Transcriptional and physiological changes in the S assimilation pathway due to single or combined S and Fe deprivation in durum wheat (Triticum durum L.) seedlings

The effect of iron (Fe) and sulphur (S) deprivation on sulphate uptake and assimilation pathways was investigated in durum wheat by analysing the expression of genes coding for major transporters and enzymes involved in sulphate assimilation and reduction: high-affinity sulphate transporters (TdSult...

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Veröffentlicht in:Journal of experimental botany. - 1985. - 64(2013), 6 vom: 14. Apr., Seite 1663-75
1. Verfasser: Ciaffi, Mario (VerfasserIn)
Weitere Verfasser: Paolacci, Anna Rita, Celletti, Silvia, Catarcione, Giulio, Kopriva, Stanislav, Astolfi, Stefania
Format: Online-Aufsatz
Sprache:English
Veröffentlicht: 2013
Zugriff auf das übergeordnete Werk:Journal of experimental botany
Schlagworte:Journal Article Research Support, Non-U.S. Gov't Plant Proteins RNA, Messenger RNA, Plant Sulfates Sulfur 70FD1KFU70 Iron E1UOL152H7 mehr... Oxidoreductases Acting on Sulfur Group Donors EC 1.8.- adenylylsulfate reductase EC 1.8.99.2 Serine O-Acetyltransferase EC 2.3.1.30 Sulfate Adenylyltransferase EC 2.7.7.4
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100 1 |a Ciaffi, Mario  |e verfasserin  |4 aut 
245 1 0 |a Transcriptional and physiological changes in the S assimilation pathway due to single or combined S and Fe deprivation in durum wheat (Triticum durum L.) seedlings 
264 1 |c 2013 
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520 |a The effect of iron (Fe) and sulphur (S) deprivation on sulphate uptake and assimilation pathways was investigated in durum wheat by analysing the expression of genes coding for major transporters and enzymes involved in sulphate assimilation and reduction: high-affinity sulphate transporters (TdSultr1.1 and TdSultr1.3), ATP sulphurylase (TdATPSul1 and TdATPSul2), APS reductase (TdAPR), sulphite reductase (TdSiR), O-acetylserine(thiol)lyase (TdOASTL1 and TdOASTL2), and serine acetyltransferase (TdSAT1 and TdSAT2). Further experiments were carried out to detect changes in the activities of these enzymes, together with the evaluation of growth parameters (fresh biomass accumulation, leaf green values, and total S, thiol, and Fe concentrations). Fe shortage in wheat plants under adequate S nutrition resulted in an S deficiency-like response. Most of the genes of the S assimilatory pathway induced by S deprivation (TdATPSul1, TdAPR, TdSir, TdSAT1, and TdSAT2) were also significantly up-regulated after the imposition of the Fe limitation under S-sufficient conditions. However, the differential expression of genes encoding the two high-affinity transporters (TdSultr1.1 and TdSultr1.3) indicates that the mechanisms of sulphate uptake regulation under Fe and S deficiency are different in wheat. Moreover, it was observed that the mRNA level of genes encoding ATPS, APR, and OASTL and the corresponding enzyme activities were often uncoupled in response to Fe and S availability, indicating that most probably their regulation involves a complex interplay of transcriptional, translational, and/or post-translational mechanisms induced by S and/or Fe deficiency 
650 4 |a Journal Article 
650 4 |a Research Support, Non-U.S. Gov't 
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650 7 |a RNA, Messenger  |2 NLM 
650 7 |a RNA, Plant  |2 NLM 
650 7 |a Sulfates  |2 NLM 
650 7 |a Sulfur  |2 NLM 
650 7 |a 70FD1KFU70  |2 NLM 
650 7 |a Iron  |2 NLM 
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650 7 |a Oxidoreductases Acting on Sulfur Group Donors  |2 NLM 
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650 7 |a adenylylsulfate reductase  |2 NLM 
650 7 |a EC 1.8.99.2  |2 NLM 
650 7 |a Serine O-Acetyltransferase  |2 NLM 
650 7 |a EC 2.3.1.30  |2 NLM 
650 7 |a Sulfate Adenylyltransferase  |2 NLM 
650 7 |a EC 2.7.7.4  |2 NLM 
700 1 |a Paolacci, Anna Rita  |e verfasserin  |4 aut 
700 1 |a Celletti, Silvia  |e verfasserin  |4 aut 
700 1 |a Catarcione, Giulio  |e verfasserin  |4 aut 
700 1 |a Kopriva, Stanislav  |e verfasserin  |4 aut 
700 1 |a Astolfi, Stefania  |e verfasserin  |4 aut 
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