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240108s2024 xx |||||o 00| ||eng c |
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|a 10.1016/j.plaphy.2023.108318
|2 doi
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|a eng
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|a Zheng, Zhi-Chao
|e verfasserin
|4 aut
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|a Citrus sinensis manganese tolerance
|b Insight from manganese-stimulated secretion of root exudates and rhizosphere alkalization
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|c 2024
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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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|a Date Completed 14.02.2024
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|a Date Revised 14.02.2024
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|a published: Print-Electronic
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|a Citation Status MEDLINE
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|a Copyright © 2023 Elsevier Masson SAS. All rights reserved.
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|a We used manganese (Mn)-tolerant 'Xuegan' (Citrus sinensis) seedlings as materials and examined the characterization of Mn uptake and Mn-activated-release of root exudates under hydroponic conditions. We observed that root and shoot Mn bioaccumulation factor (BCF) reduced with the increase of Mn supply, and that Mn transfer factor (Tf) reduced greatly as Mn supply increased from 0 to 500 μM, beyond which Tf slightly increased with increasing Mn supply, suggesting that Mn supply reduced the ability to absorb and accumulate Mn in roots and shoots, as well as root-to-shoot Mn translocation. Without Mn, roots alkalized the solution pH from 5.0 to above 6.2, while Mn supply reduced root-induced alkalization. As Mn supply increased from 0 to 2000 μM, the secretion of root total phenolics (TPs) increased, while the solution pH decreased. Mn supply did not alter the secretion of root total free amino acids, total soluble sugars, malate, and citrate. Mn-activated-release of TPs was inhibited by low temperature and anion channel inhibitors, but not by protein biosynthesis inhibitor. Using widely targeted metabolome, we detected 48 upregulated [35 upregulated phenolic compounds + 13 other secondary metabolites (SMs)] and three downregulated SMs, and 39 upregulated and eight downregulated primary metabolites (PMs). These findings suggested that reduced ability to absorb and accumulate Mn in roots and shoots and less root-to-shoot Mn translocation in Mn-toxic seedlings, rhizosphere alkalization, and Mn-activated-release of root exudates (especially phenolic compounds) contributed to the high Mn tolerance of C. sinensis seedlings
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|a Journal Article
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|a Citrus sinensis
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|a Manganese-tolerance
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|a Phenolic compounds
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|a Rhizosphere alkalization
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| 650 |
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|a Root-to-shoot manganese translocation
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| 650 |
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|a Manganese
|2 NLM
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| 650 |
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|a 42Z2K6ZL8P
|2 NLM
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| 700 |
1 |
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|a Chen, Huan-Huan
|e verfasserin
|4 aut
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| 700 |
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|a Yang, Hui
|e verfasserin
|4 aut
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| 700 |
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|a Shen, Qian
|e verfasserin
|4 aut
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| 700 |
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|a Chen, Xu-Feng
|e verfasserin
|4 aut
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| 700 |
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|a Huang, Wei-Lin
|e verfasserin
|4 aut
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| 700 |
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|a Yang, Lin-Tong
|e verfasserin
|4 aut
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| 700 |
1 |
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|a Guo, Jiuxin
|e verfasserin
|4 aut
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| 700 |
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|a Chen, Li-Song
|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 206(2024) vom: 12. Jan., Seite 108318
|w (DE-627)NLM098178261
|x 1873-2690
|7 nnns
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| 773 |
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|g volume:206
|g year:2024
|g day:12
|g month:01
|g pages:108318
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| 856 |
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|u http://dx.doi.org/10.1016/j.plaphy.2023.108318
|3 Volltext
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