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Elevated atmospheric CO2 increases Eucalyptus urophylla S. T. Blake stem diameter by stimulating cell proliferation and reducing lignin deposition Acta Botanica
Innocente,Patricia Sitta; Teixeira,Simone Pádua; Balbuena,Tiago Santana.
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)....
Tipo: Info:eu-repo/semantics/other Palavras-chave: Carbon dioxide; Climate change; Eucalyptus; Lignin; Plant stress; Stem anatomy.
Ano: 2020 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-33062020000300589
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Water deficiency at different developmental stages of Glycine max can improve drought tolerance Bragantia
Kron,Alan Panaia; Souza,Gustavo Maia; Ribeiro,Rafael Vasconcelos.
Developmental windows are specific periods of sensitivity during normal plant development in which a perturbation may be adaptively integrated. In these periods, sub-lethal environmental perturbations may improve the capacity to grow at lethal conditions. The aim of this study was to test the hypothesis that previous non-lethal water deficit applied in different developmental stages in soybean plants could enables them to improve the tolerance to environmental perturbations. In order to test this hypothesis we carried out an experiment with soybean plants submitted to water deficit in different stages of plant development, evaluating yield and physiological aspects. Our results indicated that water deficit experienced on V4 stage (vegetative) induces more...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Crop yield; Photosynthesis; Plant stress; Soybean.
Ano: 2008 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0006-87052008000100005
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