Iron allocation to chloroplast proteins depends on the DNA-binding protein WHIRLY1.

ABSTRACT:

Main conclusion

The DNA-binding protein WHIRLY1, sharing structural similarities with ferritin, plays a role in the formation of iron cofactor proteins within chloroplasts. Previous studies indicated that barley plants with a knockdown of HvWHIRLY1 containing a minimal amount of the protein are compromised in chloroplast development and photosynthesis, and get chlorotic leaves when grown at high irradiance. Thereby, the leaves display signs of iron deficiency. Metal determination revealed, however, that leaves of WHIRLY1-deficient plants had a regular iron content. Nevertheless, WHIRLY1-deficiency affected the functionality of photosystem II less than that of photosystem I, which has a higher demand for iron. Immunological analyses revealed that components of both photosystems had

SUBMITTER: Krupinska K 

PROVIDER: S-EPMC12174181 | biostudies-literature | 2025 Jun

REPOSITORIES: biostudies-literature