Lanthanum(III) triggers AtrbohD- and jasmonic acid-dependent systemic endocytosis in plants

Mengzhu Cheng, Lihong Wang, Qing Zhou, Daiyin Chao, Shingo Nagawa, Ding He, Jiazhi Zhang, Hui Li, Li Tan, Zhenhong Gu, Xiaohua Huang () and Zhenbiao Yang ()
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Mengzhu Cheng: Nanjing Normal University
Lihong Wang: Nanjing Normal University
Qing Zhou: Jiangnan University
Daiyin Chao: Chinese Academy of Sciences
Shingo Nagawa: Fujian Agriculture and Forestry University
Ding He: Jiangnan University
Jiazhi Zhang: Jiangnan University
Hui Li: Chinese Academy of Sciences
Li Tan: Chinese Academy of Sciences
Zhenhong Gu: Chinese Academy of Sciences
Xiaohua Huang: Nanjing Normal University
Zhenbiao Yang: Fujian Agriculture and Forestry University

Nature Communications, 2021, vol. 12, issue 1, 1-12

Abstract: Abstract Trivalent rare earth elements (REEs) are widely used in agriculture. Aerially applied REEs enter leaf epidermal cells by endocytosis and act systemically to improve the growth of the whole plant. The mechanistic basis of their systemic activity is unclear. Here, we show that treatment of Arabidopsis leaves with trivalent lanthanum [La(III)], a representative of REEs, triggers systemic endocytosis from leaves to roots. La(III)-induced systemic endocytosis requires AtrbohD-mediated reactive oxygen species production and jasmonic acid. Systemic endocytosis impacts the accumulation of mineral elements and the development of roots consistent with the growth promoting effects induced by aerially applied REEs. These findings provide insights into the mechanistic basis of REE activity in plants.

Date: 2021
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DOI: 10.1038/s41467-021-24379-z

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