Post-germination effects of the smoke-derived compound 3-methyl-2H-furo[2,3-c]pyran-2-one, and its potential as a preconditioning agent

Staden, J. Van; Sparg, S.G.; Kulkarni, Manoj G.; Light, M.E.

doi:10.1016/j.fcr.2005.12.007

Cited by 124 publications

(90 citation statements)

References 34 publications

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“…The identification of this natural molecule, the major germination cue from smoke. Van Staden et al (2006) investigated the post-germination effect of smoke-water and KAR1 on tomato (Lycopersicon esculentum cv. Heinz-1370), okra (Abelmoschus esculentus cv.…”

Section: Smoke-derived Compoundsmentioning

confidence: 99%

Plant derived smoke stimulation for seed germination and enhancement of crop growth: A review

Govindaraj¹,

Masilamani²,

Albert³

et al. 2016

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Smoke is an important factor involved in fire and post fire germination cues. The role of smoke in stimulating germination was first highlighted in South Africa in a study on Audouinia capitata, a threatened fynbos species. Farmers throughout the world have traditionally used fire and smoke in grain drying practices. It is thought that these methods improve germination and seedling vigor. Smoke has been applied in agriculture mainly by two ways viz., Aerosol method and Smoke water method. In aerosol method, seeds were directly exposed to smoke generated from burning plant material. Smoke-water is one of the most convenient means of application. The biologically active compounds present in smoke readily dissolve in water and when this smoke-extract is used as a diluted solution, treated seeds of many species show a marked improvement in germination. The main active germination compound of smoke-water derived from burned plant materials and cellulose has been identified as butenolide [3-methyl-2H-furo (2, 3-c) pyran-2-one], which is effective at very low concentrations (1 ppb). The compound has recently been referred to as "karrikinolide". Following the initial isolation of KAR1, a whole new family of plant growth regulators, termed 'karrikins', were identified in smoke and several related compounds have been synthesized. It is estimated that between 2 and 5 g of KAR1 is more than sufficient for 1 ha of land application rates that are commercially viable. Application of smoke in various agricultural, horticultural forage and forestry crops had found that smoke acted as a cue for breaking seeds of dormancy, improve seed germination, seedling growth, flowering, plant biomass of different plant families, Invitro plantlet regeneration and pathogen control (Anti-microbial properties).

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Section: Smoke-derived Compoundsmentioning

confidence: 99%

Plant derived smoke stimulation for seed germination and enhancement of crop growth: A review

Govindaraj¹,

Masilamani²,

Albert³

et al. 2016

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“…Biopriming is a treatment where sweet corn seeds are coated with a bacterium and soaked in warm water until the seed moisture content increases to 35-40%. Seed priming treatments (pre-sowing seed treatment) using moist chilling, growth regulators (gibberellic acid, GA 3 ) and plant-derived smoke compounds (El-Dengawy, 2005;van Staden et al, 2006), magnetic fields (Eşitken, 2003) and salts, such as KNO 3 , have been effective in improving seed germination at low and high temperatures (Demir & Mavi, 2004). Seed maturation stage can also be an influential factor in germination performance at low temperatures and response to priming treatment (Demir & Oztokat, 2003).…”

Section: Introductionmentioning

confidence: 99%

Influence of Seed Invigoration Techniques on Germination and Seedling Vigor of Maize (Zea mays L.)

