Influence of biostimulants-seed-priming on Ceratotheca triloba germination and seedling growth under low temperatures, low osmotic potential and salinity stress

Masondo, Nqobile A.; Kulkarni, Manoj G.; Finnie, J.F.; Staden, J. Van

doi:10.1016/j.ecoenv.2017.08.017

Cited by 85 publications

(46 citation statements)

References 29 publications

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“…Seed treatment technologies consist of seed treatment with synthetic or natural compounds, which are aimed at enhancing the uniformity and vigor of seedlings and improving the plant tolerance to abiotic stresses [ 28 ]. The use of biostimulants to counteract the effect of abiotic stress is well-recognized and their function in promoting plant defenses against adverse environmental conditions has been studying lately [ 9 , 12 ]. Seed pretreatments have been revealed as a good method to contrast the ever-increasing environmental stress presence, improving the yield of productions, starting from seed germination [ 29 ].…”

Section: Discussionmentioning

confidence: 99%

“…Similar to priming treatments, seed treatments make the seed more responsive to external stimuli and able to counteract stress conditions before seedling emergence [ 7 , 9 ]. So far, in the literature there are few references about biostimulants used for these purposes [ 10 , 11 , 12 , 13 ]. Biostimulants, which are a new generation of products that have been available on the market for a few years, could play a role as seed treatment agents [ 14 , 15 ].…”

Section: Introductionmentioning

confidence: 99%

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Transcriptome Analyses and Antioxidant Activity Profiling Reveal the Role of a Lignin-Derived Biostimulant Seed Treatment in Enhancing Heat Stress Tolerance in Soybean

Campobenedetto

Mannino

Agliassa

et al. 2020

Plants

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Soybean (Glycine max Merr.) is a worldwide important legume crop, whose growth and yield are negatively affected by heat stress at germination time. Here, we tested the role of a biostimulant based on lignin derivatives, plant-derived amino acids, and molybdenum in enhancing soybean heat stress tolerance when applied on seeds. After treatment with the biostimulant at 35 °C, the seed biometric parameters were positively influenced after 24 h, meanwhile, germination percentage was increased after 72 h (+10%). RNA-Seq analyses revealed a modulation of 879 genes (51 upregulated and 828 downregulated) in biostimulant-treated seeds as compared with the control, at 24 h after incubation at 35 °C. Surprisingly, more than 33% of upregulated genes encoded for ribosomal RNA (rRNA) methyltransferases and proteins involved in the ribosome assembly, acting in a specific protein network. Conversely, the downregulated genes were involved in stress response, hormone signaling, and primary metabolism. Finally, from a biochemical point of view, the dramatic H2O2 reduction 40%) correlated to a strong increase in non-protein thiols (+150%), suggested a lower oxidative stress level in biostimulant-treated seeds, at 24 h after incubation at 35 °C. Our results provide insights on the biostimulant mechanism of action and on its application for seed treatments to improve heat stress tolerance during germination.

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Section: Discussionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Transcriptome Analyses and Antioxidant Activity Profiling Reveal the Role of a Lignin-Derived Biostimulant Seed Treatment in Enhancing Heat Stress Tolerance in Soybean

Campobenedetto

Mannino

Agliassa

et al. 2020

Plants

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“…Seed priming using seaweed extracts might be another approach to mitigate abiotic stress subjected to plants during germination and early growth stages. For instance, the application of a commercial seaweed extract (Kelpack) through priming, enhanced the germination rate of Ceratotheca triloba seeds under low temperatures fluctuating between 10 °C and 15 °C, and under low osmotic potential (−0.15 MPa) in comparison with the control [61]. Still, the treatment had no significant effect on germination rate when plants were subjected to different concentrations of NaCl (from 5 mmol.L −1 to 50 mmol.L −1 ).…”

Section: Biostimulant Properties Of Seaweed Extract Are Emphasized Unmentioning

confidence: 99%

Trends in Seaweed Extract Based Biostimulants: Manufacturing Process and Beneficial Effect on Soil-Plant Systems

