Quorum sensing in Erwinia carotovora is mediated by N‐acylhomoserine lactones, small molecules released from the bacterial cells into the surrounding medium.

TLS Online TPP Program

#Id: 9282

#XL - S Microbiology

Plant genes expressed early, or in the absence of bacterial infection, are termed “early nodulins” or ENOD

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#Id: 9283

#XL - S Microbiology

Three factors are important in maintaining low O2 concentrations in nodules. 

First, entry of O2 into the nodule is controlled by a variable‐permeability barrier in the nodule parenchyma

TLS Online TPP Program

#Id: 9284

#XL - S Microbiology

O2‐binding plant protein Lb plays an active role in regulating and delivering O2 in the infected cells

Bacterial respiration is the major O2 sink

TLS Online TPP Program

#Id: 9285

#XL - S Microbiology

O2‐sensitive hemoprotein kinase FixL controls a regulatory cascade that activates transcription of nitrogen fixation genes

TLS Online TPP Program

#Id: 9290

#XL - S Microbiology

Ammonium uptake from the soil is carried by AMT/Rh family transporters

TLS Online TPP Program

#Id: 9291

#XL - S Microbiology

Two types of symporters (NRT1 and NRT2) and one antiporter (CLC) are involved in nitrate transport in plants.