Thanks for your question on plant senescense. I've located some
review articles for you.
The first can be found here:
Thomas H, Ougham HJ, Wagstaff C, Stead AD. Defining senescence and
death. J Exp Bot. 2003 Apr;54(385):1127-32.
The full text can be found here (link on the upper right of the page):
Here is the abstract for convenience:
"This article evaluates features of leaf and flower senescence that
are shared with, or are different from, those of other terminal events
in plant development. Alterations of plastid structure and function in
senescence are often reversible and it is argued that such changes
represent a process of transdifferentiation or metaplasia rather than
deterioration. It may be that the irreversible senescence of many
flowers and some leaves represents the loss of ancestral plasticity
during evolution. Reversibility serves to distinguish senescence
fundamentally from programmed cell death (PCD), as does the fact that
viability is essential for the initiation and progress of cell
senescence. Senescence (particularly its timing and location) requires
new gene transcription, but the syndrome is also subject to
significant post- transcriptional and post-translational regulation.
The reversibility of senescence must relate to the plastic,
facultative nature of underlying molecular controls. Senescence
appears to be cell-autonomous, though definitive evidence is required
to substantiate this. The vacuole plays at least three key roles in
the development of senescing cells: it defends the cell against biotic
and abiotic damage, thus preserving viability, it accumulates
metabolites with other functions, such as animal attractants, and it
terminates senescence by becoming autolytic and facilitating true cell
death. The mechanisms of PCD in plants bear a certain relation to
those of apoptosis, and some processes, such as nucleic acid
degradation, are superficially similar to aspects of the senescence
syndrome. It is concluded that, in terms of physiological components
and their controls, senescence and PCD are at best only distantly
Another review article can be found here:
Yoshida S. Molecular regulation of leaf senescence. Curr Opin Plant
Biol. 2003 Feb;6(1):79-84.
The full text can be found here:
Here is the abstract:
"Leaf senescence is a process of programmed cell death, which is
induced in an age-dependent manner and by various environmental cues.
The mechanisms that regulate the induction and progression of leaf
senescence remain unclear because of their complexity. However, recent
genetic and reverse-genetic approaches have identified key components
of the regulation of leaf senescence and have revealed glimpses of the
underlying molecular mechanisms."
Here is a list of review articles from an Ovid search, without limits
on date of publication or whether or not the full text is available,
listed for your information:
1. Thomas H. Donnison I. Back from the brink: plant senescence and
its reversibility. [Review] [68 refs] [Journal Article. Review.
Review, Tutorial] Symposia of the Society for Experimental Biology.
2. Houtz RL. Portis AR Jr. The life of ribulose 1,5-bisphosphate
carboxylase/oxygenase--posttranslational facts and mysteries. [Review]
[161 refs] [Journal Article. Review] Archives of Biochemistry &
Biophysics. 414(2):150-8, 2003 Jun 15.
3. Jezek P. Borecky J. Zackova M. Costa AD. Arruda P. Possible basic
and specific functions of plant uncoupling proteins (pUCP). [Review]
[39 refs] [Journal Article. Review. Review, Tutorial] Bioscience
Reports. 21(2):237-45, 2001 Apr.
4. Pandey S. Ranade SA. Nagar PK. Kumar N. Role of polyamines and
ethylene as modulators of plant senescence. [Review] [91 refs]
[Journal Article. Review. Review, Tutorial] Journal of Biosciences.
25(3):291-9, 2000 Sep.
5. Gershon H. Gershon D. Paradigms in aging research: a critical
review and assessment. [Review] [19 refs] [Journal Article. Review.
Review, Tutorial] Mechanisms of Ageing & Development. 117(1-3):21-8,
2000 Aug 15.
6. Bleecker AB. The evolutionary basis of leaf senescence: method to
the madness?. [Review] [19 refs] [Journal Article. Review. Review,
Tutorial] Current Opinion in Plant Biology. 1(1):73-8, 1998 Feb.
7. Thompson JE. Froese CD. Madey E. Smith MD. Hong Y. Lipid
metabolism during plant senescence. [Review] [183 refs] [Journal
Article. Review] Progress in Lipid Research. 37(2-3):119-41, 1998
8. Watanabe A. [Molecular mechanism of plant senescence]. [Review]
[26 refs] [Japanese] [Journal Article. Review] Tanpakushitsu Kakusan
Koso - Protein, Nucleic Acid, Enzyme. 37(7):1347-52, 1992 May.
9. Leshem YY. Plant senescence processes and free radicals. [Review]
[112 refs] [Journal Article. Review] Free Radical Biology & Medicine.
A useful searches through scholar.google.com are
plant senescence review
plant senescence "review article"
Also, if you are planning to use an article for scientific research,
you can often request a reprint of the article from the author
directly. Contact information (e.g. e-mail) is usually given on the
NIH NCBI abstract page. I usually e-mail the author and give multiple
options for responding (fax, snail mail, and e-mail for PDF if
available). You can also use the NIH NCBI document request system for
a fee to obtain copies of articles if you do not have good access to
articles from your library.
I would also check with your library about electronic access to online
journal articles, since this has become the preferred method of
obtaining full text of articles.