Translation of Strigolactones from Plant Hormone to Agriculture: Achievements, Future Perspectives, and Challenges

Chesterfield, Rebecca J.; Vickers, Claudia E.; Beveridge, Christine A.

doi:10.1016/j.tplants.2020.06.005

Cited by 77 publications

(53 citation statements)

References 154 publications

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“…For example, the commonly used synthetic SL analog GR24 is 100-fold less potent at stimulation of Orobanche minor germination than natural SLs ( 56 ), and (+)-GR24 is 100 times more active than (-)-GR24 as a branching factor ( 57 ). Unfortunately, many conclusions on the biological effects of SLs are obtained using racemic GR24 ( 6, 8, 58 ). In addition, SLs of subtle structural differences may exhibit different bioactivities ( 49, 59 ).…”

Section: Discussionmentioning

confidence: 99%

“…Later, they were also identified as a novel class of plant hormones that control shoot branching, leaf growth and senescence, and promote the formation of lateral root and growth of primary root (3). SLs thus have been considered as promising agrochemicals, such as biostimulants that enhance the nutrient uptake efficiency through modulating plant-AMF symbiotic association (4)(5)(6). To date, more than 30 natural SLs have been isolated (fig.…”

Section: Introductionmentioning

confidence: 99%

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Establishment of Strigolactone-Producing Bacterium-Yeast Consortium

Zhou

et al. 2021

Preprint

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Strigolactones (SLs) are a class of phytohormones playing diverse roles in plant growth and development, yet the limited access to SLs is largely impeding SL-based foundational investigations and applications. Here, we developed Escherichia coli-Saccharomyces cerevisiae consortia to establish a microbial biosynthetic platform for the synthesis of various SLs, including carlactone, carlactonic acid, 5-deoxystrigol (5DS), 4-deoxyorobanchol (4DO), and orobanchol (OB). The SL-producing platform enabled us to conduct functional identification of CYP722Cs from various plants as either OB or 5DS synthase. It also allowed us to quantitatively compare known variants of plant SL biosynthetic enzymes in the microbial system. The titer of 5DS was further enhanced through pathway engineering to 0.0473 mg/L. This work provides a unique platform for investigating SL biosynthesis and evolution and lays the foundation for developing SL microbial production process.

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Section: Discussionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Establishment of Strigolactone-Producing Bacterium-Yeast Consortium

Zhou

et al. 2021

Preprint

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“…SLs can also be optimized to improve nutrient assimilation, thus favoring crop enhancement [ 85 , 86 ].…”

Section: Sls For Sustainable Agriculture: the First Translationmentioning

confidence: 99%

Strigolactones, from Plants to Human Health: Achievements and Challenges

2021

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Strigolactones (SLs) are a class of sesquiterpenoid plant hormones that play a role in the response of plants to various biotic and abiotic stresses. When released into the rhizosphere, they are perceived by both beneficial symbiotic mycorrhizal fungi and parasitic plants. Due to their multiple roles, SLs are potentially interesting agricultural targets. Indeed, the use of SLs as agrochemicals can favor sustainable agriculture via multiple mechanisms, including shaping root architecture, promoting ideal branching, stimulating nutrient assimilation, controlling parasitic weeds, mitigating drought and enhancing mycorrhization. Moreover, over the last few years, a number of studies have shed light onto the effects exerted by SLs on human cells and on their possible applications in medicine. For example, SLs have been demonstrated to play a key role in the control of pathways related to apoptosis and inflammation. The elucidation of the molecular mechanisms behind their action has inspired further investigations into their effects on human cells and their possible uses as anti-cancer and antimicrobial agents.

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“…Strigolactones (SLs) have also been reported as mediators for the acclimatization of plants to water deprivation [33] and nutrient deficit conditions [34,35]. SL and the phytohormone ABA share the same biosynthetic precursor, both being carotenoid-derived terpenoid lactones [36].…”

Section: Introductionmentioning

confidence: 99%

Can Biostimulants Increase Resilience of Hydroponically-Grown Tomato to Combined Water and Nutrient Stress?

et al. 2021

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In the current experiment, tomato (Solanum lycopersicum cv. Nostymi F1) was cultivated in an open hydroponic system under optimal or stress conditions caused by reducing the supply of nutrient solution by 35–40% and treated with biostimulants to test whether their application can increase crop resilience to combined shortage of nutrients and water. The four different biostimulant treatments were: (i) no biostimulant application, (ii) treatment with the protein-based biostimulants COUPÉ REGENERACIÓN Plus and PROCUAJE RADICULAR provided by EDYPRO, (iii) treatment with a novel biostimulant based on strigolactones, provided by STRIGOLAB and (iv) treatment with MAXICROP, a commercial product consisting of seaweed extracts. Combined stress significantly reduced NO3−, P, and K in the root zone of tomato plants. However, the application of the strigolactone-based biostimulant to stressed plants maintained NO3− in the root zone to similar levels with non-stressed plants during the first and third months of cultivation. The biostimulants did not increase the vegetative plant biomass at 70 and 120 days after transplanting (DAT). The strigolactone-based biostimulant increased early leaf area development (70 DAT) and early fruit production compared to untreated plants but had no effect on total tomato yield (120 DAT). Maxicrop also increased early fruit yield, while Edypro decreased early and total yield compared to the control plants, an effect ascribed to overdosing, as the application rate was that suggested for soil-grown crops, while the plants were cultivated on an inert substrate. Strigolactone-based biostimulant and Maxicrop could be further studied by testing multiple applications during the cropping period.

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Translation of Strigolactones from Plant Hormone to Agriculture: Achievements, Future Perspectives, and Challenges

Cited by 77 publications

References 154 publications

Establishment of Strigolactone-Producing Bacterium-Yeast Consortium

Establishment of Strigolactone-Producing Bacterium-Yeast Consortium

Strigolactones, from Plants to Human Health: Achievements and Challenges

Can Biostimulants Increase Resilience of Hydroponically-Grown Tomato to Combined Water and Nutrient Stress?

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