Potassium: a vital nutrient mediating stress tolerance in plants

Mahiwal, Swati; Pandey, Girdhar K.

doi:10.1007/s13562-022-00775-4

Cited by 5 publications

(2 citation statements)

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“…Nutrient deficiency directly restricts crop yield and quality, a common problem in agricultural production [ 93 ]. Increased ROS accumulation and oxidative damage have been frequently observed in different plant tissues following mineral nutrient imbalance [ 94 , 95 , 96 , 97 ]. For example, plants with low nitrogen levels experience serious lipid peroxidation and accumulate high levels of lipid-derived reactive aldehydes.…”

Section: Endogenous Aldehyde Levels In Plants Under Abiotic Stress Co...mentioning

confidence: 99%

Lipid-Derived Aldehydes: New Key Mediators of Plant Growth and Stress Responses

Liang

Qian

Wang

et al. 2022

Biology

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Aldehydes, derivatives of lipids, are ubiquitously produced through non-enzymatic and enzymatic pathways in higher plants and participate in many physiological and biological processes. Increasing evidence demonstrates that aldehydes are involved in plants response to many abiotic stresses, such as light, drought, heat and nutrient deficiency. In plant cells, endogenously triggered or exogenously applied high concentrations of aldehydes can damage proteins and nucleic acid, disturb redox homeostasis, and consequently inhibit plant growth; therefore, they are considered cytotoxins. Aldehyde levels are also used as biomarkers to evaluate the health status of plants. Further genetic research shows that several enzymes have strong capacities to detoxify these electrophilic aldehydes. Small molecules, such as carnosine and glutathione, also exhibit the ability to scavenge aldehydes, effectively promoting plant growth. Recently, increasing evidence has shown that certain aldehydes at certain concentrations can upregulate survival genes, activate antioxidant responses, increase defense against pathogens and stimulate plant growth. This review summarizes recent studies of lipid-derived aldehydes in higher plants, mainly focusing on the generation pathway, toxic effects, and detoxification strategies. In addition, the signaling effects of aldehydes in plants are also discussed.

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Section: Endogenous Aldehyde Levels In Plants Under Abiotic Stress Co...mentioning

confidence: 99%

Lipid-Derived Aldehydes: New Key Mediators of Plant Growth and Stress Responses

Liang

Qian

Wang

et al. 2022

Biology

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“…Thus, K deficiency causes well-known physiological damages [ 8 , 9 ]. Examples are osmotic imbalance and losses in photosynthetic rates due to low water use efficiency [ 10 , 11 ].…”

Section: Introductionmentioning

confidence: 99%

Silicon, by promoting a homeostatic balance of C:N:P and nutrient use efficiency, attenuates K deficiency, favoring sustainable bean cultivation

et al. 2023

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Background In many regions of the world, K is being depleted from soils due to agricultural intensification a lack of accessibility, and the high cost of K. Thus, there is an urgent need for a sustainable strategy for crops in this environment. Si is an option for mitigating stress due to nutritional deficiency. However, the underlying effects of Si in mitigating K deficiency C:N:P homeostasis still remains unknown for bean plants. This is a species of great worldwide importance. Thus, this study aims to evaluate whether i) K deficiency modifies the homeostatic balance of C, N and P, and, if so, ii) Si supply can reduce damage caused to nutritional stoichiometry, nutrient use efficiency, and production of dry mass in bean plants. Results K deficiency caused a reduction in the stoichiometric ratios C:N, C:P, and P:Si in shoots and C:N, C:P, C:Si, N:Si, and P:Si in roots, resulting in a decrease in K content and use efficiency and reducing biomass production. The application of Si in K-deficient plants modified the ratios C:N, C:Si, N:P, N:Si, and P:Si in shoots and C:N, C:P, C:Si, N:Si, N:P, and P:Si in roots, increasing the K content and efficiency, reducing the loss of biomass. In bean plants with K sufficiency, Si also changed the stoichiometric ratios C:N, C:P, C:Si, N:P, N:Si, and P:Si in shoots and C:N, C:Si, N:Si, and P:Si in roots, increasing K content only in roots and the use efficiency of C and P in shoots and C, N, and P in roots, increasing the biomass production only in roots. Conclusion K deficiency causes damage to the C:N:P homeostatic balance, reducing the efficiency of nutrient use and biomass production. However, Si is a viable alternative to attenuate these nutritional damages, favoring bean growth. The future perspective is that the use of Si in agriculture in underdeveloped economies with restrictions on the use of K will constitute a sustainable strategy to increase food security.

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