Differential accumulation of transcripts encoding sulfur assimilation enzymes upon sulfur and/or nitrogen deprivation in Arabidopsis thaliana.
Expression of nine genes encoding enzymes involved in the sulfur assimilation pathway was examined by RNA blot hybridization. Significantly increased levels of transcripts encoding ATP sulfurylase and APS reductase were apparent under sulfur deprivation. However, in the absence of nitrogen, their responsiveness to sulfur deprivation was markedly reduced. Results suggest that the sulfur assimilation pathway is regulated at the transcriptional level by both nitrogen and sulfur sources.
Yamaguchi
Y
Y
Research and Education Center for Genetic Information, Nara Institute of Science and Technology, Japan.
Nakamura
T
T
Harada
E
E
Koizumi
N
N
Sano
H
H
D003105:Colombia; D003624:Darkness; D017343:Genes, Plant / Q000235:genetics*; D008027:Light; D009584:Nitrogen / Q000172:deficiency*; D010088:Oxidoreductases / Q000096:biosynthesis* / Q000235:genetics; D050862:Oxidoreductases Acting on Sulfur Group Donors; D010946:Plants, Medicinal / Q000201:enzymology* / Q000235:genetics; D018749:RNA, Plant / Q000096:biosynthesis / Q000235:genetics; D013430:Sulfate Adenylyltransferase / Q000096:biosynthesis* / Q000235:genetics; D013455:Sulfur / Q000172:deficiency / Q000378:metabolism*; D014158:Transcription, Genetic
D018749:RNA, Plant; D013455:Sulfur; D010088:Oxidoreductases; D050862:Oxidoreductases Acting on Sulfur Group Donors; C019618:adenylylsulfate reductase; D013430:Sulfate Adenylyltransferase; D009584:Nitrogen