The spatial heterogeneity of stomatal closure in response to rapid desiccation of excised well-watered Tradescantia virginiana leaves grown at moderate (55%) or high (90%) relative air humidity (RH) was studied using a chlorophyll fluorescence imaging system under non-photorespiratory conditions. Following rapid desiccation, excised leaves grown at high RH had both a greater heterogeneity and a...

Tradescantia 4430 clone stamen hair mutation (Trad-SHM) bioassay was used to evaluate the genotoxicity of a herbicide composed of triazines (atrazine and simazine) after in situ exposure. Thirty plant pots were exposed during the herbicide application (test group) and a control group was maintained in a greenhouse (control group). Genotoxicity was expressed in terms of pink mutation events (EMP...

Polen de Commelinaceae y Pontederiaceae (Commelinales) humedales rioplatenses (Argentina). Se estudiaron los caracteres granos polen que crecen en áreas rioplatenses. Los estudios se realizaron con microscopio óptico electrónico barrido. actualizaron conocimientos previos sobre elementos esos grupos, describió por primera vez el Pontederia rotundifolia Tradescantia cerinthoides. ambas familias ...

CENTRIFUGATION during or after a dose of radiation has been found to increase the yield of chromosome aberrations in Tradescantia microspores and Vicia faba root meristems (SAX 1943; WOLFF and VON BORSTEL 1954; ANDERSON 1955). These observations suggested that altered positional arrangement of chromosome strands in the interphase nuclei, arising from centrifugation, resulted in reduced restitut...

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Present investigation was performed to determine the ability of purple plant (Tradescantia pallida L.) for removing heavy metals from a contaminated soil particularly nickel, with aid different types organic amendments. Results metal content after application fertilizers were: maximum values (ppm) V, Cr, Ni, Mn, Cu, Zn, As, Mo, Cd, Pb and Ag were respectively: 275.437, 284.807 (control 1), 265....

Nitric oxide (NO) is a very active molecule involved in many and diverse biological pathways where it has proved to be protective against damages provoked by oxidative stress conditions. In this work, we studied the effect of two NO donors, sodium nitroprusside (SNP) and S-nitroso-N-acetylpenicillamine SNP-treated on the response of wheat (Triticum aestivum) to water stress conditions. After 2 ...

Urban gardening is a growing global phenomenon with a positive impact on society. Despite several associated benefits, growing vegetables in urban gardens that are localized in highly polluted areas poses questions about the safety of the produced food. Therefore, the identification of risk factors that result in possible deleterious effects to human health is important for realizing all of the...