Strigolactones: Coordination with other phytohormones and enhancement of abiotic stress responses

Sharma, Pallavi; Jha, Ambuj Bhushan; Dubey, Rama Shanker

doi:10.1016/j.envexpbot.2024.105782

Environmental and Experimental Botany

2024

DOI: 10.1016/j.envexpbot.2024.105782

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Strigolactones: Coordination with other phytohormones and enhancement of abiotic stress responses

Pallavi Sharma,

Ambuj Bhushan Jha,

Rama Shanker Dubey

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2024

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Cited by 2 publications

References 166 publications

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Strigolactone Preserves Fresh-Cut Apple Quality during Shelf Life

Liu,

Zhang,

Zhu

et al. 2024

Agriculture

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Strigolactone (SL) is a signal factor that plays a vital role in plants. The application of SL for the storability of horticultural products has recently received attention. In this experiment, fresh-cut apples were treated with SL at diverse concentrations and stored at 4 °C for 10 days, and the changes in quality characteristics, antioxidant system, hydrogen sulfide metabolism, and nitric oxide metabolism were determined. Compared with other treatments, the results showed that SL treatment at 0.50 µmol L−1 had excellent effects on maintaining fruit surface color, weight, firmness, reduced respiration rate, soluble solids content, and electrolyte leakage. SL treatment increased antioxidant enzyme activities, reduced reactive oxygen species (ROS) accumulation, altered the nitric oxide synthase (NOS)-like pathway to promote endogenous NO production in the fruit, and facilitated the L-cysteine-catalyzed process to increase the endogenous hydrogen sulfide (H2S) content. In addition, SL treatment affected the mRNA transcription levels of several genes related to the antioxidant system, H2S metabolism, and NO synthesis, including MdSOD, MdCAT, MdPOD, and MdSAT. Taken together, the results indicated that 0.50 µmol L−1 SL treatment improves the endogenous synthesis of NO and H2S, enhances the antioxidative system, and maintains the quality of fresh-cut apples during their shelf life. Therefore, the present study opens up the possibility of using the exogenous application of strigolactone in the fresh-cut processing industry.

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Strigolactone Preserves Fresh-Cut Apple Quality during Shelf Life

Liu,

Zhang,

Zhu

et al. 2024

Agriculture

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Modulation of Phytochemical Pathways and Antioxidant Activity in Peppermint by Salicylic Acid and GR24: A Molecular Approach

Jariani,

Sabokdast,

Moghadam

et al. 2024

Cells

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This study uncovers the potential of salicylic acid (SA) and synthetic Strigolactone (GR24) in enhancing menthol biosynthesis and antioxidant defense mechanisms in Mentha piperita L. Our comprehensive analysis, which included a series of controlled experiments and data analysis of the effects of these phytohormones on enzymatic antioxidants catalase (CAT) and ascorbate peroxidase (APX) and non-enzymatic antioxidants, including carotenoids and proline, revealed promising results. The study also examined their impact on lipid peroxidation, hydrogen peroxide levels, and the expression of genes critical to menthol and menthofuran synthesis. The results indicated that SA and GR24 significantly increased menthol production and reduced the levels of menthofuran and pulegone, suggesting upregulation in the plant’s innate defense systems. Furthermore, the activities of CAT and APX were elevated, reflecting a strengthened antioxidant response. Interestingly, the menthofuran synthase (MFS) was higher in the control group. At the same time, pulegone reductase (PR) genes and menthol dehydrogenase (MDH) gene expression were upregulated, highlighting the protective effects of SA and GR24. These findings underscore the potential of SA and GR24 to serve as effective bio-stimulants, improving the quality and resilience of peppermint plants and thereby contributing to eco-friendly agricultural practices in pollution-stressed environments.

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Strigolactones: Coordination with other phytohormones and enhancement of abiotic stress responses

Cited by 2 publications

References 166 publications

Strigolactone Preserves Fresh-Cut Apple Quality during Shelf Life

Strigolactone Preserves Fresh-Cut Apple Quality during Shelf Life

Modulation of Phytochemical Pathways and Antioxidant Activity in Peppermint by Salicylic Acid and GR24: A Molecular Approach

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