Seeing the Light: The Roles of Red- and Blue-Light Sensing in Plant Microbes

Gwyn A Beattie; Bridget M Hatfield; Haili Dong; Regina S McGrane

doi:10.1146/annurev-phyto-080417-045931

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Seeing the Light: The Roles of Red- and Blue-Light Sensing in Plant Microbes

Journal article

Open access

Peer reviewed

Seeing the Light: The Roles of Red- and Blue-Light Sensing in Plant Microbes

Gwyn A Beattie, Bridget M Hatfield, Haili Dong and Regina S McGrane

Annual review of phytopathology, Vol.56(1), pp.41-66

08/25/2018

DOI: 10.1146/annurev-phyto-080417-045931

PMID: 29768135

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https://doi.org/10.1146/annurev-phyto-080417-045931View

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Abstract

Plants collect, concentrate, and conduct light throughout their tissues, thus enhancing light availability to their resident microbes. This review explores the role of photosensing in the biology of plant-associated bacteria and fungi, including the molecular mechanisms of red-light sensing by phytochromes and blue-light sensing by LOV (light-oxygen-voltage) domain proteins in these microbes. Bacteriophytochromes function as major drivers of the bacterial transcriptome and mediate light-regulated suppression of virulence, motility, and conjugation in some phytopathogens and light-regulated induction of the photosynthetic apparatus in a stem-nodulating symbiont. Bacterial LOV proteins also influence light-mediated changes in both symbiotic and pathogenic phenotypes. Although red-light sensing by fungal phytopathogens is poorly understood, fungal LOV proteins contribute to blue-light regulation of traits, including asexual development and virulence. Collectively, these studies highlight that plant microbes have evolved to exploit light cues and that light sensing is often coupled with sensing other environmental signals.

Bacteria - metabolism

Bacteria - radiation effects

Bacterial Proteins - metabolism

Fungal Proteins - metabolism

Fungi - metabolism

Fungi - radiation effects

Light

Phytochrome - metabolism

Phytochrome - radiation effects

Plants - microbiology

Details

Title: Subtitle: Seeing the Light: The Roles of Red- and Blue-Light Sensing in Plant Microbes
Creators: Gwyn A Beattie - Iowa State University
Bridget M Hatfield - Iowa State University
Haili Dong - Iowa State University
Regina S McGrane - Southwestern Oklahoma State University
Resource Type: Journal article
Publication Details: Annual review of phytopathology, Vol.56(1), pp.41-66
DOI: 10.1146/annurev-phyto-080417-045931
PMID: 29768135
NLM abbreviation: Annu Rev Phytopathol
eISBN: 0824313569; 9780824313562
ISSN: 0066-4286
eISSN: 1545-2107
Language: English
Date published: 08/25/2018
Academic Unit: Microbiology and Immunology
Record Identifier: 9984695686102771

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