Characteristics and Differences of Polyphenol Oxidase, Peroxidase Activities and Polyphenol Content in Different Potato (Solanum Tuberosum) Tubers

Wang, L.; Wang, W. X.; Zeng, Lanting; Suo, Haicui; Li, C.C.; Shan, Jianwei; Liu, J.T.; Luo, Huiting; Li, X.B.; Xiong, Xiao-ping

doi:10.15666/aeer/1806_81718187

Cited by 5 publications

(2 citation statements)

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“…In this study, PPO activity was significantly higher in T4 (MeJA treatment alone) than in CK, indicating that exogenous MeJA could markedly increase the PPO activity, which is consistent with the study of Zhou et al [ 61 ]. According to Wang Li et al, the potato PPO gene family members StuPPO1 , StuPPO2 , StuPPO3 , StuPPO6 , StuPPO8 , and StuPPO9 contain MeJA-responsive elements [ 62 ]. Therefore, it is speculated that PPO may be involved in the regulation of phenolic synthesis in response to MeJA, and low-temperature stress could inhibit the PPO activity.…”

Section: Discussionmentioning

confidence: 99%

CsMYB Transcription Factors Participate in Jasmonic Acid Signal Transduction in Response to Cold Stress in Tea Plant (Camellia sinensis)

Han

Zhang

et al. 2022

Plants

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Low-temperature stress is an increasing problem for the cultivation of tea (Camellia sinensis), with adverse effects on plant growth and development and subsequent negative impacts on the tea industry. Methyl jasmonate (MeJA), as a plant inducer, can improve the cold-stress tolerance in tea plants. R2R3-MYB transcription factors (TFs) are considered potentially important regulators in the resistance to cold stress in plants. However, the molecular mechanisms, by which MYB TFs via the jasmonic acid pathway respond to cold stress in the tea plant, remain unknown. In this study, physiological and biochemical assays showed that exogenous MeJA application could effectively promote ROS scavenging in the tea plant under cold stress, maintaining the stability of the cell membrane. Sixteen R2R3-MYB TFs genes were identified from the tea plant genome database. Quantitative RT-PCR analysis showed that three CsMYB genes were strongly induced under a combination of MeJA and cold-stress treatment. Subcellular localization assays suggest CsMYB45, CsMYB46, and CsMYB105 localized in the nucleus. Exogenous MeJA treatment enhanced the overexpression of CsMYB45, CsMYB46, and CsMYB105 in E. coli and improved the growth and survival rates of recombinant cells compared to an empty vector under cold stress. Yeast two-hybrid and bimolecular fluorescence complementation experiments confirmed that CsMYB46 and CsMYB105 interacted with CsJAZ3, CsJAZ10, and CsJAZ11 in the nucleus. Taken together, these results highlight that CsMYB45, CsMYB46, and CsMYB105 are not only key components in the cold-stress signal response pathway but also may serve as points of confluence for cold stress and JA signaling pathways. Furthermore, our findings provide new insight into how MYB TFs influence cold tolerance via the jasmonic acid pathway in tea and provide candidate genes for future functional studies and breeding.

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Section: Discussionmentioning

confidence: 99%

CsMYB Transcription Factors Participate in Jasmonic Acid Signal Transduction in Response to Cold Stress in Tea Plant (Camellia sinensis)

Han

Zhang

et al. 2022

Plants

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“…PPO activity is a crucial indicator for assessing the extent of browning. Additionally, PPO functions as a terminal oxidase system in plant tissue respiration, influencing dormancy and sprouting in tubers [31]. Within 15 days of storage, the binding of PPO to the inner vesicle membrane may be compromised, leading to PPO activation [32].…”

Section: Impact Of Menthol Treatment On Browning Index Total Phenol C...mentioning

confidence: 99%

Effect of Menthol Treatment on the Sprouting and Quality of Potato Tuber

Xu,

Qin,

Hou

et al. 2024

Preprint

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This study used Dutch potatoes at the end of dormancy as the material to explore the impact of menthol (0.2 and 0.5 g/kg based on potato mass) treatment on sprouting inhibition and potato quality. The findings revealed that a menthol concentration of 0.5 g/kg effectively inhibited potato tuber sprouting and significantly reduced glucoside alkaloids production. After a storage period of 15 days, the sprouting percentage and glucoside alkaloids content of potatoes treated with 0.5 g/kg menthol were observed to be significantly lower at 4.17% and 68.63 mg/kg, respectively, compared to the control group which exhibited values of 100% and 282.01 mg/kg, respectively (P < 0.05). Throughout the storage period, 0.5 g/kg of menthol promoted respiration, reduced malondialdehyde production in potatoes, inhibited polyphenol oxidase activity, and slowed down tissue browning. Additionally, it mitigated the decline in starch and soluble protein content, inhibiting the accumulation of reducing sugars.

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Tea Tree Oil Microcapsules Inhibit Germination and Improve Postharvest Potato Tuber Quality

Ni,

Wu,

Tian

et al. 2023

Preprint

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Characteristics and Differences of Polyphenol Oxidase, Peroxidase Activities and Polyphenol Content in Different Potato (Solanum Tuberosum) Tubers

Cited by 5 publications

References 0 publications

CsMYB Transcription Factors Participate in Jasmonic Acid Signal Transduction in Response to Cold Stress in Tea Plant (Camellia sinensis)

CsMYB Transcription Factors Participate in Jasmonic Acid Signal Transduction in Response to Cold Stress in Tea Plant (Camellia sinensis)

Effect of Menthol Treatment on the Sprouting and Quality of Potato Tuber

Tea Tree Oil Microcapsules Inhibit Germination and Improve Postharvest Potato Tuber Quality

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