Seasonality of PSII thermostability and water use efficiency of in situ mountainous Norway spruce (Picea abies)

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F86652079%3A_____%2F23%3A00571461" target="_blank" >RIV/86652079:_____/23:00571461 - isvavai.cz</a>

Nalezeny alternativní kódy

RIV/67985939:_____/23:00571461

Výsledek na webu

<a href="https://link.springer.com/article/10.1007/s11676-022-01476-3" target="_blank" >https://link.springer.com/article/10.1007/s11676-022-01476-3</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1007/s11676-022-01476-3" target="_blank" >10.1007/s11676-022-01476-3</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Seasonality of PSII thermostability and water use efficiency of in situ mountainous Norway spruce (Picea abies)

Popis výsledku v původním jazyce

The stability of monocultural, even-aged spruce forests at lower altitudes in Central Europe is seriously threatened by the prospects of global climate change. The thermostability and water use efficiency of their photosynthetic apparatus might play a vital role in their successful acclimation. In this study, photosystem II (PSII) performance (OJIP transient, rapid light curves) and thermostability were analyzed in Norway spruce (Picea abies (L.) Karst.) throughout the growing season of the exceptionally warm year 2018 (May-September) in the Western Carpathians, Slovakia. These measurements were accompanied by analysis of pigment concentrations in the needles. In addition, gas-exchange temperature curves were produced weekly from June until September to obtain intrinsic water use efficiencies. At the beginning of the growing season, needles exposed to heat stress showed significantly higher basal fluorescence and lower quantum yield, performance index, critical temperature thresholds of PSII inactivation and non-photochemical yield in comparison to other months. The overall thermostability (heat-resistance) of PSII peaked in July and August, reflected in the lowest basal fluorescence and the highest quantum yield of PSII, critical temperature thresholds and yield of non-photochemical quenching under heat stress. Additionally, the ratio between chlorophyll and carotenoids was the highest in August and had a positive impact on PSII thermostability. Moreover, the high-temperature intrinsic water use efficiency was significantly higher during July and August than in June. Results show that 15-year-old trees of Picea abies at 840 m a.s.l. exhibited acclimative seasonal responses of PSII thermostability and intrinsic water use efficiency during an exceptionally warm year. Our results suggest that mountainous P. abies at lower altitudes can acclimate their photosynthetic apparatus to higher temperatures during summer.

Název v anglickém jazyce

Seasonality of PSII thermostability and water use efficiency of in situ mountainous Norway spruce (Picea abies)

Popis výsledku anglicky

The stability of monocultural, even-aged spruce forests at lower altitudes in Central Europe is seriously threatened by the prospects of global climate change. The thermostability and water use efficiency of their photosynthetic apparatus might play a vital role in their successful acclimation. In this study, photosystem II (PSII) performance (OJIP transient, rapid light curves) and thermostability were analyzed in Norway spruce (Picea abies (L.) Karst.) throughout the growing season of the exceptionally warm year 2018 (May-September) in the Western Carpathians, Slovakia. These measurements were accompanied by analysis of pigment concentrations in the needles. In addition, gas-exchange temperature curves were produced weekly from June until September to obtain intrinsic water use efficiencies. At the beginning of the growing season, needles exposed to heat stress showed significantly higher basal fluorescence and lower quantum yield, performance index, critical temperature thresholds of PSII inactivation and non-photochemical yield in comparison to other months. The overall thermostability (heat-resistance) of PSII peaked in July and August, reflected in the lowest basal fluorescence and the highest quantum yield of PSII, critical temperature thresholds and yield of non-photochemical quenching under heat stress. Additionally, the ratio between chlorophyll and carotenoids was the highest in August and had a positive impact on PSII thermostability. Moreover, the high-temperature intrinsic water use efficiency was significantly higher during July and August than in June. Results show that 15-year-old trees of Picea abies at 840 m a.s.l. exhibited acclimative seasonal responses of PSII thermostability and intrinsic water use efficiency during an exceptionally warm year. Our results suggest that mountainous P. abies at lower altitudes can acclimate their photosynthetic apparatus to higher temperatures during summer.

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

—

OECD FORD obor

40102 - Forestry

Projekt

—

Návaznosti

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Rok uplatnění

2023

Kód důvěrnosti údajů

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Název periodika

Journal of Forestry Research

ISSN

1007-662X

e-ISSN

1993-0607

Svazek periodika

34

Číslo periodika v rámci svazku

1

Stát vydavatele periodika

CN - Čínská lidová republika

Počet stran výsledku

12

Strana od-do

197-208

Kód UT WoS článku

000795302800001

EID výsledku v databázi Scopus

2-s2.0-85128833018