The glucosinolate regulation in plant: A new view on lanthanum stimulating the growth of plant
来源期刊：Journal of Rare Earths2019年第5期
论文作者：Qing Yang Lihong Wang Li Zhou Zhenbiao Yang Qing Zhou Xiaohua Huang
文章页码：555 - 564
摘 要：The harmful effect of low-concentration lanthanum [La（Ⅲ）] on plants was investigated by choosing horseradish as a representative of plants and using the methods of physics, analytical chemistry and biology. The results show that the genetic expressions related to glucosinolates（GLS, the marker of plant resisting harmful effects） synthesis are significantly increased after the endocytosis in leaf cells is initiated by low-concentrations La（Ⅲ）. Consequently, the activities in the key enzymes for catalyzing the GLS synthesis are promoted. Meanwhile, the contents of the precursors and substrates in GLS synthesis are increased. All the above changes accelerate the GLS synthesis and result in the maximum increase in GLS content by 14%. Finally, the uptake of nutrient elements in horseradish is enhanced, and the yield of horseradish is maximally increased by 25%. Therefore, low-concentration La（Ⅲ） is harmful to plants, and plants can promote growth to resist the harmful effects of low-concentration La（Ⅲ） by regulating GLS content. The results show a new insight into how rare earth elements stimulate plant growth, and provide a reference for the risk assessment of rare earth elements.
Qing Yang1，Lihong Wang2，Li Zhou2，Zhenbiao Yang3，Qing Zhou2，Xiaohua Huang1
1. National and Local Joint Engineering Research Center of Biomedical Functional Materials, Jiangsu Collaborative Innovation Center of Biomedical Functional Materials, School of Chemistry and Materials Science, Nanjing Normal University2. State Key Laboratory of Food Science and Technology, Jiangnan University3. Center for Plant Cell Biology, Institute for Integrative Genome Biology, University of California
摘 要：The harmful effect of low-concentration lanthanum [La（Ⅲ）] on plants was investigated by choosing horseradish as a representative of plants and using the methods of physics, analytical chemistry and biology. The results show that the genetic expressions related to glucosinolates（GLS, the marker of plant resisting harmful effects） synthesis are significantly increased after the endocytosis in leaf cells is initiated by low-concentrations La（Ⅲ）. Consequently, the activities in the key enzymes for catalyzing the GLS synthesis are promoted. Meanwhile, the contents of the precursors and substrates in GLS synthesis are increased. All the above changes accelerate the GLS synthesis and result in the maximum increase in GLS content by 14%. Finally, the uptake of nutrient elements in horseradish is enhanced, and the yield of horseradish is maximally increased by 25%. Therefore, low-concentration La（Ⅲ） is harmful to plants, and plants can promote growth to resist the harmful effects of low-concentration La（Ⅲ） by regulating GLS content. The results show a new insight into how rare earth elements stimulate plant growth, and provide a reference for the risk assessment of rare earth elements.
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