Leaf nitrogen dioxide uptake coupling apoplastic chemistry, carbon/sulfur assimilation, and plant nitrogen status.

Plant Cell Reports
Yanbo Hu, Guangyu Sun

Abstract

Emission and plant uptake of atmospheric nitrogen oxides (NO + NO(2)) significantly influence regional climate change by regulating the oxidative chemistry of the lower atmosphere, species composition and the recycling of carbon and nutrients, etc. Plant uptake of nitrogen dioxide (NO(2)) is concentration-dependent and species-specific, and covaries with environmental factors. An important factor determining NO(2) influx into leaves is the replenishment of the substomatal cavity. The apoplastic chemistry of the substomatal cavity plays crucial roles in NO(2) deposition rates and the tolerance to NO(2), involving the reactions between NO(2) and apoplastic antioxidants, NO(2)-responsive germin-like proteins, apoplastic acidification, and nitrite-dependent NO synthesis, etc. Moreover, leaf apoplast is a favorable site for the colonization by microbes, which disturbs nitrogen metabolism of host plants. For most plant species, NO(2) assimilation in a leaf primarily depends on the nitrate (NO(3) (-)) assimilation pathway. NO(2)-N assimilation is coupled with carbon and sulfur (sulfate and SO(2)) assimilation as indicated by the mutual needs for metabolic intermediates (or metabolites) and the NO(2)-caused changes of key metabolic enz...Continue Reading

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Citations

Jul 16, 2015·Functional & Integrative Genomics·Ashis Roy Barman, Joydeep Banerjee
Oct 27, 2018·Environmental Science and Pollution Research International·Arideep Mukherjee, Madhoolika Agrawal
Feb 28, 2019·Plant Signaling & Behavior·Misa TakahashiHiromichi Morikawa
Oct 30, 2020·Frontiers in Plant Science·Jiangli ZhangChristian Lindermayr
Sep 23, 2020·Ecotoxicology and Environmental Safety·Yue-Hang SunLin Hao

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