Abstract Kaolinite is a phyllosilicate clay of type 1:1 which usually associated with iron oxides in nature. The abundant Terra Rossa soils located the Gunungkidul, karst area. Based on structure and nature it’s charge, it has potential to adsorb anionic heavy metals, especially hexavalent chromium. Heavy metal chromium form very dangerous for human health mostly produced from waste leather tan...

Photosynthesis, Electron Transport, Chlorophyll Fluorescence, Photosystem II, BAS 13-338 Addition of BAS 13-338 (4-chloro-5-dim ethylam ino-2-phenyl-3(2H )-pyridazinone) to a sus­ pension of chloroplast thylakoids caused an increase in the / level o f chlorophyll fluorescence induction without affecting the F0 level and with a slight decrease in the Fmax level in a manner similar to the additio...

From stroma-freed chloroplasts of Antirrhinum m ajus polypeptides with the apparent molecular weights 44 000, 26 000 and 20 000 were isolated. The antiserum to a polypeptide with the moleculair weight 44 000 inhibits the photoreduction of anthraquinone-2-sulfonate with dichlorophenol indophenol/ascorbate when the concentration of the electron donor dichlorophenol indophenol is low. The antiseru...

The effects of mineral deficiencies on plant growth have been studied for many years, but little use has been made of mineral deficiency as a tool for understanding the photosynthetic process. Hill reaction rates of chloroplasts from mineraldeficient plants were measured by Spencer and Possingham (1), who found lower rates per unit of chlorophyll in all deficiencies except iron. Kessler's (9) s...