Khan¹,

Shah²,

Khan³

et al. 2017

Cercetari Agronomice in Moldova

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ABSTRACT. The objective of this study was to assess the comparative efficiency of different priming techniques on germination and early seedling growth of maize cultivars. Laboratory experiments were conducted to examine the efficacy of different seed invigoration treatments on seed germination and vigor traits of three maize hybrids, Pioneer 3025, Pioneer 70 and Baber at Agronomy research laboratory, University of Agriculture, Peshawar, Pakistan. The experiment was laid in completely randomized design (CRD) and was replicated thrice.The treatments included control treatment (T 1 ) unsoaked/dry seed, (T 2 ) hydropriming with distilled water for 24 hrs, (T 3 ) halo priming treatments with NaCl (3% solution) for 24 hrs, (T 4 ) osmopriming with PEG-6000 for 24 hrs and (T 5 ), hormonal priming with GA 3 for 24 hrs. The results showed that seed invigoration treatment with gibberellic acid (GA 3 ) PEG-6000 and hydropriming with distilled water for 24 hrs gave higher germination, decreased days to 50% germination, increased shoot length, root length, seedling fresh and dry weight, as compared to halo priming with NaCl and control treatment. It is concluded that seed invigoration with GA 3 , osmopriming with PEG-6000 and hydropriming with distilled water for 24 hrs serve as an appropriate treatment for accelerating the emergence and growth parameters of maize hybrid. Pioneer 3025 showed its superiority over other cultivars in all the studied parameters.

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“…In field trials, KAR 1 is effective at less than 5 g ha 21 compared with 10 ton ha 21 smoke water and thus may have practical value in agriculture, conservation, and restoration (Stevens et al, 2007). Smoke water fractions containing KAR 1 have been reported to enhance seedling vigor of several weed and crop species, indicating potential use for KAR 1 as a seed priming agent to improve germination and seedling establishment Kulkarni et al, 2006;van Staden et al, 2006;Daws et al, 2007a). Since its discovery, a widespread capacity for KAR 1 germination response among angiosperms has been demonstrated (Flematti et al, 2004;van Staden et al, 2004van Staden et al, , 2006Merritt et al, 2006;Daws et al, 2007a;Stevens et al, 2007).…”

mentioning

confidence: 99%

Karrikins Discovered in Smoke Trigger Arabidopsis Seed Germination by a Mechanism Requiring Gibberellic Acid Synthesis and Light

et al. 2008

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Discovery of the primary seed germination stimulant in smoke, 3-methyl-2H-furo[2,3-c]pyran-2-one (KAR1), has resulted in identification of a family of structurally related plant growth regulators, karrikins. KAR1 acts as a key germination trigger for many species from fire-prone, Mediterranean climates, but a molecular mechanism for this response remains unknown. We demonstrate that Arabidopsis (Arabidopsis thaliana), an ephemeral of the temperate northern hemisphere that has never, to our knowledge, been reported to be responsive to fire or smoke, rapidly and sensitively perceives karrikins. Thus, these signaling molecules may have greater significance among angiosperms than previously realized. Karrikins can trigger germination of primary dormant Arabidopsis seeds far more effectively than known phytohormones or the structurally related strigolactone GR-24. Natural variation and depth of seed dormancy affect the degree of KAR1 stimulation. Analysis of phytohormone mutant germination reveals suppression of KAR1 responses by abscisic acid and a requirement for gibberellin (GA) synthesis. The reduced germination of sleepy1 mutants is partially recovered by KAR1, which suggests that germination enhancement by karrikin is only partly DELLA dependent. While KAR1 has little effect on sensitivity to exogenous GA, it enhances expression of the GA biosynthetic genes GA3ox1 and GA3ox2 during seed imbibition. Neither abscisic acid nor GA levels in seed are appreciably affected by KAR1 treatment prior to radicle emergence, despite marked differences in germination outcome. KAR1 stimulation of Arabidopsis germination is light-dependent and reversible by far-red exposure, although limited induction of GA3ox1 still occurs in the dark. The observed requirements for light and GA biosynthesis provide the first insights into the karrikin mode of action.

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Post-germination effects of the smoke-derived compound 3-methyl-2H-furo[2,3-c]pyran-2-one, and its potential as a preconditioning agent

Cited by 124 publications

References 34 publications

Plant derived smoke stimulation for seed germination and enhancement of crop growth: A review

Plant derived smoke stimulation for seed germination and enhancement of crop growth: A review

Influence of Seed Invigoration Techniques on Germination and Seedling Vigor of Maize (Zea mays L.)

Karrikins Discovered in Smoke Trigger Arabidopsis Seed Germination by a Mechanism Requiring Gibberellic Acid Synthesis and Light

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