Molecular responses of plant cells to UV-B radiation
نویسنده
چکیده
UV-B radiation (UV-B: 280-320 nm) can cause a wide range of responses in plant cells. These responses depend on the perception of the UV-B radiation, signal transduction mechanisms and modification of gene expression. Studies over the last ten years have revealed a complex molecular response of plant cells to UV-B radiation. Specific changes in gene activity take place and a number of signal transduction pathways are established. In addition, other environmental parameters strongly influence the UV-B-induced response. Although molecular studies have advanced our knowledge, our understanding of UV-B-induced cellular changes remains limited compared to other areas of plant photobiology/molecular biology.
منابع مشابه
Growth and development responses to UV-B exclusion in crops
UV-B radiation affects crop plants. Growing interest has been shown in studying the effectsof UV-B radiation exclusion on crops since 1993. This article summarized the generalconsequences of UV-B radiation exclusion on crop plants from the aspacts of plant morphology,growth and development. UV-B exlusion has promoting effects on plant height, internodeand leaf size. UV-B exclusion increases roo...
متن کاملMorphological and Biochemical Responses of Basil Plant Under Ultraviolet Radiation-B and Deficit Irrigation Under Greenhouse Conditions
Environmental stresses such as deficit irrigation and ultraviolet radiation can influence plant growth and development. Among the environmental variables, ultraviolet radiation is an important factor in plant response to other stresses, such as deficit irrigation. The purpose of this study was to investigate the effects of ultraviolet B radiation (UV-B), irrigation stress and combined effects o...
متن کاملChanges in Physiological and Biochemical Parameters of Gourd (Cucurbita pepo L.) Two Varieties under Drought and UV-B Radiation. Nobar Hajihosseinlo*, Siavash Hosseini Sarghein and Rashid Jamei
It emerged recently that there is an inter-relationship between drought and Ultraviolet-B (UV-B) radiation in plant responses, in that both stresses provoke an oxidative burst. The objective of the present investigation was to study the effect of drought stress, UV-B radiation and the combined effects of UV-B and drought stresses on two cultivars of gourd seedling. The gourd plants were grown w...
متن کاملEffects of UV B and UV C radiation on viability, growth, and major natural compounds of Malve neglecta L. cells . Faezeh Ghanati*, Faezeh Khatami, and Ebrahim Bemani
Callus cultures were established in vitro from leaf explants of Malva neglecta and were sub-cultured several times until a rapid-growing cell line was obtained. The calluses were exposed to different doses of ultraviolet (UV) radiation as follows: 0, 432, 864, and 1296 J/m2 for UV B and 0, 612, 1284, and 1836 J/m2 for UV C, corresponding to 0, 30, 60, and 90 min radiations, in tandem. Exposure ...
متن کاملThe molecular and physiological responses of Physcomitrella patens to ultraviolet-B radiation.
Ultraviolet-B (UV-B) radiation present in sunlight is an important trigger of photomorphogenic acclimation and stress responses in sessile land plants. Although numerous moss species grow in unshaded habitats, our understanding of their UV-B responses is very limited. The genome of the model moss Physcomitrella patens, which grows in sun-exposed open areas, encodes signaling and metabolic compo...
متن کامل