorus stress, ERF family transcription factors, ABA signaling, and genes related to lateral root development. The overexpression of GmAP2 can help plants mitigate the effects of aluminum toxicity and increase their tolerance to low-phosphorus stress. Ethylene response factors (ERFs) represent one of the largest transcription factor families in plants and are involved in regulating biotic and abiotic stresses, as well as growth and development in higher plants. In this study, the soybean GmAP2 gene, encoding the AP2/ERF transcription factor, is a downstream gene of GsMYB7, which enhances soybean tolerance to aluminum toxicity under acidic conditions, referred to as acid-aluminum stress. The expression pattern of GmAP2, which is constitutive and rich in roots, was upregulated under acid-aluminum and low-phosphorus stress. The resistance phenotypes of the wild-type and GmAP2-overexpressing lines were investigated by treatment with acid-aluminum plates and low-phosphorus plates, respectively. The results revealed significant differences between the GmAP2 transgenic lines and the wild type, and compared with the wild-type plants, the genetically modified plants presented significantly better physiological indicators, such as fresh weight, root length, and number of lateral roots. Under acid-aluminum stress, changes in weight, MDA conte...