Increased freezing stress tolerance of Nicotiana tabacum L. cv. Bright Yellow-2 cell cultures with the medium addition of Ascophyllum nodosum (L.) Le Jolis extract

Zamani-Babgohari, Mahbobeh; Critchley, Alan T.; Norrie, Jeffrey; Prithiviraj, Balakrishnan

doi:10.1007/s11627-019-09972-8

Cited by 10 publications

(2 citation statements)

References 41 publications

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“…A study using tobacco cultures treated with A. nodosum extracts revealed the same trend wherein the treated cultures showed significant levels of tolerance to freezing stress. This trait was attributed to the upregulation of key freezing tolerance genes such as galactinol synthase 2, pyrroline 5-carboxylate synthase, and acetyl-CoA carboxylase [ 126 ].…”

Section: Mechanisms and Mode Of Biostimulatory Activitiesmentioning

confidence: 99%

Biostimulant Properties of Seaweed Extracts in Plants: Implications towards Sustainable Crop Production

Alí

Ramsubhag

Jayaraman

2021

Plants

196

138

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The use of seaweed-based bioproducts has been gaining momentum in crop production systems owing to their unique bioactive components and effects. They have phytostimulatory properties that result in increased plant growth and yield parameters in several important crop plants. They have phytoelicitor activity as their components evoke defense responses in plants that contribute to resistance to several pests, diseases, and abiotic stresses including drought, salinity, and cold. This is often linked to the upregulation of important defense-related genes and pathways in the plant system, priming the plant defenses against future attacks. They also evoke phytohormonal responses due to their specific components and interaction with plant growth regulation. Treatment by seaweed extracts and products also causes significant changes in the microbiome components of soil and plant in support of sustainable plant growth. Seaweed extracts contain a plethora of substances which are mostly organic, but trace levels of inorganic nutrient elements are also present. Fractionation of seaweed extracts into their components and their respective bioassays, however, has not yielded favorable growth effects. Only the whole seaweed extracts have been consistently proven to be very effective, which highlights the role of multiple components and their complex interactive effects on plant growth processes. Since seaweed extracts are highly organic, they are ideally suited for organic farming and environmentally sensitive crop production. They are also very compatible with other crop inputs, paving the way for an integrated management approach geared towards sustainability. The current review discusses the growth and functional effects evoked by seaweed extracts and their modes and mechanisms of action in crop plants which are responsible for elicitor and phytostimulatory activities. The review further analyses the potential value of seaweed extracts in integrated crop management systems towards sustainable crop production.

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Section: Mechanisms and Mode Of Biostimulatory Activitiesmentioning

confidence: 99%

Biostimulant Properties of Seaweed Extracts in Plants: Implications towards Sustainable Crop Production

Alí

Ramsubhag

Jayaraman

2021

Plants

196

138

View full text Add to dashboard Cite

show abstract

“…While the accumulation of proline was aided by the overexpression of the proline biosynthesis genes (5CS1 and P5CS2), as well as the downregulation of ProDH, a gene involved in proline breakdown. Furthermore, the same study also observed the upregulation of gene DGD1, which is involved in the production of galactolipid, which is known to have a role in cold stress tolerance [52].…”

Section: Mechanism and Modes Of Action Of Seaweed Extracts In Promoti...mentioning

confidence: 65%

Seaweed Extracts as Bio-stimulants for Rice Plant (<em>Oryza </em><em>sativa</em>) – a Review

Tahar¹,

Lum²,

Surugau³

2022

Preprint

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Rice is considered as the most important crop for most of the world population. Utilization of seaweed as bio-stimulant can be an alternative way to enhance rice plant growth and productivity, as well as a strategic move to reduce the use of inorganic fertilizer that is harmful to the environment. Seaweed and its derivative products have been widely used as bio-stimulant in the agricultural industry because of their potential use in increasing plant growth and productivity. Auxins, gibberellins, and cytokinin are some of growth regulators found in seaweed extract, as well as macro and micronutrients required for plant growth and development. Several studies have found that seaweed extract has a variety of favorable effects as a plant growth promoter, including early seed germination and establishment, improved nutritional quality, increased yield and crop performance, and increased tolerance to environmental stress. The purpose of this paper is to give a comprehensive overview of the impacts of several seaweed species on seed germination, crop development and production, enhancement of rice plants (Oryza sativa) nutritional quality and the modes of action of seaweed extract includes the chemical components that might be causing plant physiological changes.

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Toward the molecular understanding of the action mechanism of Ascophyllum nodosum extracts on plants

et al. 2019

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The importance of biostimulants, defined as plant growth-promoting agents that differ notably from fertilizers, is increasing steadily because of their potential contribution to a worldwide strategy for securing food production without burdening the environment. Based on folkloric evidence and ethnographic studies, seaweeds have been useful for diverse human activities through time, including medicine and agriculture. Currently, seaweed extracts, especially those derived from the common brown alga Ascophyllum nodosum, represent an interesting category of biostimulants. Although A. nodosum extracts (abbreviated ANEs) are readily used because of their capacity to improve plant growth and to mitigate abiotic and biotic stresses, fundamental insights into how these positive responses are accomplished are still fragmentary. Generally, the effects of ANEs on plants have been attributed to their hormonal content, their micronutrient value, and/or the presence of alga-specific polysaccharides, betaines, polyamines, and phenolic compounds that would, alone or in concert, bring about the observed phenotypic effects. However, only a few of these hypotheses have been validated at the molecular level. Transcriptomics and metabolomics are now emerging as tools to dissect the action mechanisms exerted by ANEs. Here, we provide an overview of the available in planta molecular data that shed light on the pathways modulated by ANEs that promote plant growth and render plants more resilient to diverse stresses, paving the way toward the elucidation of the modus operandi of these extracts.

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Increased freezing stress tolerance of Nicotiana tabacum L. cv. Bright Yellow-2 cell cultures with the medium addition of Ascophyllum nodosum (L.) Le Jolis extract

Cited by 10 publications

References 41 publications

Biostimulant Properties of Seaweed Extracts in Plants: Implications towards Sustainable Crop Production

Biostimulant Properties of Seaweed Extracts in Plants: Implications towards Sustainable Crop Production

Seaweed Extracts as Bio-stimulants for Rice Plant (<em>Oryza </em><em>sativa</em>) – a Review

Toward the molecular understanding of the action mechanism of Ascophyllum nodosum extracts on plants

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