This rice protein builds the machinery that captures sunlight
Liu K, Yu Q, Feng H, Wang M, Dai Q
Crop Improvement
Every green leaf in your garden depends on chloroplasts assembling correctly, and this study pinpoints one of the master proteins that makes that assembly happen, work that could eventually help breed crops that photosynthesize more efficiently under stress.
Rice plants need a specific protein called OsFtsH1 to build working chloroplasts, the tiny solar panels inside leaf cells that turn sunlight into food. When researchers disabled this protein, rice seedlings came out pale white with broken chloroplasts and couldn't properly assemble the proteins needed for photosynthesis. The protein also responds to plant hormones and light, suggesting it's a key switch connecting a plant's environment to how well it can grow green and healthy.
Key Findings
CRISPR/Cas9 gene editing confirmed OsFtsH1, a zinc metalloprotease, is required for normal chlorophyll content and chloroplast structure in rice
OsFtsH1 maintains stability of D1, D2, and CP43, three core proteins of photosystem II essential for capturing light energy
OsFtsH1 physically interacts with three other proteins (OsCPL1, OsPsbO, OsFd1) and its expression is induced by light and the hormones IAA and ABA
chevron_right Technical Summary
Scientists identified a protein in rice called OsFtsH1 that acts like quality control for chloroplasts, the parts of plant cells that do photosynthesis. Without it, rice seedlings turn white and can't build the machinery needed to capture sunlight, a discovery that could help breeders engineer hardier, more efficient crops.
Abstract Preview
Original paper
A FtsH-Like Zinc Metalloprotease, OsFtsH1, Coordinates Chloroplast Development and Photosystem II Homeostasis in Rice.
Chloroplast development is a fundamental process underlying photosynthesis and plant growth, yet its molecular regulatory mechanisms remain to be fully elucidated. In this study, we identified an a...
open_in_new Read full abstractAbstract copyright held by the original publisher.
Species Mentioned
Was this useful?
Want to tell us more? (optional)
Thanks for the note!
Something went wrong — please try again.
Too many submissions. Try again in an hour.
Gene editing removes 97% of celiac-triggering proteins from bread wheat
It could mean that people with celiac disease — roughly 1 in 100 worldwide — may one day safely eat bread made from real wheat, without sacrificing the taste...
Rice is a cereal grain and in its domesticated form is the staple food of over half of the world's population, particularly in Asia and Africa. Rice is the seed of the grass species Oryza sativa —or, much less commonly, Oryza glaberrima. Asian rice was domesticated in China some 13,500 to 8,200 y...