Chinese Bulletin of Botany ›› 2013, Vol. 48 ›› Issue (5): 519-530.DOI: 10.3724/SP.J.1259.2013.00519
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Xinyu Zhu*, Wansheng Lü, Chunmei Yu, Baohua Wang
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;Natural Science Foundation of China
Abstract: The nodule inception gene Nin is related to early stages of root nodule formation in the model plant Lotus japonicus. Functionally, its homologs, Nin-like genes, are also involved in N metabolism. In this study, Nin-like gene data were retrieved from completely sequencing genomes of legume and non-legume plants for investigating phylogeny to trace the divergence of genes and proteins and build relationships between structural divergence and functional differentiation. We revealed novel Nin-like genes; previously resolved orthologous groups were recovered and their sister relationships resolved. Nin-like genes showed a diversity of structures, which supports the results of phylogenetic and functional studies; OsNLP5 from Oryza sativa was found to be intronless, which probably originated from a gene retroposition event. We found discrepancies in domain organizations and functional sites among NIN-like proteins, which indicates possible functional differentiation. 3-D structural analysis revealed the occurrence of significant conformational changes in GAF domains of NIN-like proteins from nodule legume plants, which could become the basis of recruitment as nodule inception genes. Our findings will contribute to the design of further experimental studies.
CLC Number:
Q111.9
Xinyu Zhu, Wansheng Lü, Chunmei Yu, Baohua Wang. Evolution of the Nodule Inception-like Genes: Structural Divergence and Functional Differentiation[J]. Chinese Bulletin of Botany, 2013, 48(5): 519-530.
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URL: https://www.chinbullbotany.com/EN/10.3724/SP.J.1259.2013.00519
https://www.chinbullbotany.com/EN/Y2013/V48/I5/519