Potential Role of Foliage Applied Strigolactone (GR24) on Photosynthetic Pigments, Gas Exchange Attributes, Mineral Nutrients and Yield Components of Zea mays (L.) Under Saline Regimes

Iftikhar, Iqra; Shahbaz, Muhammad; Wahid, Muhammad Ashfaq

doi:10.1007/s10343-022-00720-4

Cited by 3 publications

(2 citation statements)

References 87 publications

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“…The effects of GR24 treatments on responses to high salinity were tested in several species: arabidopsis (Ha et al, 2014); beet ( Brassica napus L.) (N. Ma et al, 2017); rice (Ling et al, 2020); cucumber ( Cucumis sativus L.) (X.‐H. Zhang et al, 2022); tomato (H. Liu, Li, et al, 2022); wheat ( Triticum aestivum L.) (Kausar & Shahbaz, 2017); sunflower ( Helianthus annuus L.) (Sarwar & Shahbaz, 2019, 2020; Zulfiqar et al, 2021); wild sage ( Salvia nemorosa L.) (Sharifi & Bidabadi, 2020); corn ( Zea mays ) (Iftikhar et al, 2022); and apple tree ( Malus hupehensis Rehd) (C. Ma et al, 2022; Zheng et al, 2021). A realignment of physiological and molecular indicators to unstressed controls was consistently observed following treatment, namely in terms of protection from a drop in germination efficiency, biomass and/or chlorophyll content loss; maintenance of gas exchange parameters (net photosynthetic rate, stomatal conductance, transpiration); and lower malondialdehyde content (MDA, a biomarker of polyunsaturated lipid peroxidation that accumulates in stressed cells).…”

Section: Strigolactones As Regulators Of Stress Tolerancementioning

confidence: 99%

“…The effects of GR24 treatments on responses to high salinity were tested in several species: arabidopsis (Ha et al, 2014); beet (Brassica napus L.) (N. Ma et al, 2017); rice (Ling et al, 2020); cucumber (Cucumis sativus L.) (X.-H. Zhang et al, 2022); tomato (H. Liu, Li, et al, 2022); wheat (Triticum aestivum L.) (Kausar & Shahbaz, 2017); sunflower (Helianthus annuus L.) (Sarwar & Shahbaz, 2019Zulfiqar et al, 2021); wild sage (Salvia nemorosa L.) (Sharifi & Bidabadi, 2020); corn (Zea mays) (Iftikhar et al, 2022); and apple tree (Malus hupehensis Rehd) (C. Ma et al, 2022;Zheng et al, 2021) A mixed stress-coping strategy (avoidance and tolerance) seems induced by GR24 (e.g., by increasing root/shoot biomass ratios or reducing the uptake of soil pollutants).…”

Section: Induction Of Tolerance To Drought and Salinity Stressmentioning

confidence: 99%

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Strigolactones as a hormonal hub for the acclimation and priming to environmental stress in plants

Trasoletti¹,

Visentin²,

Campo³

et al. 2022

Plant Cell & Environment

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Strigolactones are phytohormones with many attributed roles in development, and more recently in responses to environmental stress. We will review evidence of the latter in the frame of the classic distinction among the three main stress acclimation strategies (i.e., avoidance, tolerance and escape), by taking osmotic stress in its several facets as a non‐exclusive case study. The picture we will sketch is that of a hormonal family playing important roles in each of the mechanisms tested so far, and influencing as well the build‐up of environmental memory through priming. Thus, strigolactones appear to be backstage operators rather than frontstage players, setting the tune of acclimation responses by fitting them to the plant individual history of stress experience.

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Section: Strigolactones As Regulators Of Stress Tolerancementioning

confidence: 99%

“…The effects of GR24 treatments on responses to high salinity were tested in several species: arabidopsis (Ha et al, 2014); beet (Brassica napus L.) (N. Ma et al, 2017); rice (Ling et al, 2020); cucumber (Cucumis sativus L.) (X.-H. Zhang et al, 2022); tomato (H. Liu, Li, et al, 2022); wheat (Triticum aestivum L.) (Kausar & Shahbaz, 2017); sunflower (Helianthus annuus L.) (Sarwar & Shahbaz, 2019Zulfiqar et al, 2021); wild sage (Salvia nemorosa L.) (Sharifi & Bidabadi, 2020); corn (Zea mays) (Iftikhar et al, 2022); and apple tree (Malus hupehensis Rehd) (C. Ma et al, 2022;Zheng et al, 2021) A mixed stress-coping strategy (avoidance and tolerance) seems induced by GR24 (e.g., by increasing root/shoot biomass ratios or reducing the uptake of soil pollutants).…”

