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PSII repair cycle

Candidate: concept label1 source documents5 linked claims
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Aliases

photosystem II repair cycle

Extracted Explainers

What the tool is doing

The PSII repair cycle is described as a multi-step process that restores photosystem II after photooxidative damage under high light. The review frames it as spatially organized within different thylakoid subcompartments.

Source 1DOIPubMed

Resources required

The abstract supports a requirement for stacked grana thylakoids, unstacked thylakoid regions, and their crosstalk. It also notes a role for reversible protein phosphorylation in associated structural alterations.

Source 1DOIPubMed

What problem it solves

It solves the need for efficient recovery from photoinhibition and photooxidative damage of PSII under fluctuating sunlight.

Source 1DOIPubMed

What it does not solve

The abstract does not claim that the repair cycle fully prevents PSII damage, only that photoprotective mechanisms minimize damage and repair enables recovery.

Source 1DOIPubMed

Alternatives

The abstract contrasts repair with a broader battery of photoprotective mechanisms that minimize damage before or alongside repair.

Source 1DOIPubMed

Evidence Snippets

Plants have evolved a multi-step PSII repair cycle that allows efficient recovery from photooxidative PSII damage.
Evidence 1Source 1DOIPubMedprovenance

Supporting Sources

Linked Claims

Claim 1review summarysupports2014Source 1DOIPubMed

An important feature of the PSII repair cycle is its subcompartmentalization to stacked grana thylakoids and unstacked thylakoid regions.

Quoted textsource-backed
An important feature of the repair cycle is its subcompartmentalization to stacked grana thylakoids and unstacked thylakoid regions.
Claim 2review summarysupports2014Source 1DOIPubMed

Crosstalk between stacked and unstacked thylakoid membranes is essential to understand the PSII repair cycle.

Quoted textsource-backed
Thus, understanding the crosstalk between stacked and unstacked thylakoid membranes is essential to understand the PSII repair cycle.
Claim 3review summarysupports2014Source 1DOIPubMed

Dynamic changes in thylakoid membrane architecture triggered by high light exposure are central for efficient repair of PSII.

Quoted textsource-backed
It turns out that dynamic changes in thylakoid membrane architecture triggered by high light exposure are central for efficient repair of PSII.
Claim 4review summarysupports2014Source 1DOIPubMed

Plants have evolved a multi-step PSII repair cycle that allows efficient recovery from photooxidative PSII damage.

Quoted textsource-backed
Plants have evolved a multi-step PSII repair cycle that allows efficient recovery from photooxidative PSII damage.
Claim 5review summarysupports2014Source 1DOIPubMed

Under high light conditions, photoinhibition of the photosystem II complex occurs despite photoprotective mechanisms that minimize damage.

Quoted textsource-backed
Although a battery of photoprotective mechanisms minimize damage, photoinhibition of the photosystem II (PSII) complex occurs.