ArticlePlant molecular biology2002
Gene expression studies on developing kernels of maize sucrose synthase (SuSy) mutants show evidence for a third SuSy gene.
Article in Plant molecular biology, 2002. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 27 papers, 2 of them syntheses that pooled it.
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Who cites it
27 citing papers in PubMed, 2 syntheses or guidelines pooled it, 78 citations in OpenAlex.
- Identification and expression analysis of the sucrose synthase gene family in pomegranate (PeerJ · 2022Pooled it
- Pooled it
- ZmSK1 encodes a sucrose synthase essential for starch synthesis and endosperm development in maize.Plant molecular biology · 2026Article
- TaWUS-like-5D affects grain weight and filling by inhibiting the expression of sucrose and trehalose metabolism-related genes in wheat grain endosperm.Plant biotechnology journal · 2025Article
- Integrated metabolomic and transcriptomic analyses reveal that starch and sucrose metabolism regulate maize kernel hardness.Frontiers in plant science · 2025Article
- Sucrose synthase dynamics and its potential role in heat stress tolerance in cereals.Frontiers in plant science · 2025Review
- Genome-wide analysis of sucrose synthase family in soybean and their expression in response to abiotic stress and seed development.PloS one · 2022Article
- Transactivation of Sus1 and Sus2 by Opaque2 is an essential supplement to sucrose synthase-mediated endosperm filling in maize.Plant biotechnology journal · 2020Article
- Transcript profiling of sucrose synthase genes involved in sucrose metabolism among four carrot (Daucus carota L.) cultivars reveals distinct patterns.BMC plant biology · 2018Article
- Article
- Analyses of the sucrose synthase gene family in cotton: structure, phylogeny and expression patterns.BMC plant biology · 2012Article
- Expression patterns, activities and carbohydrate-metabolizing regulation of sucrose phosphate synthase, sucrose synthase and neutral invertase in pineapple fruit during development and ripening.International journal of molecular sciences · 2012Article
- Structure, expression profile and subcellular localisation of four different sucrose synthase genes from barley.Planta · 2011Article
- Identification and characterization of the duplicate rice sucrose synthase genes OsSUS5 and OsSUS7 which are associated with the plasma membrane.Molecules and cells · 2011Article
- The wheat (T. aestivum) sucrose synthase 2 gene (TaSus2) active in endosperm development is associated with yield traits.Functional & integrative genomics · 2011Article
- Cloning and characterization of a sucrose synthase-encoding gene from muskmelon.Molecular biology reports · 2010Article
- Spatial distribution of transcript changes in the maize primary root elongation zone at low water potential.BMC plant biology · 2008Article
- Transcriptional and metabolic adjustments in ADP-glucose pyrophosphorylase-deficient bt2 maize kernels.Plant physiology · 2008Article
- Localization of sucrose synthase in developing seed and siliques of Arabidopsis thaliana reveals diverse roles for SUS during development.Journal of experimental botany · 2008Article
- Effects of water-deficit stress on the transcriptomes of developing immature ear and tassel in maize.Plant cell reports · 2007Article
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Authors and funding
4 authors at 3 institutions in 1 country.
Funding
No grant is acknowledged in the PubMed record.
Abstract
Previous studies have identified two tissue- and cell-specific, yet functionally redundant, sucrose synthase (SuSy) genes, Sh1 and Sus1, which encode biochemically similar isozymes, SH1 and SUS1 (previously referred to as SS1 and SS2, respectively). Here we report evidence for a third SuSy gene in maize, Sus3, which is more similar to dicot than to monocot SuSys. RNA and/or protein blot analyses on developing kernels and other tissues show evidence of expression of Sus3, although at the lowest steady-state levels of the three SuSy gene products and without a unique pattern of tissue specificity. Immunoblots of sh1sus1-1 embryos that are either lacking or deficient for the embryo-specific SUS1 protein have shown a protein band which we attribute to the Sus3 gene, and may contribute to the residual enzyme activity seen in embryos of the double mutant. We also studied developing seeds of the double mutant sh1sus1-1, which is missing 99.5% of SuSy enzyme activity, for evidence of co-regulation of several genes of sugar metabolism. We found a significant reduction in the steady-state levels of Miniature-1 encoded cell wall invertase2, and Sucrose transporter (Sut) mRNAs in the double mutant, relative to the lineage-related sh1Sus1 and sh1Sus1 kernels. Down-regulation of the Mn1 gene was also reflected in significant reductions in cell wall invertase activity. Co-regulatory changes were not seen in the expression of Sucrose phosphate synthase, UDP-glucose pyrophosphorylase, and ADP-glucose pyrophosphorylase.
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