Boukhari

Barakate

Bouhia

et al. 2020

Plants

208

129

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The time when plant biostimulants were considered as “snake oil” is erstwhile and the skepticism regarding their agricultural benefits has significantly faded, as solid scientific evidences of their positive effects are continuously provided. Currently plant biostimulants are considered as a full-fledged class of agri-inputs and highly attractive business opportunity for major actors of the agroindustry. As the dominant category of the biostimulant segment, seaweed extracts were key in this growing renown. They are widely known as substances with the function of mitigating abiotic stress and enhancing plant productivity. Seaweed extracts are derived from the extraction of several macroalgae species, which depending on the extraction methodology lead to the production of complex mixtures of biologically active compounds. Consequently, plant responses are often inconsistent, and precisely deciphering the involved mechanism of action remains highly intricate. Recently, scientists all over the world have been interested to exploring hidden mechanism of action of these resources through the employment of multidisciplinary and high-throughput approaches, combining plant physiology, molecular biology, agronomy, and multi-omics techniques. The aim of this review is to provide fresh insights into the concept of seaweed extract (SE), through addressing the subject in newfangled standpoints based on current scientific knowledge, and taking into consideration both academic and industrial claims in concomitance with market’s requirements. The crucial extraction process as well as the effect of such products on nutrient uptake and their role in abiotic and biotic stress tolerance are scrutinized with emphasizing the involved mechanisms at the metabolic and genetic level. Additionally, some often overlooked and indirect effects of seaweed extracts, such as their influence on plant microbiome are discussed. Finally, the plausible impact of the recently approved plant biostimulant regulation on seaweed extract industry is addressed.

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“…The extracts presented a pH, in the universal indicator paper, with values between 6 and 7.5, considered not limiting for the germination of seeds (Laynez-Garsaball and Mendez-Natera, 2006). The extracts were made with distilled water, which presented low concentrations of sodium and chloride ions, preventing salinity from interfering with seed germination (Masondo et al, 2018).…”

Section: Preparation and Conduction Of The Experimentsmentioning

confidence: 99%

Analysis of Genotypic Variability in Avena spp. Regarding Allelopathic Potentiality

et al. 2019

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The recognized allelopathic activity of oats as a soil-cover plant induces the study of the potential of their germplasm. The objective of this study is to verify if there is genotype variability in the Avena spp. with regard to allelopathic activity. Extracts of A. strigosa ‘Agro Quaraí’, ‘Agro Esteio’, ‘Embrapa139’, ‘AF 12104’, ‘AF 12109’, ‘AF 12202’, ‘AF 12209’, A. sativa ‘UPFPS Farroupilha’ and ‘AF 1345 Ucraniana,’ were prepared in three concentrations w/v (5 g, 10 g, and 20 g of dry mass 100 mL-1). The experiment was conducted in a germination chamber for 15 days, with lettuce (Lactuca sativa L.) as the recipient plant. There was complete inhibition of germination under 20% w/v extracts and partial inhibition at 10% w/v. Only 5% w/v observed a difference between the genotypes, in which the highest efficiency was obtained from the extracts of white oats and black oats ‘AF 12104’ and ‘Agro Quaraí’, which reduced germination between 92% and 97%. When the concentration increased above 5% w/v the harmful effect on germination was significantly greater. Only in extracts at 5% w/v there was a higher genotypic effect on germination, with variation in the germination rate index, root, and hypocotyl stretching. The genotype that had the least allelopathic effect was AF 12202, with an inhibitory mean in the evaluated attributes of 35%. The other genotypes inhibited the attributes of germination and seedling growth between 66% and 86%. With regard to the variability in the Avenaspp., the allelopathic activity could be applied to obtain cultivars with greater weed suppressive power.

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Influence of biostimulants-seed-priming on Ceratotheca triloba germination and seedling growth under low temperatures, low osmotic potential and salinity stress

Cited by 85 publications

References 29 publications

Transcriptome Analyses and Antioxidant Activity Profiling Reveal the Role of a Lignin-Derived Biostimulant Seed Treatment in Enhancing Heat Stress Tolerance in Soybean

Transcriptome Analyses and Antioxidant Activity Profiling Reveal the Role of a Lignin-Derived Biostimulant Seed Treatment in Enhancing Heat Stress Tolerance in Soybean

Trends in Seaweed Extract Based Biostimulants: Manufacturing Process and Beneficial Effect on Soil-Plant Systems

Analysis of Genotypic Variability in Avena spp. Regarding Allelopathic Potentiality

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