**Main protocols described for regulated xanthomonads based on amplification of specific target DNAs.**

^  Disease  ^  Bacteria  ^  Conventional PCR  ^  qPCR <sup>1</sup>     ^  IA <sup>2</sup>    Methods  |
|  Onion bacterial blight  |  X. euvesicatoria pv. alli  |  [[https://journals.asm.org/doi/10.1128/AEM.02697-09|1]] |  [[https://www.sciencedirect.com/science/article/pii/S0167701215001396?via=ihub|2]] |  NA <sup>3</sup>     |
|  Citrus bacterial canker  |  X. citri pv. citri and aurantifolii pathotypes B and C  |  [[https://www.apsnet.org/publications/phytopathology/backissues/Documents/1996Abstracts/Phyto_86_95.htm|3]], [[https://journals.asm.org/doi/10.1128/AEM.68.3.1257-1264.2002|4]], [[https://sfamjournals.onlinelibrary.wiley.com/doi/10.1111/j.1365-2672.2005.02787.x|5]], [[https://www.sciencedirect.com/science/article/pii/S0944501305000741?via=ihub|6]], [[https://bsppjournals.onlinelibrary.wiley.com/doi/10.1111/j.1365-3059.2010.02390.x|7]], [[https://peerj.com/articles/7676/|8]] |  [[https://bmcmicrobiol.biomedcentral.com/articles/10.1186/s12866-020-01972-8|9]], [[https://apsjournals.apsnet.org/doi/10.1094/PHYTO.2004.94.1.61|10]], [[https://apsjournals.apsnet.org/doi/10.1094/PHYTO-95-1333|11]] |  [[https://bmcmicrobiol.biomedcentral.com/articles/10.1186/1471-2180-10-176|12]] |
|  Bacterial spot of stone fruits, walnut blight, hazelnut blight  |  X. arboricola pvs. pruni, corylina and juglandis  |  [[https://apsjournals.apsnet.org/doi/10.1094/PDIS-10-16-1481-RE|13]], [[https://link.springer.com/article/10.1007/s12275-010-0072-3|14]], [[https://www.sciencedirect.com/science/article/pii/S0167701219300417?via=ihub|15]], [[https://link.springer.com/article/10.1007/s42161-020-00505-6|16]] |  [[https://www.frontiersin.org/articles/10.3389/fmicb.2017.00573/full|17]], [[https://journals.asm.org/doi/10.1128/AEM.01593-10|18]], [[https://apsjournals.apsnet.org/doi/10.1094/PDIS-12-18-2253-RE|19]] |  [[https://bsppjournals.onlinelibrary.wiley.com/doi/10.1111/j.1365-3059.2012.02654.x|20]], [[https://www.ppjonline.org/journal/view.php?doi=10.5423/PPJ.OA.07.2019.0197|21]] |
|  Bacterial leaf blight and bacterial leaf streak of rice  |  X. oryzae pvs. oryzae and oryzicola  |  [[https://apsjournals.apsnet.org/doi/10.1094/PDIS-94-3-0311|22]], [[https://link.springer.com/article/10.1007/s002530100641|23]], [[https://pubmed.ncbi.nlm.nih.gov/18852502/|24]], [[https://apsjournals.apsnet.org/doi/10.1094/PDIS-06-10-0399|25]], [[https://www.sciencedirect.com/science/article/pii/S2095311912600471?via=ihub|26]], [[https://www.frontiersin.org/articles/10.3389/fmicb.2015.00791/full|27]], [[https://sfamjournals.onlinelibrary.wiley.com/doi/10.1111/jam.13094|28]] |  [[https://apsjournals.apsnet.org/doi/10.1094/PDIS-06-10-0399|25]], [[https://www.sciencedirect.com/science/article/pii/S0261219412001111?via=ihub|29]] |  [[https://journals.asm.org/doi/10.1128/AEM.00274-14|30]] |
