10.1021/pr4009942.s001
Barbara Molesini
Barbara
Molesini
Daniela Cecconi
Daniela
Cecconi
Youry Pii
Youry
Pii
Tiziana Pandolfini
Tiziana
Pandolfini
Local and Systemic Proteomic
Changes in <i>Medicago Truncatula</i> at an Early Phase
of <i>Sinorhizobium meliloti</i> Infection
American Chemical Society
2014
Sinorhizobium meliloti InfectionA
sucrose synthase
stress response
alteration
bacteria
signal exchange
root nodules
induction
formation
biotic stress
proteome changes
rhizobial infection
Systemic Proteomic Changes
Medicago truncatula
chloroplast proteins
Sinorhizobium meliloti infection
energy metabolism
ABA
redox enzymes
Medicago Truncatula
proteomic changes
ascorbate peroxidase
2014-02-07 00:00:00
Journal contribution
https://acs.figshare.com/articles/journal_contribution/Local_and_Systemic_Proteomic_Changes_in_i_Medicago_Truncatula_i_at_an_Early_Phase_of_i_Sinorhizobium_meliloti_i_Infection/2325934
A symbiotic
association with N-fixing bacteria facilitates the growth of leguminous
plants under nitrogen-limiting conditions. The establishment of the
symbiosis requires signal exchange between the host and the bacterium,
which leads to the formation of root nodules, inside which bacteria
are hosted. The formation of nodules is controlled through local and
systemic mechanisms, which involves root-shoot communication. Our
study was aimed at investigating the proteomic changes occurring in
shoots and concomitantly in roots of <i>Medicago truncatula</i> at an early stage of <i>Sinorhizobium meliloti</i> infection.
The principal systemic effects consisted in alteration of chloroplast
proteins, induction of proteins responsive to biotic stress, and changes
in proteins involved in hormonal signaling and metabolism. The most
relevant local effect was the induction of proteins involved in the
utilization of photosynthates and C-consuming processes (such as sucrose
synthase and fructose-bisphosphate aldolase). In addition, some redox
enzymes such as peroxiredoxin and ascorbate peroxidase showed an altered
abundance. The analysis of local and systemic proteome changes suggests
the occurrence of a stress response in the shoots and the precocious
alteration of energy metabolism in roots and shoots. Furthermore,
our data indicate the possibility that ABA and ethylene participate
in the communicative network between root and shoot in the control
of rhizobial infection.