EXO modifies sucrose and trehalose responses and connects the extracellular carbon status to growth.

ABSTRACT: Plants have the capacity to adapt growth to changing environmental conditions. This implies the modulation of metabolism according to the availability of carbon (C). Particular interest in the response to the C availability is based on the increasing atmospheric levels of CO2. Several regulatory pathways that link the C status to growth have emerged. The extracellular EXO protein is essential for cell expansion and promotes shoot and root growth. Homologous proteins were identified in evolutionarily distant green plants. We show here that the EXO protein connects growth with C responses. The exo mutant displayed altered responses to exogenous sucrose supplemented to the growth medium. Impaired growth of the mutant in synthetic medium was associated with the accumulation of starch and antho

SUBMITTER: Lisso J 

PROVIDER: S-EPMC3691544 | biostudies-literature | 2013

REPOSITORIES: biostudies-literature