Impaired Cell-cell Communication in the Multicellular Cyanobacterium Affects Carbon Uptake, Photosynthesis, and the Cell Wall

Overview

Journal iScience

Publisher Cell Press

Date 2021 Jan 18

PMID 33458622

Citations 6

Authors

Sergio Camargo

Dena Leshkowitz

Bareket Dassa

Vicente Mariscal

Enrique Flores

Joel Stavans

Rinat Arbel-Goren

Affiliations

Soon will be listed here.

Abstract

Cell-cell communication is an essential attribute of multicellular organisms. The effects of perturbed communication were studied in septal protein mutants of the heterocyst-forming filamentous cyanobacterium sp. PCC 7120 model organism. Strains bearing and deletions showed differences in growth, pigment absorption spectra, and spatial patterns of expression of the gene encoding a heterocyst differentiation master regulator. Global changes in gene expression resulting from deletion of those genes were mapped by RNA sequencing analysis of wild-type and mutant strains, both under nitrogen-replete and nitrogen-poor conditions. The effects of and deletions were non-additive, and perturbed cell-cell communication led to significant changes in global gene expression. Most significant effects, related to carbon metabolism, included increased expression of genes encoding carbon uptake systems and components of the photosynthetic apparatus, as well as decreased expression of genes encoding cell wall components related to heterocyst differentiation and to polysaccharide export.

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