ArticleAnnals of botany2009
Arabidopsis plants harbouring a mutation in AtSUC2, encoding the predominant sucrose/proton symporter necessary for efficient phloem transport, are able to complete their life cycle and produce viable seed.
Article in Annals of botany, 2009. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 24 papers.
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Who cites it
24 citing papers in PubMed.
- Towards a Holistic View of the Orchestration Between Sugar Transporters in Cereal Crops.Plants (Basel, Switzerland) · 2026Article
- Genome-Wide Identification, Plasma Membrane Localization, and Functional Validation of the SUT Gene Family in Yam (International journal of molecular sciences · 2025Article
- The varying responses of leaves and roots and the link between sugar metabolic genes and the SWEET family in Dendrobium officinale under salt stress.BMC genomics · 2024Article
- Research progress and application strategies of sugar transport mechanisms in rice.Frontiers in plant science · 2024Review
- AtSWEET11 and AtSWEET12 transporters function in tandem to modulate sugar flux in plants.Plant direct · 2023Article
- Sucrose triggers a novel signaling cascade promoting Bacillus subtilis rhizosphere colonization.The ISME journal · 2021Article
- Phylogenetic relationships of sucrose transporters (SUTs) in plants and genome-wide characterization ofPeerJ · 2021Article
- The Role of Sugar Signaling in Regulating Plant Fatty Acid Synthesis.Frontiers in plant science · 2021Review
- Expression of a Bacterial Trehalose-6-phosphate Synthase otsA Increases Oil Accumulation in Plant Seeds and Vegetative Tissues.Frontiers in plant science · 2021Article
- Salinity Effects on Sugar Homeostasis and Vascular Anatomy in the Stem of theInternational journal of molecular sciences · 2019Article
- New insights into the evolution and functional divergence of the SWEET family in Saccharum based on comparative genomics.BMC plant biology · 2018Article
- Characterization of the cork formation and production transcriptome inPhysiology and molecular biology of plants : an international journal of functional plant biology · 2018Article
- Co-infection of Sweet Orange with Severe and Mild Strains ofFrontiers in plant science · 2017Article
- New Insights into Phloem Unloading and Expression of Sucrose Transporters in Vegetative Sinks of the Parasitic PlantFrontiers in plant science · 2016Article
- Genome-Wide Analysis and Expression Profiling of theFrontiers in plant science · 2016Article
- Article
- Symplastic phloem loading in poplar.Plant physiology · 2014Article
- Article
- Increased expression of a phloem membrane protein encoded by NHL26 alters phloem export and sugar partitioning in Arabidopsis.The Plant cell · 2013Article
- Structural and functional heterogeneity in phloem loading and transport.Frontiers in plant science · 2013Article
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6 authors.
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Abstract
BACKGROUND AND
aimsAtSUC2 encodes a sucrose/proton symporter that localizes throughout the collection and transport phloem and is necessary for efficient transport of sucrose from source to sink tissues in Arabidopsis thaliana. Plants harbouring homozygous AtSUC2 null alleles accumulate sugar, starch, and anthocyanin in mature leaves, have severely delayed development and stunted growth and, in previous studies, failed to complete their life cycle by producing viable seed.
methodsAn AtSUC2 allele with a T-DNA insertion in the second intron was analysed. Full-length transcript from this allele is not produced, and a truncated protein translated from sequences upstream of the insertion site did not catalyse sucrose uptake into yeast, supporting the contention that this is a null allele. Mutant plants were grown in a growth chamber with a diurnal light/dark cycle, and growth patterns recorded. KEY
resultsThis allele (SALK_038124, designated AtSUC2-4) has the hallmarks of previously described null alleles but, despite compromised carbon partitioning and growth, produces viable seeds. The onset of flowering was chronologically delayed but occurred at the same point in the plastochron index as wild type.
conclusionsAtSUC2 is important for phloem loading and is therefore fundamental to phloem transport and plant productivity, but plants can complete their life cycle and produce viable seed in its absence. Arabidopsis appears to have mechanisms for mobilizing reduced carbon from the phloem into developing seeds independent of AtSUC2.
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