Seed priming with seaweed extract mitigate heat stress in spinach: effect on germination, seedling growth and antioxidant capacity

Neto, Antônio Pereira dos Anjos; Oliveira, Gustavo Roberto Fonseca de; Mello, Simone da Costa; Silva, Marcio Souza da; Gomes-Júnior, Francisco Guilhien; Novembre, Ana Dionisia da Luz Coelho; Azevedo, Ricardo Antunes

doi:10.1590/1678-4499.20200127

Cited by 20 publications

(4 citation statements)

References 34 publications

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“…Seaweed extracts (SWE) derived by extracting several macroalgae species are now widely used substances having the potentiality to reduce adversity of abiotic stress, thus enhancing plant productivity [129]. Anjos Neto et al [130] experimented with five concen-trations of A. nodosum SWE in spinach seedlings under HT (30 • C) and observed that in both non-stressed and HT-stressed conditions, MDA and H 2 O 2 contents were reduced due to the application of 0.30% SWE. Furthermore, improved activity of antioxidant enzymes were also observed with SWE which could have reduced the oxidative degradation by lower MDA content and cell oxidative damage under HTs.…”

Section: High Temperaturementioning

confidence: 99%

Biostimulants for the Regulation of Reactive Oxygen Species Metabolism in Plants under Abiotic Stress

Hasanuzzaman

Parvin

Bardhan

et al. 2021

Cells

139

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Global food security for a growing population with finite resources is often challenged by multiple, simultaneously occurring on-farm abiotic stresses (i.e., drought, salinity, low and high temperature, waterlogging, metal toxicity, etc.) due to climatic uncertainties and variability. Breeding for multiple stress tolerance is a long-term solution, though developing multiple-stress-tolerant crop varieties is still a challenge. Generation of reactive oxygen species in plant cells is a common response under diverse multiple abiotic stresses which play dual role of signaling molecules or damaging agents depending on concentration. Thus, a delicate balance of reactive oxygen species generation under stress may improve crop health, which depends on the natural antioxidant defense system of the plants. Biostimulants represent a promising type of environment-friendly formulation based on natural products that are frequently used exogenously to enhance abiotic stress tolerance. In this review, we illustrate the potential of diverse biostimulants on the activity of the antioxidant defense system of major crop plants under stress conditions and their other roles in the management of abiotic stresses. Biostimulants have the potential to overcome oxidative stress, though their wider applicability is tightly regulated by dose, crop growth stage, variety and type of biostimulants. However, these limitations can be overcome with the understanding of biostimulants’ interaction with ROS signaling and the antioxidant defense system of the plants.

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Section: High Temperaturementioning

confidence: 99%

Biostimulants for the Regulation of Reactive Oxygen Species Metabolism in Plants under Abiotic Stress

Hasanuzzaman

Parvin

Bardhan

et al. 2021

Cells

139

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“…Various priming techniques are available to reduce the effects of stress factors which includes hydropriming, halopriming, osmopriming, hormonal priming and biopriming (Neto et al, 2020;Chakraborty and Dwivedi, 2021).…”

Section: Priming Methodsmentioning

confidence: 99%

Seed Priming for Mitigating Salinity Stress Effects in Plants: A General Review

Gürsoy

2024

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Salinity is a significant abiotic stressor that inflicts considerable harm on agricultural fields and plants. Factors such as global warming, improper irrigation practices, excessive fertilization, drainage issues, inappropriate tillage and cultivation methods contribute significantly to the emergence of salinity problems in agricultural lands. When faced with stressors, plants employ various mechanisms to ensure their survival. Consequently, salinity stress adversely affects seed germination, leads to stunted plant growth, reduces yield, results in the accumulation of reactive oxygen species (ROS), diminishes chlorophyll content, elevates proline levels, promotes the production of malondialdehyde (MDA) and impacts osmoprotectants like glycine betaine. Salt stress not only induces osmotic stress and ion toxicity but also disrupts plant nutrient uptake. Today, numerous approaches are available to mitigate the detrimental impacts of stressful conditions and one such method is seed priming, which encompasses various techniques. This review delves into the adverse effects of salinity on plants and examines the role of seed priming processes in ameliorating these harmful consequences.

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“…Moreover, as shown in the latest study, the application of seaweed extract in combination with other biostimulants should be considered. Ascophyllum nodosum Soybean Expressed stress-responsive genes and antioxidant enzymes [216] Ascophyllum nodosum Arabidopsis Downregulated stress-responsive negative growth regulator [217] Ecklonia maxima Chicory plants Enhanced physiological traits (relative water content, water use efficiency, chlorophyll content, nutrient uptake) [218] Heat stress Ascophyllum nodosum Spinach Improved germination percentage and germination speed, and reduced hydrogen peroxide and malondialdehyde content [219] Seaweed extract Bentgrass Enhanced tolerance [220] 2.6.5. Higher Plant Extract…”

Section: Seaweed Extractmentioning

confidence: 99%

Recent Advancements in Mitigating Abiotic Stresses in Crops

Oyebamiji,

Adigun,

Shamsudin

et al. 2024

Horticulturae

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In recent years, the progressive escalation of climate change scenarios has emerged as a significant global concern. The threat to global food security posed by abiotic stresses such as drought, salinity, waterlogging, temperature stress (heat stress, freezing, and chilling), and high heavy metal accumulation is substantial. The implementation of any of these stresses on agricultural land induces modifications in the morphological, biochemical, and physiological processes of plants, leading to diminished rates of germination, growth, photosynthesis, respiration, hormone and enzyme activity disruption, heightened oxidative stress, and ultimately, a reduction in crop productivity. It is anticipated that the frequency of these stresses will progressively escalate in the future as a result of a rise in climate change events. Therefore, it is crucial to develop productive strategies to mitigate the adverse effects of these challenges on the agriculture industry and improve crop resilience and yield. Diverse strategies have been implemented, including the development of cultivars that are resistant to climate change through the application of both conventional and modern breeding techniques. An additional application of the prospective and emerging technology of speed breeding is the acceleration of tolerance cultivar development. Additionally, plant growth regulators, osmoprotectants, nutrient and water management, planting time, seed priming, microbial seed treatment, and arbuscular mycorrhiza are regarded as effective methods for mitigating abiotic stresses. The application of biochar, kaolin, chitosan, superabsorbent, yeast extract, and seaweed extract are examples of promising and environmentally benign agronomic techniques that have been shown to mitigate the effects of abiotic stresses on crops; however, their exact mechanisms are still not yet fully understood. Hence, collaboration among researchers should be intensified to fully elucidate the mechanisms involved in the action of the emerging technologies. This review provides a comprehensive and current compilation of scientific information on emerging and current trends, along with innovative strategies to enhance agricultural productivity under abiotic stress conditions.

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Seed priming with seaweed extract mitigate heat stress in spinach: effect on germination, seedling growth and antioxidant capacity

Cited by 20 publications

References 34 publications

Biostimulants for the Regulation of Reactive Oxygen Species Metabolism in Plants under Abiotic Stress

Biostimulants for the Regulation of Reactive Oxygen Species Metabolism in Plants under Abiotic Stress

Seed Priming for Mitigating Salinity Stress Effects in Plants: A General Review

Recent Advancements in Mitigating Abiotic Stresses in Crops

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