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231225s2022 xx |||||o 00| ||eng c |
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|a 10.1016/j.plantsci.2021.111173
|2 doi
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|a pubmed24n1122.xml
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|a (DE-627)NLM336835825
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|a (NLM)35151456
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|a (PII)S0168-9452(21)00369-1
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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 Kućko, Agata
|e verfasserin
|4 aut
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|a The acceleration of yellow lupine flower abscission by jasmonates is accompanied by lipid-related events in abscission zone cells
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|c 2022
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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 15.02.2022
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|a Date Revised 15.02.2022
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|a published: Print-Electronic
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|a Citation Status MEDLINE
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|a Copyright © 2021 Elsevier B.V. All rights reserved.
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|a Yellow lupine is an economically important crop. This species has been used as a great model for abscission processes for several years due to extreme flower abortion, which takes place in the abscission zone (AZ). AZ activation involves modifications of cell walls, membranes, and cellular structure. In this paper, we applied physiological, molecular, biochemical, and instrumental methods to explore lipid-associated changes and the possible involvement of lipid-derived phytohormones - jasmonates (JAs) - in flower AZ activation. Our comprehensive analyses revealed that natural abscission is accompanied by the upregulation of peroxidase, which reflects a disruption of redox balance and/or lipids peroxidation in AZ cell membranes. Redox imbalance was confirmed by appearance of malondialdehyde. Lipid-related processes involved the specific localization and increased level and activity of lipase and LOX, enzymes associated with cell membrane rupture, and JA biosynthesis. Lipid-hydrolyzing phospholipase D, implicated previously in abscission, is also found in naturally active AZs. Observed changes are accompanied by the accumulation of jasmonates, both free jasmonic acid and its methyl ester. The JA derivative exhibited higher biological activity than the nonconjugated form. Overall, our study shed new light on the lipid and phytohormonal regulation of AZ functioning supporting a role of JAs during abscission-associated events
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|a Journal Article
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|a abscission zone
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|a flower abscission
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|a jasmonates
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|a lipase
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|a lipoxygenase
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|a methyl jasmonate
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|a Cyclopentanes
|2 NLM
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|a Oxylipins
|2 NLM
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| 650 |
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|a jasmonic acid
|2 NLM
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| 650 |
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|a 6RI5N05OWW
|2 NLM
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| 700 |
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|a de Dios Alché, Juan
|e verfasserin
|4 aut
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|a Tranbarger, Timothy John
|e verfasserin
|4 aut
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| 700 |
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|a Wilmowicz, Emilia
|e verfasserin
|4 aut
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| 773 |
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|i Enthalten in
|t Plant science : an international journal of experimental plant biology
|d 1985
|g 316(2022) vom: 01. März, Seite 111173
|w (DE-627)NLM098174193
|x 1873-2259
|7 nnns
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| 773 |
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|g volume:316
|g year:2022
|g day:01
|g month:03
|g pages:111173
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|u http://dx.doi.org/10.1016/j.plantsci.2021.111173
|3 Volltext
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