De-regulation of maize C4 photosynthetic development in a mesophyll cell defective mutant: Bundle sheath and Mesophyll

ABSTRACT: During Zea mays (maize) C4 differentiation, mesophyll (M) and bundle sheath (BS) cells accumulate distinct sets of photosynthetic enzymes, with very low photosystem II (PSII) content in BS chloroplasts. Consequently, there is little linear electron transport in the BS and ATP is generated by cyclic electron flow. In contrast, M thylakoids are very similar to those of C3 plants and produce the ATP and NADPH that drive metabolic activities. Regulation of this differentiation process is poorly understood but involves expression and coordination of nuclear and plastid genomes. Here, we identify a recessive allele of the maize Hcf136 homologue that in Arabidopsis thaliana functions as a PSII stability or assembly factor located in the thylakoid lumen. Proteome analysis of the thylakoids and ele

ORGANISM(S): Zea mays

SUBMITTER: Thomas Brutnell 

PROVIDER: E-GEOD-9698 | biostudies-arrayexpress |

REPOSITORIES: biostudies-arrayexpress