J 2022

Spruce versus Arabidopsis: different strategies of photosynthetic acclimation to light intensity change

STROCH, Michal, Vaclav KARLICKY, Petr ILIK, Iva ILIKOVA, Monika OPATIKOVA et. al.

Basic information

Original name

Spruce versus Arabidopsis: different strategies of photosynthetic acclimation to light intensity change

Authors

STROCH, Michal, Vaclav KARLICKY, Petr ILIK, Iva ILIKOVA, Monika OPATIKOVA, Lukas NOSEK, Pavel POSPISIL, Marika SVRCKOVA, Marek RAC, Pavel ROUDNICKÝ (203 Czech Republic, belonging to the institution), Zbyněk ZDRÁHAL (203 Czech Republic, guarantor, belonging to the institution), Vladimir SPUNDA and Roman KOURIL

Edition

Photosynthesis Research, Dordrecht, Springer, 2022, 0166-8595

Other information

Language

English

Type of outcome

Článek v odborném periodiku

Field of Study

10611 Plant sciences, botany

Country of publisher

Netherlands

Confidentiality degree

není předmětem státního či obchodního tajemství

References:

Impact factor

Impact factor: 3.700

RIV identification code

RIV/00216224:14740/22:00128479

Organization unit

Central European Institute of Technology

UT WoS

000841690900001

Keywords in English

Light acclimation; Photoprotection; Picea abies; Arabidopsis thaliana; Thylakoid membrane; Non-photochemical quenching; LHCII antenna; Photosynthetic control

Tags

Tags

International impact, Reviewed
Změněno: 2/11/2024 21:05, Ing. Martina Blahová

Abstract

V originále

The acclimation of higher plants to different light intensities is associated with a reorganization of the photosynthetic apparatus. These modifications, namely, changes in the amount of peripheral antenna (LHCII) of photosystem (PS) II and changes in PSII/PSI stoichiometry, typically lead to an altered chlorophyll (Chl) a/b ratio. However, our previous studies show that in spruce, this ratio is not affected by changes in growth light intensity. The evolutionary loss of PSII antenna proteins LHCB3 and LHCB6 in the Pinaceae family is another indication that the light acclimation strategy in spruce could be different. Here we show that, unlike Arabidopsis, spruce does not modify its PSII/PSI ratio and PSII antenna size to maximize its photosynthetic performance during light acclimation. Its large PSII antenna consists of many weakly bound LHCIIs, which form effective quenching centers, even at relatively low light. This, together with sensitive photosynthetic control on the level of cytochrome b(6)f complex (protecting PSI), is the crucial photoprotective mechanism in spruce. High-light acclimation of spruce involves the disruption of PSII macro-organization, reduction of the amount of both PSII and PSI core complexes, synthesis of stress proteins that bind released Chls, and formation of "locked-in" quenching centers from uncoupled LHCIIs. Such response has been previously observed in the evergreen angiosperm Monstera deliciosa exposed to high light. We suggest that, in contrast to annuals, shade-tolerant evergreen land plants have their own strategy to cope with light intensity changes and the hallmark of this strategy is a stable Chl a/b ratio.

Links

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