| There is now enzymological and cell biological evidence that a metabolic sequence is activated during senescence. |
| A pretreatment of cold-induction temperatures had little effect on the course of tissue senescence under these conditions. |
| Evolutionary senescence theory argues that organisms senesce because the power of natural selection decreases with age. |
| In many cases the plant exhibits symptoms similar to those seen during leaf senescence before cell death occurs. |
| Music was for kids, and all the old geniuses that I had revered had either become defunct, died or fallen into senescence. |
| Oxidative processes during senescence involve an increase in enzyme activities generating oxygen radicals and superoxide ions. |
