Identification of Growth Inhibitors in Helianthus Leaves

Photophosphorylation in Attached Leaves of Helianthus annuus at Low Water Potentials.

The in situ response of photophosphorylation and coupling factor activity to low leaf water potential (psi(L)) was investigated using kinetic spectroscopy to measure the flash-induced electrochromic absorption change in attached sunflower (Helianthus annuus L. cv IS894) leaves. The electrochromic change is caused by the formation of an electric potential across the thylakoid membrane associated...

Endogenous growth promotors and inhibitors in tahiti lime

Identification of α-Glucosidase Inhibitors From Psidium guajava Leaves and Syzygium cumini Linn. Seeds

We screened for α-glucosidase inhibitors from 12 traditional medicinal plants used for the treatment of diabetes. Potent α-glucosidase inhibitory activity was found in aqueous extract of Psidium guajava leaves and Syzygium cumini Linn seed extract. Active principles inhibiting α-glucosidase were isolated and identified as apigenin 7O-glucoside in the S.cumini Linn seed extract and Dihydro-3,3’,...

Identification of hydroxy-plastochromanol in Arabidopsis leaves.

In the present study we have identified hydroxy-plastochromanol in plants for the first time. This compound was found both in low light and high light-grown Arabidopsis plants, however, under high light stress its level was considerably increased. Hydroxy-plastochromanol accumulated also during ageing of leaves of low light-grown plants, similarly as in the case of other prenyllipids. Our resul...

Identification of flavonoids in leaves of seven wild growing Salvia L. (Lamiaceae) species from Iran

This study documents the flavonoid constituents of seven Salvia species in Iran namely S.atropatana Bunge, S. limbata C. A. Mey, S. sclarea L., S. ceratophylla L., S. multicaulis Vahl.,S. hydrangea Dc. ex Benth., and S. eremophila Boiss. The studied species were collected fromtheir natural habitats in Iran and were analyzed for their flavonoid constituents using twodimensionalthin layer chromat...