The presence of chloroplasts in guard cells from leaf epidermis, coleoptile, flowers, and albino portions of variegated leaves was established by incident fluorescence microscopy, thus confirming the notion that guard cell chloroplasts are remarkably conserved. Room temperature emission spectra from a few chloroplasts in a single guard cell of Vicia faba showed one major peak at around 683 nano...

Tropical fish stocks are perceived not to exhibit seasonality in growth. For this reason the standard von Bertalanffy growth function (VBGF) has been used widely fit of tropical populations compared seasonally-oscillating VBGF (soVBGF), which is seldom fisheries. To advocate for use soVBGF assessment stocks, study outputs two methods using ELEFAN_GA_boot on oysters from Densu Delta, Ghana. Samp...

Programmed cell death (PCD) in petals provides a model system to study the molecular aspects of organ senescence. In this study, the very early triggering signal for PCD during the senescence process from young green buds to 14-d-old petals of Tulipa gesneriana was determined. The opening and closing movement of petals of intact plants increased for the first 3 d and then gradually decreased. D...

Five cDNA clones encoding 1-aminocyclopropane-1-carboxylic acid (ACC) oxidase (ACO) were isolated from tulip (Tulipa gesneriana L.) by differential screening of the petal cDNA library and were designated as TgACO1, TgACO2, TgACO3, TgACO4 and TgACO5. The deduced amino acid sequences exhibited similarity to ACO proteins from other plant species. Among these proteins, TgACO1-4 have high similarity...

Tulipa gesneriana has rich cultivars with abundant flower colors; among them, black tulips have become precious for their rareness in nature. It is of great significance to understand its color formation mechanism breeding new a blackish the future. In this present study, petals at five developmental stages ‘Queen Night’ (shorted ‘QN’), typical tulip cultivar, were collected identity flavonoid ...