Event Title

Impact of rhizobia inoculation timing on the expression of plant defense in lima beans.

Faculty Advisor

Dr. Alissa Packer

Start Date

23-4-2019 5:00 PM

End Date

23-4-2019 6:00 PM

Description

Rhizobia are nitrogen-fixing bacteria that form mutualistic relationships with legumes such as lima beans. This relationship can alter the plant’s intake of resources which may affect the overall growth or possibly the defenses of the plant. One such defense mechanism would be extrafloral nectaries (EFNs). These EFNs produce nectar, which can attract beneficial organisms that prey on herbivores. We were interested in how the timing of rhizobia inoculation would affect the expression of plant defense and hypothesized that there would be a greater impact on plant defense when lima beans were inoculated at earlier stages of the plant’s life. In order to measure plant defenses, the number of EFNs present were used to assess investment in defense. 3 weeks after these inoculations, EFN numbers will be counted. In better understanding the relationships of these three variables, we may be able to find other green ways to protect crops from herbivory.

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Apr 23rd, 5:00 PM Apr 23rd, 6:00 PM

Impact of rhizobia inoculation timing on the expression of plant defense in lima beans.

Rhizobia are nitrogen-fixing bacteria that form mutualistic relationships with legumes such as lima beans. This relationship can alter the plant’s intake of resources which may affect the overall growth or possibly the defenses of the plant. One such defense mechanism would be extrafloral nectaries (EFNs). These EFNs produce nectar, which can attract beneficial organisms that prey on herbivores. We were interested in how the timing of rhizobia inoculation would affect the expression of plant defense and hypothesized that there would be a greater impact on plant defense when lima beans were inoculated at earlier stages of the plant’s life. In order to measure plant defenses, the number of EFNs present were used to assess investment in defense. 3 weeks after these inoculations, EFN numbers will be counted. In better understanding the relationships of these three variables, we may be able to find other green ways to protect crops from herbivory.