Ultraviolet-B exposure leads to up-regulation of senescence-associated genes in Arabidopsis thaliana.
Exposure to UV-B radiation resulted in a loss of chlorophyll and an increase in lipid damage in a similar manner to that induced during natural senescence. In addition, exposure to UV-B led to the induction of a number of genes associated with senescence (SAG12, 13, 14, and 17). These results show, for the first time, that exposure to UV-B can lead to cellular decline through active and regulated processes involving many genes also associated with natural senescence.
John
C F
CF
Department of Plant Genetics and Biotechnology, Horticulture Research International, Wellesbourne, Warwick CV35 9EF, UK.
Morris
K
K
Jordan
B R
BR
Thomas
B
B
A-H-Mackerness
S
S
D017360:Arabidopsis / Q000235:genetics* / Q000528:radiation effects; D015152:Blotting, Northern; D016922:Cellular Senescence / Q000235:genetics / Q000528:radiation effects; D002734:Chlorophyll / Q000378:metabolism; D018506:Gene Expression Regulation, Plant / Q000528:radiation effects*; D015227:Lipid Peroxidation; D010788:Photosynthesis / Q000235:genetics / Q000528:radiation effects; D018749:RNA, Plant / Q000302:isolation & purification; D014466:Ultraviolet Rays
D018749:RNA, Plant; D002734:Chlorophyll