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231225s2018 xx |||||o 00| ||eng c |
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|a 10.1016/j.plaphy.2018.07.031
|2 doi
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|a pubmed24n0957.xml
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|a (DE-627)NLM287174522
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|a (NLM)30077920
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|a (PII)S0981-9428(18)30331-0
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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 Parra-Almuna, Leyla
|e verfasserin
|4 aut
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|a Aluminium toxicity and phosphate deficiency activates antioxidant systems and up-regulates expression of phosphate transporters gene in ryegrass (Lolium perenne L.) plants
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|c 2018
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|a Text
|b txt
|2 rdacontent
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|a ƒaComputermedien
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|2 rdamedia
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|a ƒa Online-Ressource
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|2 rdacarrier
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|a Date Completed 22.10.2018
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|a Date Revised 30.09.2020
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|a published: Print-Electronic
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|a Citation Status MEDLINE
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|a Copyright © 2018 Elsevier Masson SAS. All rights reserved.
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|a Soil acidity, associated with aluminium (Al) toxicity and low phosphorus (P) availability, is considered the most important problem for agricultural production. Even though the Al-P interaction has been widely investigated, the impact of P-nutrition on Al-toxicity still remains controversial and poorly understood. To elucidate further insights into the underlying mechanisms of this interaction in ryegrass (Lolium perenne L.), P uptake, antioxidant responses and the gene expression of phosphate transporters were determined. Two ryegrass cultivars with different Al resistances, the Al-tolerant Nui cultivar and the Al-sensitive Expo cultivar were hydroponically grown under low (16 μM) and optimal (100 μM) P doses for 16 days. After P treatments, plants were exposed to Al doses (0 and 200 μM) under acidic conditions (pH 4.8) for 24 h. Al and P accumulation were higher in the roots of Nui than that of Expo. Moreover, lower Al accumulation was found in shoots of Nui independent of P supplies. Oxidative stress induced by Al-toxicity and P-deficiency was more severe in the Al-sensitive Expo. Expression levels of L. perenne phosphate transporters were higher in Nui than they were in Expo. While LpPHT1 expression was up-regulated by P deficiency and Al toxicity in both cultivars, LpPHT4 expression only increased in the Al-tolerant cultivar. This report shows that the higher Al-tolerance of Nui can be attributed to a greater antioxidant system under both P conditions. The observation of higher P and Al accumulation in roots of Nui might indicate that the Al-tolerance of Nui is a consequence of Al immobilization by P mediated by the high expression of phosphate transporters
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|a Journal Article
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|a Aluminium toxicity
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|a Antioxidant enzymes
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|a Phosphate deficiency
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|a Phosphate transporter genes
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|a Radical scavenging activity
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|a Antioxidants
|2 NLM
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|a Phosphate Transport Proteins
|2 NLM
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|a Phosphates
|2 NLM
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|a Hydrogen Peroxide
|2 NLM
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|a BBX060AN9V
|2 NLM
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|a Aluminum
|2 NLM
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|a CPD4NFA903
|2 NLM
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|a Peroxidase
|2 NLM
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|a EC 1.11.1.7
|2 NLM
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|a Superoxide Dismutase
|2 NLM
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|a EC 1.15.1.1
|2 NLM
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|a Diaz-Cortez, Andrea
|e verfasserin
|4 aut
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|a Ferrol, Nuria
|e verfasserin
|4 aut
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|a Mora, Maria de la Luz
|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 130(2018) vom: 01. Sept., Seite 445-454
|w (DE-627)NLM098178261
|x 1873-2690
|7 nnns
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|g volume:130
|g year:2018
|g day:01
|g month:09
|g pages:445-454
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|u http://dx.doi.org/10.1016/j.plaphy.2018.07.031
|3 Volltext
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|d 130
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