Chilling effects on primary photosynthetic processes in Medicago sativa: Acclimatory changes after short- and long-term exposure to low temperatures
The result's identifiers
Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F26296080%3A_____%2F20%3AN0000038" target="_blank" >RIV/26296080:_____/20:N0000038 - isvavai.cz</a>
Alternative codes found
RIV/00216224:14310/20:00116389
Result on the web
<a href="http://www.vupt.cz" target="_blank" >http://www.vupt.cz</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.2478/s11756-020-00470-6" target="_blank" >10.2478/s11756-020-00470-6</a>
Alternative languages
Result language
angličtina
Original language name
Chilling effects on primary photosynthetic processes in Medicago sativa: Acclimatory changes after short- and long-term exposure to low temperatures
Original language description
Two cutivars (cv.) of alfalfa (Medicago sativa L.) were used to study the influence of chilling on chlorophyll fluorescence parameters related to the photosynthetic performance of photosystem II (PS II). Potted plants were exposed to two chilling treatments (10 and 5 °C) for 15 and 22 days, respectively. After the chilling, basic chlorophyll fluorescence parameters (FV/FM, ΦPSII, qN) and chlorophyll fluorescence signals emitted from light-harvesting complexes (F0 — backgroung chlorophyll fluorescence) weremeasured by slow Kautsky kinetics supplemented by quenching analysis. Short-term effect of 5 °C was evaluated by fast chlorophyll fluorescence transients (OJIPs). Chilling did not lead to any change in FV/FM and ΦPSII in both cultivars, indicating their chilling tolerance. Background chlorophyll fluorescence showed a chilling-induced increase in the cv. Zuzana but not the cv. Holyna. The F0 increase was attributed to functional detachment of light-harvesting complexes from core PS II. In both cultivars, chilling treatment led to a decrease in non-photochemical quenching (qN). This decrease was attributed to a long-term acclimation of plants to low temperatures and the adjustment of PS II processes and photosynthetic performance. The shape of OJIP curves and OJIP-derived chlorophyll fluorescence parameters were found to be temperature-dependent after a short-term exposition to 5 °C. Both alfalfa cultivars showed chilling tolerance; however, the results suggest that the cv. Holyna may be more chilling-tolerant than the cv. Zuzana.
Czech name
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Czech description
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Classification
Type
J<sub>imp</sub> - Article in a specialist periodical, which is included in the Web of Science database
CEP classification
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OECD FORD branch
10611 - Plant sciences, botany
Result continuities
Project
<a href="/en/project/EF16_013%2F0001708" target="_blank" >EF16_013/0001708: ECOPOLARIS - Changes in structure and function of components of terrestrial polar ecosystems (CzechPolar2)</a><br>
Continuities
I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace
Others
Publication year
2020
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů
Data specific for result type
Name of the periodical
Biologia
ISSN
0006-3088
e-ISSN
1336-9563
Volume of the periodical
75
Issue of the periodical within the volume
8
Country of publishing house
CH - SWITZERLAND
Number of pages
10
Pages from-to
1105-1114
UT code for WoS article
000521859900001
EID of the result in the Scopus database
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