Interaction between carbon metabolism and phosphate accumulation is revealed by a mutation of a cellulose synthase-like protein, CSLF6

Journal of Experimental Botany
Cheng JinJie Luo

Abstract

Phosphorus is an essential macronutrient for plant growth and development. However, the network that affects phosphate (Pi) accumulation in crops is not well established. It is reported here that OsCSLF6, a member of the cellulose synthase-like family (CSLF), which is found only in grasses, is involved in Pi accumulation. The oscslf6 mutants (oscslf6-1 and oscslf6-2) display Pi toxic symptoms and increased Pi accumulation in both roots and shoots under the Pi-sufficient condition, which correlate with the induced expression of Pi transporters in the knockout mutants. Consistent with the over-accumulation of Pi, a significant decrease in primary root length, adventitious root length, and adventitious root number were observed in the oscslf6 mutants when compared with the wild type (WT) under Pi-sufficient conditions. In addition, the sucrose (Suc) level was increased in the oscslf6 mutants and the expression of sucrose synthases (OsSUS4/5) and sucrose transporters (OsSUT1/2/4/OsSweet14) genes were also induced in the shoots of oscslf6 mutants, suggesting that OsCSLF6 may play a role in affecting Pi accumulation by affecting the level of carbon metabolism.

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Citations

Sep 2, 2016·Frontiers in Plant Science·Marc SomssichStaffan Persson
Sep 12, 2018·International Journal of Molecular Sciences·Michael OgdenGhazanfar Abbas Khan
Oct 1, 2020·The Plant Journal : for Cell and Molecular Biology·Qi MengGuohua Xu
Feb 12, 2021·The Plant Journal : for Cell and Molecular Biology·Jianping LiuWeifeng Xu

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Methods Mentioned

BETA
sumoylation
transgenic
PCR
genotyping
light microscopy
scanning electron microscopy

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