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Comparison of radiosensitivity response to acute and chronic gamma irradiation in colored wheat Genet. Mol. Biol.
Hong,Min Jeong; Kim,Dae Yeon; Ahn,Joon-Woo; Kang,Si-Yong; Seo,Yong Weon; Kim,Jin-Baek.
Abstract We aimed to investigate the biological responses induced by acute and chronic gamma irradiation in colored wheat seeds rich in natural antioxidants. After acute and chronic irradiation, the phenotypic effects on plant growth, germination rate, seedling height, and root length were examined, and the biochemical changes were investigated by analyzing the expression of antioxidant enzyme-related genes, antioxidant enzyme activities, and total antioxidant capacity. High dosages of chronic radiation reduced plant growth compared with the controls. Electron spin resonance measurement and 2,2-diphenyl-1-picrylhydrazyl activity analysis showed lower amount of free radicals in colored wheat seeds on chronic irradiation with low dosage of gamma rays...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Acute irradiation; Chronic irradiation; Wheat; Electron spin resonance; Anthocyanin.
Ano: 2018 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1415-47572018000400611
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Provenance changes in fine detrital quartz in the inner shelf sediments of the East China Sea associated with shifts in the East Asian summer monsoon front during the last 6 kyrs ArchiMer
Wang, Ke; Tada, Ryuji; Zheng, Hongbo; Irino, Tomohisa; Zhou, Bin; Saito, Keita.
The inner shelf sediments of the East China Sea (ECS) preserve valuable information regarding climatic changes on land through detrital material discharged from large rivers, particularly the Yangtze River. In this paper, we examine the provenance changes of fine-grained detrital quartz preserved in the sediment of the MD06-3040 core retrieved from the mud belt on the inner shelf of the ECS during the last 6 kyrs. The provenance of the fine silt fraction (4–16 μm) of the sediments, which is considered to represent the suspended particulate matter (SPM) from the Yangtze River, is estimated based on the electron spin resonance (ESR) signal intensity and crystallinity index (CI) of quartz. By comparing the ESR signal intensity and CI of quartz in the fine...
Tipo: Text Palavras-chave: Electron spin resonance; Crystallinity index; East Asian summer monsoon; The Yangtze River drainage; The East China Sea.
Ano: 2020 URL: https://archimer.ifremer.fr/doc/00607/71886/70584.pdf
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Structural properties of lipid reconstructs and lipid composition of normotensive and hypertensive rat vascular smooth muscle cell membranes BJMBR
Oliveira,T.R.; Lamy,M.T.; De Paula,U.M.; Guimarães,L.L.; Toledo,M.S.; Takahashi,H.K.; Straus,A.H.; Lindsey,C.J.; Paiva,T.B..
Multiple cell membrane alterations have been reported to be the cause of various forms of hypertension. The present study focuses on the lipid portion of the membranes, characterizing the microviscosity of membranes reconstituted with lipids extracted from the aorta and mesenteric arteries of spontaneously hypertensive (SHR) and normotensive control rat strains (WKY and NWR). Membrane-incorporated phospholipid spin labels were used to monitor the bilayer structure at different depths. The packing of lipids extracted from both aorta and mesenteric arteries of normotensive and hypertensive rats was similar. Lipid extract analysis showed similar phospholipid composition for all membranes. However, cholesterol content was lower in SHR arteries than in...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Smooth muscle cell lipids; Membrane microviscosity; Spontaneously hypertensive rats; Lipid composition; Spin label; Electron spin resonance.
Ano: 2009 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-879X2009000900012
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