Abstract
Strigolactones (SLs) are a new class of phytohormones that also act as germination stimulants for root parasitic plants, such as Striga spp., and as branching factors for symbiotic arbuscular mycorrhizal fungi. Sources for natural SLs are very limited. Hence, efficient and simple SL analogs are needed for elucidating SL-related biological processes as well as for agricultural applications. Based on the structure of the non-canonical SL methyl carlactonoate, we developed a new, easy to synthesize series of analogs, termed methyl phenlactonoates (MPs), evaluated their efficacy in exerting different SL functions, and determined their affinity for SL receptors from rice and Striga hermonthica. Most of the MPs showed considerable activity in regulating plant architecture, triggering leaf senescence, and inducing parasitic seed germination. Moreover, some MPs outperformed GR24, a widely used SL analog with a complex structure, in exerting particular SL functions, such as modulating Arabidopsis roots architecture and inhibiting rice tillering. Thus, MPs will help in elucidating the functions of SLs and are promising candidates for agricultural applications. Moreover, MPs demonstrate that slight structural modifications clearly impact the efficiency in exerting particular SL functions, indicating that structural diversity of natural SLs may mirror a functional specificity.
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Claims 6
Claim · model-written summary
Most methyl phenlactonoates regulated plant architecture.
Not reportedTaxonComparatorDirection
Verbatim
e0“Most of the MPs showed considerable activity in regulating plant architecture”
Claim · model-written summary
Most methyl phenlactonoates triggered leaf senescence.
Not reportedTaxonComparatorDirection
Verbatim
e0“Most of the MPs showed considerable activity in regulating plant architecture, triggering leaf senescence”
Claim · model-written summary
Most methyl phenlactonoates induced parasitic seed germination.
StrigaNot reportedComparatorDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Most of the MPs showed considerable activity in regulating plant architecture, triggering leaf senescence, and inducing parasitic seed germination”
e1“root parasitic plants, such as Striga spp.”
Claim · model-written summary
Some methyl phenlactonoates outperformed GR24 in modulating Arabidopsis root architecture.
- Taxon
- Arabidopsis
Arabidopsise0 - Treatment
- MPse0
- Outcome
- roots architecturee0
- Direction
- outperformede0
- Comparator
- GR24e0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“some MPs outperformed GR24, a widely used SL analog with a complex structure, in exerting particular SL functions, such as modulating Arabidopsis roots architecture”
Claim · model-written summary
Some methyl phenlactonoates outperformed GR24 in inhibiting rice tillering.
Oryza sativaOrganisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“some MPs outperformed GR24, a widely used SL analog with a complex structure, in exerting particular SL functions, such as modulating Arabidopsis roots architecture and inhibiting rice tillering”
Claim · model-written summary
Small structural changes to methyl phenlactonoates altered efficacy across strigolactone functions.
Not reportedTaxonDirection
Verbatim
e0“slight structural modifications clearly impact the efficiency in exerting particular SL functions”
The same questions in other papers
methyl · growth · Oryza sativa (rice)Positive and negative results
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