摘要
低磷供应成为全球土壤共性问题,磷是植物生长必需大量元素之一,在细胞组成、物质与能量代谢以及信号转导等关键细胞功能发挥中起着重要作用。磷酸盐转运蛋白(phosphate transporter, PHT)编码基因在调节植物生长发育、根形态建成、次生代谢、激素响应以及调节磷素平衡方面起着重要作用。药用植物活性成分大多为次生代谢产物,因此揭示磷素调控与药用植物有效成分积累关系是药用植物关注焦点,特别是低磷胁迫对根类药材的根形态建成影响及其与激素响应的偶联调控作用密切相关。随着分子生物学的不断深入研究,药用植物也逐渐开始关注PHT对药用植物次生代谢的调控机制。通过对植物长期进化过程中适应低磷环境形成的一系列策略:改变根形态建成、抑制主根生长、形成簇根系并改变体内生理代谢等、低磷胁迫响应蛋白PHT及其调控网络;药用植物响应磷饥饿的表型生物学特征、关键基因及其响应机制进行综述,以期为药用植物“优质优形优价”的生态栽培提供理论依据。
The content of available phosphorus in soil is generally low worldwide. Phosphorus, one of the necessary macroelements for plant growth and development, plays an important role in cell structure, material composition and energy metabolism, and signal transduction in plants. Phosphate transporter(PHT) genes are important for plant growth and development, root morphogenesis, secondary metabolism, hormone response, and phosphorus balance. Most of the active components in medicinal plants are secondary metabolites. Thus, it is essential to reveal the relationship between the regulation of phosphorus and the accumulation of active components in medicinal plants, especially the effect of phosphorus starvation on root morphogenesis of root medicinal materials and its coupling with hormone response. With advancement of molecular biology, scholars gradually emphasize the mechanism of PHT regulating the secondary metabolism of medicinal plants. This study summarized the strategies of plants to adapt to low phosphorus environment, such as changing root morphogenesis, inhibiting taproot growth, forming cluster root and changing physiological metabolism, PHT, its regulatory network, phenotypic biological characteristics and key genes in medicinal plants related to phosphorus starvation, and the response mechanism. The findings are expected to lay a basis for the cultivation of medicinal plants with high quality, excellent shape, and high price.
作者
孙海
梁浩
张亚玉
SUN Hai;LIANG Hao;ZHANG Ya-yu(Institute of Special Animal and Plant Sciences,Chinese Academy of Agricultural Sciences,Changchun 130112,China;College of Pharmacy and Bioengineering,Chengdu University,Chengdu 610106,China;Jilin Provincial Key Laboratory of Traditional Chinese Medicinal Materials Cultivation and Propagation,Changchun 130112,China)
出处
《中国中药杂志》
CAS
CSCD
北大核心
2022年第24期6573-6580,共8页
China Journal of Chinese Materia Medica
基金
财政部和农业农村部国家现代农业产业技术体系项目(CARS-21)
吉林省科技发展计划项目(20210401106YY,20220401067YY)
国家重点研发计划项目子课题(2021YFD1600902)
关键词
药用植物
低磷胁迫
根形态建成
次生代谢产物
medicinal plant
low phosphorus stress
root morphogenesis
secondary metabolites
作者简介
孙海,博士,副研究员,主要从事逆境栽培与药用植物生理代谢机制研究,E-mail:caassh@126.com;通信作者:张亚玉,博士,研究员,主要从事药用植物栽培研究,E-mail:zyy1966999@sina.com
