strigolactone

rac-GR24 is a plant hormone analog that mimics the natural germination stimulants for parasitic plant seeds. It induces germination of parasitic plant seeds in the absence of host plants, thereby reducing the seed bank of parasitic plants in soil, and has wide application value in agricultural research.

SL agonist 1, a Strigolactone (SL) agonist, is effective in promoting Arabidopsis seed germination through its recognition by the SL receptors OmKAI2d3 and OmKAI2d4.

OROBANCHOL, a common strigolactone (SL), is the primary typical SL found in root exudates of various plants.

KeIKK5 is an inhibitor of strigolactone (SL) biosynthesis. It significantly reduces the level of 4-deoxyorobol (4-DO) in rice by inhibiting the activity of the CYP711A enzyme. Additionally, KeIKK5 effectively suppresses the germination of root parasitic weeds and can be utilized in research on plant hormone regulation and the development of novel agricultural herbicides.

TIS108, a triazole-type strigolactone biosynthetic inhibitor, impedes embryogenesis in Arabidopsis and diminishes the concentration of 2′-epi-5-deoxystrigol (epi-5DS) in rice [1].

Sphynolactone-7 (SPL7) acts as an agonist for the Striga hyposensitive to light receptor 7 (ShHTL7) found in the parasitic plant Striga hermonthica. SPL7 selectively targets ShHTL7 with an IC50 of 0.31 µM, demonstrating higher specificity compared to ShHTL2-6, ShHTL9-10, and the strigolactone receptor AtD14 at a concentration of 10 µM, though it still inhibits ShHTL8 and ShHTL11 with IC50s of 1.2 and 7.8 µM, respectively. This compound triggers fatal germination of Striga hermonthica seeds in the absence of a host by inducing suicidal germination at a minimum effective concentration of 10 fM. Additionally, SPL7 can reduce the emergence of this obligate parasite from the soil and alleviate Striga hermonthica-induced senescence in maize when applied at a 10 nM concentration to the soil of maize and Striga hermonthica seed co-cultures.

Soporidine is a strigolactone (SL) antagonist and inhibitor of germination in their biological assays. It binds AtHTL and specifically interferes with SL signaling.

Solanacol, a prominent Strigolactone abundant in tomato root exudate, is a canonical orobanchol-type SL released by both tobacco and tomato plants. It has been recognized for its highly selective germination stimulant activity towards P. ramosa 2a seeds.

β-Carotene isomerase (EC 5.2.1.14) is involved in the biosynthetic pathway of strigolactones, a group of plant hormones that facilitate the formation of symbiotic relationships with arbuscular mycorrhizal fungi.