Effect of putrescine and proline on proflies of GABA, antioxidant activities in leaves of three Citrus species in response to low temperature stress

Mohammadrezakhani, Soheila; Rezanejad, Farkhondeh; Hajilou, Jafar

doi:10.1007/s13562-020-00645-x

Cited by 13 publications

(6 citation statements)

References 33 publications

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“…Soluble sugar, as an important metabolite in plants, also helps to increase osmotic pressure, provides energy and and induces other physiological and biochemical processes [68]. Proline accumulation in plant tissues under abiotic stress conditions leads to osmotic regulation [69], and this is consistent with our results. However, the soluble sugar content significantly decreased under treatment in our study (p < 0.05).…”

Section: Response Of Antioxidant Mechanisms Of K Obovata Seedlings To...supporting

confidence: 90%

Physiological and Biochemical Responses of Kandelia obovata to Upwelling Stress

Wang

Dong

et al. 2022

Water

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Mangroves growing in intertidal areas are faced with various stresses caused by coastal human activities and oceanic and atmospheric sources. Although the study of the physiological and biochemical characteristics of mangroves has been developing over the past four decades, the effect of upwelling on mangroves in plants stress resistance has seldom been investigated. Here, changes in the physiological and biochemical characteristics of the leaves of Kandelia obovata seedlings in response to upwelling were investigated (air temperature: 25 °C; water temperature: control 25 °C, 13 °C, and 5 °C; salinity: 10‰). The results revealed that upwelling treatment caused an increase in chlorophyll content but a decrease in photosynthetic fluorescence parameters. Hydrogen peroxide (H2O2) production and malondialdehyde activity (MDA) increased with the decrease in upwelling temperature. The proline content increased under upwelling stress, whereas the soluble sugar content decreased. Further, the activities of antioxidant enzymes, such as superoxide dismutase activity (SOD) and peroxidase activity (POD), showed an increasing trend during the treatment, while catalase activity (CAT) decreased. It was evidenced that upwelling stress triggered the physiological and biochemical responses of Kandelia obovata seedlings. This effect became more intense as the upwelling temperature decreased, and all these indicators showed different responses to upwelling stress. Through synthesizing more energy and regulating enzyme activity and osmotic pressure, the leaves of K. obovata formed a resistance mechanism to short-term upwelling.

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Section: Response Of Antioxidant Mechanisms Of K Obovata Seedlings To...supporting

confidence: 90%

Physiological and Biochemical Responses of Kandelia obovata to Upwelling Stress

Wang

Dong

et al. 2022

Water

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“…A recent study examined the response of Citrus species to foliar application of proline and putrescine (0, 15, 20 m M ) under CS treatment (1, −1, −3 °C) for 6 h (Mohammadrezakhani et al . 2021). Cold stress exposure altered physio‐biochemical processes and negatively affected growth.…”

Section: Exogenous Application Of Proline Mitigates Extreme Temperatu...mentioning

confidence: 99%

“…Exogenous treatment with proline and putrescine resulted in lower ROS production, and improved osmotic balance and phenolic compound content (Mohammadrezakhani et al . 2021). Similarly, exogenous proline decreased harmful effects of CS by upregulating activity of membrane transporters and acquisition of mineral nutrients in sugarcane (Rasheed et al .…”

Section: Exogenous Application Of Proline Mitigates Extreme Temperatu...mentioning

confidence: 99%

Assessment of proline function in higher plants under extreme temperatures

et al. 2023

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Climate change and abiotic stress factors are key players in crop losses worldwide. Among which, extreme temperatures (heat and cold) disturb plant growth and development, reduce productivity and, in severe cases, lead to plant death. Plants have developed numerous strategies to mitigate the detrimental impact of temperature stress. Exposure to stress leads to the accumulation of various metabolites, e.g. sugars, sugar alcohols, organic acids and amino acids. Plants accumulate the amino acid 'proline' in response to several abiotic stresses, including temperature stress. Proline abundance may result from de novo synthesis, hydrolysis of proteins, reduced utilization or degradation. Proline also leads to stress tolerance by maintaining the osmotic balance (still controversial), cell turgidity and indirectly modulating metabolism of reactive oxygen species. Furthermore, the crosstalk of proline with other osmoprotectants and signalling molecules, e.g. glycine betaine, abscisic acid, nitric oxide, hydrogen sulfide, soluble sugars, helps to strengthen protective mechanisms in stressful environments. Development of less temperature-responsive cultivars can be achieved by manipulating the biosynthesis of proline through genetic engineering. This review presents an overview of plant responses to extreme temperatures and an outline of proline metabolism under such temperatures. The exogenous application of proline as a protective molecule under extreme temperatures is also presented. Proline crosstalk and interaction with other molecules is also discussed. Finally, the potential of genetic engineering of proline-related genes is explained to develop 'temperature-smart' plants. In short, exogenous application of proline and genetic engineering of proline genes promise ways forward for developing 'temperature-smart' future crop plants.

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“…Citrus is one of the most important fruit crops planted worldwide, ranking first in production and yield among all fruit crops in 2019 (FAOSTAT data, accessed on 3 September 2021). As one of the sessile organisms, Citrus is frequently subjected to various biotic or abiotic stresses, including cold stress [ 19 ]. Considering that Rbohs play key roles in response to cold stress, the identification of Citrus Rbohs’ function offers an alternative way to enhance resistance to low-temperature stress.…”

Section: Introductionmentioning

confidence: 99%

Genome Wide Identification of Respiratory Burst Oxidase Homolog (Rboh) Genes in Citrus sinensis and Functional Analysis of CsRbohD in Cold Tolerance

Zhang

Luo

et al. 2022

IJMS

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Respiratory burst oxidase homologs (Rbohs) are critical enzymes involved in the generation of reactive oxygen species (ROS) that play an important role in plant growth and development as well as various biotic and abiotic stresses in plants. Thus far, there have been few reports on the characterization of the Rboh gene family in Citrus. In this study, seven Rboh genes (CsRbohA~CsRbohG) were identified in the Citrus sinensis genome. The CsRboh proteins were predicted to localize to the cell membrane. Most CsRbohs contained four conserved domains, an EF-hand domain, and a transmembrane region. Phylogenetic analysis demonstrated that the CsRbohs were divided into five groups, suggesting potential distinct functions and evolution. The expression profiles revealed that these seven CsRboh genes displayed tissue-specific expression patterns, and five CsRboh genes were responsive to cold stress. Fourteen putative cis-acting elements related to stress response, hormone response, and development regulation were present within the promoters of CsRboh genes. The in-silico microRNA target transcript analyses indicated that CsRbohE might be targeted by csi-miR164. Further functional and physiological analyses showed that the knockdown of CsRbohD in trifoliate orange impaired resistance to cold stress. As a whole, our results provide valuable information for further functional studies of the CsRboh genes in response to cold stress.

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Effect of putrescine and proline on proflies of GABA, antioxidant activities in leaves of three Citrus species in response to low temperature stress

Cited by 13 publications

References 33 publications

Physiological and Biochemical Responses of Kandelia obovata to Upwelling Stress

Physiological and Biochemical Responses of Kandelia obovata to Upwelling Stress

Assessment of proline function in higher plants under extreme temperatures

Genome Wide Identification of Respiratory Burst Oxidase Homolog (Rboh) Genes in Citrus sinensis and Functional Analysis of CsRbohD in Cold Tolerance

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