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Photosynthesis performance in sweet almond [Prunus dulcis (Mill) D. Webb] exposed to supplemental UV-B radiation

A Ranjbarfordoei, R Samson and Patrick Van Damme UGent (2011) PHOTOSYNTHETICA. 49(1). p.107-111
abstract
Due to anthropogenic influences, solar UV-B irradiance at the earth's surface is increasing. To determine the effects of enhanced UV-B radiation on photosynthetic characteristics of Prunus dulcis, two-year-old seedlings of the species were submitted to four levels of UV-B stress, namely 0 (UV-B(c)), 4.42 (UV-B(1)), 7.32 (UV-B(2)) and 9.36 (UV-B(3)) kJ m(-2) d(-1). Effects of UV-B stress on a range of chlorophyll (Chl) fluorescence parameters (FPs), Chl contents and photosynthetic gas-exchange parameters were investigated. UV-B stress promoted an increase in minimal fluorescence of dark-adapted state (F(0)) and F(0)/F(m), and a decrease in variable fluorescence (F(v), F(v)/F(m), F(v)/F(0) and F(0)/F(m)) due to its adverse effects on photosystem II (PSII) activity. No significant change was observed for maximal fluorescence of dark-adapted state (F(m)). Enhanced UV-B radiation caused a significant inhibition of net photosynthetic rate (P(N)) at UV-B(2) and UV-B(3) levels and this was accompanied by a reduction in stomatal conductance (g(s)) and transpiration rate (E). The contents of Chl a, b, and total Chl content (a+b) were also significantly reduced at increased UV-B stress. In general, adverse UV-B effects became significant at the highest tested radiation dose 9.36 kJ m(-2) d(-1). The most sensitive indicators for UV-B stress were F(v)/F(0), Chl a content and P(N). Significant P < 0.05 alteration in these parameters was found indicating the drastic effect of UV-B radiation on P. dulcis.
Please use this url to cite or link to this publication:
author
organization
year
type
journalArticle (original)
publication status
published
subject
keyword
LONG-TERM EXPOSURE, CHLOROPHYLL FLUORESCENCE, GAS-EXCHANGE, HYPERSPECTRAL REFLECTANCE, DROUGHT STRESS, WATER-STRESS, PLANTS, CAROTENOIDS, SENSITIVITY, EFFICIENCY, chlorophyll content, fluorescence quenching, photosystem
journal title
PHOTOSYNTHETICA
Photosynthetica
volume
49
issue
1
pages
107 - 111
Web of Science type
Article
Web of Science id
000290319600013
JCR category
PLANT SCIENCES
JCR impact factor
1 (2011)
JCR rank
114/189 (2011)
JCR quartile
3 (2011)
ISSN
0300-3604
DOI
10.1007/s11099-011-0017-z
language
English
UGent publication?
yes
classification
A1
copyright statement
I have transferred the copyright for this publication to the publisher
id
1849119
handle
http://hdl.handle.net/1854/LU-1849119
date created
2011-06-30 13:25:06
date last changed
2011-08-02 13:40:40
@article{1849119,
  abstract     = {Due to anthropogenic influences, solar UV-B irradiance at the earth's surface is increasing. To determine the effects of enhanced UV-B radiation on photosynthetic characteristics of Prunus dulcis, two-year-old seedlings of the species were submitted to four levels of UV-B stress, namely 0 (UV-B(c)), 4.42 (UV-B(1)), 7.32 (UV-B(2)) and 9.36 (UV-B(3)) kJ m(-2) d(-1). Effects of UV-B stress on a range of chlorophyll (Chl) fluorescence parameters (FPs), Chl contents and photosynthetic gas-exchange parameters were investigated. UV-B stress promoted an increase in minimal fluorescence of dark-adapted state (F(0)) and F(0)/F(m), and a decrease in variable fluorescence (F(v), F(v)/F(m), F(v)/F(0) and F(0)/F(m)) due to its adverse effects on photosystem II (PSII) activity. No significant change was observed for maximal fluorescence of dark-adapted state (F(m)). Enhanced UV-B radiation caused a significant inhibition of net photosynthetic rate (P(N)) at UV-B(2) and UV-B(3) levels and this was accompanied by a reduction in stomatal conductance (g(s)) and transpiration rate (E). The contents of Chl a, b, and total Chl content (a+b) were also significantly reduced at increased UV-B stress. In general, adverse UV-B effects became significant at the highest tested radiation dose 9.36 kJ m(-2) d(-1). The most sensitive indicators for UV-B stress were F(v)/F(0), Chl a content and P(N). Significant P {\textlangle} 0.05 alteration in these parameters was found indicating the drastic effect of UV-B radiation on P. dulcis.},
  author       = {Ranjbarfordoei, A and Samson, R and Van Damme, Patrick},
  issn         = {0300-3604},
  journal      = {PHOTOSYNTHETICA},
  keyword      = {LONG-TERM EXPOSURE,CHLOROPHYLL FLUORESCENCE,GAS-EXCHANGE,HYPERSPECTRAL REFLECTANCE,DROUGHT STRESS,WATER-STRESS,PLANTS,CAROTENOIDS,SENSITIVITY,EFFICIENCY,chlorophyll content,fluorescence quenching,photosystem},
  language     = {eng},
  number       = {1},
  pages        = {107--111},
  title        = {Photosynthesis performance in sweet almond [Prunus dulcis (Mill) D. Webb] exposed to supplemental UV-B radiation},
  url          = {http://dx.doi.org/10.1007/s11099-011-0017-z},
  volume       = {49},
  year         = {2011},
}

Chicago
Ranjbarfordoei, A, R Samson, and Patrick Van Damme. 2011. “Photosynthesis Performance in Sweet Almond [Prunus Dulcis (Mill) D. Webb] Exposed to Supplemental UV-B Radiation.” Photosynthetica 49 (1): 107–111.
APA
Ranjbarfordoei, A., Samson, R., & Van Damme, P. (2011). Photosynthesis performance in sweet almond [Prunus dulcis (Mill) D. Webb] exposed to supplemental UV-B radiation. PHOTOSYNTHETICA, 49(1), 107–111.
Vancouver
1.
Ranjbarfordoei A, Samson R, Van Damme P. Photosynthesis performance in sweet almond [Prunus dulcis (Mill) D. Webb] exposed to supplemental UV-B radiation. PHOTOSYNTHETICA. 2011;49(1):107–11.
MLA
Ranjbarfordoei, A, R Samson, and Patrick Van Damme. “Photosynthesis Performance in Sweet Almond [Prunus Dulcis (Mill) D. Webb] Exposed to Supplemental UV-B Radiation.” PHOTOSYNTHETICA 49.1 (2011): 107–111. Print.