植物紫色酸性磷酸酶基因家族功能研究进展

魏铭^1,²,王鑫伟¹,陈博¹,宋程威¹,杜亮¹,肖建伟¹,林金星^1,^*(

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Research Progress into the Function of Purple Acid Phosphatase Gene Family in Plants

Ming Wei^1,²,Xinwei Wang¹,Bo Chen¹,Chengwei Song¹,Liang Du¹,Jianwei Xiao¹,Jinxing Lin^1,^*(

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图3. 缺磷情况下分泌型酸性磷酸酶的诱导表达及其根际分泌与排根形成示意图(改自Wasaki et al., 2003)
(A) 磷充足条件下, SAP聚集在根表皮细胞周围, 只有少量SAP分泌; (B) 磷胁迫条件下, SAP在12小时内从根部迅速分泌, 但在长时间保持较低水平; (C) 组织中磷含量明显下降后, 根系成簇排列, 形成排根, SAP分泌量显著增加。

Figure 3. Schematic model of SAP expression and formation of cluster root under phosphorus deficiency (modified from Wasaki et al., 2003)
(A) Under sufficient P conditions, SAP localizes around the epidermal cells of roots, and only a small amount of SAP is secreted; (B) After P stress treatment, SAP is released from roots rapidly within 12 h, however, SAP secretion remains at a low level for a long time; (C) After the decrease of P content in tissues, cluster roots form and SAP secretion significantly increases.