Toxic effects of heavy metal Cd and Zn on chlorophyll, carotenoid metabolism and photosynthetic function in tobacco leaves revealed by physiological and proteomics analysis

Zhang, Huihui; Xu, Zisong; Guo, Kaiwen; Huo, Yuze; He, Guanglong; Sun, Hongwei; Guan, Yupeng; Xu, Nan; Yang, Wei; Guang-yu, Sun

doi:10.1016/j.ecoenv.2020.110856

Cited by 167 publications

(63 citation statements)

References 136 publications

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“…Therefore, we speculate that transition metals in combination may reduce or restore the damage caused to the photosynthetic machinery for a short period of time under specific conditions. Comparative analysis of Cd and Zn stresses in tobacco (Nicotiana benthamiana) leaves revealed that under Cd stress, key enzymes involved in Chl biosynthesis were significantly down-regulated, decreasing the Chl content, expression of PSII (donor, receptor and core side) proteins and photosynthesis (Zhang et al, 2020). Several studies have reported the harmful effects of Cd and Zn on photosynthesis, thylakoid membrane ultra-structure, photosynthetic pigments, Chl fluorescence, electron transport, light capture, dark respiration, stomatal conductance, and Calvin cycle enzymes (Krupa, 1999;Vassilev et al, 2011;Paunov et al, 2018).…”

Section: Effect Of Heavy Metal Pollution On the Photosynthetic Machinerymentioning

confidence: 99%

Mechanisms Regulating the Dynamics of Photosynthesis Under Abiotic Stresses

et al. 2021

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Photosynthesis sustains plant life on earth and is indispensable for plant growth and development. Factors such as unfavorable environmental conditions, stress regulatory networks, and plant biochemical processes limits the photosynthetic efficiency of plants and thereby threaten food security worldwide. Although numerous physiological approaches have been used to assess the performance of key photosynthetic components and their stress responses, though, these approaches are not extensive enough and do not favor strategic improvement of photosynthesis under abiotic stresses. The decline in photosynthetic capacity of plants due to these stresses is directly associated with reduction in yield. Therefore, a detailed information of the plant responses and better understanding of the photosynthetic machinery could help in developing new crop plants with higher yield even under stressed environments. Interestingly, cracking of signaling and metabolic pathways, identification of some key regulatory elements, characterization of potential genes, and phytohormone responses to abiotic factors have advanced our knowledge related to photosynthesis. However, our understanding of dynamic modulation of photosynthesis under dramatically fluctuating natural environments remains limited. Here, we provide a detailed overview of the research conducted on photosynthesis to date, and highlight the abiotic stress factors (heat, salinity, drought, high light, and heavy metal) that limit the performance of the photosynthetic machinery. Further, we reviewed the role of transcription factor genes and various enzymes involved in the process of photosynthesis under abiotic stresses. Finally, we discussed the recent progress in the field of biodegradable compounds, such as chitosan and humic acid, and the effect of melatonin (bio-stimulant) on photosynthetic activity. Based on our gathered researched data set, the logical concept of photosynthetic regulation under abiotic stresses along with improvement strategies will expand and surely accelerate the development of stress tolerance mechanisms, wider adaptability, higher survival rate, and yield potential of plant species.

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Section: Effect Of Heavy Metal Pollution On the Photosynthetic Machinerymentioning

confidence: 99%

Mechanisms Regulating the Dynamics of Photosynthesis Under Abiotic Stresses

et al. 2021

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“…The experimental tobacco variety, 'Longjiang 911,' used in this study is the major tobacco variety grown in Heilongjiang Province, China, and 'Longjiang 911' is one of the most sensitive varieties to Cd stress (Zhang et al 2020a(Zhang et al , p. 2020b). The seeds were provided by the Mudanjiang Tobacco Research Institute.…”

Section: Experimental Materials and Treatmentmentioning

confidence: 99%

“…Among the heavy metal pollution, Cd is one of the most toxic and common heavy metal pollutants, and it is easy to enter the food chain (Chen et al 2018). Cd can destroy the structure of plant chloroplast (Santos et al 2018), inhibit the synthesis of chlorophyll and photosynthesis (Shukla et al 2008;Hendrik et al 2007;Zhang et al 2015;Zhang et al 2020a), reduce the activity of antioxidant enzymes (Wu et al 2015;Khanna et al 2019;Zhang et al 2020b), lead to the outbreak of ROS (Zhang et al 2007;Rizwan et al 2019;Zhang et al 2020c).…”

