How are germination performance and seedling establishment under abiotic stress improved by seed priming? A review

Oliveira, Alexandre Bosco de; Gomes-Filho, Enéas

doi:10.21475/ajcs.2016.10.07.p7740

Cited by 8 publications

(7 citation statements)

References 27 publications

(35 reference statements)

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“…Seed priming is a promising approach to improve germination and seedling development by altering the physiological state of the seed [ 7 , 8 ]. Recently, the technique of seed priming with synthetic nanoparticles, typically called “nanopriming” has also been gaining importance in improving desired traits in crops [ 9 ].…”

Section: Resultsmentioning

confidence: 99%

“…Biotic and abiotic stresses cause considerable and unpredictable losses to crops [ 7 ]. Several methodologies, such as conventional breeding, mutation breeding, polyploidy breeding, genetic engineering, and seed priming, have been adapted to accelerate seedling emergence in the field and to impart tolerance to plants against adverse conditions [ 8 ]. Various seed priming (presoaking) techniques such as priming with water, salts, osmoticum, solid matrices, different chemicals, temperature, and plant hormones have been developed [ 8 ].…”

Section: Introductionmentioning

confidence: 99%

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Manganese Oxide Nanoparticles as Safer Seed Priming Agent to Improve Chlorophyll and Antioxidant Profiles in Watermelon Seedlings

2021

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The use of nanoscale nutrients in agriculture to improve crop productivity has grown in recent years. However, the bioefficacy, safety, and environmental toxicity of nanoparticles (NPs) are not fully understood. Herein, we used onion bulb extract to synthesize manganese oxide nanoparticles (MnO-NPs). X-ray diffraction, X-ray photoelectron spectroscopy, and high-resolution transmission electron microscopy were used for the structural and morphological characterization of synthesized MnO-NPs. The MnO-NPs were oval shape crystalline nanoparticles of Mn2O3 with sizes 22–39 nm. In further studies, we assessed the comparative toxicity of seed priming with MnO-NPs and its bulk counterparts (KMnO4 and Mn2O3), which showed seed priming with MnO-NPs had comparatively less phytotoxicity. Investigating the effect of seed priming with different concentrations of MnO-NPs on the hormonal, phenolic acid, chlorophyll, and antioxidant profiles of watermelon seedlings showed that treatment with 20 mg·L−1 MnO-NPs altered the chlorophyll and antioxidant profiles of seedlings. At ≤40 mg·L−1, MnO-NPs had a remarkable effect on the phenolic acid and phytohormone profiles of the watermelon seedlings. The physiological outcomes of the MnO-NP seed priming in watermelon were genotype-specific and concentration-dependent. In conclusion, the MnO-NPs were safer than their bulk counterparts and could increase crop productivity.

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Section: Resultsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Manganese Oxide Nanoparticles as Safer Seed Priming Agent to Improve Chlorophyll and Antioxidant Profiles in Watermelon Seedlings

2021

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“…Seed priming has been widely used as a technique to improve seed vigor, emergence rate and uniformity of germination under different abiotic stress conditions, especially saline and osmotic stresses, high or low temperatures and water deficit [57,58]. In addition to water hydration, osmotic solutions have been applied as soaking seed medium; its low water potential allows a slow imbibition of the seed during the initial phases of germination but without the root radicle protrusion [59].…”

Section: Effect Of Seed Priming On Ion Homeostasis To Cope With Abiotmentioning

confidence: 99%

“…Different inorganic salts such as NaCl, KCl, KNO 3 , K 3 PO 4 , KH 2 PO 4 , MgSO 4 , and CaCl 2 have been used in osmopriming [60][61][62]. In these reports, the effect of priming was tested in many crops under a wide range of environmental conditions in order to induce a suitable germination [58].…”

