The effects of putrescine are partly overlapping with osmotic stress processes in wheat

Pál, Magda; Majláth, Imre; Németh, Edit; Hamow, Kamirán Áron; Szalai, Gabriella; Rudnóy, Szabolcs; Balassa, György; Janda, Tibor

doi:10.1016/j.plantsci.2017.12.011

Cited by 18 publications

(6 citation statements)

References 53 publications

(52 reference statements)

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“…In the present study, the higher enzyme activity of SOD, CAT, and POD was found in Put treatments. Similar results of higher POD isozymes activity were reported in wheat in the previous studies ( Pál et al, 2018a ). SOD converts O 2 ⋅– to H 2 O 2 and gives frontline protection against ROS.…”

Section: Discussionsupporting

confidence: 91%

“…Similarly, Szalai et al (2017) found that high concentrations of PAs inhibited the growth of maize, but this negative effect was not shown in wheat. This may be due to further synthesis, translocation, or other metabolic mechanisms of PAs in different species ( Kubiś et al, 2014 ; Pál et al, 2018a ). The results in this study demonstrated how the application of exogenous Put effectively reduced drought-related oxidative damage by the network of ROS scavenging and the metabolic accumulation of PAs.…”

Section: Discussionmentioning

confidence: 99%

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Exogenous Putrescine Alleviates Drought Stress by Altering Reactive Oxygen Species Scavenging and Biosynthesis of Polyamines in the Seedlings of Cabernet Sauvignon

et al. 2021

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Climate change imposes intensive dry conditions in most grape-growing regions. Drought stress is one of the most devastating abiotic factors threatening grape growth, yield, and fruit quality. In this study, the alleviation effect of exogenous putrescine (Put) was evaluated using the seedlings of Cabernet Sauvignon (Vitis vinifera L.) subjected to drought stress. The phenotype, photosynthesis index, membrane injury index (MII), and antioxidant system, as well as the dynamic changes of endogenous polyamines (PAs) of grape seedlings, were monitored. Results showed that drought stress increased the MII, lipid peroxidation, and the contents of reactive oxygen species (ROS) (H2O2 and O2–), while it decreased the antioxidant enzyme activity and the net photosynthesis rate (Pn). However, the application of Put alleviated the effects of drought stress by altering ROS scavenging, enhancing the antioxidant system, and increasing the net Pn. Put distinctly increased the activity of superoxide dismutase (SOD), peroxidase (POD), and catalase (CAT), as well as the contents of ascorbic acid (AsA) and glutathione (GSH). Meanwhile, exogenous Put also promoted the metabolism of endogenous PAs by upregulating their synthetic genes. Our results confirmed that the exogenous application of Put can enhance the antioxidant capacity as well as alter the PA pool, which provides better drought tolerance for Cabernet Sauvignon seedlings.

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Section: Discussionsupporting

confidence: 91%

Section: Discussionmentioning

confidence: 99%

Exogenous Putrescine Alleviates Drought Stress by Altering Reactive Oxygen Species Scavenging and Biosynthesis of Polyamines in the Seedlings of Cabernet Sauvignon

et al. 2021

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“…This positive effect of Put was also observed in the vegetative development and yield of barley salt-stressed plants ( Seleem et al, 2021 ). Pál et al (2018) also suggested that Put pretreatment induces acclimation processes under controlled conditions. These results agree with ours, so the Put-treated plants presented the best growth and yield under control conditions, and they had higher biomass production and some productive parameters under WD ( Figures 4 , 6A , 7A ).…”

Section: Discussionmentioning

confidence: 99%

Addressing the contribution of small molecule-based biostimulants to the biofortification of maize in a water restriction scenario

