Characterization of PetM cytochrome b6f subunit 7 domain-containing protein in tomato.

ABSTRACT: In recent years, multiple advances have been made in understanding the photosynthetic machinery in model organisms. Knowledge transfer to horticultural important fruit crops is challenging and time-consuming due to restrictions in gene editing tools and prolonged life cycles. Here, we characterize a gene encoding a PetM domain-containing protein in tomato. The CRISPR/Cas9 knockout lines of the PetM showed impairment in the chloroplastic electron transport rate (ETR), reduced CO₂ assimilation, and reduction of carotenoids and chlorophylls (Chl) under several light conditions. Further, growth-condition-dependent elevation or repression of Chl a/b ratios and de-epoxidation states were identified, underlining possible impairment compensation mechanisms. However, under

SUBMITTER: Bulut M 

PROVIDER: S-EPMC10716634 | biostudies-literature | 2023 Dec

REPOSITORIES: biostudies-literature