Regulation of sulfate uptake and expression of sulfate transporter genes in Brassica oleracea as affected by atmospheric H(2)S and pedospheric sulfate nutrition

Plant Physiology
Peter BuchnerLuit J De Kok

Abstract

Demand-driven signaling will contribute to regulation of sulfur acquisition and distribution within the plant. To investigate the regulatory mechanisms pedospheric sulfate and atmospheric H(2)S supply were manipulated in Brassica oleracea. Sulfate deprivation of B. oleracea seedlings induced a rapid increase of the sulfate uptake capacity by the roots, accompanied by an increased expression of genes encoding specific sulfate transporters in roots and other plant parts. More prolonged sulfate deprivation resulted in an altered shoot-root partitioning of biomass in favor of the root. B. oleracea was able to utilize atmospheric H(2)S as S-source; however, root proliferation and increased sulfate transporter expression occurred as in S-deficient plants. It was evident that in B. oleracea there was a poor shoot to root signaling for the regulation of sulfate uptake and expression of the sulfate transporters. cDNAs corresponding to 12 different sulfate transporter genes representing the complete gene family were isolated from Brassica napus and B. oleracea species. The sequence analysis classified the Brassica sulfate transporter genes into four different groups. The expression of the different sulfate transporters showed a complex p...Continue Reading

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Citations

Apr 11, 2013·Mycorrhiza·Leonardo CasieriDaniel Wipf
Nov 25, 2005·Photosynthesis Research·Robert Hänsch, Ralf R Mendel
May 26, 2005·Plant Physiology and Biochemistry : PPB·Anja RiemenschneiderJutta Papenbrock
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Jul 26, 2015·Journal of Experimental Botany·Juan ChenHai-Lei Zheng
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