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confidence: 99%

Exogenous γ-glutamic acid (GABA) induces proline and glutathione synthesis in alleviating Cd-induced photosynthetic inhibition and oxidative damage in tobacco leaves

Liu

Li³

et al. 2021

Journal of Plant Interactions

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The effects of exogenous γ-glutamic acid (GABA) on photosynthetic gas exchange capacity, PSII function, proline (Pro) synthesis and ROS metabolism of tobacco leaves under cadmium (Cd) stress were studied. The results showed that both stomatal and non-stomatal factors were the important factors to limit the photosynthetic capacity of tobacco leaves under Cd stress. Pro accumulation and glutathione (GSH) content increase are the important ways for tobacco leaves to adapt to Cd stress. Exogenous GABA significantly increased the stability of oxygen-evolving complex (OEC) and the electron transfer rate of PSII in tobacco leaves under Cd stress, and increased G s and P n in varying degrees. Exogenous GABA also increased the expression of P5CS and P5CR genes in tobacco leaves under Cd stress, thus promoting Pro accumulation. In conclusion, 0.5 mmol•L −1 exogenous GABA can not only improve the carbon assimilation ability by increasing the G s , but also alleviate the oxidative damage by promoting the synthesis and accumulation of Pro and GSH, and improve the stability of photosynthetic function of tobacco leaves under Cd stress.

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“…Inhibition of photosynthesis under drought stress also results in excess production of reactive oxygen species (ROS), leading to increased levels of membrane peroxidation (Forni et al 2017). But plants can alleviate photosynthesis inhibition under drought stress by enhancing the rapid turnover of D1 protein (Yang et al 2014), CEF around PSI (Huang et al 2018;Zhang et al 2020c), state transitions in the photosystems (Wollman 2001;Depege et al 2003), photorespiration (Hu et al 2015;Messant et al 2018), and xanthophyll cycle (Pieters et al 2003;Ruban et al 2010), and initiating the antioxidant system (Nie et al 2007;Chao and Kao 2010). Because of this, maintaining an effective photosynthesis inhibition defense mechanism plays an important role in alleviating photosynthesis inhibition in plants under stress.…”

mentioning

confidence: 99%

Na⁺ accumulation alleviates drought stress induced photosynthesis inhibition of PSII and PSI in leaves of Medicago sativa

Zhang

Huo

Guo

et al. 2020

Journal of Plant Interactions

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Toxic effects of heavy metal Cd and Zn on chlorophyll, carotenoid metabolism and photosynthetic function in tobacco leaves revealed by physiological and proteomics analysis

Cited by 167 publications

References 136 publications

Mechanisms Regulating the Dynamics of Photosynthesis Under Abiotic Stresses

Mechanisms Regulating the Dynamics of Photosynthesis Under Abiotic Stresses

Exogenous γ-glutamic acid (GABA) induces proline and glutathione synthesis in alleviating Cd-induced photosynthetic inhibition and oxidative damage in tobacco leaves

Na⁺ accumulation alleviates drought stress induced photosynthesis inhibition of PSII and PSI in leaves of Medicago sativa

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Toxic effects of heavy metal Cd and Zn on chlorophyll, carotenoid metabolism and photosynthetic function in tobacco leaves revealed by physiological and proteomics analysis

Cited by 167 publications

References 136 publications

Mechanisms Regulating the Dynamics of Photosynthesis Under Abiotic Stresses

Mechanisms Regulating the Dynamics of Photosynthesis Under Abiotic Stresses

Exogenous γ-glutamic acid (GABA) induces proline and glutathione synthesis in alleviating Cd-induced photosynthetic inhibition and oxidative damage in tobacco leaves

Na+ accumulation alleviates drought stress induced photosynthesis inhibition of PSII and PSI in leaves of Medicago sativa

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Na⁺ accumulation alleviates drought stress induced photosynthesis inhibition of PSII and PSI in leaves of Medicago sativa