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231226s2022 xx |||||o 00| ||eng c |
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|a 10.1016/j.jplph.2022.153814
|2 doi
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|a pubmed24n1156.xml
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|a (DE-627)NLM346949114
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|a (NLM)36179398
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|a (PII)S0176-1617(22)00200-0
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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 Wu, Yang
|e verfasserin
|4 aut
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|a Photosynthetic carbon and nitrogen metabolism of Camellia oleifera Abel during acclimation to low light conditions
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|c 2022
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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 19.10.2022
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|a Date Revised 19.10.2022
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|a published: Print-Electronic
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|a Citation Status MEDLINE
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|a Copyright © 2022 Elsevier GmbH. All rights reserved.
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|a Tea-oil tree (Camellia oleifera Abel) is an important woody oil crop with high economic value. However, it has low photosynthetic production considering the low light intensity of its growth environment. To understand the acclimation mechanism of tea-oil trees to low light conditions, three light intensity treatments were conducted: high light (450-500 μmol. m-2. s-1), medium light (180-200 μmol. m-2. s-1), and low light (45-50 μmol. m-2. s-1). The carbon (C) and nitrogen (N) metabolism network were constructed by investigating the leaf anatomy, photosynthetic characteristics, N partitioning, transcriptome and metabolome. Results demonstrated that a larger proportion light energy was used for photochemical reactions in an environment with lower light intensity, which resulted in an increase in photosystem II photochemical efficiency and instantaneous light use efficiency (LUE) at the leaf level. As the light intensity increased, decreased electron transfer and carboxylation efficiencies, photorespiration and dark respiration rates, LUE at plant level, and N use efficiency (PNUE) were observed. Leaves trended to harvest more light using higher expression levels of light-harvesting protein genes, higher chlorophyll content, more granum and more tightly stacked granum lamella under lower light intensity. At transcriptional and metabolic levels, the TCA cycle, and the synthesis of starch and saccharides were weakened as light intensity decreased, while the Calvin cycle did not show the regularity between different treatments. Less N was distributed in Rubisco, respiration, and cell wall proteins as light decreased. Storage N was prominently accumulated in forms of amino acids (especially L-arginine) and amino acid derivatives as under medium and low light environments, to make up for C deficiency. Therefore, tea-oil trees actively improve light-harvesting capacity and enlarges the storage N pool to adapt to a low light environment, at the cost of a decrease of photosynthetic C assimilation and PNUE
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|a Journal Article
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|a Leaf nitrogen
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|a Metabolome
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|a Photosynthesis
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|a Photosynthetic nitrogen use efficiency
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|a Storage nitrogen
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|a Transcriptome
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|a Amino Acids
|2 NLM
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|a Photosystem II Protein Complex
|2 NLM
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|a Tea
|2 NLM
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|a Chlorophyll
|2 NLM
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|a 1406-65-1
|2 NLM
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|a Carbon
|2 NLM
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|a 7440-44-0
|2 NLM
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|a Starch
|2 NLM
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|a 9005-25-8
|2 NLM
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|a Arginine
|2 NLM
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|a 94ZLA3W45F
|2 NLM
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|a Ribulose-Bisphosphate Carboxylase
|2 NLM
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|a EC 4.1.1.39
|2 NLM
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|a Nitrogen
|2 NLM
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| 650 |
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|a N762921K75
|2 NLM
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| 700 |
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|a Ma, Lin
|e verfasserin
|4 aut
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|a Zhang, Lisha
|e verfasserin
|4 aut
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|a Zhang, Yan
|e verfasserin
|4 aut
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|a Zhou, Huiwen
|e verfasserin
|4 aut
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|a Wang, Yongjun
|e verfasserin
|4 aut
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| 700 |
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|a Liu, Yanan
|e verfasserin
|4 aut
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| 773 |
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|i Enthalten in
|t Journal of plant physiology
|d 1979
|g 278(2022) vom: 11. Nov., Seite 153814
|w (DE-627)NLM098174622
|x 1618-1328
|7 nnns
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| 773 |
1 |
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|g volume:278
|g year:2022
|g day:11
|g month:11
|g pages:153814
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|u http://dx.doi.org/10.1016/j.jplph.2022.153814
|3 Volltext
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