Abstract
Nitrate, ammonium, or a combination of both is the form of N available for nitrogen assimilation from soil by the plants. Nitrogen is an important and integral part of amino acids, nucleotides, and defense molecules. Hence it is very important to study the role of nitrate and ammonium nutrition in plant defense via hypersensitive response (HR). Shifting plants from ammonium nitrate Hoagland solution to nitrate Hoagland nutrition slightly enhances root length and leaf area. HR phenotype is different in nitrate and ammonium grown plants when challenged with avirulent Pseudomonas syringae DC3000 avrRpm1. HR is also associated with increased production of reactive oxygen species (ROS) and nitric oxide (NO). Hence to understand HR development it is essential to measure HR lesions, cell death, ROS, NO, and bacterial growth. Here we provide a stepwise protocol of various parameters to study HR in Arabidopsis in response to nitrate and ammonium nutrition.
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Acknowledgments
NS is a recipient of JRF and SRF from CSIR, India. PS and PKP are recipients of UGC JRF and SRF. This work is supported by SERB Early Carrier Research Award to KJG by SERB, Govt. of India.
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Singh, N., Singh, P., Pathak, P.K., Gupta, K.J. (2020). Using Different Forms of Nitrogen to Study Hypersensitive Response Elicited by Avirulent Pseudomonas syringae . In: Gupta, K. (eds) Nitrogen Metabolism in Plants. Methods in Molecular Biology, vol 2057. Humana, New York, NY. https://doi.org/10.1007/978-1-4939-9790-9_8
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DOI: https://doi.org/10.1007/978-1-4939-9790-9_8
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