Título:	Insights into soybean transcriptome reconfiguration under hypoxic stress: Functional, regulatory, structural, and compositional characterization.
Autoria:	NAKAYAMA, T. J. RODRIGUES, F. A. NEUMAIER, N. GOMES, J. M. MOLINARI, H. B. C. SANTIAGO, T. R. FORMIGHIERI, E. F. BASSO, M. F. FARIAS, J. R. B. EMYGDIO, B. M. OLIVEIRA, A. C. B. de CAMPOS, A. D. BORÉM, A. HARMON, F. G. MERTZ-HENNING, L. M. NEPOMUCENO, A. L.
Afiliação:	THIAGO J. NAKAYAMA, UFV; FABIANA A. RODRIGUES; NORMAN NEUMAIER, CNPSO; JULIANA MARCOLINO GOMES; HUGO BRUNO CORREA MOLINARI, CNPAE; THAÍS R. SANTIAGO; EDUARDO FERNANDES FORMIGHIERI, CNPAE; MARCOS F. BASSO; JOSE RENATO BOUCAS FARIAS, CNPSO; BEATRIZ MARTI EMYGDIO, CPACT; ANA CLAUDIA BARNECHE DE OLIVEIRA, CPACT; ANGELA DINIZ CAMPOS, CPACT; ALUÍZIO BORÉM, UFV; FRANK G. HARMON, University of California-Berkley; LILIANE MARCIA MERTZ HENNING, CNPSO; ALEXANDRE LIMA NEPOMUCENO, CNPSO.
Ano de publicação:	2017
Referência:	PLoS ONE, v. 12, n. 11, e0187920, 2017.
Conteúdo:	Soybean (Glycine max) is one of the major crops worldwide and flooding stress affects the production and expansion of cultivated areas. Oxygen is essential for mitochondrial aerobic respiration to supply the energy demand of plant cells. Because oxygen diffusion in water is 10,000 times lower than in air, partial (hypoxic) or total (anoxic) oxygen deficiency is important component of flooding. Even when oxygen is externally available, oxygen deficiency frequently occurs in bulky, dense or metabolically active tissues such as phloem, meristems, seeds, and fruits. In this study, we analyzed conserved and divergent root transcriptional responses between flood-tolerant Embrapa 45 and flood-sensitive BR 4 soybean cultivars under hypoxic stress conditions with RNA-seq. To understand how soybean genes evolve and respond to hypoxia, stable and differentially expressed genes were characterized structurally and compositionally comparing its mechanistic relationship. Between cultivars, Embrapa 45 showed less up- and more down-regulated genes, and stronger induction of phosphoglucomutase (Glyma05g34790), unknown protein related to N-terminal protein myristoylation (Glyma06g03430), protein suppressor of phyA-105 (Glyma06g37080), and fibrillin (Glyma10g32620). RNA-seq and qRT-PCR analysis of non-symbiotic hemoglobin (Glyma11g12980) indicated divergence in gene structure between cultivars. Transcriptional changes for genes in amino acids and derivative metabolic process suggest involvement of amino acids metabolism in tRNA modifications, translation accuracy/efficiency, and endoplasmic reticulum stress in both cultivars under hypoxia. Gene groups differed in promoter TATA box, ABREs (ABA-responsive elements), and CRT/DREs (C-repeat/dehydration-responsive elements) frequency. Gene groups also differed in structure, composition, and codon usage, indicating biological significances. Additional data suggests that cis-acting ABRE elements can mediate gene expression independent of ABA in soybean roots under hypoxia.
Thesagro:	Deficiência Oxigênio Soja
NAL Thesaurus:	Soybeans Hypoxia
Palavras-chave:	Hipóxia Inoxia
Digital Object Identifier:	10.1371/journal.pone.0187920
Tipo do material:	Artigo de periódico
Acesso:	openAccess
Aparece nas coleções:	Artigo em periódico indexado (CNPSO)