This study reveals by in vivo deuterium labeling that in higher plants chlorophyll (Chl) b is converted to Chl a before degradation. For this purpose, de-greening of excised green primary leaves of barley (Hordeum vulgare) was induced by permanent darkness in the presence of heavy water (80 atom % (2)H). The resulting Chl a catabolite in the plant extract was subjected to chemical degradation b...

G row th o f the unicellular b lue-green alga Anacystis nidulans in m edia containing sublethal concentrations o f D C M U -typ e inhibitors o f p hotosynthetic electron transport in strong w hite light gave rise to shade type appearance in this organism , as characterized by an increased ratio o f phycocyanin to chlorophyll and reduced ratios, b oth , o f carotenoids to chlorophyll and o f tot...

Isoelectrofocusing has been used to separate various chlorophyll-protein complexes of pho­ tosystem two (PS II). Light-harvesting complexes containing chlorophyll a and chlorophyll b (LHC II) were located in bands having p/s in the region of 4.5. At slightly higher pH other light-harvesting complexes containing little or no chlorophyll b were found. In the most basic region of the isoelectrofoc...

Greenhouse experiments in a completely randomized design were carried out to investigate the effects of nitroxin fertilizer (0, 1 and 2 li/ha) on morphological and physiological traits of Amaranthus retroflexus in 2013. The traits in the study included plant height, fresh and dry weight of shoots, roots, stem and leaf, Chlorophyll a, chlorophyll b, total chlorophyll, carotenoids, anthocyanin, a...