Special Issue "Symbiotic Nitrogen Fixation in Legume Nodules: Metabolism and Regulatory Mechanisms"
Deadline for manuscript submissions: closed (25 January 2014)
Dr. Lam-Son Phan Tran
Unit Leader, Signaling Pathway Research Unit, RIKEN Center for Sustainable Resource Science, 1-7-22 Suehiro-cho, Tsurumi-ku, Yokohama, 230-0045, Japan
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Interests: plants; environmental stress; signaling molecules, transcription factors; gene discovery and functional analysis; gene regulatory network; signal transduction
Dr. Saad Sulieman
Signaling Pathway Research Unit, RIKEN Center for Sustainable Resource Science, 1-7-22 Suehiro-cho, Tsurumi-ku, Yokohama, 230-0045, Japan
Interests: plant-microbe interactions; legumes; N2 fixation; abiotic stress; plant metabolism; plant adaptations; functional genomics
Symbiotic nitrogen fixation is important biological process in the development of sustainable agriculture by which the atmospheric nitrogen (N2) is converted to ammonia with the aid of a key enzyme called nitrogenase. It is achieved by bacteria inside the cells of de novo formed organs, the nodules, which usually develop on roots of various leguminous plants. This process is resulted from the complex interaction between the host plant and rhizobia (used as a colloquial reference to Rhizobium, Bradyrhizobium, Sinorhizobium and Mesorhizobium). This mutualistic relationship is beneficial for both symbiotic partners; the host plant provides the rhizobia with carbon and a source of energy for growth and functions while the rhizobia fix atmospheric N2 and provide the plant with a source of reduced nitrogen in the form of ammonium. To increase knowledge of this vital process of particular importance in sustainable agriculture, major emphasis should be laid on the nodule metabolism and various regulatory pathways. This special issue aims to cover, but not limited to, (i) identification and functional analyses of the genes responsible in rhizobia and legumes, (ii) the physiological and biochemical bases of legume-rhizobia communication, and (iii) the signal transduction pathways responsible for the finely orchestrated induction of the symbiosis-specific genes involved in nodule establishment, development and functioning. A highlighted awareness of such knowledge remains a key element in designing strategies to enhance the productivity of legume crops by genetic engineering for higher performance.
Dr. Lam-Son Phan Tran
Dr. Saad Sulieman
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- nitrogen fixation
- carbon metabolism
- nitrogen metabolism
- oxygen supply