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Literature summary extracted from

  • Lin, I.W.; Sosso, D.; Chen, L.Q.; Gase, K.; Kim, S.G.; Kessler, D.; Klinkenberg, P.M.; Gorder, M.K.; Hou, B.H.; Qu, X.Q.; Carter, C.J.; Baldwin, I.T.; Frommer, W.B.
    Nectar secretion requires sucrose phosphate synthases and the sugar transporter SWEET9 (2014), Nature, 508, 546-549.
    View publication on PubMed

Natural Substrates/ Products (Substrates)

EC Number Natural Substrates Organism Comment (Nat. Sub.) Natural Products Comment (Nat. Pro.) Rev. Reac.
2.4.1.14 UDP-glucose + D-fructose 6-phosphate Arabidopsis thaliana
-
 UDP + sucrose 6F-phosphate
-
 r
2.4.1.14 UDP-glucose + D-fructose 6-phosphate Nicotiana attenuata
-
 UDP + sucrose 6F-phosphate
-
 r
2.4.1.14 UDP-glucose + D-fructose 6-phosphate Brassica rapa subsp. pekinensis
-
 UDP + sucrose 6F-phosphate
-
 r

Organism

EC Number Organism UniProt Comment Textmining
2.4.1.14 Arabidopsis thaliana
-
 gene sps2
-
2.4.1.14 Arabidopsis thaliana Q94BT0 gene SPS1; gene SPS1
-
2.4.1.14 Brassica rapa subsp. pekinensis Q84XS4
-
-
2.4.1.14 Nicotiana attenuata
-
-
-

Source Tissue

EC Number Source Tissue Comment Organism Textmining
2.4.1.14 extrastaminal nectary
-
 Brassica rapa subsp. pekinensis
-
2.4.1.14 flower
-
 Arabidopsis thaliana
-
2.4.1.14 flower
-
 Nicotiana attenuata
-
2.4.1.14 flower
-
 Brassica rapa subsp. pekinensis
-
2.4.1.14 gynoecial nectary
-
 Nicotiana attenuata
-
2.4.1.14 nectary high expression level of genes SPS1F and SPS2F in maturing nectaries Arabidopsis thaliana
-
2.4.1.14 nectary parenchyma
-
 Arabidopsis thaliana
-
2.4.1.14 nectary parenchyma
-
 Nicotiana attenuata
-
2.4.1.14 nectary parenchyma
-
 Brassica rapa subsp. pekinensis
-

Substrates and Products (Substrate)

EC Number Substrates Comment Substrates Organism Products Comment (Products) Rev. Reac.
2.4.1.14 UDP-glucose + D-fructose 6-phosphate
-
 Arabidopsis thaliana UDP + sucrose 6F-phosphate
-
 r
2.4.1.14 UDP-glucose + D-fructose 6-phosphate
-
 Nicotiana attenuata UDP + sucrose 6F-phosphate
-
 r
2.4.1.14 UDP-glucose + D-fructose 6-phosphate
-
 Brassica rapa subsp. pekinensis UDP + sucrose 6F-phosphate
-
 r

Synonyms

EC Number Synonyms Comment Organism
2.4.1.14 SPS
-
 Arabidopsis thaliana
2.4.1.14 SPS
-
 Nicotiana attenuata
2.4.1.14 SPS
-
 Brassica rapa subsp. pekinensis

General Information

EC Number General Information Comment Organism
2.4.1.14 malfunction mutation of AtSWEET9 or nectary-expressed sucrose phosphate synthase genes leads to the loss of nectar secretion Arabidopsis thaliana
2.4.1.14 malfunction mutation of AtSWEET9 or nectary-expressed sucrose phosphate synthase genes leads to the loss of nectar secretion Nicotiana attenuata
2.4.1.14 malfunction mutation of AtSWEET9 or nectary-expressed sucrose phosphate synthase genes leads to the loss of nectar secretion Brassica rapa subsp. pekinensis
2.4.1.14 metabolism sucrose phosphate synthase is a key enzyme for sucrose biosynthesis Arabidopsis thaliana
2.4.1.14 metabolism sucrose phosphate synthase is a key enzyme for sucrose biosynthesis Nicotiana attenuata
2.4.1.14 metabolism sucrose phosphate synthase is a key enzyme for sucrose biosynthesis Brassica rapa subsp. pekinensis
2.4.1.14 physiological function the enzyme is highly expressed in nectaries and that their expression is also essential for nectar secretion. Sucrose is synthesized in the nectary parenchyma by the enzyme and subsequently secreted into the extracellular space via SWEET9,a nectary-specific sugar transporter.In the the extracellular, sucrose is hydrolysed by an apoplasmic invertase to produce a mixture of sucrose, glucose and fructose. SWEET9 is essential for nectar production and can function as an efflux transporter Arabidopsis thaliana
2.4.1.14 physiological function the enzyme is highly expressed in nectaries, the expression is essential for nectar secretion. Sucrose is synthesized in the nectary parenchyma by the enzyme and subsequently secreted into the extracellular space via SWEET9, a nectary-specific sugar transporter. In the extracellular, sucrose is hydrolysed by an apoplasmic invertase to produce a mixture of sucrose, glucose and fructose. SWEET9 is essential for nectar production and can function as an efflux transporter Arabidopsis thaliana
2.4.1.14 physiological function the enzyme is highly expressed in nectaries, the expression is essential for nectar secretion. Sucrose is synthesized in the nectary parenchyma by the enzyme and subsequently secreted into the extracellular space via SWEET9, a nectary-specific sugar transporter. In the extracellular, sucrose is hydrolysed by an apoplasmic invertase to produce a mixture of sucrose, glucose and fructose. SWEET9 is essential for nectar production and can function as an efflux transporter Nicotiana attenuata
2.4.1.14 physiological function the enzyme is highly expressed in nectaries, the expression is essential for nectar secretion. Sucrose is synthesized in the nectary parenchyma by the enzyme and subsequently secreted into the extracellular space via SWEET9, a nectary-specific sugar transporter. In the extracellular, sucrose is hydrolysed by an apoplasmic invertase to produce a mixture of sucrose, glucose and fructose. SWEET9 is essential for nectar production and can function as an efflux transporter Brassica rapa subsp. pekinensis