Photosynthetic activity of common buckwheat (Fagopyrum esculentum Moench) exposed to thermal stress

Marta Hornyák , Agnieszka Płażek , Przemysław Kopeć , Michał Dziurka , Jakub Pastuszak , Anna Szczerba , Tomasz Hura


The aim of the work was to investigate thermal stress effect on photosynthetic activity of common buckwheat. Seedlings of common buckwheat were exposed to 20°C (control) and 30°C (thermal stress). The research involved the Polish cultivar 'Panda' and strain PA15 and determined kinetics of chlorophyll a fluorescence (Chlf), leaf gas exchange, soluble carbohydrate (SC) content in donor leaves, electrolyte leakage as a parameter of cell membrane permeability, and amount of abscisic acid and jasmonates. In 'Panda' and PA15 plants grown at 30°C, most of Chlf parameters improved. 'Panda' plants grown at 30°C demonstrated a higher increase in net photosynthetic rate, lower transpiration rate, and smaller SC reduction than those of PA15 strain. At this temperature, 'Panda' leaves accumulated greater amounts of jasmonates than that of the control. We concluded that studied genotypes demonstrated disparate responses to thermal stress, but for both, 30°C is more favourable temperature for vegetative growth than 20°C.
Author Marta Hornyák (FoAaE / DoPP)
Marta Hornyák,,
- Department of Plant Physiology
, Agnieszka Płażek (FoAaE / DoPP)
Agnieszka Płażek,,
- Department of Plant Physiology
, Przemysław Kopeć
Przemysław Kopeć,,
, Michał Dziurka
Michał Dziurka,,
, Jakub Pastuszak (FoAaE / DoPP)
Jakub Pastuszak,,
- Department of Plant Physiology
, Anna Szczerba (FoAaE / DoM)
Anna Szczerba,,
- Department of Microbiology
, Tomasz Hura
Tomasz Hura,,
Journal seriesPhotosynthetica, ISSN 0300-3604, e-ISSN 1573-9058, (N/A 70 pkt)
Issue year2020
Publication size in sheets0.5
Keywords in Englishheat stress; ion leakage; photochemical efficiency; water-use efficiency
ASJC Classification1110 Plant Science; 1314 Physiology
Languageen angielski
LicenseJournal (articles only); author's original; Uznanie Autorstwa - Użycie Niekomercyjne - Bez utworów zależnych (CC-BY-NC-ND); after publication
Photosynthetic activity of common buckwheat (Fagopyrum esculentum Moench) exposed to thermal stress of 09-01-2020
538,64 KB
Score (nominal)70
Score sourcejournalList
Publication indicators Scopus SNIP (Source Normalised Impact per Paper): 2016 = 1.141; WoS Impact Factor: 2018 = 2.365 (2) - 2018=2.669 (5)
Citation count*
Additional fields
FinansowanieThis study was supported by funding of the National Science Centre in Poland (2017/25/B/NZ9/00148).
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