Trehalose Metabolism Coordinates Transcriptional Regulatory Control and Metabolic Requirements to Trigger the Onset of Cassava Storage Root Initiation

Overview

Journal Sci Rep

Specialty Science

Date 2023 Nov 15

PMID 37968317

Authors

Nattavat Sukko

Saowalak Kalapanulak

Treenut Saithong

Affiliations

Soon will be listed here.

Abstract

Cassava storage roots (SR) are an important source of food energy and raw material for a wide range of applications. Understanding SR initiation and the associated regulation is critical to boosting tuber yield in cassava. Decades of transcriptome studies have identified key regulators relevant to SR formation, transcriptional regulation and sugar metabolism. However, there remain uncertainties over the roles of the regulators in modulating the onset of SR development owing to the limitation of the widely applied differential gene expression analysis. Here, we aimed to investigate the regulation underlying the transition from fibrous (FR) to SR based on Dynamic Network Biomarker (DNB) analysis. Gene expression analysis during cassava root initiation showed the transition period to SR happened in FR during 8 weeks after planting (FR8). Ninety-nine DNB genes associated with SR initiation and development were identified. Interestingly, the role of trehalose metabolism, especially trehalase1 (TRE1), in modulating metabolites abundance and coordinating regulatory signaling and carbon substrate availability via the connection of transcriptional regulation and sugar metabolism was highlighted. The results agree with the associated DNB characters of TRE1 reported in other transcriptome studies of cassava SR initiation and Attre1 loss of function in literature. The findings help fill the knowledge gap regarding the regulation underlying cassava SR initiation.

Citing Articles

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PMID: 39391775 PMC: 11464306. DOI: 10.3389/fpls.2024.1467432.

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