The strigolactone receptor SlDWARF14 plays a role in photosynthetic pigment accumulation and photosynthesis in tomato

Li, Zhifei; Pi, Ying; Zhai, Changsheng; Xu, Dong; Ma, Wenhui; Chen, Hong; Li, Yang; Wu, Hongmiao

doi:10.1007/s00299-022-02908-4

Cited by 7 publications

(5 citation statements)

References 76 publications

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“…The application of exogenous strigolactone affects the chlorophyll fluorescence parameters and chlorophyll content in plants, which results in an improvement in photosynthetic efficiency 36 . The strigolactone receptor SlDWARF14 promotes the photosynthetic capacity of tomato by improving the accumulation of photosynthetic pigments and the expression levels of Cab protein genes 37 . In this study, the exogenous strigolactone (GR24) at 1 μmol/L increased the photosynthetic pigment content in S. nigrum var.…”

Section: Discussionmentioning

confidence: 60%

“…36 The strigolactone receptor SlDWARF14 promotes the photosynthetic capacity of tomato by improving the accumulation of photosynthetic pigments and the expression levels of Cab protein genes. 37 In this study, the exogenous strigolactone (GR24) at 1 μmol/L increased the photosynthetic pigment content in S. nigrum var. humile under Cd stress to some extent, while the exogenous strigolactone (GR24) at 2 μmol/L had no significant effects.…”

Section: Discussionmentioning

confidence: 67%

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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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Section: Discussionmentioning

confidence: 60%

Section: Discussionmentioning

confidence: 67%

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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“…SLs impact the process of senescence by regulating various genetic components involved in photosynthesis ( Mayzlish-Gati et al., 2010 ; Mashiguchi et al., 2021 ; Li et al., 2022 ; Schiphorst et al., 2022 ). For example, the tomato SL biosynthesis Sl-ORT1 mutant showed reduced chlorophyll content and lower levels of light-harvesting genes (e.g., CAB and RUBISCO) ( Mayzlish-Gati et al., 2010 ).…”

Section: Discussionmentioning

confidence: 99%

DWARF27 and CAROTENOID CLEAVAGE DIOXYGENASE 7 genes regulate release, germination and growth of gemma in Marchantia polymorpha

Jibran,

Tahir,

Andre

et al. 2024

Front. Plant Sci.

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Strigolactones (SLs), a class of carotenoid-derived hormones, play a crucial role in flowering plants by regulating underground communication with symbiotic arbuscular mycorrhizal fungi (AM) and controlling shoot and root architecture. While the functions of core SL genes have been characterized in many plants, their roles in non-tracheophyte plants like liverworts require further investigation. In this study, we employed the model liverwort species Marchantia polymorpha, which lacks detectable SL production and orthologs of key SL biosynthetic genes, including CAROTENOID CLEAVAGE DIOXYGENASE 8 (CCD8) and MORE AXILLARY GROWTH 1 (MAX1). However, it retains some SL pathway components, including DWARF27 (D27) and CCD7. To help elucidate the function of these remaining components in M. polymorpha, knockout mutants were generated for MpD27–1, MpD27–2 and MpCCD7. Phenotypic comparisons of these mutants with the wild-type control revealed a novel role for these genes in regulating the release of gemmae from the gemma cup and the germination and growth of gemmae in the dark. Mpd27–1, Mpd27–2, and Mpccd7 mutants showed lower transcript abundance of genes involved in photosynthesis, such as EARLY LIGHT INDUCED (ELI), and stress responses such as LATE EMBRYOGENESIS ABUNDANT (LEA) but exhibited higher transcript levels of ETHYLENE RESPONSE FACTORS (ERFs) and SL and carotenoid related genes, such as TERPENE SYNTHASE (TS), CCD7 and LECITHIN-RETINAL ACYL TRANSFERASE (LRAT). Furthermore, the mutants of M. polymorpha in the SL pathway exhibited increased contents of carotenoid. This unveils a previously unrecognized role for MpD27–1, MpD27–2 and MpCCD7 in controlling release, germination, and growth of gemmae in response to varying light conditions. These discoveries enhance our comprehension of the regulatory functions of SL biosynthesis genes in non-flowering plants.

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“…This binding leads to the recruitment of the F-box protein MAX2, which targets the repressor proteins, DWARF53 and SMXLs, for ubiquitination and subsequent degradation in the proteasome, resulting in the activation of various SLs downstream target genes (Wang et al 2020). The receptor D14, which belongs to the α/β-hydrolase enzyme superfamily, is conserved in all land plants (Waters et al 2017;Bythell-Douglas et al 2017) and recently has been characterized in tomato (Solanum lycopersicum) (Li et al 2022) Tomato is a major horticultural crop of global importance, and the parasitic weed P. aegyptiaca endangers its cultivation in vast areas worldwide (Joel et al 2013). Several strategies have been developed to cope with broomrapes (Eizenberg and Goldwasser, 2018).…”

Section: Introductionmentioning

confidence: 99%

Tomato mutants reveal root and shoot strigolactones involvement in branching and broomrape resistance

Karniel,

Koch,

Nun

et al. 2024

Preprint

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The phytohormones strigolactones (SLs) control root and shoot branching and are exuded from roots into the rhizosphere to stimulate interaction with mycorrhizal fungi. The exuded SLs serve as signaling molecules for the germination of parasitic plants. The broomrape Phelipanche aegyptiaca is a widespread noxious weed in several crop plants, including tomato (Solanum lycopersicum). 'In silico' screening of tomato (M82) mutants identified three lines that showed significantly increased branching. Two mutants, SHOOT BRANCHING 1 (sb1) and SHOOT BRANCHING 2 (sb2), lack SLs due to loss of function mutations in the genes for the carotenoid cleavage dioxygenase enzymes CCD7, and CCD8, respectively. Beyond the increased branching, these mutants were completely resistant to infection by P. aegyptiaca. The third branching mutant, SHOOT BRANCHING 3 (sb3), carried a point mutation in the SLs receptor DWARF14 and was found to be highly susceptible to P. aegyptiaca. SL concentration in roots of the sb3 was two-fold higher than in the wild type due to the upregulation of transcription of SL biosynthesis genes. This phenomenon suggests that the steady-state level of SLs is regulated by a feedback mechanism that involves the SL signaling pathway. Grafting experiments showed that sb1 and sb2 rootstocks protected wild-type tomato scions from P. aegyptiaca infection without a significant yield loss, offering a solution to the broomrape crisis. These results also demonstrate that strigolactones synthesized in the shoots are involved in the control of shoot branching.

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The strigolactone receptor SlDWARF14 plays a role in photosynthetic pigment accumulation and photosynthesis in tomato

Cited by 7 publications

References 76 publications

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

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

DWARF27 and CAROTENOID CLEAVAGE DIOXYGENASE 7 genes regulate release, germination and growth of gemma in Marchantia polymorpha

Tomato mutants reveal root and shoot strigolactones involvement in branching and broomrape resistance

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