Fellowship of the rings: a saga of strigolactones and other small signals

Machin, Darren C.; Hamon‐Josse, Maxime; Bennett, Tom

doi:10.1111/nph.16135

Cited by 76 publications

(63 citation statements)

References 95 publications

(228 reference statements)

Supporting

Mentioning

Contrasting

Order By: Relevance

“…This may reflect the evolutionary origin of interactions between the KAR receptor and SMXL-type repressor proteins, although KAI2 and SMXL6 genes are not thought to be coexpressed normally. The demonstration that KAR and SL signaling use the same mechanism of MAX2-dependent SMXL polyubiquitination and proteolysis provides strong support for the proposed coevolution of SL signaling and SMXL functions from an ancestral KAI2-SMAX1 system (Moturu et al, 2018;Machin et al, 2020).…”

Section: Coevolution Of the Smxl And Kai2/d14 Familiesmentioning

confidence: 71%

Strigolactone and Karrikin Signaling Pathways Elicit Ubiquitination and Proteolysis of SMXL2 to Regulate Hypocotyl Elongation in Arabidopsis

et al. 2020

View full text Add to dashboard Cite

Strigolactones (SLs) and karrikins (KARs) are related butenolide signaling molecules that control plant development. In Arabidopsis (Arabidopsis thaliana), they are recognized separately by two closely related receptors but use the same F-box protein MORE AXILLARY GROWTH2 (MAX2) for signal transduction, targeting different members of the SMAX1-LIKE (SMXL) family of transcriptional repressors for degradation. Both signals inhibit hypocotyl elongation in seedlings, raising the question of whether signaling is convergent or parallel. Here, we show that synthetic SL analog GR24 4DO enhanced the interaction between the SL receptor DWARF14 (D14) and SMXL2, while the KAR surrogate GR24 ent-5DS induced association of the KAR receptor KARRIKIN INSENSITIVE2 (KAI2) with SMAX1 and SMXL2. Both signals trigger polyubiquitination and degradation of SMXL2, with GR24 4DO dependent on D14 and GR24 ent-5DS dependent mainly on KAI2. SMXL2 is critical for hypocotyl responses to GR24 4DO and functions redundantly with SMAX1 in hypocotyl response to GR24 ent-5DS. Furthermore, GR24 4DO induced response of D14-LIKE2 and KAR-UP F-BOX1 through SMXL2, whereas GR24 ent-5DS induced expression of these genes via both SMAX1 and SMXL2. These findings demonstrate that both SLs and KARs could trigger polyubiquitination and degradation of SMXL2, thus uncovering an unexpected but important convergent pathway in SL-and KAR-regulated gene expression and hypocotyl elongation.

show abstract

Section: Coevolution Of the Smxl And Kai2/d14 Familiesmentioning

confidence: 71%

Strigolactone and Karrikin Signaling Pathways Elicit Ubiquitination and Proteolysis of SMXL2 to Regulate Hypocotyl Elongation in Arabidopsis

et al. 2020

View full text Add to dashboard Cite

show abstract

“…116) Further studies are needed to clarify when and how SL degradation occurs after signal perception. 117)…”

Section: Perception and Signal Transductionmentioning

confidence: 99%

Recent progress in the chemistry and biochemistry of strigolactones

Yoneyama

2020

J. Pestic. Sci.

View full text Add to dashboard Cite

Strigolactones (SLs) are plant secondary metabolites derived from carotenoids. SLs play important roles in the regulation of plant growth and development in planta and coordinate interactions between plants and other organisms including root parasitic plants, and symbiotic and pathogenic microbes in the rhizosphere. In the 50 years since the discovery of the first SL, strigol, our knowledge about the chemistry and biochemistry of SLs has advanced explosively, especially over the last two decades. In this review, recent advances in the chemistry and biology of SLs are summarized and possible future outcomes are discussed.

show abstract

“…These results support the model that karrikin and strigolactone responses are mediated by different subclades of the SMXL family, and further support the case for similar butenolide signaling pathways that evolved through ancient KAI2 and SMXL duplications [ 148 ]. Summarizing all evidence, it was pointed out that despite massive explanations, there is still a huge need for further investigations of this classic family [ 149 ].…”

Section: Molecular Mechanism In Plant Of Plant-derived Smokementioning

confidence: 99%

Plant-Derived Smoke Affects Biochemical Mechanism on Plant Growth and Seed Germination

Khatoon

Rehman

Aslam

et al. 2020

IJMS

View full text Add to dashboard Cite

The role of plant-derived smoke, which is changed in mineral-nutrient status, in enhancing germination and post-germination was effectively established. The majority of plant species positively respond to plant-derived smoke in the enhancement of seed germination and plant growth. The stimulatory effect of plant-derived smoke on normally growing and stressed plants may help to reduce economic and human resources, which validates its candidature as a biostimulant. Plant-derived smoke potentially facilitates the early harvest and increases crop productivity. Karrikins and cyanohydrin are the active compound in plant-derived smoke. In this review, data from the latest research explaining the effect of plant-derived smoke on morphological, physiological, biochemical, and molecular responses of plants are presented. The pathway for reception and interaction of compounds of plant-derived smoke at the cellular and molecular level of plant is described and discussed.

show abstract

Fellowship of the rings: a saga of strigolactones and other small signals

Cited by 76 publications

References 95 publications

Strigolactone and Karrikin Signaling Pathways Elicit Ubiquitination and Proteolysis of SMXL2 to Regulate Hypocotyl Elongation in Arabidopsis

Strigolactone and Karrikin Signaling Pathways Elicit Ubiquitination and Proteolysis of SMXL2 to Regulate Hypocotyl Elongation in Arabidopsis

Recent progress in the chemistry and biochemistry of strigolactones

Plant-Derived Smoke Affects Biochemical Mechanism on Plant Growth and Seed Germination

Contact Info

Product

Resources

About