Response of grass pea (Lathyrus sativus L.) photosynthetic apparatus to short-term intensive UV-A:red radiation

Krzysztof Tokarz , Barbara Tokarz , Anna Wysocka , Tomasz Wójtowicz , Wojciech Makowski , Elżbieta Golemiec


Plants growing under natural conditions are constantly exposed to ultraviolet (UV), primarily UV-A, radiation. Grass pea (Lathyrus sativus L.) is a legume species resistant to harsh growing conditions, such as drought, salinity or periodic flooding. Due to the advantageous composition of seeds, it is used for consumption in such regions as South Asia or East Africa where high intensity of UV radiation occurs. Absorption of this spectral range causes changes in the photosynthetic apparatus of plants, including damage to the photosystem II (PSII) reaction centres. The aim of the work was to examine whether the use of the combination UV-A: red light as a source of radiation would enable quick acclimatization of the photosynthetic apparatus of grass pea to the negative effect of UV-A radiation. 14-day-old plants were exposed to UV-A:red radiation for 48 h. The plants exposed to UV-A:red radiation showed enhanced effective efficiency of PSII and increased total electron carriers, which enabled more effective photosynthesis at higher values of radiation intensity in comparison with control plants, kept under white LED light. At the same time, there were no statistically significant differences in both the photosynthetic pigment contents and the level of lipid peroxidation. The obtained results indicate that the observed increase in the efficiency of CO2 carboxylation after short-term UV-A:red radiation has resulted from the efficient linear electron transport due to maintaining the effective oxygen evolving complex (OEC) and increased total electron carriers.
Author Krzysztof Tokarz (FoBaH / IoPBaB / DoBaPP)
Krzysztof Tokarz,,
- Department of Botany and Plant Physiology
, Barbara Tokarz (FoBaH / IoPBaB / DoBaPP)
Barbara Tokarz,,
- Department of Botany and Plant Physiology
, Anna Wysocka (FoBaH / IoPBaB / DoBaPP)
Anna Wysocka,,
- Department of Botany and Plant Physiology
, Tomasz Wójtowicz (FoAE / DoPBaS)
Tomasz Wójtowicz,,
- Department of Plant Breeding and Seed Science
, Wojciech Makowski (FoBaH / IoPBaB / DoBaPP)
Wojciech Makowski,,
- Department of Botany and Plant Physiology
, Elżbieta Golemiec (FoAE / DoPBaS)
Elżbieta Golemiec,,
- Department of Plant Breeding and Seed Science
Journal seriesActa Physiologiae Plantarum, ISSN 0137-5881, e-ISSN 1861-1664, (N/A 70 pkt)
Issue year2019
Publication size in sheets0.5
Article number168
Keywords in EnglishChlorophyll a fluorescence, Malondialdehyde, Photosystem II, Ultraviolet radiation
ASJC Classification1102 Agronomy and Crop Science; 1110 Plant Science; 1314 Physiology
Languageen angielski
LicenseJournal (articles only); author's original; Uznanie Autorstwa (CC-BY); after publication
Response of grass pea (Lathyrus sativus L.) photosynthetic apparatus to short-term intensive UV-A:red radiation of 18-10-2019
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Score (nominal)70
Score sourcejournalList
Publication indicators WoS Citations = 0; Scopus SNIP (Source Normalised Impact per Paper): 2018 = 0.78; WoS Impact Factor: 2018 = 1.608 (2) - 2018=1.927 (5)
Citation count*
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FinansowanieThis Research was financed by the Ministry of Science and Higher Education of the Republic of Poland (DS 3500).
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