Počet záznamů: 1
Unique features of regulation of sulfate assimilation in monocots
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SYSNO ASEP 0567423 Druh ASEP J - Článek v odborném periodiku Zařazení RIV J - Článek v odborném periodiku Poddruh J Článek ve WOS Název Unique features of regulation of sulfate assimilation in monocots Tvůrce(i) Karvansara, Parisa Rahimzadeh (MBU-M)
Kelly, C. (DE)
Krone, R. (DE)
Zenzen, I. (DE)
Ristova, D. (DE)
Silz, E. (DE)
Jobe, T. O. (DE)
Kopriva, S. (DE)Zdroj.dok. Journal of Experimental Botany. - : Oxford University Press - ISSN 0022-0957
Roč. 74, č. 1 (2023), s. 308-320Poč.str. 13 s. Jazyk dok. eng - angličtina Země vyd. US - Spojené státy americké Klíč. slova C-4 photosynthesis ; cysteine ; glutathione ; monocots ; plant nutrition ; regulation ; rice ; Setaria viridis ; sulfate assimilation Obor OECD Microbiology Způsob publikování Omezený přístup Institucionální podpora MBU-M - RVO:61388971 UT WOS 000878758800001 EID SCOPUS 85159950671 DOI 10.1093/jxb/erac402 Anotace Sulfate assimilation is an essential pathway of plant primary metabolism, regulated by the demand for reduced sulfur (S). The S-containing tripeptide glutathione (GSH) is the key signal for such regulation in Arabidopsis, but little is known about the conservation of these regulatory mechanisms beyond this model species. Using two model monocot species, C-3 rice (Oryza sativa) and C-4 Setaria viridis, and feeding of cysteine or GSH, we aimed to find out how conserved are the regulatory mechanisms described for Arabidopsis in these species. We showed that while in principle the regulation is similar, there are many species-specific differences. For example, thiols supplied by the roots are translocated to the shoots in rice but remain in the roots of Setaria. Cysteine and GSH concentrations are highly correlated in Setaria, but not in rice. In both rice and Setaria, GSH seems to be the signal for demand-driven regulation of sulfate assimilation. Unexpectedly, we observed cysteine oxidation to sulfate in both species, a reaction that does not occur in Arabidopsis. This reaction is dependent on sulfite oxidase, but the enzyme(s) releasing sulfite from cysteine still need to be identified. Altogether our data reveal a number of unique features in the regulation of S metabolism in the monocot species and indicate the need for using multiple taxonomically distinct models to better understand the control of nutrient homeostasis, which is important for generating low-input crop varieties. Pracoviště Mikrobiologický ústav Kontakt Eliška Spurná, eliska.spurna@biomed.cas.cz, Tel.: 241 062 231 Rok sběru 2024 Elektronická adresa https://academic.oup.com/jxb/article/74/1/308/6759457
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