Contribution of strigolactone in plant physiology, hormonal interaction and abiotic stresses

Bhoi, Anita; Yadu, Bhumika; Chandra, Jipsi; Keshavkant, S.

doi:10.1007/s00425-021-03678-1

Cited by 63 publications

(35 citation statements)

References 102 publications

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“…SL, as a group of carotenoidderived plant hormones, play an important role in regulating various developmental and adaptation processes in plants (Wang et al, 2020). The external application of SL analog GR24 is a promising approach for stablishing various abiotic stress tolerances in plants (Bhoi et al, 2021). Notably, the exogenous application of GR24 could improve plant growth and photosynthesis under salinity and drought stress in plant (Zulfqar et al, 2020;Bidabadi and Sharif, 2021).…”

Section: Discussionmentioning

confidence: 99%

Strigolactone alleviates the salinity-alkalinity stress of Malus hupehensis seedlings

Bian

Liu

et al. 2022

Front. Plant Sci.

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Salinity-alkalinity stress can remarkably affect the growth and yield of apple. Strigolactone (SL) is a class of carotenoid-derived compounds that functions in stress tolerance. However, the effects and mechanism of exogenous SL on the salinity-alkalinity tolerance of apple seedlings remain unclear. Here, we assessed the effect of SL on the salinity-alkalinity stress response of Malus hupehensis seedlings. Results showed that treatment with 100 μM exogenous SL analog (GR24) could effectively alleviate salinity-alkalinity stress with higher chlorophyll content and photosynthetic rate than the apple seedlings without GR24 treatment. The mechanism was also explored: First, exogenous GR24 regulated the expression of Na+/K+ transporter genes and decreased the ratio of Na+/K+ in the cytoplasm to maintain ion homeostasis. Second, exogenous GR24 increased the enzyme activities of superoxide, peroxidase and catalase, thereby eliminating reactive oxygen species production. Third, exogenous GR24 alleviated the high pH stress by regulating the expression of H+-ATPase genes and inducing the production of organic acid. Last, exogenous GR24 application increased endogenous acetic acid, abscisic acid, zeatin riboside, and GA3 contents for co-responding to salinity-alkalinity stress indirectly. This study will provide important theoretical basis for analyzing the mechanism of exogenous GR24 in improving salinity-alkalinity tolerance of apple.

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Section: Discussionmentioning

confidence: 99%

Strigolactone alleviates the salinity-alkalinity stress of Malus hupehensis seedlings

Bian

Liu

et al. 2022

Front. Plant Sci.

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“…Despite being the most recently discovered class of phytohormones, SLs are already known to have major functions in plant development and plant-microbial communications (Bhoi et al, 2021). One of the first of many identified roles of SLs in plant development was the finetuning of shoot architecture, hence the name "MORE AXILLARY GROWTH" (MAX) given to some of the key Arabidopsis thaliana SL biosynthesis genes.…”

Section: Introductionmentioning

confidence: 99%

Elucidating connections between the strigolactone biosynthesis pathway, flavonoid production and root system architecture in Arabidopsis thaliana

Richmond

Coelho

Wilkinson

et al. 2022

Physiologia Plantarum

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Strigolactones (SLs) are the most recently discovered phytohormones, and their roles in root architecture and metabolism are not fully understood. Here, we investigated four MORE AXILLARY GROWTH (MAX) SL mutants in Arabidopsis thaliana, max3‐9, max4‐1, max1‐1 and max2‐1, as well as the SL receptor mutant d14‐1 and karrikin receptor mutant kai2‐2. By characterising max2‐1 and max4‐1, we found that variation in SL biosynthesis modified multiple metabolic pathways in root tissue, including that of xyloglucan, triterpenoids, fatty acids and flavonoids. The transcription of key flavonoid biosynthetic genes, including TRANSPARENT TESTA4 (TT4) and TRANSPARENT TESTA5 (TT5) was downregulated in max2 roots and seedlings, indicating that the proposed MAX2 regulation of flavonoid biosynthesis has a widespread effect. We found an enrichment of BRI1‐EMS‐SUPPRESSOR 1 (BES1) targets amongst genes specifically altered in the max2 mutant, reflecting that the regulation of flavonoid biosynthesis likely occurs through the MAX2 degradation of BES1, a key brassinosteroid‐related transcription factor. Finally, flavonoid accumulation decreased in max2‐1 roots, supporting a role for MAX2 in regulating both SL and flavonoid biosynthesis.

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“…Strigolactones (SLs) are carotenoid-derived chemicals that are generated in tiny amounts in roots or manufactured by a variety of plant species ( Bhoi et al, 2021 ). Root architecture and development are influenced by SLs ( Marquez-Garcia et al, 2014 ; Jiu et al, 2022 ).…”

Section: Aptitude Of Phytohormones In Stress Tolerancementioning

confidence: 99%

Role of Promising Secondary Metabolites to Confer Resistance Against Environmental Stresses in Crop Plants: Current Scenario and Future Perspectives

et al. 2022

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Plants often face incompatible growing environments like drought, salinity, cold, frost, and elevated temperatures that affect plant growth and development leading to low yield and, in worse circumstances, plant death. The arsenal of versatile compounds for plant consumption and structure is called metabolites, which allows them to develop strategies to stop enemies, fight pathogens, replace their competitors and go beyond environmental restraints. These elements are formed under particular abiotic stresses like flooding, heat, drought, cold, etc., and biotic stress such as a pathogenic attack, thus associated with survival strategy of plants. Stress responses of plants are vigorous and include multifaceted crosstalk between different levels of regulation, including regulation of metabolism and expression of genes for morphological and physiological adaptation. To date, many of these compounds and their biosynthetic pathways have been found in the plant kingdom. Metabolites like amino acids, phenolics, hormones, polyamines, compatible solutes, antioxidants, pathogen related proteins (PR proteins), etc. are crucial for growth, stress tolerance, and plant defense. This review focuses on promising metabolites involved in stress tolerance under severe conditions and events signaling the mediation of stress-induced metabolic changes are presented.

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Contribution of strigolactone in plant physiology, hormonal interaction and abiotic stresses

Cited by 63 publications

References 102 publications

Strigolactone alleviates the salinity-alkalinity stress of Malus hupehensis seedlings

Strigolactone alleviates the salinity-alkalinity stress of Malus hupehensis seedlings

Elucidating connections between the strigolactone biosynthesis pathway, flavonoid production and root system architecture in Arabidopsis thaliana

Role of Promising Secondary Metabolites to Confer Resistance Against Environmental Stresses in Crop Plants: Current Scenario and Future Perspectives

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