Biosynthesis of redox-active metabolites in response to iron deficiency in plants.
Biosynthesis of redox-active metabolites in response to iron deficiency in plants.
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DOI:
10.1038/s41589-018-0019-2
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发表时间:
2018-05
影响因子:
14.8
通讯作者:
Sattely ES
中科院分区:
文献类型:
--
作者:
Rajniak J;Giehl RFH;Chang E;Murgia I;von Wirén N;Sattely ES
Iron is an essential but poorly bioavailable nutrient due to its low solubility, especially in alkaline soils. Here, we describe the discovery of a novel redox-active catecholic metabolite, termed sideretin, which derives from the coumarin fraxetin, and is the primary molecule exuded by Arabidopsis thaliana roots in response to iron deficiency. We have identified two enzymes that complete the biosynthetic pathway of fraxetin and sideretin. Chemical characterization of fraxetin and sideretin, and biological assays with pathway mutants, suggest that these coumarins are critical for iron nutrition in A. thaliana. Further, we show that sideretin production occurs in eudicot species only distantly related to A. thaliana. Untargeted metabolomics of the root exudates of various eudicots revealed production of structurally diverse redox-active molecules in response to iron deficiency. Our results indicate that secretion of small-molecule reductants by roots may be a widespread and previously underappreciated component of reduction-based iron uptake.
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影响因子:
2.1
作者:
BROWN, JC;AMBLER, JE
通讯作者:
AMBLER, JE
DOI:
10.1074/jbc.m110.180026
发表时间:
2011-02-18
期刊:
The Journal of biological chemistry
影响因子:
--
作者:
Nozoye T;Nagasaka S;Kobayashi T;Takahashi M;Sato Y;Sato Y;Uozumi N;Nakanishi H;Nishizawa NK
通讯作者:
Nishizawa NK
影响因子:
56.9
作者:
Dinneny, Jose R.;Long, Terri A.;Benfey, Philip N.
通讯作者:
Benfey, Philip N.
影响因子:
7.2
作者:
Clough, SJ;Bent, AF
通讯作者:
Bent, AF
影响因子:
7.2
作者:
Murata, Y;Ma, JF;Iwashita, T
通讯作者:
Iwashita, T