to comparison the photosynthetic parameters and leaf chlorophyll content and fluorescence of safflower (carthamus tinctorios l.) cultivars under salinity stress, a pot experiment was carried out as factorial based on completely randomized design with three replications in summer 2011 in university of yasouj. first factor included four salinity levels (zero, 75, 150 and 225 mm (formed as 20 to 1...

In this study, we have characterized the role of carotenoids and chlorophyll in the compatible interaction between the sedentary root knot nematode (RKN) Meloidogyne graminicola and the monocot model plant rice (Oryza sativa). Previous transcriptome data showed a differential expression of carotenoid and chlorophyll biosynthesis genes in nematode-induced giant cells and gall tissue. Metabolite ...

The effects of UV-B radiation on the amount of chlorophyll a, b, carotenoids, flavonoids, anthocyanins, and polyphenols of three soybean cultivars was studied. After germination in the incubator, plants were put in pots of soil and during 3 weeks and irrigated with Hoagland solution every day. After 3 weeks, plants were exposed to UV-B for 20 min every day for a week. In each cultivar, UV-B red...

Raphanus sativus L., /7-Carotene, Carotenoid Composition, Chlorophyll a-Proteins, LightHarvesting Chlorophyll, Localization of Carotenoids, Lutein, Neoxanthin The uneven distribution of carotenoids and chlorophylls between several chlorophyllcarotenoid-proteins isolated from radish chloroplasts by SDS-polyacrylamide-gel electrophoresis is described. Lutein and neoxanthin are enriched in the lig...

Background & Aim: The pigments inside the leaf chloroplasts receive sunlight energy and transport it to photosynthesis reaction center. The most important of these pigments is chlorophyll. In this study, the pigments existence in medicinal plant, sumac (Rhus coriaria L.), was investigated at Biotechnology Laboratory, Isfahan University of Technology. Experimental: Experiments were per...

Background & Aim: The pigments inside the leaf chloroplasts receive sunlight energy and transport it to photosynthesis reaction center. The most important of these pigments is chlorophyll. In this study, the pigments existence in medicinal plant, sumac (Rhus coriaria L.), was investigated at Biotechnology Laboratory, Isfahan University of Technology. Experimental: Experiments were per...

The chlorophylls are the main pigments in green plants, algae and other photosynthetic microorganisms. They belong to a class of pyrrole ring compounds known as porphins. Derivatives of porphins are called porphyrins. Phorbin, a porphyrin formed by the addition of another ring structure, serves as the basis for all chlorophyll molecules (Fig. 2.1). Different types of chlorophyll may arise depen...

Hyperspectral confocal fluorescence imaging provides the opportunity to obtain individual fluorescence emission spectra in small ( approximately 0.03-microm(3)) volumes. Using multivariate curve resolution, individual fluorescence components can be resolved, and their intensities can be calculated. Here we localize, in vivo, photosynthesis-related pigments (chlorophylls, phycobilins, and carote...

in order to study the effect of foliar zinc spraying on photosynthetic pigments and yield of chickpea under water stress conditions, a factorial experiment carried out based on randomized completely block design (rcbd) with three replications in university of mohaghegh ardabili agricultural research station in 2012. the treatments consisted of three levels of irrigation (irrigated at planting, ...