Genome-wide characterization, evolution, and expression profiling of FBA gene family in response to light treatments and abiotic stress in Nicotiana tabacum.

Plant Signaling & Behavior
Ying ZhaoHui Wu

Abstract

Fructose 1,6-bisphosphate aldolase (FBA) as a key enzyme play crucial roles in glycolysis, gluconeogenesis and Calvin cycle processes in plants. However, limited information is known regarding FBA genes in Nicotiana tabacum. In this study, 16 FBAs were identified and characterized in Nicotiana tabacum. Phylogenetic analysis revealed that these genes can be categorized as type I (NtFBA1-10 located in chloroplast) and type II (NtFBA11-16 located in cytoplasm) subfamilies. According to the conserved motifs and gene structure analysis, NtFBA protein sequences had the highly homologous to FBAs in other species. Most members of the NtFBA gene family responded positively to NaHCO3 stress, especially the expression of NtFBA13/14 increased by 642%. In addition, the expression results of NtFBAs under five abiotic stress (light, NaCl, NaHCO3, drought, and cold) conditions were showed that NtFBA13/14 were highly up-regulated. qRT-PCR results showed that most of the NtFBAs expressed higher in leaves. NtFBA7/8 and NtFBA13/14 have important significance in photosynthesis and abiotic stress, respectively. This study provides a basis foundation for further elucidating the function of NtFBAs and the N. tabacum mechanism of resistance under abiot...Continue Reading

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Methods Mentioned

BETA
PCR

Software Mentioned

HMMER3
HMMER
CD
search
WoLF PSORT
BLASTp
MEME
ExPASy
MEGA
ClustalX2

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