First-pass extracted concept

Gibberellin signaling

Candidate: concept label1 source documents5 linked claims

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Evidence Snippets

This review covers recent advances in gibberellin (GA) signaling.

Evidence 1Source 1DOI PubMedprovenance

Supporting Sources

Source 1review2008PlantaDOI PubMed

1 evidence snippet 5 linked claims Claim 1 Claim 2 Claim 3

Linked Claims

Claim 1condition dependencysupports2008Source 1DOI PubMed

Because the relevant PIF proteins are degraded in light, they can function only in the combined absence of light and presence of GA.

Claim 2evolutionary summarysupports2008Source 1DOI PubMed

GA signaling likely evolved at the same time as or just after the plant vascular system and before the acquisition of seed reproduction.

Claim 3evolutionary summarymixed2008Source 1DOI PubMed

Selaginella contains genes required for GA biosynthesis and signaling, but the physiological role of GA response in Selaginella remains unresolved.

Claim 4mechanistic summarysupports2008Source 1DOI PubMed

GA signaling is centered on DELLA proteins, which act as negative regulators of GA response.

Claim 5mechanistic summarysupports2008Source 1DOI PubMed

The GA-GID1-DELLA complex has increased affinity for an F-box protein, after which DELLAs are degraded via the proteasome and GA induces growth through DELLA degradation.