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Map-based cloning of the NIP gene in model legume Medicago truncatula.

Description: Large amounts of industrial fertilizers are used to maximize crop yields. Unfortunately, they are not completely consumed by plants; consequently, this leads to soil pollution and negative effects on aquatic systems. An alternative to industrial fertilizers can be found in legume plants that provide a nitrogen source that is not harmful for the environment. Legume plants, through their symbiosis with soil bacteria called rhizobia, are able to reduce atmospheric nitrogen into ammonia, a biologic… more
Date: May 2007
Creator: Morris, Viktoriya
Item Type: Refine your search to only Thesis or Dissertation
Partner: UNT Libraries
open access

Gene Expression Profiling of the nip Mutant in Medicago truncatula

Description: The study of root nodule symbiosis between nitrogen-fixing bacteria and leguminous plant species is important because of the ability to supplement fixed nitrogen fertilizers and increase plant growth in poor soils. Our group has isolated a mutant called nip in the model legume Medicago truncatula that is defective in nodule symbiosis. The nip mutant (numerous infections with polyphenolics) becomes infected by Sinorhizobium meliloti but then accumulates polyphenolic defense compounds in the no… more
Date: August 2007
Creator: McKethan, Brandon Lee
Item Type: Refine your search to only Thesis or Dissertation
Partner: UNT Libraries

Characterization of Infection Arrest Mutants of Medicago Truncatula and Genetic Mapping of Their Respective Genes.

Description: In response to compatible rhizobia, leguminous plants develop unique plant organs, root nodules, in which rhizobia fix nitrogen into ammonia. During nodule invasion, the rhizobia gain access to newly divided cells, the nodule primordia, in the root inner cortex through plant-derived cellulose tubes called infection threads. Infection threads begin in curled root hairs and bring rhizobia into the root crossing several cell layers in the process. Ultimately the rhizobia are deposited within nodul… more
Access: Restricted to the UNT Community Members at a UNT Libraries Location.
Date: May 2005
Creator: Veereshlingam, Harita
Item Type: Refine your search to only Thesis or Dissertation
Partner: UNT Libraries
open access

Physical Map between Marker 8O7 and 146O17 on the Medicago truncatula Linkage Group 1 that Contains the NIP Gene

Description: The Medicago truncatula NIP gene is located on M. truncatula Linkage Group 1. Informative recombinants showed crossovers that localize the NIP gene between markers 146O17 and 23C16D. Marker 164N9 co-segregates with the NIP gene, and the location of marker 164N9 is between markers 146O17 and 23C16D. Based upon data from the Medicago genome sequencing project, a subset of the model legume Medicago truncatula bacterial artificial chromosomes (BACs) were used to create a physical map on the DNA in … more
Date: December 2007
Creator: Lee, Yi-Ching
Item Type: Refine your search to only Thesis or Dissertation
Partner: UNT Libraries
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