Molecular insights of strigolactone biosynthesis, signalling pathways, regulatory roles, and hormonal crosstalks in plant systems

Selwal, Nidhi; Wani, Atif Khurshid; Akhtar, Nahid; Kaur, Maninderjit; Jassal, Prabhjot Singh

doi:10.1016/j.sajb.2023.06.046

Cited by 13 publications

(4 citation statements)

References 140 publications

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“…Phytohormones have a significant impact on controlling the quantity of lateral branching [ 71 ]. Phytohormones are essential in controlling plants’ growth, development, and nutrient distribution, significantly influencing their capacity to adapt to diverse environmental conditions [ 72 ]. In response to adversity or stress, plants exhibit changes in the content of various hormones, which regulate the physiological activities of the plant [ 73 ].…”

Section: Discussionmentioning

confidence: 99%

Physiological Characteristics and Transcriptomic Responses of Pinus yunnanensis Lateral Branching to Different Shading Environments

Zhou,

Gu,

et al. 2024

Plants

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Pinus yunnanensis is an important component of China’s economic development and forest ecosystems. The growth of P. yunnanensis seedlings experienced a slow growth phase, which led to a long seedling cultivation period. However, asexual reproduction can ensure the stable inheritance of the superior traits of the mother tree and also shorten the breeding cycle. The quantity and quality of branching significantly impact the cutting reproduction of P. yunnanensis, and a shaded environment affects lateral branching growth, development, and photosynthesis. Nonetheless, the physiological characteristics and the level of the transcriptome that underlie the growth of lateral branches of P. yunnanensis under shade conditions are still unclear. In our experiment, we subjected annual P. yunnanensis seedlings to varying shade intensities (0%, 25%, 50%, 75%) and studied the effects of shading on growth, physiological and biochemical changes, and gene expression in branching. Results from this study show that shading reduces biomass production by inhibiting the branching ability of P. yunnanensis seedlings. Due to the regulatory and protective roles of osmotically active substances against environmental stress, the contents of soluble sugars, soluble proteins, photosynthetic pigments, and enzyme activities exhibit varying responses to different shading treatments. Under shading treatment, the contents of phytohormones were altered. Additionally, genes associated with phytohormone signaling and photosynthetic pathways exhibited differential expression. This study established a theoretical foundation for shading regulation of P. yunnanensis lateral branch growth and provides scientific evidence for the management of cutting orchards.

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Section: Discussionmentioning

confidence: 99%

Physiological Characteristics and Transcriptomic Responses of Pinus yunnanensis Lateral Branching to Different Shading Environments

Zhou,

Gu,

et al. 2024

Plants

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“…[33][34][35] The reason is that the main effects of strigolactone are regulating plant branches, and strigolactone had different effects on the growth of various plant species. 11 The stress of Cd causes damage to plant chloroplast structure and decreases plant chlorophyll content, but exogenous strigolactone as a positive regulator that drives chlorophyll synthesis, mitigates the reduction in chlorophyll content. 33 The application of exogenous strigolactone affects the chlorophyll fluorescence parameters and chlorophyll content in plants, which results in an improvement in photosynthetic efficiency.…”

Section: Discussionmentioning

confidence: 99%

“…9,10 As hormones, strigolactones have important effects on the regulation of plant branches, as well as coordination with other hormones. 11 Mutations in strigolactones biosynthesis and signaling genes, such as OsD53, increase branching/tillering and promote plant growth by decreasing endogenous strigolactone levels or affecting strigolactone signaling. 12,13 Exogenous strigolactone can affect plant growth by altering other endogenous hormone levels, such as reducing endogenous growth hormone synthesis and inhibiting the expression of genes related to cytokinin synthesis.…”

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confidence: 99%

Exogenous strigolactone improves the cadmium accumulation in Solanum nigrum var. humile

