Journal
CURRENT OPINION IN BIOTECHNOLOGY
Volume 21, Issue 5, Pages 599-603Publisher
CURRENT BIOLOGY LTD
DOI: 10.1016/j.copbio.2010.05.006
Keywords
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Funding
- National Institutes of Health [5R01AI068718]
- Chemical Sciences, Geosciences and Biosciences Division, Office of Basic Energy Sciences, Office of Science, U.S. Department of Energy [DE-FG02-91ER20021]
- NATIONAL INSTITUTE OF ALLERGY AND INFECTIOUS DISEASES [R01AI068718] Funding Source: NIH RePORTER
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Stomata are microscopic pores formed by pairs of guard cells in the epidermis of terrestrial plants; they are essential for gas exchange with the environment and controlling water loss. Accordingly, plants regulate stomatal aperture in response to environmental conditions, such as relative humidity, CO2 concentration, and light intensity. Stomatal openings are also a major route of pathogen entry into the plant and plants have evolved mechanisms to regulate stomatal aperture as an immune response against bacterial invasion. In this review, we highlight studies that begin to elucidate signaling events involved in bacterium-triggered stomatal closure and discuss how pathogens may have exploited environmental conditions or, in some cases, have evolved virulence factors to actively counter stomatal closure to facilitate invasion.
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