Section: Effect Of Seed Priming On Ion Homeostasis To Cope With Abiotmentioning

confidence: 99%

The Importance of Ion Homeostasis and Nutrient Status in Seed Development and Germination

et al. 2020

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Seed is the dissemination unit of plants initiating an important stage in the life cycle of plants. Seed development, comprising two phases: embryogenesis and seed maturation, may define the quality of sown seed, especially under abiotic stress. In this review we have focused on the recent advances in the molecular mechanisms underlying these complex processes and how they are controlled by distinct environmental factors regulating ion homeostasis into the seed tissues. The role of transporters affecting seed embryogenesis and first stages of germination as imbibition and subsequent radicle protrusion and extension were revised from a molecular point of view. Seed formation depends on the loading of nutrients from the maternal seed coat to the filial endosperm, a process of which the efflux is not clear and where different ions and transporters are involved. The clear interrelation between soil nutrients, presence of heavy metals and the ion capacity of penetration through the seed are discussed in terms of ion effect during different germination stages. Results concerning seed priming techniques used in the improvement of seed vigor and radicle emergence are shown, where the use of nutrients as a novel way of osmopriming to alleviate abiotic stress effects and improve seedlings yield is discussed. Novel approaches to know the re-translocation from source leaves to developing seeds are considered, as an essential mechanism to understand the biofortification process of certain grains in order to cope with nutrient deficiencies, especially in arid and semiarid areas. Finally, the role of new genes involved in hormone-dependent processes, oxidative response and water uptake into the seeds during their development or germination, have been described as plant mechanisms to deal with abiotic stresses.

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“…According to Marcos Filho (2005), water is one of the main factors influencing germination, since it is involved directly and indirectly in all stages, besidesreactivating metabolism. Very negative osmotic potentials delay and decrease germination, with a minimum level of humidity that the seed must reach to germinate, which depends on the chemical composition and permeability tests (Verslueset al, 2006;Oliveira & Gomes-Filho, 2016). Therefore, it is extremely important to maintain an adequate level of hydration that allows the reactivation of Com. Sci., Bom Jesus, v.9, n.4, p.602-612, Oct./Dec.…”

Section: Introductionmentioning

confidence: 99%

Recovery and germinative response of Amaranthus deflexus L. seeds under different levels of water stress and luminosities

et al. 2019

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Article AbstractThe objective of this work was to evaluate, in two experiments, the effect of water stress and luminosity on the germinative behavior and vigor of Amaranthus deflexus L seeds. The seeds were sown in Petri dishes containing two sheets of filter paper moistened with distilled water, in the control treatment. Using this treatment-control configuration, as a standard of comparison, two assays were performed using subsamples from the same A. deflexus seed population. In the first experiment (experiment 1), solutions of polyethylene glycol 6000 (PEG 6000) were used, providing osmotic potentials of -0.3; -0.6; -0.9; -1.2 and -1.5 MPa; however, in the second trial (experiment 2) osmotic potentials of -0.1; -0.2; -0.3; -0.4 and -0.5 MPa were used. At the end of the test, the ungerminated seeds for each treatment were washed and germinated on a filter paper moistened with water. The germination and vigor of the seeds were evaluated through the first germination count, germination test, germination speed index and average germination time. The experimental design was completely randomized, in a 2 x 6 factorial scheme, totaling twelve treatments, with four replicates of 50 seeds each, in both trials. Water stress negatively affects the performance of A. deflexus seeds, reducing germination and vigor from -0.1 MPa. Seed germination was compromised by the absence of light, regardless of the applied stress levels. There was an increase in seed germination after application of the same at higher levels of water stress.

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How are germination performance and seedling establishment under abiotic stress improved by seed priming? A review

Cited by 8 publications

References 27 publications

Manganese Oxide Nanoparticles as Safer Seed Priming Agent to Improve Chlorophyll and Antioxidant Profiles in Watermelon Seedlings

Manganese Oxide Nanoparticles as Safer Seed Priming Agent to Improve Chlorophyll and Antioxidant Profiles in Watermelon Seedlings

The Importance of Ion Homeostasis and Nutrient Status in Seed Development and Germination

Recovery and germinative response of Amaranthus deflexus L. seeds under different levels of water stress and luminosities

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