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20231227131915.0 |
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231226s2023 xx |||||o 00| ||eng c |
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|a 10.1016/j.plaphy.2023.108153
|2 doi
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|a pubmed24n1226.xml
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|a (DE-627)NLM364233680
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|a (NLM)37931558
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|a (PII)S0981-9428(23)00664-2
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|a DE-627
|b ger
|c DE-627
|e rakwb
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|a eng
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| 100 |
1 |
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|a Pi, Kai
|e verfasserin
|4 aut
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| 245 |
1 |
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|a Negative regulation of tobacco cold stress tolerance by NtPhyA
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|c 2023
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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 14.11.2023
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|a Date Revised 13.12.2023
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|a published: Print-Electronic
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|a Citation Status MEDLINE
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|a Copyright © 2023. Published by Elsevier Masson SAS.
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|a Cold stress is a non-biological stressor that adversely affects tobacco yield and leaf quality. Plant photoreceptor proteins, which function as dual light-temperature sensors, play a vital role in temperature changes, making them crucial for responses to non-biological stressors. However, the regulatory mechanisms of PhyA in tobacco remain poorly understood. Therefore, in this study, we aimed to clone the NtPhyA gene from tobacco and generate overexpression (OE-NtPhyA) and mutant (KO-NtPhyA) constructs of NtPhyA. By assessing the physiological and biochemical responses of the mutants under cold stress and performing transcriptome sequencing, we determined the signalling mechanism of NtPhyA under cold stress. Comparative analysis with wild-type (WT) NtPhyA revealed that KO-NtPhyA exhibited increased seed germination rates and reduced wilting under cold stress. In additional, the degree of damage to leaf cells, cell membranes, and stomatal structures was mitigated, and the levels of reactive oxygen species (ROS) were significantly decreased. Antioxidant enzyme activity, net photosynthetic rate, and Fv/Fm were significantly enhanced in KO-NtPhyA, whereas the opposite effects were observed in OE-NtPhyA. These findings indicate that KO-NtPhyA augments tobacco tolerance to cold stress, implying a negative regulatory role of NtPhyA in tobacco during cold stress. Transcriptome analysis revealed that NtPhyA governs the expression of a cascade of genes involved in the response to oxygen-containing compounds, hydrogen peroxide (H2O2), ROS, temperature stimuli, photosystem II oxygen-evolving complex assembly, water channel activity, calcium channel activity, and carbohydrate transport. Collectively, our findings indicate that NtPhyA activates downstream gene expression to enhance the resilience of tobacco to cold stress
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|a Journal Article
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|a Cold tolerance
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|a Knockout
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|a Nicotiana tabacum
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4 |
|a Phytochrome A
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|a Reactive Oxygen Species
|2 NLM
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|a Hydrogen Peroxide
|2 NLM
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|a BBX060AN9V
|2 NLM
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| 650 |
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|a Antioxidants
|2 NLM
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| 650 |
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7 |
|a Oxygen
|2 NLM
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| 650 |
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7 |
|a S88TT14065
|2 NLM
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| 650 |
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|a Plant Proteins
|2 NLM
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| 700 |
1 |
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|a Luo, Jiajun
|e verfasserin
|4 aut
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| 700 |
1 |
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|a Lu, Anbin
|e verfasserin
|4 aut
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| 700 |
1 |
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|a Chen, Gang
|e verfasserin
|4 aut
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| 700 |
1 |
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|a Long, Benshan
|e verfasserin
|4 aut
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| 700 |
1 |
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|a Zhang, Jingyao
|e verfasserin
|4 aut
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| 700 |
1 |
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|a Mo, Zejun
|e verfasserin
|4 aut
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| 700 |
1 |
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|a Duan, Lili
|e verfasserin
|4 aut
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| 700 |
1 |
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|a Liu, Renxiang
|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 204(2023) vom: 15. Nov., Seite 108153
|w (DE-627)NLM098178261
|x 1873-2690
|7 nnns
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| 773 |
1 |
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|g volume:204
|g year:2023
|g day:15
|g month:11
|g pages:108153
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| 856 |
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|u http://dx.doi.org/10.1016/j.plaphy.2023.108153
|3 Volltext
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|a AR
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|d 204
|j 2023
|b 15
|c 11
|h 108153
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