Annual Reviews
1040-2519
Cơ quản chủ quản: N/A
Các bài báo tiêu biểu
ASCORBATE AND GLUTATHIONE: Keeping Active Oxygen Under Control
Tập 49 Số 1 - Trang 249-279 - 1998
▪ Abstract To cope with environmental fluctuations and to prevent invasion by
pathogens, plant metabolism must be flexible and dynamic. Active oxygen species,
whose formation is accelerated under stress conditions, must be rapidly
processed if oxidative damage is to be averted. The lifetime of active oxygen
species within the cellular environment is determined by the antioxidative
system, which p...
THE WATER-WATER CYCLE IN CHLOROPLASTS: Scavenging of Active Oxygens and Dissipation of Excess Photons
Tập 50 Số 1 - Trang 601-639 - 1999
▪ Abstract Photoreduction of dioxygen in photosystem I (PSI) of chloroplasts
generates superoxide radicals as the primary product. In intact chloroplasts,
the superoxide and the hydrogen peroxide produced via the disproportionation of
superoxide are so rapidly scavenged at the site of their generation that the
active oxygens do not inactivate the PSI complex, the stromal enzymes, or the
scavengin...
PLANT COLD ACCLIMATION: Freezing Tolerance Genes and Regulatory Mechanisms
Tập 50 Số 1 - Trang 571-599 - 1999
▪ Abstract Many plants increase in freezing tolerance upon exposure to low
nonfreezing temperatures, a phenomenon known as cold acclimation. In this
review, recent advances in determining the nature and function of genes with
roles in freezing tolerance and the mechanisms involved in low temperature gene
regulation and signal transduction are described. One of the important
conclusions to emerge ...
THE OXIDATIVE BURST IN PLANT DISEASE RESISTANCE
Tập 48 Số 1 - Trang 251-275 - 1997
▪ Abstract Rapid generation of superoxide and accumulation of H2O2 is a
characteristic early feature of the hypersensitive response following perception
of pathogen avirulence signals. Emerging data indicate that the oxidative burst
reflects activation of a membrane-bound NADPH oxidase closely resembling that
operating in activated neutrophils. The oxidants are not only direct protective
agents, ...
PHYTOREMEDIATION
Tập 49 Số 1 - Trang 643-668 - 1998
▪ Abstract Contaminated soils and waters pose a major environmental and human
health problem, which may be partially solved by the emerging phytoremediation
technology. This cost-effective plant-based approach to remediation takes
advantage of the remarkable ability of plants to concentrate elements and
compounds from the environment and to metabolize various molecules in their
tissues. Toxic hea...
REGULATION OF LIGHT HARVESTING IN GREEN PLANTS
Tập 47 Số 1 - Trang 655-684 - 1996
▪ Abstract When plants are exposed to light intensities in excess of those that
can be utilized in photosynthetic electron transport, nonphotochemical
dissipation of excitation energy is induced as a mechanism for photoprotection
of photosystem II. The features of this process are reviewed, particularly with
respect to the molecular mechanisms involved. It is shown how the dynamic
properties of t...
BIOSYNTHESIS AND ACTION OF JASMONATES IN PLANTS
Tập 48 Số 1 - Trang 355-381 - 1997
▪ Abstract Jasmonic acid and its derivatives can modulate aspects of fruit
ripening, production of viable pollen, root growth, tendril coiling, and plant
resistance to insects and pathogens. Jasmonate activates genes involved in
pathogen and insect resistance, and genes encoding vegetative storage proteins,
but represses genes encoding proteins involved in photosynthesis. Jasmonic acid
is derived...