Role of non-microbial biostimulants in regulation of seed germination and seedling establishment

Gupta, Shubhpriya; Doležal, Karel; Kulkarni, Manoj G.; Balázs, Ervin; Staden, J. Van

doi:10.1007/s10725-021-00794-6

Cited by 21 publications

(17 citation statements)

References 272 publications

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“…Seed treatment with biostimulants generally involves three different processes, namely seed priming, seed coating and seed dipping ( Gupta et al., 2022 ). Seed priming is a pre-sowing treatment where the seeds are hydrated in a controlled manner such that the radicle does not protrude.…”

Section: Methods Of Application Of Microalgae-based Bio Fertilizer An...mentioning

confidence: 99%

Microalgae as next generation plant growth additives: Functions, applications, challenges and circular bioeconomy based solutions

2023

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Sustainable agriculture practices involve the application of environment-friendly plant growth promoters and additives that do not negatively impact the health of the ecosystem. Stringent regulatory frameworks restricting the use of synthetic agrochemicals and the increase in demand for organically grown crops have paved the way for the development of novel bio-based plant growth promoters. In this context, microalgae biomass and derived agrochemicals offer novel sources of plant growth promotors that enhance crop productivity and impart disease resistance. These beneficial effects could be attributed to the presence of wide range of biomolecules such as soluble amino acid (AA), micronutrients, polysaccharides, phytohormones and other signaling molecules in microalgae biomass. In addition, their phototrophic nature, high photosynthetic efficiency, and wide environmental adaptability make them an attractive source of biostimulants, biofertilizers and biopesticides. The present review aims to describe the various plant growth promoting metabolites produced by microalgae and their effects on plant growth and productivity. Further, the effects elicited by microalgae biostimulants with respect to different modes of applications such as seed treatments, foliar spray and soil/root drenching is reviewed in detail. In addition, the ability of microalgae metabolites to impart tolerance against various abiotic and biotic stressors along with the mechanism of action is discussed in this paper. Although the use of microalgae based biofertilizers and biostimulants is gaining popularity, the high nutrient and water requirements and energy intensive downstream processes makes microalgae based technology commercially unsustainable. Addressing this challenge, we propose a circular economy model of microalgae mediated bioremediation coupled with biorefinery approaches of generating high value metabolites along with biofertilizer applications. We discuss and review new trends in enhancing the sustainability of microalgae biomass production by co-cultivation of algae with hydroponics and utilization of agriculture effluents.

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Section: Methods Of Application Of Microalgae-based Bio Fertilizer An...mentioning

confidence: 99%

Microalgae as next generation plant growth additives: Functions, applications, challenges and circular bioeconomy based solutions

2023

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“…This is of particular importance in supporting plants against stress factors (Hayat et al, 2018). Savvides et al (2016) and Gupta et al (2022) proposed that seed coating is a key agronomic practiceto improve seed germination and increasing seedling vigor, which consequently contributes to improving crop production efficiency and increasing yields under optimal and suboptimal conditions. Meanwhile, creating seed coatings based on natural biostimulants is currently one of the most innovative and promising strategies for sustainable agriculture (Barone et al, 2018).…”

Section: Figure 6 Soybean Seed Yield Crops From Coated Seeds and Cont...mentioning

confidence: 99%

Biostimulating Extracts from Arctium lappa L. As Ecological Additives in Soybean Seed Coating Applications

Szparaga

2023

Agricultural Engineering

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This paper proposes a new biostimulant coating for soybean seeds. The aim of the study was to create a coating for Glycine max (L.) Merr. soybean seeds, using root infusion from Arctium lappa L. as a biostimulant component. The effectiveness of the produced coating was evaluated in a three-year field study. The analysis of the effectiveness of the developed coating was based on the evaluation of plant biometric traits and yield. The study showed that the designed and manufactured soybean seed coating based on the root infusion of Arctium lappa L. can be considered as a new agronomic strategy to improve the productivity of soybean Glicyne max (L.) Merr. under actual field conditions. The application of the biostimulant coating resulted in soybean plants with significantly increased biometric traits (plant height, height of the first pod set, number of pods per plant, number of seeds per pod) and productivity (yield improvement of more than 10%). Only a reduced weight of 1,000 seeds compared to control samples was noted.

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“…Given the consensus on rising crop productivity without the intensive use of synthetic fertilizers and pesticides that negatively impact the environment, various plant biostimulants (PBs) of microbial and non-microbial origins have been used (Rouphael and Colla 2020;Colla et al 2020;García-Santiago et al 2021;Gupta et al 2022). Recently, the European Union (EU) reached a consensual definition for PBs (EU Regulation 2019/1009), as follows: 'A plant biostimulant shall be an EU fertilizing product the function of which is to stimulate plant nutrition processes independently of the product's nutrient content with the sole aim of improving one or more of the following characteristics of the plant or the plant rhizosphere: nutrient use efficiency, tolerance to abiotic stress, quality traits, or availability of confined nutrients in the soil or rhizosphere' (EU 2019).…”

Section: Experiments Site and Plant Materialsmentioning

confidence: 99%

Cytogenetic and molecular characterization of almond trees treated with plant biostimulants or boron-based fertilizers

et al. 2022

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Role of non-microbial biostimulants in regulation of seed germination and seedling establishment

Cited by 21 publications

References 272 publications

Microalgae as next generation plant growth additives: Functions, applications, challenges and circular bioeconomy based solutions

Microalgae as next generation plant growth additives: Functions, applications, challenges and circular bioeconomy based solutions

Biostimulating Extracts from Arctium lappa L. As Ecological Additives in Soybean Seed Coating Applications

Cytogenetic and molecular characterization of almond trees treated with plant biostimulants or boron-based fertilizers

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