Section: Induction Of Tolerance To Drought and Salinity Stressmentioning

confidence: 99%

Strigolactones as a hormonal hub for the acclimation and priming to environmental stress in plants

Trasoletti¹,

Visentin²,

Campo³

et al. 2022

Plant Cell & Environment

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Novel Strigolactone Mimics That Modulate Photosynthesis and Biomass Accumulation in Chlorella sorokiniana

Popa,

Georgescu,

Dumitrascu

et al. 2023

Molecules

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In terrestrial plants, strigolactones act as multifunctional endo- and exo-signals. On microalgae, the strigolactones determine akin effects: induce symbiosis formation with fungi and bacteria and enhance photosynthesis efficiency and accumulation of biomass. This work aims to synthesize and identify strigolactone mimics that promote photosynthesis and biomass accumulation in microalgae with biotechnological potential. Novel strigolactone mimics easily accessible in significant amounts were prepared and fully characterized. The first two novel compounds contain 3,5-disubstituted aryloxy moieties connected to the bioactive furan-2-one ring. In the second group of compounds, a benzothiazole ring is connected directly through the cyclic nitrogen atom to the bioactive furan-2-one ring. The novel strigolactone mimics were tested on Chlorella sorokiniana NIVA-CHL 176. All tested strigolactones increased the accumulation of chlorophyll b in microalgae biomass. The SL-F3 mimic, 3-(4-methyl-5-oxo-2,5-dihydrofuran-2-yl)-3H-benzothiazol-2-one (7), proved the most efficient. This compound, applied at a concentration of 10−7 M, determined a significant biomass accumulation, higher by more than 15% compared to untreated control, and improved the quantum yield efficiency of photosystem II. SL-F2 mimic, 5-(3,5-dibromophenoxy)-3-methyl-5H-furan-2-one (4), applied at a concentration of 10−9 M, improved protein production and slightly stimulated biomass accumulation. Potential utilization of the new strigolactone mimics as microalgae biostimulants is discussed.

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Metabolomic Analysis of Key Metabolites and Their Pathways Revealed the Response of Alfalfa (Medicago sativa L.) Root Exudates to rac-GR24 under Drought Stress

Yang

et al. 2023

Plants

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The rac-GR24, an artificial analog of strigolactone, is known for its roles in inhibiting branches, and previous studies have reported that it has a certain mechanism to relieve abiotic stress, but the underlying metabolic mechanisms of mitigation for drought-induced remain unclear. Therefore, the objectives of this study were to identify associated metabolic pathways that are regulated by rac-GR24 in alfalfa (Medicago sativa L.) and to determine the metabolic mechanisms of rac-GR24 that are involved in drought-induced root exudate. The alfalfa seedling WL-712 was treated with 5% PEG to simulate drought, and rac-GR24 at a concentration of 0.1 µM was sprayed. After three days of treatment, root secretions within 24 h were collected. Osmotic adjustment substances and antioxidant enzyme activities were measured as physiological indicators, while LS/MS was performed to identify metabolites regulated by rac-GR24 of root exudate under drought. The results demonstrated that rac-GR24 treatment could alleviate the negative effects from drought-induced on alfalfa root, as manifested by increased osmotic adjustment substance content, cell membrane stability, and antioxidant enzyme activities. Among the 14 differential metabolites, five metabolites were uniquely downregulated in plants in rac-GR24 treatment. In addition, rac-GR24 could relieve drought-induced adverse effects on alfalfa through metabolic reprogramming in the pathways of the TCA cycle, pentose phosphate, tyrosine metabolism, and the purine pathway. This study indicated that rac-GR24 could improve the drought resistance of alfalfa by influencing the components of root exudates.

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Potential Role of Foliage Applied Strigolactone (GR24) on Photosynthetic Pigments, Gas Exchange Attributes, Mineral Nutrients and Yield Components of Zea mays (L.) Under Saline Regimes

Cited by 3 publications

References 87 publications

Strigolactones as a hormonal hub for the acclimation and priming to environmental stress in plants

Strigolactones as a hormonal hub for the acclimation and priming to environmental stress in plants

Novel Strigolactone Mimics That Modulate Photosynthesis and Biomass Accumulation in Chlorella sorokiniana

Metabolomic Analysis of Key Metabolites and Their Pathways Revealed the Response of Alfalfa (Medicago sativa L.) Root Exudates to rac-GR24 under Drought Stress

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