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In thylakoid membranes, photosystem I (PSI) forms a supercomplex with its light-harvesting antenna, light-harvesting complex I (LHC1). This crystal structure of plant PSI–LHCI shows details of the configuration of PsaK and integral networks of water molecules and lipids.
The rice resistance gene Xa4, which protects rice against Xanthomonas oryzae pv. oryzae, is widely used in global rice production. Now, a study reveals that Xa4 encodes a cell-wall-associated kinase that improves multiple agronomic traits by regulating cell wall strength.
The two GRAS transcription factors SHR and SCR play a role in root development by interacting with proteins of the BIRD/IDD family, such as JACKDAW. Structural and biochemical characterization of the three components explains how the subunits interact together and with DNA.
The PsbS protein is essential in triggering non-photochemical quenching. Antibody pull-down assays show that a combination of ΔpH and zeaxanthin increases PsbS binding to specific minor proteins in the light-harvesting complex of photosystem II.
A Catharanthus roseus tonoplast-localized transporter has been identified and characterized to export strictosidine, the central intermediate of terpene and alkaloid biosynthesis pathways, from the vacuole to the cytosol.
Application of pathogen-specific double-stranded RNA (dsRNA) was proposed as an approach against plant viruses. However, the instability of dsRNA hampers its application. Now, a study has used clay nanosheets to deliver dsRNA and obtain sustained protection against viruses.