Journal article

LEUNIG_HOMOLOG transcriptional co-repressor mediates aluminium sensitivity through PECTIN METHYLESTERASE46-modulated root cell wall pectin methylesterification in Arabidopsis

Xiaoyu Geng, Walter J Horst, John F Golz, Joanne E Lee, Zhaojun Ding, Zhong-Bao Yang

PLANT JOURNAL | WILEY | Published : 2017

Abstract

A major factor determining aluminium (Al) sensitivity in higher plants is the binding of Al to root cell walls. The Al binding capacity of cell walls is closely linked to the extent of pectin methylesterification, as the presence of methyl groups attached to the pectin backbone reduces the net negative charge of this polymer and hence limits Al binding. Despite recent progress in understanding the molecular basis of Al resistance in a wide range of plants, it is not well understood how the methylation status of pectin is mediated in response to Al stress. Here we show in Arabidopsis that mutants lacking the gene LEUNIG_HOMOLOG (LUH), a member of the Groucho-like family of transcriptional co-..

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University of Melbourne Researchers

Grants

Awarded by National Natural Science Foundation of China


Awarded by Shandong Provincial Natural Science Foundation project


Awarded by Ministry of Science and Technology of China


Awarded by Shandong Provincial Funds for Distinguished Young Scholars


Funding Acknowledgements

We thank NASC for providing mutant seeds. Z.-B.Y. is supported by the National Natural Science Foundation of China (31400227 and 31670259) and the Shandong Provincial Natural Science Foundation project (ZR2014CQ021). Z.D. is supported by grants from the Ministry of Science and Technology of China (2015CB942901), the National Natural Science Foundation of China (Projects 31270327, 31470371 and 31222005), Shandong Provincial Funds for Distinguished Young Scholars (2014JQ201408).