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231225s2020 xx |||||o 00| ||eng c |
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|a 10.1016/j.plaphy.2020.06.028
|2 doi
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|a pubmed25n1049.xml
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|a (DE-627)NLM314846964
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|a (NLM)32912492
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|a (PII)S0981-9428(20)30309-0
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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 López-Orenes, Antonio
|e verfasserin
|4 aut
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| 245 |
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|a OPDA and ABA accumulation in Pb-stressed Zygophyllum fabago can be primed by salicylic acid and coincides with organ-specific differences in accumulation of phenolics
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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 18.11.2020
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|a Date Revised 18.11.2020
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|a published: Print-Electronic
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|a Citation Status MEDLINE
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|a Copyright © 2020 Elsevier Masson SAS. All rights reserved.
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|a Salicylic acid (SA) is a well-known priming agent that is widely used to protect plants against stressing agents, including heavy metals as Pb. A better understanding of the mechanisms that enable plants to counteract Pb toxicity would help to select strategies for land reclamation programs. Here we used a metallicolous population of Zygophyllum fabago to assess the extent to which SA pretreatment modulates Pb-induced changes in phenol metabolism and stress-related phytohormone levels in roots and leaves. Our data revealed that accumulation of different phytohormones, lignin, soluble and wall-bound phenolics as well as peroxidase (PRX) activity in Pb-stressed plants differed after SA-pretreatment. Exposure to Pb led to the induction of soluble and cell wall-bound PRX activities, particularly those involved in the oxidation of coniferyl alcohol and ferulic acid, while pretreatment with SA reduced the Pb-induced stimulation of PRX activities in roots but increased them in leaves. SA-treatment by itself induced accumulation of ABA and the JA-precursor 12-oxo-phytodienoic acid (OPDA) in the roots. Pb in turn inhibited these SA-induced effects with the exception of OPDA accumulation that was primed by the pretreatment. The SA treatment also induced accumulation of OPDA in leaves but suppressed the accumulation of JA-Ile although with relatively small absolute changes. Notably, Pb-induced accumulation of ABA was primed in the leaves of SA-pretreated plants. Together our data suggest that priming of OPDA accumulation in the roots and of ABA in the leaves by SA-pretreatment may play important regulatory roles, possibly via regulating PRX activities, for Pb stress in plants
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|a Journal Article
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|a Lead stress
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|a Phenol metabolism
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|a Priming
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|a Salicylic acid
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|a Stress-related phytohormones
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|a Zygophyllum fabago
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|a Fatty Acids, Unsaturated
|2 NLM
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| 650 |
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|a Phenols
|2 NLM
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| 650 |
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|a Plant Growth Regulators
|2 NLM
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| 650 |
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|a Lead
|2 NLM
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| 650 |
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|a 2P299V784P
|2 NLM
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| 650 |
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|a 12-oxophytodienoic acid
|2 NLM
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| 650 |
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|a 67204-66-4
|2 NLM
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| 650 |
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|a Abscisic Acid
|2 NLM
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| 650 |
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|a 72S9A8J5GW
|2 NLM
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| 650 |
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|a Salicylic Acid
|2 NLM
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| 650 |
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|a O414PZ4LPZ
|2 NLM
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| 700 |
1 |
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|a Alba, Juan M
|e verfasserin
|4 aut
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| 700 |
1 |
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|a Kant, Merijn R
|e verfasserin
|4 aut
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| 700 |
1 |
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|a Calderón, Antonio A
|e verfasserin
|4 aut
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| 700 |
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|a Ferrer, María A
|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 154(2020) vom: 15. Sept., Seite 612-621
|w (DE-627)NLM098178261
|x 1873-2690
|7 nnas
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| 773 |
1 |
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|g volume:154
|g year:2020
|g day:15
|g month:09
|g pages:612-621
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|u http://dx.doi.org/10.1016/j.plaphy.2020.06.028
|3 Volltext
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|d 154
|j 2020
|b 15
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|h 612-621
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