Structure and Development of the Legume-Rhizobial Symbiotic Interface in Infection Threads

The intracellular infection thread initiated in a root hair cell is a unique structure associated with <i>Rhizobium</i>-legume symbiosis. It is characterized by inverted tip growth of the plant cell wall, resulting in a tunnel that allows invasion of host cells by bacteria during the for...

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Main Authors: Anna V. Tsyganova, Nicholas J. Brewin, Viktor E. Tsyganov
Format: Article
Language:English
Published: MDPI AG 2021-04-01
Series:Cells
Subjects:
Online Access:https://www.mdpi.com/2073-4409/10/5/1050
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author Anna V. Tsyganova
Nicholas J. Brewin
Viktor E. Tsyganov
author_facet Anna V. Tsyganova
Nicholas J. Brewin
Viktor E. Tsyganov
author_sort Anna V. Tsyganova
collection DOAJ
description The intracellular infection thread initiated in a root hair cell is a unique structure associated with <i>Rhizobium</i>-legume symbiosis. It is characterized by inverted tip growth of the plant cell wall, resulting in a tunnel that allows invasion of host cells by bacteria during the formation of the nitrogen-fixing root nodule. Regulation of the plant-microbial interface is essential for infection thread growth. This involves targeted deposition of the cell wall and extracellular matrix and tight control of cell wall remodeling. This review describes the potential role of different actors such as transcription factors, receptors, and enzymes in the rearrangement of the plant-microbial interface and control of polar infection thread growth. It also focuses on the composition of the main polymers of the infection thread wall and matrix and the participation of reactive oxygen species (ROS) in the development of the infection thread. Mutant analysis has helped to gain insight into the development of host defense reactions. The available data raise many new questions about the structure, function, and development of infection threads.
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spelling doaj.art-2c8949907f42475f92e759242c4b2b562023-11-21T17:43:57ZengMDPI AGCells2073-44092021-04-01105105010.3390/cells10051050Structure and Development of the Legume-Rhizobial Symbiotic Interface in Infection ThreadsAnna V. Tsyganova0Nicholas J. Brewin1Viktor E. Tsyganov2Laboratory of Molecular and Cellular Biology, All-Russia Research Institute for Agricultural Microbiology, 196608 Saint Petersburg, RussiaFormerly Emeritus Fellow, John Innes Centre, Norwich NR4 7UH, UKLaboratory of Molecular and Cellular Biology, All-Russia Research Institute for Agricultural Microbiology, 196608 Saint Petersburg, RussiaThe intracellular infection thread initiated in a root hair cell is a unique structure associated with <i>Rhizobium</i>-legume symbiosis. It is characterized by inverted tip growth of the plant cell wall, resulting in a tunnel that allows invasion of host cells by bacteria during the formation of the nitrogen-fixing root nodule. Regulation of the plant-microbial interface is essential for infection thread growth. This involves targeted deposition of the cell wall and extracellular matrix and tight control of cell wall remodeling. This review describes the potential role of different actors such as transcription factors, receptors, and enzymes in the rearrangement of the plant-microbial interface and control of polar infection thread growth. It also focuses on the composition of the main polymers of the infection thread wall and matrix and the participation of reactive oxygen species (ROS) in the development of the infection thread. Mutant analysis has helped to gain insight into the development of host defense reactions. The available data raise many new questions about the structure, function, and development of infection threads.https://www.mdpi.com/2073-4409/10/5/1050arabinogalactan proteincell wallextensininfection threadlegumepectin
spellingShingle Anna V. Tsyganova
Nicholas J. Brewin
Viktor E. Tsyganov
Structure and Development of the Legume-Rhizobial Symbiotic Interface in Infection Threads
Cells
arabinogalactan protein
cell wall
extensin
infection thread
legume
pectin
title Structure and Development of the Legume-Rhizobial Symbiotic Interface in Infection Threads
title_full Structure and Development of the Legume-Rhizobial Symbiotic Interface in Infection Threads
title_fullStr Structure and Development of the Legume-Rhizobial Symbiotic Interface in Infection Threads
title_full_unstemmed Structure and Development of the Legume-Rhizobial Symbiotic Interface in Infection Threads
title_short Structure and Development of the Legume-Rhizobial Symbiotic Interface in Infection Threads
title_sort structure and development of the legume rhizobial symbiotic interface in infection threads
topic arabinogalactan protein
cell wall
extensin
infection thread
legume
pectin
url https://www.mdpi.com/2073-4409/10/5/1050
work_keys_str_mv AT annavtsyganova structureanddevelopmentofthelegumerhizobialsymbioticinterfaceininfectionthreads
AT nicholasjbrewin structureanddevelopmentofthelegumerhizobialsymbioticinterfaceininfectionthreads
AT viktoretsyganov structureanddevelopmentofthelegumerhizobialsymbioticinterfaceininfectionthreads