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231225s2020 xx |||||o 00| ||eng c |
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|a 10.1016/j.plaphy.2020.03.014
|2 doi
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|a pubmed24n1026.xml
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|a (DE-627)NLM308065794
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|a (NLM)32220787
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|a (PII)S0981-9428(20)30121-2
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|a DE-627
|b ger
|c DE-627
|e rakwb
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|a eng
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|a Oliveira de Araujo, Talita
|e verfasserin
|4 aut
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|a Paspalum urvillei and Setaria parviflora, two grasses naturally adapted to extreme iron-rich environments
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|c 2020
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|a Text
|b txt
|2 rdacontent
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|a ƒaComputermedien
|b c
|2 rdamedia
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|a ƒa Online-Ressource
|b cr
|2 rdacarrier
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|a Date Completed 04.09.2020
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|a Date Revised 26.06.2022
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|a published: Print-Electronic
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|a CommentIn: Plant Physiol Biochem. 2021 May;162:137-138. - PMID 33677225
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|a Citation Status MEDLINE
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|a Copyright © 2020 The Authors. Published by Elsevier Masson SAS.. All rights reserved.
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|a Paspalum urvillei and Setaria parviflora are two plant species naturally adapted to iron-rich environments such as around iron mines wastes. The aim of our work was to characterize how these two species cope with these extreme conditions by comparing them with related model species, Oryza sativa and Setaria viridis, that appeared to be much less tolerant to Fe excess. Both Paspalum urvillei and Setaria parviflora were able to limit the amount of Fe accumulated within roots and shoots, compared to the less tolerant species. Perls/DAB staining of Fe in root cross sections indicated that Paspalum urvillei and Setaria parviflora responded through the build-up of the iron plaque (IP), suggesting a role of this structure in the limitation of Fe uptake. Synchrotron μXRF analyses showed the presence of phosphorus, calcium, silicon and sulfur on IP of Paspalum urvillei roots and μXANES analyses identified Fe oxyhydroxide (ferrihydrite) as the main Fe form. Once within roots, high concentrations of Fe were localized in the cell walls and vacuoles of Paspalum urvillei, Setaria parviflora and O. sativa whereas Setaria viridis accumulated Fe in ferritins. The Fe forms translocated to the shoots of Setaria parviflora were identified as tri-iron complexes with citrate and malate. In leaves, all species accumulated Fe in the vacuoles of bundle sheath cells and as ferritin complexes in plastids. Taken together, our results strongly suggest that Paspalum urvillei and Setaria parviflora set up mechanisms of Fe exclusion in roots and shoots to limit the toxicity induced by Fe excess
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|a Journal Article
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|a Chloroplast
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|a Citrate
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|a Ferritin
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|a Iron plaque
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|a Malate
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|a Oryza sativa
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|a Paspalum urvillei
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|a Perls-DAB method
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|a Setaria parviflora
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|a Setaria viridis
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|a Vacuole
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|a μXANES
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|a μXRF
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|a Soil
|2 NLM
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|a Iron
|2 NLM
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|a E1UOL152H7
|2 NLM
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|a Isaure, Marie-Pierre
|e verfasserin
|4 aut
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|a Alchoubassi, Ghaya
|e verfasserin
|4 aut
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|a Bierla, Katarzyna
|e verfasserin
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|a Szpunar, Joanna
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|a Trcera, Nicolas
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|a Chay, Sandrine
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|a Alcon, Carine
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|a Campos da Silva, Luzimar
|e verfasserin
|4 aut
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|a Curie, Catherine
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|a Mari, Stephane
|e verfasserin
|4 aut
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| 773 |
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|i Enthalten in
|t Plant physiology and biochemistry : PPB
|d 1991
|g 151(2020) vom: 19. Juni, Seite 144-156
|w (DE-627)NLM098178261
|x 1873-2690
|7 nnns
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|g volume:151
|g year:2020
|g day:19
|g month:06
|g pages:144-156
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|u http://dx.doi.org/10.1016/j.plaphy.2020.03.014
|3 Volltext
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