Li G, FT Yang, XL Jiang, FX Chen, TH Cao, LC Wang

Phyton-International Journal of Experimental Botany, Vol.82, pp. 243-247, 2013, DOI:10.32604/phyton.2013.82.243

Abstract The aim of this study was to evaluate the impact of the plow pan on the production of spring corn. We evaluated SPAD values and chloroplast ultrastructure in premature ear leaves of spring maize at the grain-filling stage. The maize plants were grown in simulated plow pan or simulated subsoiling treatments. Plants in the simulated plow pan treatment showed irreversible damage to chloroplasts, including changes in chloroplast shape, disintegration and rupture of chloroplast membranes, and blurriness and cloudiness of grana lamellae. The chlorophyll content decreased, which is a typical characteristic of senescence. Subsoiling cultivation practices resulted in chloroplasts with a… More >

LI KAILONG^1,2, DU XIAOLAN¹, HE YANI², ZHAO LIN¹, YANG JVRONG², SONG RUIHUA¹, CHEN LIN¹

BIOCELL, Vol.31, No.2, pp. 213-223, 2007, DOI:10.32604/biocell.2007.31.213

Abstract Objective: To investigate the course of tubular cell senescence and expressions of p53, p21, and Rb during the late phase of ischemia/reperfusion (IRI) in the kidney, and assess the effects of the p53-Rb pathway on tubular cell senescence. Methods: Experimental models of unilateral renal IRI were used in p53(+/+) and p53(-/-) mice. Histological changes at the tubular level, progress of cell senescence, and the expression of Rb, p21, and/or p53 proteins in tubular cells were studied at different moments in time after IRI. Results: Chronic tubulointerstitial fibrosis was much more severe and widely distributed in IRI kidneys of p53(+/+) mice… More >