Plants fix 258 billion tons of CO2 in their chloroplasts through photosynthesis every year. For these cell organelles to work properly, they require certain minerals—particularly ions of the metals iron (Fe), manganese (Mn), copper (Cu), and zinc (Zn). Disruptions of ion homeostasis impair photosynthesis and thus growth and yields. A team with members from Munich, Bochum, Columbia (MO), and Saarbrucken, led by LMU biologist Professor Hans-Henning Kunz has now deciphered the chloroplast ionome—the totality of metal ions in the chloroplast—of various plant species.
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