Legume Research

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Research Article

Legume Research, volume 42 issue 4 (august 2019) : 461-466

Genome-wide identification and characterization of the Phenylalanine Ammonia-lyase (PAL) gene family in Medicago truncatula

Wei Ren, Yingzhe Wang, Ankai Xu, Yunge Zhao
1Institute of Soil and Water Conservation, Chinese Academy of Sciences and Ministry of Water Resources, 26 Xinong Road, Yangling-712 100, Shaanxi, China.

  • Submitted18-05-2018|

  • Accepted26-03-2019|

  • First Online 24-05-2019|

  • doi 10.18805/LR-431

Cite article:- Ren Wei, Wang Yingzhe, Xu Ankai, Zhao Yunge (2019). Genome-wide identification and characterization of the Phenylalanine Ammonia-lyase (PAL) gene family in Medicago truncatula. Legume Research. 42(4): 461-466. doi: 10.18805/LR-431.

ABSTRACT

Phenylalanine ammonia-lyase (PAL) catalyzes the rate-limiting step of phenylpropanoid biosynthesis in plants and supplies precursors for a variety of secondary metabolites, such as flavonoids, lignins and stilbenes. The first draft of the full Medicago truncatula genome assembly has been released. However it is observed that, the PAL gene family from Medicago truncatula (MtPAL genes) has not been characterized in detail. In this study, a comprehensive analysis of the Medicago truncatula PAL gene family is presented, including chromosomal locations, phylogenetic analyses, gene structures, three-dimensional (3D) structures and expression patterns. Six Medicago truncatula PAL genes that encode PAL proteins were identified in the Medicago truncatula genome. It was shown that MtPAL genes are distributed on four chromosomes. Dynamic expression patterns of MtPAL genes were observed in different tissues and abiotic stresses, suggesting that MtPAL genes may play important roles in the regulation of development and stress responses in Medicago truncatula.

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