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Genome-Wide Identification and Characterization of FBA Gene Family in Polyploid Crop Brassica napus.


ABSTRACT: Fructose-1,6-bisphosphate aldolase (FBA) is a versatile metabolic enzyme involved in multiple important processes of glycolysis, gluconeogenesis, and Calvin cycle. Despite its significance in plant biology, the identity of this gene family in oil crops is lacking. Here, we performed genome-wide identification and characterization of FBAs in an allotetraploid species, oilseed rape Brassica napus. Twenty-two BnaFBA genes were identified and divided into two groups based on integrative analyses of functional domains, phylogenetic relationships, and gene structures. Twelve and ten B. napus FBAs (BnaFBAs) were predicted to be localized in the chloroplast and cytoplasm, respectively. Notably, synteny analysis revealed that Brassica-specific triplication contributed to the expansion of the BnaFBA gene family during the evolution of B. napus. Various cis-acting regulatory elements pertinent to abiotic and biotic stresses, as well as phytohormone responses, were detected. Intriguingly, each of the BnaFBA genes exhibited distinct sequence polymorphisms. Among them, six contained signatures of selection, likely having experienced breeding selection during adaptation and domestication. Importantly, BnaFBAs showed diverse expression patterns at different developmental stages and were preferentially highly expressed in photosynthetic tissues. Our data thus provided the foundation for further elucidating the functional roles of individual BnaFBA and also potential targets for engineering to improve photosynthetic productivity in B. napus.

SUBMITTER: Zhao W 

PROVIDER: S-EPMC6888112 | biostudies-literature | 2019 Nov

REPOSITORIES: biostudies-literature

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Genome-Wide Identification and Characterization of <i>FBA</i> Gene Family in Polyploid Crop <i>Brassica</i> napus.

Zhao Wei W   Liu Hongfang H   Zhang Liang L   Hu Zhiyong Z   Liu Jun J   Hua Wei W   Xu Shouming S   Liu Jing J  

International journal of molecular sciences 20191115 22


Fructose-1,6-bisphosphate aldolase (FBA) is a versatile metabolic enzyme involved in multiple important processes of glycolysis, gluconeogenesis, and Calvin cycle. Despite its significance in plant biology, the identity of this gene family in oil crops is lacking. Here, we performed genome-wide identification and characterization of <i>FBAs</i> in an allotetraploid species, oilseed rape <i>Brassica napus</i>. Twenty-two <i>BnaFBA</i> genes were identified and divided into two groups based on int  ...[more]

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