Luke Haas

Luke Haas

Assessing common bean (phaseolus vulgaris) under water stress


Luke Haas, Saima Kamir, Samuel Martins


Samuel Martins


College of Agricultural and Life Sciences


With the global population expected to exceed 9 billion by 2050, food production needs to increase by 70% while facing climate change challenges, such as drought stresses. To develop strategies of preventing losses caused by water stress, an understanding of the effect of drought on growth of root, shoot, yield and bacterial interactions is paramount. The objective of this study was to assess the common bean (Phaseolus vulgaris) plant growth parameters under water stress. Common bean plants were subjected to water stress by reducing the water irrigation to 30% of the soil field capacity. Plants were kept under greenhouse conditions for 20 days, until plants were harvested and assessed for plant growth parameters: pod weight, number of pods, root weight, shoot weight, and shoot height. Pod number and root weight did not change significantly between the stressed plants and the control. On the other hand, shoot height and weight, as well as pod weight, were 15%, 106%, 86% higher respectively in the control plants. In this study, we showed that drought altered common bean plant’s phenotype by decreasing shoot height and weight, as well as the number of pods produced. For future research, parameters will be correlated with the abundance of bacterial taxa from the plants submitted or not to drought. Ultimately, bacterial taxa from stressed plants that correlate with any positive plant phenotype will be isolated and stored. They will then be tested for their role in mitigating drought via seed coat inoculations


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