Cold acclimation improves photosynthesis by regulating the ascorbate–glutathione cycle in chloroplasts of Kandelia obovata

Liu, Weicheng; Zheng, Chunfang; Chen, Jinong; Qiu, Jianbiao; Huang, Zhipeng; Wang, Qi; Ye, Yong

doi:10.1007/s11676-018-0791-6

Cited by 26 publications

(15 citation statements)

References 39 publications

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“…The 1-MCP preserved a high content of antioxidants (ASA and GSH) and high activities of antioxidant enzymes (SOD, CAT, and APX) in chives stored at 20 • C which might have contributed to scavenging ROS (H 2 O 2 ), and maintained the cell structural integrity. The accumulation of ROS in plants during senescing can activate the enzymatic and non-enzymatic antioxidant system to scavenge ROS down to a safe range [35]. These results showed that 1-MCP treatment enhanced the antioxidant system during RT storage, thus, reduced ROS production.…”

Section: -Mcp Enhances Antioxidant Capacity and Delays Senescence In Postharvest Chivesmentioning

confidence: 86%

1-Methylcyclopropene Preserves the Quality of Chive (Allium schoenoprasum L.) by Enhancing Its Antioxidant Capacities and Organosulfur Profile during Storage

Dai

Lü

Yang

et al. 2021

Foods

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The quality, antioxidant capacities, and organosulfur profile of chives (Allium schoenoprasum L.) treated with 1-methylcyclopropene (1-MCP) during storage were investigated in this study. The 1-MCP treatment (100 μL/L, fumigation 12 h at 20 °C) effectively inhibited tissue respiration and H2O2 production, enhanced the ascorbic acid (ASA) and glutathione (GSH) content, and promoted the activity of antioxidant enzymes (superoxide dismutase SOD, Catalase CAT, and ascorbic peroxidase APX) during the 5-day storage period at 20 °C. The result further showed that the 1-MCP treatment inhibited chlorophyll degradation, alleviated cell membrane damage, and delayed the chive senescence, with the yellowing rate being reduced by 67.8% and 34.5% in the 1-MCP treated chives on days 4 and 5 of storage at 20 °C, respectively. The free amino acid content of the chive was not affected by the 1-MCP treatment at 20 °C. However, the senescence rate of the chive was not reduced by the 1-MCP treatment when stored at 3 °C. The liquid chromatography data further showed that the 1-MCP treatment induced a 15.3% and 13.9% increase in the isoalliin and total S-alk(en)ylcysteine sulfoxides (ACSOs) content of the chive on day 2 at 20 °C, respectively. Furthermore, there was a strong positive correlation between ACSOs content and CAT/APX activity, indicating that ACSOs probably played a key role in enhancing the antioxidant capacities of the chive during storage at 20 °C. Thus the study efficiently demonstrates that 1-methylcyclopropene preserves the quality of chive (Allium schoenoprasum L.) by enhancing its antioxidant capacities and organosulfur profile during storage.

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Section: -Mcp Enhances Antioxidant Capacity and Delays Senescence In Postharvest Chivesmentioning

confidence: 86%

1-Methylcyclopropene Preserves the Quality of Chive (Allium schoenoprasum L.) by Enhancing Its Antioxidant Capacities and Organosulfur Profile during Storage

Dai

Lü

Yang

et al. 2021

Foods

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“…In recent years, many studies have provided valuable insight into the physiological mechanisms ( Zheng et al, 2016 ; Liu et al, 2018 ; Wang et al, 2019 ) and molecular mechanisms ( Peng et al, 2015 ; Fei et al, 2021 ) underlying the response of K. obovata to low temperature. In our previous study, we cloned the AP2/EREBP transcription factor (TF) KcCBF3 and demonstrated that it might participate in the adaptation of K .…”

Section: Introductionmentioning

confidence: 99%

Genome-Wide Identification of WRKY Genes and Their Responses to Chilling Stress in Kandelia obovata

You

Zhao³

et al. 2022

Front. Genet.