et al. 2022

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Biostimulants have become an asset for agriculture since they are a greener alternative to traditionally used plant protection products. Also, they have gained the farmers’ acceptance due to their effect on enhancing the plant’s natural defense system against abiotic stresses. Besides commercially available complex products, small molecule-based biostimulants are useful for industry and research. Among them, polyamines (PAs) are well-studied natural compounds that can elicit numerous positive responses in drought-stressed plants. However, the studies are merely focused on the vegetative development of the plant. Therefore, we aimed to evaluate how drenching with putrescine (Put) and spermidine (Spd) modified the maize production and the yield quality parameters. First, a dosage optimization was performed, and then the best PA concentrations were applied by drenching the maize plants grown under well-watered (WW) conditions or water deficit (WD). Different mechanisms of action were observed for Put and Spd regarding maize production, including when both PAs similarly improved the water balance of the plants. The application of Put enhanced the quality and quantity of the yield under WW and Spd under WD. Regarding the nutritional quality of the grains, both PAs increased the carbohydrates content, whereas the contribution to the protein content changed by the interaction between compound and growth conditions. The mineral content of the grains was also greatly affected by the water condition and the PA application, with the most relevant results observed when Spd was applied, ending with flour richer in Zn, Cu, and Ca minerals that are considered important for human health. We showed that the exogenous PA application could be a highly efficient biofortification approach. Our findings open a new exciting use to be studied deep in the biostimulant research.

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“…An earlier study documented that PAs interacted with melatonin and enhanced the heat tolerance of plants, which was evidenced by melatonin exogenous application that positively improved heat tolerance in tomatoes via enhancing the antioxidant system efficiency, activating the ascorbate–glutathione cycle, and reprogramming the PAs’ metabolic and NO biosynthesis pathways that aid in ROS detoxification and improved cellular membrane stability to lessen heat-induced oxidative stress ( Jahan et al., 2019 ). Putrescine (Put) is an initial product in the PA biosynthesis pathway; reports have elaborated that it displays its function in tolerance of oxidative stress through hormonal regulation and stress signaling in plants ( Pál et al., 2018a ); moreover, exogenous application of Put had improved heat stress tolerance in tea plants, where it improves pollen performance and reduces ROS which is dose-dependent ( Çetinbaş-Genç, 2020 ). In tomato seedlings, exogenous Put improved heat tolerance by improving chlorophyll content and reducing chlorophyll catabolic enzyme activity, regulating endogenous free polyamines, elevating antioxidant defense capacity, and inducing heat-shock-related gene expression ( Jahan et al., 2022 ).…”

Section: Polyamines and Abiotic Stressesmentioning

confidence: 99%

Versatile roles of polyamines in improving abiotic stress tolerance of plants

et al. 2022

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In recent years, extreme environmental cues such as abiotic stresses, including frequent droughts with irregular precipitation, salinity, metal contamination, and temperature fluctuations, have been escalating the damage to plants’ optimal productivity worldwide. Therefore, yield maintenance under extreme events needs improvement in multiple mechanisms that can minimize the influence of abiotic stresses. Polyamines (PAs) are pivotally necessary for a defensive purpose under adverse abiotic conditions, but their molecular interplay in this remains speculative. The PAs’ accretion is one of the most notable metabolic responses of plants under stress challenges. Recent studies reported the beneficial roles of PAs in plant development, including metabolic and physiological processes, unveiling their potential for inducing tolerance against adverse conditions. This review presents an overview of research about the most illustrious and remarkable achievements in strengthening plant tolerance to drought, salt, and temperature stresses by the exogenous application of PAs. The knowledge of underlying processes associated with stress tolerance and PA signaling pathways was also summarized, focusing on up-to-date evidence regarding the metabolic and physiological role of PAs with exogenous applications that protect plants under unfavorable climatic conditions. Conclusively, the literature proposes that PAs impart an imperative role in abiotic stress tolerance in plants. This implies potentially important feedback on PAs and plants’ stress tolerance under unfavorable cues.

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The effects of putrescine are partly overlapping with osmotic stress processes in wheat

Cited by 18 publications

References 53 publications

Exogenous Putrescine Alleviates Drought Stress by Altering Reactive Oxygen Species Scavenging and Biosynthesis of Polyamines in the Seedlings of Cabernet Sauvignon

Exogenous Putrescine Alleviates Drought Stress by Altering Reactive Oxygen Species Scavenging and Biosynthesis of Polyamines in the Seedlings of Cabernet Sauvignon

Addressing the contribution of small molecule-based biostimulants to the biofortification of maize in a water restriction scenario

Versatile roles of polyamines in improving abiotic stress tolerance of plants

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