Water vapor condensation on vertical tube bundle from biofuel flue gas (2024)

Comparative sensitivity of plant root meristems to acute gamma irradiation according to stationary phase cell distribution and DNA content

CYTOLOGIA, 1982

Adaptation to ionizing radiation of higher plants: From environmental radioactivity to chernobyl disaster

Journal of Environmental Radioactivity, 2020

Effects of Chronic Ionizing Radiation and Interactions with Other Environmental and Climatic Factors on Plant Growth and Development

2017

Plants are the main supportive human being system. Under insistently exposure to mutagens, such as low ionizing doses radiation, enhance level UV-B radiation, chemicals, heat, drought, and cold, they are enforces either to adapt either to die. Ordinarily is accepted that the living organisms under the influence of environmental stress factors, always acquire adaptive responses, but the available data still stay controversial. The effects of chronic exposure on living organisms and populations still stay insufficiently explored, and denote a much needed field of research. The aim of a review is to summarize published data for consequences of chronic ionizing radiation on plant growth and development. Epigenetic and genetic alterations were registered in plants arising under combined influence of different environmental stress conditions. Nevertheless, there are still not enough information for the combined effects of ionizing radiation, enhance level UV-B radiation, which are already registered as results from climatic changes and so expected to have important role in the future on plants populations. The increased pollution of the environment is out of the doubt, but the knowledge about mechanisms and the range of plants to adapt is still insufficient.

Cytogenetic Effects of Radiation from Projector on Meristematic Cells of Allium Cepa (Onions) Root

Journal of Applied Sciences and Environmental Management

The objective of this study is to evaluate the cytogenetic consequences of exposing root tips of Allium cepa (onion) to varying distances and durations of radiation from the projector and treatment with sodium azide and distilled water using standard methods. The sodium azide and distilled water served as positive and negative controls respectively. Results obtained in this study revealed that radiations from the projector induced eleven chromosomal aberrations which included; binucleate cells, sticky chromosomes, vacuolated cells, star metaphase, bride chromosome, vagrant chromosome, faculty polarity, C-mitosis, spindle fibre disturbance, ghost cells, and fragmented chromosomes. This suggests that radiation from the projector poses danger to genetic systems. The higher mitotic index of irradiated onion root tip cells compared to negative control groups indicates that radiation from the projector exhibited a promontory effect on cell division. The findings in this study revealed tha...

Evaluation of toxic and genotoxic effects of low-level 137Cs ionising radiation on plants

Arhiv za higijenu rada i toksikologiju, 2006

The aim of this study was to evaluate the impact of low internal exposure to 137Cs on L. sativum meristem cells and Tradescantia stamen hair cells. It also compared the impact of 137Cs internal and external irradiation of similar level on the plant seed germination and root growth. Compared to control, the tested internal (0.0007 mGy to 0.7 mGy) and external (0.04 mGy to 5.5 mGy) 137Cs ionising radiation doses stimulated the elongation of L. sativum roots by 11% to 12% and 24% to 33%, respectively. Internal 137Cs exposure (0.0003 mGy to 0.5 mGy) for 14 days caused 1.2% to 1.6% of somatic mutations and 19% to 87% of non-viable stamen hair in Tradescantia.

Search of radiation hormesis in plants: irradiation of the cress (Lepidium sativum L.)

Cytogenetic Effect of Low Dose γ-Radiation in Plant Test-Systems: Non-Linear Dose-Effect Relationship

rri.kyoto-u.ac.jp

Is the cytoskeleton involved in the irradiation-induced abnormal morphogenesis of coniferous plants?

Cell Biology International, 2003

Impact assessment of long-term chronic radiation exposure on plant populations

Studies that examine biological effects on non-human biota in natural settings provide a unique opportunity for obtaining information about the potential biological hazard associated with radioactive contamination. The results of long-term field study in the Bryansk Region, Russia, affected by the Chernobyl accident are discussed. Plant populations growing in areas with relatively low levels of pollution are characterized by the increased level of both cytogenetic alterations and genetic diversity. In particular, radioactive contamination of the plants' environment activates genetic mechanisms, changing a population's resistance to exposure. However, there are radioecological situations where enhanced radioresistance has not evolved or has not persisted. A development of a system for protection of the environment from ionizing radiation should be based on a clear understanding of these effects and their contribution to response of populations.

A Review on the Stimulatory Effects of Ionizing Radiation Exposure Effects on Plants

A huge number of works had been conducted on several aspects of ionizing radiation exposure both natural and artificial and their major impacts. Experiments were conducted with different sources and doses of ionizing radiation on diverse plant species to observe the harmful effects of environmental accidental discharge of this radiation on the plants and also to provide the agricultural system with a better tool for plant development by utilizing the beneficial aspects of this radiation stimulation. Reports have shown some beneficial aspects of ionizing radiation in growth, germination, survival rates, increased yields, mutant varieties and post-harvest storage by delayed germination and pest eradication. In this review we report the main findings from the studies conducted on the effects of ionizing radiation focusing mainly on the beneficial effects. Most of the studies suggest that the low doses are quite stimulatory while higher ones are found to be inhibitory.