Wang,

Xu,

Yang

et al. 2024

Env Prog and Sustain Energy

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The effects of exogenous strigolactone (using strigolactone analog GR24) on the cadmium (Cd) accumulation in Solanum nigrum var. humile were studied by a pot experiment. The Cd treatment (0.1 mg/L) inhibited the growth of S. nigrum var. humile, indicating that 0.1 mg/L produced the stress to S. nigrum var. humile. Spraying GR24 at 1 μmol/L did not change plant dry biomass, increased the photosynthetic pigment content and catalase activity, and decreased the peroxidase activity under Cd stress. By contrast, spraying GR24 at 2 μmol/L had no significant effects on these parameters. The superoxide dismutase activity was decreased by GR24 at 1 μmol/L, but increased by GR24 at 2 μmol/L. Nevertheless, both GR24 at 1 and 2 μmol/L increased the Cd contents, bioconcentration factors, and Cd extractions in various plant organs. Compared to Cd treatment, GR24 at 1 and 2 μmol/L increased the shoot Cd extraction by 20.0% and 14.5%, respectively. So, application of exogenous strigolactone could improve the phytoremediation capacity of S. nigrum var. humile. Correlation and grey relational analyses showed that the root Cd content, shoot Cd content, and root Cd extraction were the top three parameters closely related to the shoot Cd extraction. These findings suggest that exogenous strigolactone can effectively promote the Cd accumulation in S. nigrum var. humile, presenting a promising solution to enhance its phytoremediation capacity.

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“…This promotes efficient nutrient utilization by plants. Furthermore, AMF can affect the synthesis, release and signaling pathways of growth-promoting phytohormones, such as SLs, auxins and cytokinins in plants, leading to enhanced plant growth and development [15,23].…”

Section: Overview Of Arbuscular Mycorrhizal Fungimentioning

confidence: 99%

The Complex Interplay between Arbuscular Mycorrhizal Fungi and Strigolactone: Mechanisms, Sinergies, Applications and Future Directions

Boyno,

Rezaee Danesh,

Demir

et al. 2023

IJMS

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Plants, the cornerstone of life on Earth, are constantly struggling with a number of challenges arising from both biotic and abiotic stressors. To overcome these adverse factors, plants have evolved complex defense mechanisms involving both a number of cell signaling pathways and a complex network of interactions with microorganisms. Among these interactions, the relationship between symbiotic arbuscular mycorrhizal fungi (AMF) and strigolactones (SLs) stands as an important interplay that has a significant impact on increased resistance to environmental stresses and improved nutrient uptake and the subsequent enhanced plant growth. AMF establishes mutualistic partnerships with plants by colonizing root systems, and offers a range of benefits, such as increased nutrient absorption, improved water uptake and increased resistance to both biotic and abiotic stresses. SLs play a fundamental role in shaping root architecture, promoting the growth of lateral roots and regulating plant defense responses. AMF can promote the production and release of SLs by plants, which in turn promote symbiotic interactions due to their role as signaling molecules with the ability to attract beneficial microbes. The complete knowledge of this synergy has the potential to develop applications to optimize agricultural practices, improve nutrient use efficiency and ultimately increase crop yields. This review explores the roles played by AMF and SLs in plant development and stress tolerance, highlighting their individual contributions and the synergistic nature of their interaction.

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Molecular insights of strigolactone biosynthesis, signalling pathways, regulatory roles, and hormonal crosstalks in plant systems

Cited by 13 publications

References 140 publications

Physiological Characteristics and Transcriptomic Responses of Pinus yunnanensis Lateral Branching to Different Shading Environments

Physiological Characteristics and Transcriptomic Responses of Pinus yunnanensis Lateral Branching to Different Shading Environments

Exogenous strigolactone improves the cadmium accumulation in Solanum nigrum var. humile

The Complex Interplay between Arbuscular Mycorrhizal Fungi and Strigolactone: Mechanisms, Sinergies, Applications and Future Directions

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