Sun as a stressor and/or regulator of plant metabolism: responses to UV radiation and high light
Abstract
In their natural environment, plants are constantly exposed to dynamic changes of solar
radiation, which mainly consists of infrared (IR, >700 nm), photosynthetically active radiation
(PAR, 400-700 nm) and minor portion of ultraviolet (UV) radiation (UV-B, 290-315 nm and
UV-A, 315-400 nm). Sunlight is not only the primary source of energy in photosynthesis, it is
also an important signal which regulates plant growth and development. During the period
from the 1970s to 1990s, investigations on UV‐B effects on organisms were in the centre of
attention due to alarming depletion of stratospheric ozone layer and increased UV‐B radiation
reaching the Earth’s surface. UV-B radiation has been perceived only as a stressor. A decade
later, new data obtained using realistic UV-B doses and realistic UV-B:UV-A:PAR ratio,
clearly show that UV-B is very important environmental cue and regulator of plant
metabolism, rather than a stressor. In the recent years, great progress has been made in...
understanding the mechanisms of light signals’ perception. However, the complications arise
from the overlapping of the acclimative responses to UV‐B radiation and high PAR intensity,
imposing cross‐tolerance to different components of solar radiation. Moreover, information on
other constituents involved in the UV‐B response, such as reactive oxygen species in relation to
their tissue- and subcellular-localization is scarce. Our latest findings using leaf variegation as
a model with metabolically contrasting tissues show specific responses to UV-B radiation and
high light in relation to antioxidative metabolism, photosynthesis, carbohydrate metabolism,
and distribution of phenolics.
Keywords:
pelargonium zonale / variegated plants / Plectranthus coleoides / UV-B radiation / photosynthesis / Phenolic metabolism / antioxidative metabolism / carbon allocationSource:
Biochemistry of Control in Life and Technology, 2017, 41-54Publisher:
- Belgrade : Serbian Biochemical Society
Funding / projects:
- Modulation of antioxidative metabolism in plants for improvement of plant abiotic stress tolerance and identification of new biomarkers for application in remediation and monitoring of degraded biotopes (RS-MESTD-Integrated and Interdisciplinary Research (IIR or III)-43010)
Note:
- Abstract: Serbian Biochemical Society Seventh Conference with international participation , Faculty of Chemistry, University of Belgrade 10.11.2017. Belgrade, Serbia “Biochemistry of Control in Life and Technology”
Collections
Institution/Community
Institut za molekularnu genetiku i genetičko inženjerstvoTY - CONF AU - Vidović, Marija AU - Morina, Filis AU - Veljović Jovanović, Sonja PY - 2017 UR - https://imagine.imgge.bg.ac.rs/handle/123456789/1879 AB - In their natural environment, plants are constantly exposed to dynamic changes of solar radiation, which mainly consists of infrared (IR, >700 nm), photosynthetically active radiation (PAR, 400-700 nm) and minor portion of ultraviolet (UV) radiation (UV-B, 290-315 nm and UV-A, 315-400 nm). Sunlight is not only the primary source of energy in photosynthesis, it is also an important signal which regulates plant growth and development. During the period from the 1970s to 1990s, investigations on UV‐B effects on organisms were in the centre of attention due to alarming depletion of stratospheric ozone layer and increased UV‐B radiation reaching the Earth’s surface. UV-B radiation has been perceived only as a stressor. A decade later, new data obtained using realistic UV-B doses and realistic UV-B:UV-A:PAR ratio, clearly show that UV-B is very important environmental cue and regulator of plant metabolism, rather than a stressor. In the recent years, great progress has been made in understanding the mechanisms of light signals’ perception. However, the complications arise from the overlapping of the acclimative responses to UV‐B radiation and high PAR intensity, imposing cross‐tolerance to different components of solar radiation. Moreover, information on other constituents involved in the UV‐B response, such as reactive oxygen species in relation to their tissue- and subcellular-localization is scarce. Our latest findings using leaf variegation as a model with metabolically contrasting tissues show specific responses to UV-B radiation and high light in relation to antioxidative metabolism, photosynthesis, carbohydrate metabolism, and distribution of phenolics. PB - Belgrade : Serbian Biochemical Society C3 - Biochemistry of Control in Life and Technology T1 - Sun as a stressor and/or regulator of plant metabolism: responses to UV radiation and high light EP - 54 SP - 41 UR - https://hdl.handle.net/21.15107/rcub_imagine_1879 ER -
@conference{ author = "Vidović, Marija and Morina, Filis and Veljović Jovanović, Sonja", year = "2017", abstract = "In their natural environment, plants are constantly exposed to dynamic changes of solar radiation, which mainly consists of infrared (IR, >700 nm), photosynthetically active radiation (PAR, 400-700 nm) and minor portion of ultraviolet (UV) radiation (UV-B, 290-315 nm and UV-A, 315-400 nm). Sunlight is not only the primary source of energy in photosynthesis, it is also an important signal which regulates plant growth and development. During the period from the 1970s to 1990s, investigations on UV‐B effects on organisms were in the centre of attention due to alarming depletion of stratospheric ozone layer and increased UV‐B radiation reaching the Earth’s surface. UV-B radiation has been perceived only as a stressor. A decade later, new data obtained using realistic UV-B doses and realistic UV-B:UV-A:PAR ratio, clearly show that UV-B is very important environmental cue and regulator of plant metabolism, rather than a stressor. In the recent years, great progress has been made in understanding the mechanisms of light signals’ perception. However, the complications arise from the overlapping of the acclimative responses to UV‐B radiation and high PAR intensity, imposing cross‐tolerance to different components of solar radiation. Moreover, information on other constituents involved in the UV‐B response, such as reactive oxygen species in relation to their tissue- and subcellular-localization is scarce. Our latest findings using leaf variegation as a model with metabolically contrasting tissues show specific responses to UV-B radiation and high light in relation to antioxidative metabolism, photosynthesis, carbohydrate metabolism, and distribution of phenolics.", publisher = "Belgrade : Serbian Biochemical Society", journal = "Biochemistry of Control in Life and Technology", title = "Sun as a stressor and/or regulator of plant metabolism: responses to UV radiation and high light", pages = "54-41", url = "https://hdl.handle.net/21.15107/rcub_imagine_1879" }
Vidović, M., Morina, F.,& Veljović Jovanović, S.. (2017). Sun as a stressor and/or regulator of plant metabolism: responses to UV radiation and high light. in Biochemistry of Control in Life and Technology Belgrade : Serbian Biochemical Society., 41-54. https://hdl.handle.net/21.15107/rcub_imagine_1879
Vidović M, Morina F, Veljović Jovanović S. Sun as a stressor and/or regulator of plant metabolism: responses to UV radiation and high light. in Biochemistry of Control in Life and Technology. 2017;:41-54. https://hdl.handle.net/21.15107/rcub_imagine_1879 .
Vidović, Marija, Morina, Filis, Veljović Jovanović, Sonja, "Sun as a stressor and/or regulator of plant metabolism: responses to UV radiation and high light" in Biochemistry of Control in Life and Technology (2017):41-54, https://hdl.handle.net/21.15107/rcub_imagine_1879 .