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West Ashley Library
9 a.m. - 6 p.m.
Phone: (843) 766-6635
Folly Beach Library
9 a.m. - 1 p.m.
Phone: (843) 588-2001
Edgar Allan Poe/Sullivan's Island Library
Closed for renovations
Phone: (843) 883-3914
Wando Mount Pleasant Library
9 a.m. - 6 p.m.
Phone: (843) 805-6888
Village Library
9 a.m. - 6 p.m.
Phone: (843) 884-9741
St. Paul's/Hollywood Library
9 a.m. - 6 p.m.
Phone: (843) 889-3300
Otranto Road Library
9 a.m. - 6 p.m.
Phone: (843) 572-4094
Mt. Pleasant Library
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McClellanville Library
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Keith Summey North Charleston Library
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John's Island Library
9 a.m. - 6 p.m.
Phone: (843) 559-1945
Hurd/St. Andrews Library
9 a.m. - 6 p.m.
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Miss Jane's Building (Edisto Library Temporary Location)
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Dorchester Road Library
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Phone: (843) 722-7550
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Phone: (843) 795-6679
Main Library
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Phone: (843) 805-6930
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Temperature-mediated biosynthesis of the phytotoxin phaseolotoxin by Pseudomonas syringae pv. phaseolicola depends on the autoregulated expression of the phtABC genes.
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- Author(s): Aguilera, Selene; Alvarez-Morales, Ariel; Murillo, Jesús; Hernández-Flores, José Luis; Bravo, Jaime; De la Torre-Zavala, Susana
- Source:
PLoS ONE; 6/1/2017, Vol. 12 Issue 6, p1-15, 15p- Subject Terms:
- Source:
- Additional Information
- Abstract: Pseudomonas syringae pv. phaseolicola produces phaseolotoxin in a temperature dependent manner, being optimally synthesized between 18°C and 20°C, while no detectable amounts are present above 28°C. The Pht cluster, involved in the biosynthesis of phaseolotoxin, contains 23 genes that are organized in five transcriptional units. The function of most of the genes from the Pht cluster is still unknown and little information about the regulatory circuitry leading to expression of these genes has been reported. The purpose of the present study was to investigate the participation of pht genes in the regulation of the operons coded into the Pht cluster. We conducted Northern blot, uidA fusions and reverse transcription-PCR assays of pht genes in several mutants unable to produce phaseolotoxin. This allowed us to determine that, in P. syringae pv. phaseolicola NPS3121, genes phtABC are essential to prevent their own expression at 28°C, a temperature at which no detectable amounts of the toxin are present. We obtained evidence that the phtABC genes also participate in the regulation of the phtD, phtM and phtL operons. According to our results, we propose that PhtABC and other Pht product activities could be involved in the synthesis of the sulfodiaminophosphinyl moiety of phaseolotoxin, which indirectly could be involved in the transcriptional regulation of the phtA operon. [ABSTRACT FROM AUTHOR]
- Abstract: Copyright of PLoS ONE is the property of Public Library of Science and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)
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