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Comprehensive Study of the Genes Involved in Chlorophyll Synthesis and Degradation Pathways in Some Monocot and Dicot Plant Species by Begum, Yasmin; Mondal, Sunil Kanti is a Biochemistry, Genetics and Molecular Biology article available to read on EtoBox.

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Chlorophyll (Chl) biosynthesis is one of the most important cellular processes essential for plant photosynthesis. Chl degradation pathway is also important catabolic process occurs during leaf senescence, fruit ripening and under biotic or abiotic stress conditions. Here we have systematically investigated the molecular evolution, gene structure, compositional analysis along with ENc plot, correspondence analysis and codon usage bias of the proteins and encoded genes involved in Chl metabolism from monocots and dicots. The gene and species specific phylogenetic trees using amino acid sequences showed clear clustering formation of the selected species based on monocots and dicots but not supported by 18S rRNA. Nucleotide composition of the encoding genes showed that average GC%, GC1%, GC2% and GC3% were higher in monocots. RSCU analysis depicts that genes from monocots for both pathways and genes for synthesis pathway from dicots only biased to G/C-ending synonymous codons but in degradation pathway most optimal codons (except UUG) in dicots biased to A/U-ending synonymous codons. We found strong evidence of episodic diversifying selection at several amino acid sites in all genes i

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Author

Begum, Yasmin; Mondal, Sunil Kanti

Publisher

Adenine Press; Informa UK (Taylor & Francis); Taylor & Francis; Informa UK Limited (ISSN 0739-1102)

Published

2020

Language

EN

Field

Biochemistry, Genetics and Molecular Biology (Life Sciences)