Data/hora: 10/06/2024 01:30:55

Provedor de dados: 	Acta Botanica Brasilica	
País: 	Brazil	
Título: 	Elevated atmospheric CO2 increases Eucalyptus urophylla S. T. Blake stem diameter by stimulating cell proliferation and reducing lignin deposition	
Autores: 	Innocente,Patricia Sitta; Teixeira,Simone Pádua; Balbuena,Tiago Santana.	
Data: 	2020-09-01	
Ano: 	2020	
Palavras-chave: 	Carbon dioxide; Climate change; Eucalyptus; Lignin; Plant stress; Stem anatomy.	
Resumo: 	ABSTRACT In 2019, the atmospheric CO2 concentration exceeded the 415 ppm milestone for the first time in the human history. According to projections of the Intergovernmental Panel on Climate Change (IPCC), CO2 levels will continue to rise in the future, potentially affecting all living organisms. Plants with C3 metabolism may benefit from rising CO2 levels because the significant losses of photosynthesis, driven by photorespiration could be diminished under this scenario. This study addressed the anatomical changes in the stems of young Eucalyptus urophylla plants induced through cultivation in elevated CO2 (eCO2). Plants cultivated under eCO2 showed increased stem diameter (i.e., radial width of the secondary xylem, secondary phloem and cortex tissues). Periodic acid-Schiff (PAS)/Toluidine Blue staining suggested a decrease in the lignification content in the newly formed tissues of eCO2 stimulated plants. Levels of caffeate/5-hydroxyferulate O-methyltransferase form 1 (COMT1), a lignin biosynthesis specific proteoform, were significantly reduced in stem sections, supporting our findings: eCO2 induces plant growth, but reduces lignified tissues.	
Tipo: 	Info:eu-repo/semantics/other	
Idioma: 	Inglês	
Identificador: 	http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-33062020000300589	
Editor: 	Sociedade Botânica do Brasil	
Relação: 	10.1590/0102-33062020abb0107	
Formato: 	text/html	
Fonte: 	Acta Botanica Brasilica  v.34 n.3 2020	
Fonte: 	info:eu-repo/semantics/openAccess