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Multi-omics approaches explain the growth-promoting effect of the apocarotenoid growth regulator zaxinone in rice.

Authors :
Wang, Jian You
Alseekh, Saleh
Xiao, Tingting
Ablazov, Abdugaffor
Perez de Souza, Leonardo
Fiorilli, Valentina
Anggarani, Marita
Lin, Pei-Yu
Votta, Cristina
Novero, Mara
Jamil, Muhammad
Lanfranco, Luisa
Hsing, Yue-Ie C.
Blilou, Ikram
Fernie, Alisdair R.
Al-Babili, Salim
Source :
Communications Biology. 10/25/2021, Vol. 4 Issue 1, p1-11. 11p.
Publication Year :
2021

Abstract

The apocarotenoid zaxinone promotes growth and suppresses strigolactone biosynthesis in rice. To shed light on the mechanisms underlying its growth-promoting effect, we employed a combined omics approach integrating transcriptomics and metabolomics analysis of rice seedlings treated with zaxinone, and determined the resulting changes at the cellular and hormonal levels. Metabolites as well as transcripts analysis demonstrate that zaxinone application increased sugar content and triggered glycolysis, the tricarboxylic acid cycle and other sugar-related metabolic processes in rice roots. In addition, zaxinone treatment led to an increased root starch content and induced glycosylation of cytokinins. The transcriptomic, metabolic and hormonal changes were accompanied by striking alterations of roots at cellular level, which showed an increase in apex length, diameter, and the number of cells and cortex cell layers. Remarkably, zaxinone did not affect the metabolism of roots in a strigolactone deficient mutant, suggesting an essential role of strigolactone in the zaxinone growth-promoting activity. Taken together, our results unravel zaxinone as a global regulator of the transcriptome and metabolome, as well as of hormonal and cellular composition of rice roots. Moreover, they suggest that zaxinone promotes rice growth most likely by increasing sugar uptake and metabolism, and reinforce the potential of this compound in increasing rice performance. Wang et al. report zaxinone as a global regulator of the transcriptome and metabolome, as well as of hormonal and cellular composition of rice roots. This study shows that zaxinone promotes rice growth by enhancing root sugar uptake and metabolism and modulation of cytokinin content, indicating the potential application of this compound in increasing rice performance. [ABSTRACT FROM AUTHOR]

Details

Language :
English
ISSN :
23993642
Volume :
4
Issue :
1
Database :
Academic Search Index
Journal :
Communications Biology
Publication Type :
Academic Journal
Accession number :
153206405
Full Text :
https://doi.org/10.1038/s42003-021-02740-8