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Background:Kandelia obovata, a dominant mangrove species, is widely distributed in tropical and subtropical areas. Low temperature is the major abiotic stress that seriously limits the survival and growth of mangroves. WRKY transcription factors (TFs) play vital roles in responses to biotic and abiotic stresses. However, genome-wide analysis of WRKY genes in K. obovata and their responses to chilling stress have not been reported.Methods: Bioinformatic analysis was used to identify and characterize the K. obovata WRKY (KoWRKY) gene family, RNA-seq and qRT–PCR analyses were employed to screen KoWRKYs that respond to chilling stress.Results: Sixty-four KoWRKYs were identified and they were unevenly distributed across all 18 K. obovata chromosomes. Many orthologous WRKY gene pairs were identified between Arabidopsis thaliana and K. obovata, showing high synteny between the two genomes. Segmental duplication events were found to be the major force driving the expansion for the KoWRKY gene family. Most of the KoWRKY genes contained several kinds of hormone- and stress-responsive cis-elements in their promoter. KoWRKY proteins belonged to three groups (I, II, III) according to their conserved WRKY domains and zinc-finger structure. Expression patterns derived from the RNA-seq and qRT–PCR analyses revealed that 9 KoWRKYs were significantly upregulated during chilling acclimation in the leaves. KEGG pathway enrichment analysis showed that the target genes of KoWRKYs were significantly involved in 11 pathways, and coexpression network analysis showed that 315 coexpressed pairs (KoWRKYs and mRNAs) were positively correlated.Conclusion: Sixty-four KoWRKYs from the K. obovata genome were identified, 9 of which exhibited chilling stress-induced expression patterns. These genes represent candidates for future functional analysis of KoWRKYs involved in chilling stress related signaling pathways in K. obovata. Our results provide a basis for further analysis of KoWRKY genes to determine their functions and molecular mechanisms in K. obovata in response to chilling stress.

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“…Chlorophyll fluorescence parameters were measured as previous description ( Yang et al, 2020 ) with a portable fluorometer DAUL-PAM-100 (Walz, Effeltrich, Germany) at 12:00. The relative parameters of F V / F M , Y(II) photosystem II (PSII), ETR, Y(NO), Y(NPQ), qN, qP, and qL were calculated and analyzed ( Liu et al, 2019 ).…”

Section: Methodsmentioning

confidence: 99%

Comparative Transcriptome Profiling Analysis Reveals the Adaptive Molecular Mechanism of Yellow-Green Leaf in Rosa beggeriana ‘Aurea’

et al. 2022

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Rosa beggeriana ‘Aurea’ is a yellow-green leaf (yl) mutant and originated from Rosa beggeriana Schrenk by 60Co-γ irradiation, which is an important ornamental woody species. However, the molecular mechanism of the yl mutant remains unknown. Herein, comparative transcriptome profiling was performed between the yl type and normal green color type (WT) by RNA sequencing. A total of 3,372 significantly differentially expressed genes (DEGs) were identified, consisting of 1,585 upregulated genes and 1,787 downregulated genes. Genes that took part in metabolic of biological process (1,090), membrane of cellular component (728), catalytic (1,114), and binding of molecular function (840) were significantly different in transcription level. DEGs involved in chlorophyll biosynthesis, carotenoids biosynthesis, cutin, suberine, wax biosynthesis, photosynthesis, chloroplast development, photosynthesis-antenna proteins, photosystem I (PSI) and photosystem II (PSII) components, CO2 fixation, ribosomal structure, and biogenesis related genes were downregulated. Meanwhile, linoleic acid metabolism, siroheme biosynthesis, and carbon source of pigments biosynthesis through methylerythritol 4-phosphate (MEP) pathways were upregulated. Moreover, a total of 147 putative transcription factors were signification different expression, involving NAC, WRKY, bHLH, MYB and AP2/ERF, C2H2, GRAS, and bZIP family gene. Our results showed that the disturbed pigments biosynthesis result in yl color by altering the ratio of chlorophylls and carotenoids in yl mutants. The yl mutants may evoke other metabolic pathways to compensate for the photodamage caused by the insufficient structure and function of chloroplasts, such as enhanced MEP pathways and linoleic acid metabolism against oxidative stress. This research can provide a reference for the application of leaf color mutants in the future.

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Cold acclimation improves photosynthesis by regulating the ascorbate–glutathione cycle in chloroplasts of Kandelia obovata

Cited by 26 publications

References 39 publications

1-Methylcyclopropene Preserves the Quality of Chive (Allium schoenoprasum L.) by Enhancing Its Antioxidant Capacities and Organosulfur Profile during Storage

1-Methylcyclopropene Preserves the Quality of Chive (Allium schoenoprasum L.) by Enhancing Its Antioxidant Capacities and Organosulfur Profile during Storage

Genome-Wide Identification of WRKY Genes and Their Responses to Chilling Stress in Kandelia obovata

Comparative Transcriptome Profiling Analysis Reveals the Adaptive Molecular Mechanism of Yellow-Green Leaf in Rosa beggeriana ‘Aurea’

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