|  Bacterial spot of tomato and sweet pepper  |  X. euvesicatoria pvs. euvesicatoria and perforans, X. hortorum pv. gardneri, X. vesicatoria  |  [[https://sfamjournals.onlinelibrary.wiley.com/doi/10.1111/j.1365-2672.2012.05431.x|31]], [[https://sfamjournals.onlinelibrary.wiley.com/doi/10.1111/j.1472-765X.2009.02690.x|32]], [[https://link.springer.com/article/10.1007/s10658-013-0225-4|33]], [[https://www.sciencedirect.com/science/article/pii/S0261219412002396?via=ihub|34]], [[https://www.sciencedirect.com/science/article/pii/S0261219419303242?via=ihub|35]], [[https://www.actahort.org/books/808/808_13.htm|36]] |  [[https://www.sciencedirect.com/science/article/pii/S0261219419303242?via=ihub|35]], [[https://linkinghub.elsevier.com/retrieve/pii/S0261219419303242|37]] |  [[https://www.nature.com/articles/s41598-018-32295-4|38]], [[https://apsjournals.apsnet.org/doi/10.1094/PHYTO-03-18-0101-R|39]], [[https://www.mdpi.com/2076-2607/8/9/1301|40]] |
|  Bacterial angular leaf spot of strawberry  |  X. fragariae  |  [[https://onlinelibrary.wiley.com/doi/10.1111/j.1365-2338.2005.00812.x|41]], [[https://www.sciencedirect.com/science/article/pii/S0167701204000946?via=ihub|42]], [[https://www.actahort.org/books/439/439_136.htm|43]], [[https://agris.fao.org/agris-search/search.do?recordID=IT2001060012|44]] |  [[https://apsjournals.apsnet.org/doi/10.1094/PHYTO-98-3-0359|45]], [[https://www.actahort.org/books/842/842_44.htm|46]], [[https://bsppjournals.onlinelibrary.wiley.com/doi/10.1111/j.1365-3059.2007.01813.x|47]] |  [[https://bsppjournals.onlinelibrary.wiley.com/doi/10.1111/ppa.12665|48]], [[https://journals.plos.org/plosone/article?id=10.1371/journal.pone.0147122|49]], [[https://apsjournals.apsnet.org/doi/10.1094/PDIS-10-19-2248-RE|50]], [[https://onlinelibrary.wiley.com/doi/10.1111/jph.12900|51]] |
|  Bacterial blight of anthurium and other aroids  |  X. phaseoli pv. dieffenbachiae  |  [[https://journals.asm.org/doi/10.1128/AEM.72.2.1072-1078.2006|52]], [[https://link.springer.com/article/10.1007/s10658-005-7062-z|53]], [[https://bsppjournals.onlinelibrary.wiley.com/doi/10.1111/ppa.12083|54]] |  [[https://www.sciencedirect.com/science/article/pii/S0167701219300417?via=ihub|15]] |  [[https://link.springer.com/article/10.1007/s10658-015-0653-4|55]] |
|  Bacterial leaf spot of poinsettia  |  X. axonopodis pv. poinsetticola  |  [[https://www.ppjonline.org/journal/view.php?id=10.5423/PPJ.OA.04.2015.0049|56]] |  NA  |  NA  |
|  Bacterial leaf streak  |  X. translucens pv. translucens  |  [[https://doi.org/10.1111/j.1365-2338.1995.tb01459.x|57]] |  NA  |  [[https://apsjournals.apsnet.org/doi/10.1094/PHYTO-08-16-0286-R|58]] |
|  Common blight of bean  |  X. phaseoli pv. phaseoli, X. citri pv. fuscans  |  [[https://www.apsnet.org/publications/phytopathology/backissues/Documents/1996Abstracts/Phyto_86_361.htm|59]] |  NA  |  [[https://apsjournals.apsnet.org/doi/10.1094/PDIS-02-19-0325-RE|60]] |

<sup>1</sup>  qPCR: quantitative real-time PCR; <sup>2</sup>  IA: isothermal amplification: <sup>3</sup>  NA: not applicable.