Arabidopsis thaliana sucrose phosphate synthase ( sps ) genes are expressed differentially in organs and tissues, and their transcription is regulated by osmotic stress

Sucrose phosphate synthase (SPS), sucrose synthase (SUS) and their products in the leaves of Miscanthus × giganteus and Zea mays at low temperature

“…It has been demonstrated for instance, that several maize SPS sequences were most strongly expressed in the leaves and less intensively in pollen and kernel, what was related to the reaction to different abiotic factors (Lutfiyya et al 2007). In turn, in the columella cells of Arabidopsis thaliana roots, SPS isoforms support sucrose synthesis and stimulate starch synthesis in this tissue and respond differentially to the osmotic stress (Solís-Guzmán et al 2017). In the source leaves of Nicotiana tabacum, the differential expression of three SPS isoforms revealed their involvement in the starch mobilization during the dark period (Chen et al 2005).…”

Increased activity of MdFRK2, a high-affinity fructokinase, leads to upregulation of sorbitol metabolism and downregulation of sucrose metabolism in apple leaves

“…In the mature green leaves of most plants, sucrose is the main end product of photosynthesis in mesophyll cells 4 . One key enzyme for sucrose synthesis is sucrose-phosphate synthase (SPS; EC 2.4.1.14) 5 , 6 . Sucrose can be converted to fructose and glucose by invertases (EC 3.2.1.26), including cell wall invertase (CWINV), neutral invertase (NINV), and vacuolar invertase (VINV) or to fructose and UDP-glucose (UDPG) by sucrose synthase (SUSY; EC 2.4.1.13) 4 .…”

Changes in the sucrose metabolism in apple fruit following postharvest acibenzolar‐S‐methyl treatment

“…found that SPS genes were divided into three groups in the dicotyledons. Further, in Arabidopsis thaliana , SPS enzymes were encoded by four SPS genes . Jiang et al .…”

“…Further, in Arabidopsis thaliana, SPS enzymes were encoded by four SPS genes. 34 Jiang et al 35 found seven members of SPS in apple fruit. Moreover, complicated transcriptional regulation of SPS and reversible phosphorylation of the SPS isoenzymes have been reported, 30 and these may explain the inhibition of SPS expression and the induction of the SPS activity in the ASM-treated apple fruit.…”