Biostimulant priming in Oryza sativa: a novel approach to reprogram the functional biology under nutrient-deficient soil

Johnson, Riya; Puthur, Jos T.

doi:10.1007/s42976-021-00150-4

Cited by 9 publications

(6 citation statements)

References 27 publications

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“…Priming, due to an inherently relatively high stability of photosystems and their high recovery response, offers a role in reducing the severity of stress and can therefore promote a rapid and complete recovery of plant physiological functions. Although different priming methods undoubtedly improve photosynthetic parameters and overall photosynthetic efficiency of plants exposed to various environmental stresses ( Vincent et al., 2020 ; Sorrentino et al., 2021 ; Aswathi et al., 2022 ; Johnson and Puthur, 2022 ), the control mechanisms that govern the photosynthetic protection are still poorly understood. Recently, a major role in both the direct and indirect regulation of the photosynthetic protection under stress conditions has been attributed to various plant hormones ( Müller and Munné-Bosch, 2021 ), which have long been known as effective priming agents ( Kauss and Jeblick, 1995 ; Mur et al., 1996 ; Ton and Mauch-Mani, 2004 ; Hirao et al., 2012 ; Wang et al., 2014 ; Ji et al., 2021 ).…”

Section: Mechanisms Of Cytokinin-mediated Effects On Photosynthesismentioning

confidence: 99%

Plant hormone cytokinin at the crossroads of stress priming and control of photosynthesis

Hudeček

Nožková²,

Plíhalová³

et al. 2023

Front. Plant Sci.

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To cope with biotic and abiotic stress conditions, land plants have evolved several levels of protection, including delicate defense mechanisms to respond to changes in the environment. The benefits of inducible defense responses can be further augmented by defense priming, which allows plants to respond to a mild stimulus faster and more robustly than plants in the naïve (non-primed) state. Priming provides a low-cost protection of agriculturally important plants in a relatively safe and effective manner. Many different organic and inorganic compounds have been successfully tested to induce resistance in plants. Among the plethora of commonly used physicochemical techniques, priming by plant growth regulators (phytohormones and their derivatives) appears to be a viable approach with a wide range of applications. While several classes of plant hormones have been exploited in agriculture with promising results, much less attention has been paid to cytokinin, a major plant hormone involved in many biological processes including the regulation of photosynthesis. Cytokinins have been long known to be involved in the regulation of chlorophyll metabolism, among other functions, and are responsible for delaying the onset of senescence. A comprehensive overview of the possible mechanisms of the cytokinin-primed defense or stress-related responses, especially those related to photosynthesis, should provide better insight into some of the less understood aspects of this important group of plant growth regulators.

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Section: Mechanisms Of Cytokinin-mediated Effects On Photosynthesismentioning

confidence: 99%

Plant hormone cytokinin at the crossroads of stress priming and control of photosynthesis

Hudeček

Nožková²,

Plíhalová³

et al. 2023

Front. Plant Sci.

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“…seed chemical priming, as it shows outstanding advantages. Treatment of seeds prior sowing would be easier in practice, economically more efficient and cleaner than treatments at later developmental stages, as priming treatments are applied specifically to seeds in low amounts avoiding release of chemicals and/or microorganisms to the environment and, hence, implying a low risk of toxic exposure for operators while at the same time having a positive impact that improves seed germination and seedling establishment (Johnson & Puthur, 2021 ) even under adverse environmental conditions (Dragicevic et al, 2013 ). Furthermore, recent studies indicated that seed priming may be a method of improving tolerance through memory imprint (i.e., changes in the epigenome, Jiménez‐Arias et al, 2015 ), suggesting a prolonged protection against abiotic stress at later stages of development (Hu & Xiong, 2014 ).…”

