Seed priming as a cost effective technique for developing plants with cross tolerance to salinity stress

Johnson, Riya; Puthur, Jos T.

doi:10.1016/j.plaphy.2021.02.034

Cited by 139 publications

(81 citation statements)

References 62 publications

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“…Hydropriming, which relies on seed soaking in water and redrying prior to sowing, is known as a low cost, simple and eco-friendly seed treatment and can enhance germination and seedling establishment by improving seed hydration and metabolic responses to stress, particularly under osmotic stress conditions [ 61 ]. For various crops including sunflower ( Helianthus annuus ), green gram ( Vigna radiata ) and quinoa ( Chenopodium quinoa ) seed priming with water was shown to improve germination and seedling growth under salinity and/or drought [ 62 , 63 , 64 ].…”

Section: Discussionmentioning

confidence: 99%

Seed Treatment with Biostimulants Extracted from Weeping Willow (Salix babylonica) Enhances Early Maize Growth

Mutlu-Durak

Kutman

2021

Plants

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Biostimulants can be used as innovative and promising agents to address current needs of sustainable agriculture. Weeping willow tree (Salix babylonica) extracts are rich in many bioactive compounds, including, but not limited, to salicylates and phenolics. In this study, the potential of willow bark (WB) and willow leaf (WL) extracts is evaluated as plant-based biostimulants to improve the early growth of maize (Zea mays) under control and salinity stress conditions. In 3 days, seed treatment with salicylic acid and willow extract increased the shoot FW of maize seedlings 130% and 225%, respectively. The root area was, on average, enhanced by 43% with SA and 87% with willow extract applications. Moreover, these extracts increased the leaf protein concentration and reduced the negative effects of salinity during early growth. Reductions in lipid peroxidation and specific activities of antioxidative enzymes by seed treatments with willow extracts suggests a mitigation of salinity-induced oxidative stress. For most reported traits, WL applications were at least as effective as WB applications. Results indicate that aqueous extracts of weeping willow leaves, as well as bark, can be used as seed treatment agents with biostimulant activity to improve seedling growth and establishment under control and stress conditions.

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Section: Discussionmentioning

confidence: 99%

Seed Treatment with Biostimulants Extracted from Weeping Willow (Salix babylonica) Enhances Early Maize Growth

Mutlu-Durak

Kutman

2021

Plants

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“…hormones or compatible solutes (glycine betaine and proline) as foliar spray or seed priming [ 1 ]. Seed priming helps in early seedling growth by expediting the pre-occurrence of metabolic events necessary for seed germination and hence, reduces the time-gap between seed sowing and seedling emergence, improves tillering and grain yield [ 2 , 3 ]. It cause the over-expression of genes involved in biochemical pathways [ 4 ].…”

Section: Introductionmentioning

confidence: 99%

“…Priming mainly targets lag phase of seed germination and accelerates gene expression, rate of DNA repair, activation of enzymes and metabolite accumulation [ 4 ]. Seed priming initiates cross tolerance mechanisms which affects plant growth even at later stages of plant growth [ 3 ] as observed in wheat, canola, Capsicum annum . Some reports suggested that seed priming enhanced the seedling growth by increasing proline and activity of superoxide dismutase (SOD) [ 5 ].…”

Section: Introductionmentioning

confidence: 99%

Seed priming with proline improved photosystem II efficiency and growth of wheat (Triticum aestivum L.)

et al. 2021

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Background Proline can promote growth of plants by increasing photosynthetic activity under both non-stress and abiotic stress conditions. However, its role in non-stressed conditions is least studied. An experiment was conducted to assess as to whether increase in growth of wheat due to seed priming with proline under non-stress condition was associated with proline-induced changes in photosystem II (PSII) activity. Seeds of four wheat varieties (S-24, Sehar-06, Galaxy-13, and Pasban-90) were primed with different concentrations of proline (0, 5, 15 and 25 mM) for 12 h and allowed to grow under normal conditions. Biomass accumulation and photosynthetic performance, being two most sensitive features/indicators of plant growth, were selected to monitor proline modulated changes. Results Seed priming with proline increased the fresh and dry weights of shoots and roots, and plant height of all four wheat varieties. Maximum increase in growth attributes was observed in all four wheat varieties at 15 mM proline. Maximum growth improvement due to proline was found in var. Galaxy-13, whereas the reverse was true for S-24. Moreover, proline treatment changed the Fo, Fm, Fv/Fo, PIABS, PITot in wheat varieties indicating changes in PSII activity. Proline induced changes in energy fluxes for absorption, trapping, electron transport and heat dissipation per reaction center indicated that var. Galaxy-13 had better ability to process absorbed light energy through photosynthetic machinery. Moreover, lesser PSII efficiency in var. S-24 was due to lower energy flux for electron transport and greater energy flux for heat dissipation. This was further supported by the fact that var. S-24 had disturbance at acceptor side of PSI as reflected by reduction in ΔVIP, probability and energy flux for electron transport at the PSI end electron acceptors. Conclusion Seed priming with proline improved the growth of wheat varieties, which depends on type of variety and concentration of proline applied. Seed priming with proline significantly changed the PSII activity in wheat varieties, however, its translation in growth improvement depends on potential of processing of absorbed light energy by electron acceptors of electron transport chain, particularly those present at PSI end.

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“…Such modifications have been shown to lead to prolonged stress memory, with seed priming in particular being implicated heavily in such transgenerational stress memory events [28]. DNA methylation and chromatin organization have been proposed to have a significant impact on priming memory [26], previously thought to occur mainly through the shortening and fractionation of H3K27me3 (histone H3 trimethylated on lysine 27) islands [29]. Resistance in Arabidopsis to Pseudomonas syringae pathovar tomato bacterial strain DC3000 increased due to previous exposure to heat, salinity, or cold stresses driven by an epigenetic-dependent mechanism [30].…”

Section: Epigenetic Modification Linked To Primingmentioning

confidence: 99%

Deciphering the Epigenetic Alphabet Involved in Transgenerational Stress Memory in Crops

Mladenov

Fotopoulos

Kaiserli

et al. 2021

IJMS

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Although epigenetic modifications have been intensely investigated over the last decade due to their role in crop adaptation to rapid climate change, it is unclear which epigenetic changes are heritable and therefore transmitted to their progeny. The identification of epigenetic marks that are transmitted to the next generations is of primary importance for their use in breeding and for the development of new cultivars with a broad-spectrum of tolerance/resistance to abiotic and biotic stresses. In this review, we discuss general aspects of plant responses to environmental stresses and provide an overview of recent findings on the role of transgenerational epigenetic modifications in crops. In addition, we take the opportunity to describe the aims of EPI-CATCH, an international COST action consortium composed by researchers from 28 countries. The aim of this COST action launched in 2020 is: (1) to define standardized pipelines and methods used in the study of epigenetic mechanisms in plants, (2) update, share, and exchange findings in epigenetic responses to environmental stresses in plants, (3) develop new concepts and frontiers in plant epigenetics and epigenomics, (4) enhance dissemination, communication, and transfer of knowledge in plant epigenetics and epigenomics.

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Seed priming as a cost effective technique for developing plants with cross tolerance to salinity stress

Cited by 139 publications

References 62 publications

Seed Treatment with Biostimulants Extracted from Weeping Willow (Salix babylonica) Enhances Early Maize Growth

Seed Treatment with Biostimulants Extracted from Weeping Willow (Salix babylonica) Enhances Early Maize Growth

Seed priming with proline improved photosystem II efficiency and growth of wheat (Triticum aestivum L.)

Deciphering the Epigenetic Alphabet Involved in Transgenerational Stress Memory in Crops

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