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Regulation of Bacterial Growthand Behavior by Host Plant
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DOI：10.1146/annurev-phyto-010824-023359.png)
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Abstract
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Plants are associated with diverse bacteria in nature. Some bacteria arepathogens that decrease plant fitness, and others are beneficial bacteria thatpromote plant growth and stress resistance.Emerging evidence also suggeststhat plant-associated commensal bacteria collectively contribute to planthealth and are essential for plant survival in nature. Bacteria with differentcharacteristics simultaneously colonize plant tissues. Thus, plants need toaccommodate bacteria that provide service to the host plants, but they needto defend against pathogens at the same time. How do plants achieve this?In this review, we summarize how plants use physical barriers, control com-mon goods such as water and nutrients, and produce antibacterial moleculesto regulate bacterial growth and behavior. Furthermore, we highlight thatplants use specialized metabolites that support or inhibit specific bacteria,thereby selectively recruiting plant-associated bacterial communities andregulating their function. We also raise important questions that need tobe addressed to improve our understanding of plant-bacteria interactions.
Keywords:
plant immunity
bacterial virulence
defense metabolites
antibacterial mechanism
specialized metabolites
plant microbiota
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