Section: Priming To the Rescuementioning

confidence: 99%

New approaches to improve crop tolerance to biotic and abiotic stresses

Guzmán

Cellini

Fotopoulos

et al. 2021

Physiologia Plantarum

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During the last years, a great effort has been dedicated at the development and employment of diverse approaches for achieving more stress-tolerant and climateflexible crops and sustainable yield increases to meet the food and energy demands of the future. The ongoing climate change is in fact leading to more frequent extreme events with a negative impact on food production, such as increased temperatures, drought, and soil salinization as well as invasive arthropod pests and diseases. In this review, diverse "green strategies" (e.g., chemical priming, root-associated microorganisms), and advanced technologies (e.g., genome editing, high-throughput phenotyping) are described on the basis of the most recent research evidence. Particularly, attention has been focused on the potential use in a context of sustainable and climate-smart agriculture (the so called "next agriculture generation") to improve plant tolerance and resilience to abiotic and biotic stresses. In addition, the gap between the results obtained in controlled experiments and those from application of these technologies in real field conditions (lab to field step) is also discussed. | INTRODUCTIONCrop plants are continuously exposed to multiple abiotic and/or biotic stressors, leading to hindered growth and development and, subsequently, loss of productivity and crop quality. Examples of such stress factors include both abiotic factors such as drought, salinity, and heat, as well biotic stressors such as attack by fungal pathogens and insects, among others. The severity of the effect of such stressors can be clearly attested by multi-billion dollar losses in yield (FAO 2017 report, http://www.fao.org/3/I8656EN/i8656en.pdf). Recent climate model projections show that the Mediterranean basin is one of the regions that will be influenced mostly by climate change (IPCC, 2019). For this reason, improvement of the tolerance, of relevant crops, to water deficit and heat crucial to adapt to climate changes. In this context, reducing crop yield losses and increasing agricultural water use efficiency (WUE) in the Mediterranean region,

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“…In addition to improving plant tolerance against several abiotic stressors, this eco-friendly innovation enhances nutrient use efficiency, plant growth, and crop productivity [267]. The stimulatory effects of plant biostimulants, such as smoke-water on Sceletium tortuosum seeds [268], karrikinolide on Lactuca sativa [269] and Aristolochia debilis [270] seeds, commercial brown seaweed extract (Kelpak ® ) on Abelmoschus esculentus [271] and Ceratotheca triloba [272] seeds, and yeast extract on Oryza sativa seeds [273], have been reported.…”

Section: Plant Biostimulant Primingmentioning

confidence: 99%

Oxidative Stress, Ageing and Methods of Seed Invigoration: An Overview and Perspectives

et al. 2021

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The maintenance of seed quality during the long-term conservation of plant genetic resources is crucial for averting the projected food crises that are linked to the changing climate and rising world population. However, ageing-induced loss of seed vigour and viability during storage remains an inevitable process that compromises productivity in several orthodox-seeded crop species. Seed ageing under prolonged storage, which can occur even under optimal conditions, induces several modifications capable of causing loss of intrinsic physiological quality traits, including germination capacity and vigour, and stand establishment. The problems posed by seed ageing have motivated the development of various techniques for mitigating their detrimental effects. These invigoration techniques generally fall within one of two categories: (1) priming or pre-hydrating seeds in a solution for improved post-harvest performance, or (2) post-storage reinvigoration which often involves soaking seeds recovered from storage in a solution. Seed priming methods are generally divided into classical (hydropriming, osmopriming, redox priming, biostimulant priming, etc.) and advanced (nanopriming, magnetopriming and priming using other physical agents) techniques. With the increasing popularity of seed invigoration techniques to achieve the much-desired enhanced productivity and resilience in the face of a changing climate, there is an urgent need to explore these techniques effectively (in addition to other important practices such as plant breeding, fertilizer application, and the control of pests and diseases). This review aims to provide an overview of ageing in orthodox seeds and invigoration techniques that can enhance desirable agronomic and physiological characters.

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Biostimulant priming in Oryza sativa: a novel approach to reprogram the functional biology under nutrient-deficient soil

Cited by 9 publications

References 27 publications

Plant hormone cytokinin at the crossroads of stress priming and control of photosynthesis

Plant hormone cytokinin at the crossroads of stress priming and control of photosynthesis

New approaches to improve crop tolerance to biotic and abiotic stresses

Oxidative Stress, Ageing and Methods of Seed Invigoration: An Overview and Perspectives

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