Showing papers in "Plant Physiology and Biochemistry in 1998"

TL;DR: The hypothesis that endogenously-produced nitric oxide (NO • ) gas is a natural plant growth regulator was experimentally tested in this paper, where a wide spectrum of both climacteric and non-climacteric varieties of fruits, flowers, vegetables and legume sprout species were investigated.

TL;DR: It is evident that cell membrane protection under salinity stress can be provided by GB or Pro thus leading to increased salt tolerance in plants.

TL;DR: Aqueous solutions of SA, applied as a spray to the shoots of soybean ( Glycine max (L.) Merr. cv. Cajeme), significantly increased the growth of shoots and roots as measured after seven days of treatment as mentioned in this paper.

TL;DR: The various mutants used to analyse the role of ABA in seed development and seed germination, stress tolerance, and stomatal closure use mutants affected in either the biosynthesis or the mode of action of this hormone.

TL;DR: Analysis of the profile of anionic isoenzymes of guaiacol peroxidase revealed quantitative changes occurring during Ni-exposure to nickel-induced oxidative stress and potential antioxidant reactions.

TL;DR: This review focuses on flavonoid metabolism in Arabidopsis, a particularly relevant pathway for such analysis because it is so highly conserved in plants.

TL;DR: In this review, recent research on leaf development in Arabidopsis is summarized, with the finding that the study of leaf development seems to be about to come of age.

TL;DR: Significant evidence from studies on Arabidopsis implicates ubiquitin-mediated regulation of the cell cycle as important in auxin response, and much remains to be done to clarify the mechanism of auxin action, auxin transport, and the roles of Auxin in plant physiology.

TL;DR: The results suggest that during chilling and post-chilling periods, temporal variations in phospholipase D and lipoxygenase activities in both leaves and roots of CO 316, CO 316P and CO 328 could result in differential metabolism ofospholipids.

TL;DR: A compilation of all available data indicates that all Arabidopsis organs constitutively express one, and most of them two or more, plant defensin genes.

TL;DR: This review points out the different mechanisms by which oxygen activation takes place: photodynamic formation of singlet oxygen as well as reductive activation of oxygen via photosynthetic electron transport, diaphorases, cytochrome P 450 and dithiols.

TL;DR: GAFP-1 could be a lectin-like protein with strong inhibitory activity against certain fungal pathogens, and was found to share high homology with those of other lectins from orchids such as Listera ovata and Epipactis helleborine.

TL;DR: The results showed clearly that the floral stem growth was under the control of an endogenous circadian Rhythm of Arabidopsis thaliana, Landsberg erecta ecotype.

TL;DR: Flowers of the daylily provide an excellent system for the study of events related to cell death, and possible roles for wall-based enzyme activity in ageing of dayl Lily petals are presented.

TL;DR: Progress in GA biosynthesis and action in Arabidopsis is reviewed, with particular emphasis on very recent work.

TL;DR: Comparison of the sequence of transport rates observed with mineral and organic anions on fruit or cultured cell tonoplast vesicles suggested that the fruit vacuole was more specialized in the transport of organic anion than the cultured cells.

TL;DR: Determination of kinetic parameters showed that the native enzyme has a strong affinity for the substrate (strictosidine, K m ≤ 20 μM), and Digestion of the protein by trypsin resulted in disintegration of the complex, solubilising the enzyme without loss of activity.

TL;DR: The effect of gibberellic acid on grape growth, β-fructofuranosidase (EC 3.26) activity and carbohydrate levels was investigated throughout berry development and ripening as mentioned in this paper.

TL;DR: This review summarizes the current knowledge of the mechanisms of cell cycle control in the model plant Arabidopsis thaliana and describes the mechanisms that drive progression through G1, S, G2, and M phases.

TL;DR: The amount of ACBP was not, however, strongly correlated with rates of lipid biosynthesis during embryo development nor with lipid degradation during seedling germination, but the addition of rACBP stimulated microsomal glycerol-3-phosphate acyl-transferase (GPAT) activity in in vitro assays, but concentrations in excess of a 1:1 ratio of AC BP:oleoyl-CoA caused decreases in GPAT activity.

TL;DR: In abil and abi2 mutant plants, total impairment in the response to ABA is accompanied by a limited inhibition in stomata1 response to CO, and light, which does not support a total convergence of ABA and CO, signalling pathways in guard cells.

TL;DR: The use of several simple traits based on the structure and stable isotope composition of seedling leaves to assess differences in early vigour, phenology and grain yield, and also the interaction with low temperatures in barley suggests that within the genotypes resistant to low temperatures, those with higher chlorophyll content assimilate more nitrogen from nitrate.

TL;DR: Results show that waxes are not always the main barrier to the penetration of chemicals through plant cuticles, and that it is necessary to consider the complete picture of cuticle organization with the polymer matrix and waxes.

TL;DR: In this review, the different ethylene-related mutations and their gene products are considered in detail, and possible models of the manner in which the pathway functions are proposed.

TL;DR: The results indicate that the alterations in phenylpropanoid metabolism in sessile oak somatic embryos are closely related to their developmental capability.

TL;DR: Experimental manipulations have uncovered the existence of positional cues important for pattern formation in the root of Arabidopsis and contribute to a better understanding of developmental processes at the cellular level.

TL;DR: The possible involvement of DRP in avoiding DHA accumulation under adverse environmental conditions is discussed, and the increase in DRP activity seems to be due to de novo protein synthesis.

TL;DR: It was concluded that the pigment bleaching reported for tomato lipoxygenase does not result from release of intermediate free radicals to initiate the process of carbonyl formation.

TL;DR: These data are the first to show annexins localized in plant cell nuclei where they may play a role in nuclear function.

TL;DR: The recent identification of Arabidopsis genes involved in the synthesis of cell wall precursors, and the discovery of plant homologs to bacterial cellulose synthases offer numerous and exciting possibilities for the genetic dissection ofcell wall synthesis in higher plants usingArabidopsis thaliana as a model system.