Arabidopsis sucrose transporter AtSUC1 is important for pollen germination and sucrose-induced anthocyanin accumulation

Alicia B. Sivitz, Anke Reinders, John M. Ward

Research output: Contribution to journalArticle

98 Citations (Scopus)

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.

Original languageEnglish (US)
Pages (from-to)92-100
Number of pages9
JournalPlant physiology
Volume147
Issue number1
DOIs
StatePublished - May 2008

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Anthocyanins
pollen germination
Germination
Pollen
Arabidopsis
Sucrose
transporters
anthocyanins
sucrose
pollen
Pollen Tube
segregation distortion
mutants
Maltose
Microarray Analysis
maltose
Green Fluorescent Proteins
pollen tubes
Seedlings
green fluorescent protein

Cite this

Arabidopsis sucrose transporter AtSUC1 is important for pollen germination and sucrose-induced anthocyanin accumulation. / Sivitz, Alicia B.; Reinders, Anke; Ward, John M.

In: Plant physiology, Vol. 147, No. 1, 05.2008, p. 92-100.

Research output: Contribution to journalArticle

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