Click here to close
Hello! We notice that you are using Internet Explorer, which is not supported by Xenbase and may cause the site to display incorrectly.
We suggest using a current version of Chrome,
FireFox, or Safari.
Plant Cell
2015 Mar 01;273:607-19. doi: 10.1105/tpc.114.134585.
Show Gene links
Show Anatomy links
A cascade of sequentially expressed sucrose transporters in the seed coat and endosperm provides nutrition for the Arabidopsis embryo.
Chen LQ
,
Lin IW
,
Qu XQ
,
Sosso D
,
McFarlane HE
,
Londoño A
,
Samuels AL
,
Frommer WB
.
???displayArticle.abstract???
Developing plant embryos depend on nutrition from maternal tissues via the seed coat and endosperm, but the mechanisms that supply nutrients to plant embryos have remained elusive. Sucrose, the major transport form of carbohydrate in plants, is delivered via the phloem to the maternal seed coat and then secreted from the seed coat to feed the embryo. Here, we show that seed filling in Arabidopsis thaliana requires the three sucrose transporters SWEET11, 12, and 15. SWEET11, 12, and 15 exhibit specific spatiotemporal expression patterns in developing seeds, but only a sweet11;12;15 triple mutant showed severe seed defects, which include retarded embryo development, reduced seed weight, and reduced starch and lipid content, causing a "wrinkled" seed phenotype. In sweet11;12;15 triple mutants, starch accumulated in the seed coat but not the embryo, implicating SWEET-mediated sucrose efflux in the transfer of sugars from seed coat to embryo. This cascade of sequentially expressed SWEETs provides the feeding pathway for the plant embryo, an important feature for yield potential.
Andriotis,
Starch turnover in developing oilseed embryos.
2010, Pubmed
Andriotis,
Starch turnover in developing oilseed embryos.
2010,
Pubmed
Andriotis,
Altered starch turnover in the maternal plant has major effects on Arabidopsis fruit growth and seed composition.
2012,
Pubmed
Baud,
The AtSUC5 sucrose transporter specifically expressed in the endosperm is involved in early seed development in Arabidopsis.
2005,
Pubmed
Baud,
Multifunctional acetyl-CoA carboxylase 1 is essential for very long chain fatty acid elongation and embryo development in Arabidopsis.
2003,
Pubmed
Baumann,
Placental glucose transfer and fetal growth.
2002,
Pubmed
Belmonte,
Comprehensive developmental profiles of gene activity in regions and subregions of the Arabidopsis seed.
2013,
Pubmed
Berger,
Endosperm: an integrator of seed growth and development.
2006,
Pubmed
Cernac,
WRINKLED1 encodes an AP2/EREB domain protein involved in the control of storage compound biosynthesis in Arabidopsis.
2004,
Pubmed
Chen,
Sugar transporters for intercellular exchange and nutrition of pathogens.
2010,
Pubmed
,
Xenbase
Chen,
Sucrose efflux mediated by SWEET proteins as a key step for phloem transport.
2012,
Pubmed
Cohn,
Xanthomonas axonopodis virulence is promoted by a transcription activator-like effector-mediated induction of a SWEET sugar transporter in cassava.
2014,
Pubmed
Davis,
Protocol: Streamlined sub-protocols for floral-dip transformation and selection of transformants in Arabidopsis thaliana.
2009,
Pubmed
Dean,
Analysis of gene expression patterns during seed coat development in Arabidopsis.
2011,
Pubmed
Fallahi,
Localization of sucrose synthase in developing seed and siliques of Arabidopsis thaliana reveals diverse roles for SUS during development.
2008,
Pubmed
Focks,
wrinkled1: A novel, low-seed-oil mutant of Arabidopsis with a deficiency in the seed-specific regulation of carbohydrate metabolism.
1998,
Pubmed
Hill,
Metabolism of sugars in the endosperm of developing seeds of oilseed rape.
2003,
Pubmed
Illsley,
Glucose transporters in the human placenta.
2000,
Pubmed
Kasaras,
Expression, localisation and phylogeny of a novel family of plant-specific membrane proteins.
2010,
Pubmed
Kawashima,
The suspensor: not just suspending the embryo.
2010,
Pubmed
Kelly,
Seed storage oil mobilization is important but not essential for germination or seedling establishment in Arabidopsis.
2011,
Pubmed
Kevorkova,
Differential expression of glucose transporters in rabbit placenta: effect of hypercholesterolemia in dams.
2007,
Pubmed
Lalonde,
Transport mechanisms for organic forms of carbon and nitrogen between source and sink.
2004,
Pubmed
Lin,
Nectar secretion requires sucrose phosphate synthases and the sugar transporter SWEET9.
2014,
Pubmed
,
Xenbase
McFarlane,
Cortical microtubules mark the mucilage secretion domain of the plasma membrane in Arabidopsis seed coat cells.
2008,
Pubmed
Morley-Smith,
The transport of sugars to developing embryos is not via the bulk endosperm in oilseed rape seeds.
2008,
Pubmed
Nakagawa,
Development of series of gateway binary vectors, pGWBs, for realizing efficient construction of fusion genes for plant transformation.
2007,
Pubmed
Pommerrenig,
SUCROSE TRANSPORTER 5 supplies Arabidopsis embryos with biotin and affects triacylglycerol accumulation.
2013,
Pubmed
Quirino,
Diverse range of gene activity during Arabidopsis thaliana leaf senescence includes pathogen-independent induction of defense-related genes.
1999,
Pubmed
Rawsthorne,
Carbon flux and fatty acid synthesis in plants.
2002,
Pubmed
Ritchie,
Sugar retrieval by coats of developing seeds of Phaseolus vulgaris L. and Vicia faba L.
2003,
Pubmed
Sauer,
In vitro culture of Arabidopsis embryos.
2008,
Pubmed
Sauer,
AtSUC8 and AtSUC9 encode functional sucrose transporters, but the closely related AtSUC6 and AtSUC7 genes encode aberrant proteins in different Arabidopsis ecotypes.
2004,
Pubmed
Seo,
An Arabidopsis senescence-associated protein SAG29 regulates cell viability under high salinity.
2011,
Pubmed
Sivitz,
Arabidopsis sucrose transporter AtSUC9. High-affinity transport activity, intragenic control of expression, and early flowering mutant phenotype.
2007,
Pubmed
,
Xenbase
Stadler,
Cell-to-cell movement of green fluorescent protein reveals post-phloem transport in the outer integument and identifies symplastic domains in Arabidopsis seeds and embryos.
2005,
Pubmed
Streubel,
Five phylogenetically close rice SWEET genes confer TAL effector-mediated susceptibility to Xanthomonas oryzae pv. oryzae.
2013,
Pubmed
Theodoulou,
Seed storage oil catabolism: a story of give and take.
2012,
Pubmed
Werner,
A dual switch in phloem unloading during ovule development in Arabidopsis.
2011,
Pubmed
Western,
Differentiation of mucilage secretory cells of the Arabidopsis seed coat.
2000,
Pubmed
Xu,
Structures of bacterial homologues of SWEET transporters in two distinct conformations.
2014,
Pubmed
Yadegari,
Cell Differentiation and Morphogenesis Are Uncoupled in Arabidopsis raspberry Embryos.
1994,
Pubmed
Zhou,
A suite of sucrose transporters expressed in coats of developing legume seeds includes novel pH-independent facilitators.
2007,
Pubmed
van Dongen,
Electrodiffusional uptake of organic cations by pea seed coats. Further evidence for poorly selective pores in the plasma membrane of seed coat parenchyma cells.
2001,
Pubmed
