Arabidopsis Sucrose Transporter AtSUC1 is Important for Pollen Germination and Sucrose-induced Anthocyanin Accumulation

Overview

Journal Plant Physiol

Specialty Physiology

Date 2008 Mar 25

PMID 18359840

Citations 85

Authors

Alicia B Sivitz

Anke Reinders

John M Ward

Affiliations

Soon will be listed here.

Abstract

The Arabidopsis (Arabidopsis thaliana) sucrose transporter AtSUC1 (At1g71880) is highly expressed in pollen; however, its function has remained unknown. Here, we show that suc1 mutant pollen is defective in vivo, as evidenced by segregation distortion, and also has low rates of germination in vitro. AtSUC1-green fluorescent protein was localized to the plasma membrane in pollen tubes. AtSUC1 is also expressed in roots and external application of sucrose increased AtSUC1 expression in roots. AtSUC1 is important for sucrose-dependent signaling leading to anthocyanin accumulation in seedlings. suc1 mutants accumulated less anthocyanins in response to exogenous sucrose or maltose and microarray analysis revealed reduced expression of many genes important for anthocyanin biosynthesis. The results indicate that AtSUC1 is important for sugar signaling in vegetative tissue and for normal male gametophyte function.

Citing Articles

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Integrated Multi-Omics Analyses Reveal That Autophagy-Mediated Cellular Metabolism Is Required for the Initiation of Pollen Germination.

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How pollen tubes fight for food: the impact of sucrose carriers and invertases of on pollen development and pollen tube growth.

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