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Physio-biochemical responses of sweet cherry leaf to natural cold conditions
ID
Vošnjak, Matej
(
Author
),
ID
Šircelj, Helena
(
Author
),
ID
Vodnik, Dominik
(
Author
),
ID
Usenik, Valentina
(
Author
)
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MD5: 1B6967766FC422E7203CAE694C075B83
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https://www.mdpi.com/2223-7747/11/24/3507
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Abstract
Trees of the sweet cherry cultivar ‘Grace Star’ (Prunus avium L.) were exposed to low temperatures without frost for two consecutive nights under natural conditions 36 d after flowering, to study the effects on the physiological properties and metabolic status of leaves. The response was studied by measuring chlorophyll fluorescence and gas exchange parameters and by analyzing chloroplast pigments (i) immediately after exposure, (ii) 24 h and (iii) 48 h later. The first exposure at 2.4 (±0.2) °C and a minimum of 0.8 °C elicited more changes than the second exposure at 4.9 (±0.3) °C and a minimum of 2.4 °C. After the first exposure, the maximum quantum yield of PS II (Fv/Fm), effective quantum efficiency of PS II, net photosynthesis (PN), stomatal conductance (gs), transpiration, and intercellular CO2 concentration were significantly lower, and after the second exposure, the content of chlorophyll b, total chlorophyll, β-carotene, and lutein were lower. The content of antheraxanthin and zeaxanthin was higher immediately after both exposures, and that of antheraxanthin was also higher 24 h later. Recovery took longer in trees that were exposed twice. Fv/Fm recovered within 48 h, but the de-epoxidation state of the xanthophyll cycle pool, PN, and gs did not reach the level of controls, indicating that the stress effect lasted several days which is probably sufficient to cause fruit drop and reduce yield.
Language:
English
Keywords:
cold stress
,
phenolic compounds
,
quality
,
photosynthesis
,
pigments
,
Prunus avium
,
recovery
Work type:
Article
Typology:
1.01 - Original Scientific Article
Organization:
BF - Biotechnical Faculty
Publication status:
Published
Publication version:
Version of Record
Year:
2022
Number of pages:
11 str.
Numbering:
Vol. 11, iss. 24, 3507
PID:
20.500.12556/RUL-143313
UDC:
634
ISSN on article:
2223-7747
DOI:
10.3390/ plants11243507
COBISS.SI-ID:
133908227
Publication date in RUL:
14.12.2022
Views:
435
Downloads:
89
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Record is a part of a journal
Title:
Plants
Shortened title:
Plants
Publisher:
MDPI
ISSN:
2223-7747
COBISS.SI-ID:
523345433
Licences
License:
CC BY 4.0, Creative Commons Attribution 4.0 International
Link:
http://creativecommons.org/licenses/by/4.0/
Description:
This is the standard Creative Commons license that gives others maximum freedom to do what they want with the work as long as they credit the author.
Secondary language
Language:
Slovenian
Keywords:
hladen stres
,
fotosinteza
,
pigmenti
,
prunus avium
,
okrevanje
,
fiziologija rastlin
Projects
Funder:
ARRS - Slovenian Research Agency
Funding programme:
Young Researcher Grant
Funder:
ARRS - Slovenian Research Agency
Project number:
P4-0013
Name:
Hortikultura
Funder:
ARRS - Slovenian Research Agency
Project number:
P4-0085
Name:
Agroekosistemi
Funder:
ARRS - Slovenian Research Agency
Project number:
I0-0022
Name:
Mreža raziskovalnih infrastrukturnih centrov Univerze v Ljubljani (MRIC UL)
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