Effects of Different Nitrogen Fertilization Rates and Foliar Application of Humic Acid, Fulvic Acid and Tryptophan on Growth, Productivity and Chemical Composition of Common Bean Plants (Phaseolus vulgaris L.)

Elkhatib, H. A.; Gabr, S.M.; Roshdy, A.; Kasi, Radi S.

doi:10.21608/asejaiqjsae.2020.93900

Cited by 4 publications

(3 citation statements)

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“…Strawberry ("Albion" cultivar) tends to enter endodormancy during late fall (October) in Ontario, Canada, where the leaves senesce, flowers wither and fruits cease to set. 4 The application of TRP, the precursor of indoleamines, is known to supplement the rhizosphere including the microbiome and improve crop growth and productivity in a plethora of plant species, [5][6][7][8][9][10][11][12][13] but during the cropping season. TRP is applied to plants through various ways, including soil application, foliar spray, and seed priming.…”

Section: Introductionmentioning

confidence: 99%

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Stable indoleamines attenuate stress—A novel paradigm in tryptophan metabolism in plants

Ayyanath,

Shukla,

Sriskantharajah

et al. 2024

Journal of Pineal Research

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Stability of metabolites in harsh environments such as drought, temperature, and light suggest their untapped potential in processes the plants utilize in mitigation of abiotic and biotic stresses. Such metabolites could be nonspecific to microorganisms, plants, or animals. Many of the indoleamines are ubiquitous throughout species and have been shown to mitigate a wide range of stresses. We tested the role of indoleamine metabolites via exogenous application of the precursor tryptophan (TRP) on strawberry due to the short reproductive life cycle and its temperate traits. Seasonal responses appeared to be perturbed with exogenous application of TRP as a combination of foliar (3 mg/L) and ground drench (100 mg/L) or ground drench only (100 mg/L). The treatment yielded growth stimulatory responses besides mitigating stress, that is, short photoperiod and cold temperature. Plants preparing into dormancy reverted to produce green foliage and flowers that set fruit in unfavorable climate in the month of November where the untreated plants senesced. Analyses of the endogenous indoleamines in flowers and fruits of the treated plants indicated that the titers and ratios of the metabolites NAS, 2‐hydroxymelatonin, and N(1)‐acetyl‐N(2)‐formyl‐5‐methoxykynuramine assisted in the stress mitigation. The ASMT and M2H gene regulations emphasized the stability of intermediate metabolites of TRP. The TDC and T5H regulation explained the detection of a rare to find compound, 5‐hydroxytryptophan, in strawberry. This is the first report on detection of eight indoleamines in strawberry alongside the regulatory genes in the indoleamine pathway. Inclining climate crisis demands climate‐resilient plants in quick time and the indoleamine toolkit may offer the opportunity to develop simple and effective practices to manage stress tolerance in plants.

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Section: Introductionmentioning

confidence: 99%

“…The application of TRP, the precursor of indoleamines, is known to supplement the rhizosphere including the microbiome and improve crop growth and productivity in a plethora of plant species, 5–13 but during the cropping season. TRP is applied to plants through various ways, including soil application, foliar spray, and seed priming.…”

Section: Introductionmentioning

confidence: 99%

Stable indoleamines attenuate stress—A novel paradigm in tryptophan metabolism in plants

Ayyanath,

Shukla,

Sriskantharajah

et al. 2024

Journal of Pineal Research

View full text Add to dashboard Cite

show abstract

“…This process enhances the mineralisation of organic matter and increases the bioavailable fractions of micro-and macroelements to the plant [21]. Humic and fulvic acids can contribute to an increase in the leaf area, dry weight, and average fruit weight [22] and affect the leaf chlorophyll content and nitrogen, phosphorus, and potassium levels [23].…”

Section: Introductionmentioning

confidence: 99%

Morphological and Physiological Responses of Weigela florida ‘Eva Rathke’ to Biostimulants and Growth Promoters

Kovács,

Horotán,

Orlóci

et al. 2024

Horticulturae

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Ornamental horticulture and breeding, as well as urban landscape architecture, are facing increasing challenges driven by an intensely changing climate and urbanisation. The expansion of cities should be combined with an overall growth of green spaces, where ornamental plant species and cultivars will have to withstand a diverse range of environmental conditions, whereby they are often exposed to multiple stress factors. One of the most widely used ornamental shrub species Weigela florida ‘Eva Rathke’ was treated with the growth promoters Bistep with humic and fulvic acid, Kelpak® seaweed extract, and Yeald Plus with a high zinc content to test their applicability in a plant nursery. Bistep decreased the physiological parameters (the transpiration rate by 60%, the evapotranspiration rate by 56.5%, and the proline stress enzyme content level by 82.2%), indicating the stress level of the treated plants. The activity of β-glucosidase decreased with all growth-promoting treatments (11.5% for Kelpak and 9.5% for Yeald Plus), as did β-glucosaminidase (22.1% for Kelpak and 9.8% for Yeald Plus), but Bistep treatment reduced the activity of the enzymes less (9.9% for β-glucosidase and 3.3% for β-glucosaminidase). The measured alkaline phosphatase enzyme activity increased with treatment (by 10.7% for Kelpak, 11.7% for Yeald Plus, and 12.63% for Bistep). Based on the results, it was concluded that Bistep and Yeald Plus may be suitable for use in the studied variety, whereas Kelpak® may not be suggested in plant nurseries for growing W. florida ‘Eva Rathke’ plants.

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The utilization of tryptophan and glycine amino acids as safe alternatives to chemical fertilizers in apple orchards

Mosa

Ali

Abdelsalam

2020

Environ Sci Pollut Res

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Effects of Different Nitrogen Fertilization Rates and Foliar Application of Humic Acid, Fulvic Acid and Tryptophan on Growth, Productivity and Chemical Composition of Common Bean Plants (Phaseolus vulgaris L.)

Cited by 4 publications

References 0 publications

Stable indoleamines attenuate stress—A novel paradigm in tryptophan metabolism in plants

Stable indoleamines attenuate stress—A novel paradigm in tryptophan metabolism in plants

Morphological and Physiological Responses of Weigela florida ‘Eva Rathke’ to Biostimulants and Growth Promoters

The utilization of tryptophan and glycine amino acids as safe alternatives to chemical fertilizers in apple orchards

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