Sugar-induced plant growth is dependent on brassinosteroids

Plant Signaling & Behavior
Yongqiang Zhang, Jun-Xian He

Abstract

Sugars, the end products of photosynthesis, not only fuel growth and development of plants as carbon and energy sources, but also function as signaling molecules to modulate a range of important processes during plant growth and development. We recently found that sugar can promote hypocotyl elongation in Arabidopsis in darkness and this is largely dependent on brassinosteroids (BRs), a group of essential phytohormones involved in mediation of plant cell elongation. Sugars not only positively regulate the transcription of BZR1, the gene encoding the BR-activated transcription factor BRASSINAZOLE RESISTANT1 (BRZ1), but also stabilize the BZR1 protein. Based on these results, we proposed that BZR1 may act as a converging node for crosstalk between BR and sugar signaling in regulating plant growth in darkness. In this short communication, we present some new data showing that HEXOKINASE1 (HXK1), the first identified glucose (Glc) sensor in plants, was positively involved in Glc promotion of hypocotyl elongation in Arabidopsis in the dark. It appears that the function of HXK1 is dependent on the presence of BR, suggesting that BR may act downstream of HXK1 to positively regulate Glc-induced hypocotyl elongation in Arabidopsis in da...Continue Reading

References

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Citations

May 18, 2016·Plant Science : an International Journal of Experimental Plant Biology·Christina Kühn
Apr 28, 2017·Plant & Cell Physiology·G Paulina Aguilera-Alvarado, Sobeida Sánchez-Nieto
Jan 9, 2019·Plant, Cell & Environment·Jun SakaguchiYuichiro Watanabe
Jan 15, 2020·Plant Signaling & Behavior·Franziska HanschChristina Kühn
Aug 29, 2018·International Journal of Molecular Sciences·Soulaiman SakrRossitza Atanassova
Feb 11, 2020·Frontiers in Plant Science·Damiano MartignagoAna I Caño-Delgado
Jul 28, 2020·International Journal of Molecular Sciences·Damian GruszkaAnna Janeczko
Jul 20, 2019·Biomolecules·Anket SharmaBingsong Zheng
Dec 8, 2019·Carbohydrate Research·Husna SiddiquiShamsul Hayat

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Methods Mentioned

BETA
2-hybrid

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