introduction: pumpkin is one of the agricultural products that despite its very low price, is known as a rich source of carotenoids with high antioxidant activity. iran is one of the good producers of pumpkin at the world with fifth rank which is cultivated at provinces like mazandaran, guilan, khorasan, and hamedan and so on extensively. pumpkin is almost available for entire the year but many...

BACKGROUND: Biofertilizers, like amino acids, are used to reduce drought stress damage to plants and improve physiological factors, thereby increasing plant yield in arid and semi-arid regions. Seaweed extract has a beneficial effect on plant growth due to its growth hormones and elements such as iron, copper, zinc, cobalt, molybdenum, manganese and nickel, vitamins and amino a...

The ascomycete fungus Neurospora is present in many parts of the world, in particular in tropical and subtropical areas, where it is found growing on recently burned vegetation. We have sampled the Neurospora population across Spain. The sampling sites were located in the region of Galicia (northwestern corner of the Iberian peninsula), the province of Cáceres, the city of Seville, and the two ...

Red (retro)-carotenoids accumulate in chloroplasts of Buxus sempervirens leaves during the process of winter leaf acclimation. As a result of their irregular presence, different leaf colour phenotypes can be found simultaneously in the same location. Five different colour phenotypes (green, brown, red, orange, and yellow), with a distinct pattern of pigment distribution and concentration, have ...

abstract an investigation was undertaken to ascertain the influence of hydro-alcoholic solutions on plant growth as well as quality attributes of strawberry fruits. the mother plants of strawberry (fragaria ananasa cv. gaviota) were subjected to various aqueous solutions of ethanol (15, 30%), methanol (15, 30%) and the mixture of ethanol + methanol (15 or 30%) plus the control (water only) as f...

fruit waste extract was selected as the sole substrate for carotenoid production and the effect of parameters like ph, temperature and agitation have been studied. a two-step simple sequential strategy was employed for the optimization of carotenoid production by rhodotorula rubra. in the first step, one factor at a time was employed to evaluate the impact of ph on carotenoid production. the ou...

Electron paramagnetic resonance (EPR) spin-labeling methods were used to study the effects of carotenoids on the physical properties of saturated phosphatidylcholine (PC) membranes to evaluate the contribution of the terminal hydroxyl groups of xanthophyll molecules to the carotenoid-membrane interaction. Effects of the dipolar, terminally dihydroxylated carotenoid lutein on membrane phase tran...

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...