<p> <i>Macrophomina phaseolina</i> is a generalist ascomycetic fungal pathogen, capable of infecting over 500 genera of plants and limiting yield in crops grown in Mississippi. Recent documentation of <i>M. phaseolina </i> on <i>Impatiens</i> × <i>hybrida,</i> a newfound host, has merited multiple experiments to quantify the exact nature of this relationship. Despite <i>M. phaseolina</i> being a soil-borne pathogen, disease symptoms were only reported in aboveground tissue. Mode of infection experiments revealed both above and belowground tissues are susceptible to infection. <i>In vitro</i> experiments identified the optimal temperature for the growth of <i>M. phaseolina</i> to be 26°C, where more than 10x the accumulated biomass resulted compared to samples grown at 37°C. <i>Impatiens</i> × <i>hybrida</i> hosts were particularly prone to infection at temperatures above 27°C. <i> In vitro</i> fungicide assays revealed Banrot and T-Bird to be suitable chemical control agents for limiting <i>M. phaseolina</i> growth. </p><p>
| Identifer | oai:union.ndltd.org:PROQUEST/oai:pqdtoai.proquest.com:10841492 |
| Date | 20 September 2018 |
| Creators | McLoughlin, Patrick Henry, Jr. |
| Publisher | Mississippi State University |
| Source Sets | ProQuest.com |
| Language | English |
| Detected Language | English |
| Type | thesis |
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