Showing papers in "Journal of Plant Physiology in 2009"

TL;DR: Osmotic stress caused by NaCl supply reduced stem diameter, number of shoots, shoot length and nutrients in olive plants, but AMF colonization alleviated all of these negative effects on growth and survival and enhanced salt tolerance in terms of olive growth and nutrient acquisition.

TL;DR: The results show that 0.1microM melatonin has a stimulatory effect on root growth, while 100microM is inhibitory, and older seedlings appear to be less susceptible to both the stimulatory and the inhibitory effect of melatonin.

TL;DR: The present study suggests that proline and betaine confer tolerance to Cd stress in tobacco BY-2 cells by different mechanisms.

TL;DR: Although different species of AM can be very beneficial to wheat plants under salinity stress, it is obvious from the results of this research that Glomus etunicatum can perform more efficiently under such conditions compared with other AM species.

TL;DR: It is concluded that both proline and betaine provide a protection against NaCl-induced cell death via decreasing level of ROS accumulation and lipid peroxidation as well as improvement of membrane integrity.

TL;DR: Results suggest that activation of secondary metabolism as well as the antioxidative metabolism is an integral part of plant adaptation to normal growing conditions in lettuce plants.

TL;DR: This review will summarize the molecular identities of known K(+) transporters, and examine how this information supports physiological investigations of K(+ transport and studies of plant stress responses in a changing environment.

TL;DR: The results indicate that H( 2)O(2) might be involved in signal transduction events, leading to proline accumulation in maize seedlings, and that the H(1)-pyrroline-5-carboxylate synthetase gene expression up-regulation is a combined result of the sequential activation of the glutamate and ornithine pathways of proline biosynthesis.

TL;DR: It is concluded that PpNCED1 and VV NCED1 initiate ABA biosynthesis at the beginning of fruit ripening, and that ABA accumulation might play a key role in the regulation of ripeness and senescence of both peach and grape fruits.

TL;DR: The results indicate the significance of soil biological activities, including the activities of plant growth-promoting bacteria, in the alleviation of soil stresses such as salinity on plant growth.

TL;DR: Two-dimensional gel electrophoresis coupled with mass spectrometry has been adopted to investigate the protein expression patterns of rice roots in response to chilling stress, and a group of novel proteins were identified.

TL;DR: The application of 10(-4)M, but not 10(-7)M SA, led to prolonged ABA accumulation and to enhanced activity of aldehyde oxidase (AO1, EC.2.3.1.), an enzyme responsible for the conversion of ABA-aldehyde to ABA, both in root and leaf tissues.

TL;DR: It is reported that high salt exposure suppresses lateral root initiation and organogenesis, resulting in the abortion of lateral root development, and auxin transport activities are required for remodeling lateral root formation and elongation and for adaptive root system development under salt stress.

TL;DR: Although salt-induced oxidative stress occurred in all pea cultivars, the response of salt-tolerant and salt-sensitive cultivars with respect to the generation of enzymatic and non-enzymatic metabolites measured was not consistent.

TL;DR: Citrumelo CPB4475, a moderate flood-tolerant genotype, was subjected to three different periods of soil flooding followed by drainage, and coordinated antioxidant activity, involving increased activities of superoxide dismutase (SOD) and catalase (CAT) allowed plants to cope with flooding-induced oxidative stress up to a certain point.

TL;DR: The five functional FAR enzymes yielded distinctly different compositions of fatty alcohols when expressed in E. coli, indicating that the different enzymes may be involved in the production of different types of alcohols in plant cells.

TL;DR: Non-destructive measurements of both reflectance and area of a single leaf (either collar or ear) can be used to accurately estimate total Chl content in a maize canopy.

TL;DR: The results show a specific Cd-related induction of NADPH oxidases, whereas both metals induced lipid peroxidation via the activation of lipoxygenases, as well as specific multipollution effects, which were compared with the mechanisms induced when the plants are exposed to both metals simultaneously.

TL;DR: SA pretreatment elevated enzymatic and non-enzymatic antioxidants, and the concentrations of GSH and NPT in roots and shoots, hence leading to alleviation of the oxidative damage as indicated by the lowered H( 2)O(2) and MDA levels.

TL;DR: All nine OsHSP genes were induced strongly by heat shock treatment, whereas none of them were induced by cold, implying that the nine OshSP genes may play different roles in plant development and abiotic stress responses.

TL;DR: Overexpression of OrbHLH2 in Arabidopsis conferred increased tolerance to salt and osmotic stress, and the stress-responsive genes DREB1A/CBF3, RD29A, COR15A and KIN1 were upregulated in transgenic plants, which implies that Orb HLH2 does not depend on ABA in responding to salt stress.

TL;DR: Results provide strong evidence that H( 2)O(2) and ()NO elicit long-lasting systemic primer-like antioxidant activity in citrus plants under physiological and NaCl-stress conditions.

TL;DR: A model was developed to describe the potential regulatory networks mediated by the UV-B-responsive miRNAs in P. tremula and its results provide new insights into the understanding of miRNAAs as ubiquitous regulators in plant response toUV-B and other stresses.

TL;DR: The results suggest that the availability of sufficient sugar reserve in the roots, activity of SS to provide reducing sugars for glycolytic activity and ADH for the recycling of NADH, and for the continuation of Glycolysis could be one of the important mechanisms of waterlogging tolerance of V. luteola.

TL;DR: It is proposed that these contrasting Brassica cultivars can serve as suitable dicot crop models for elucidating stress-relevant genetic determinants in genome-level analysis.

TL;DR: In both species, biomass production decreased considerably when the two constraints were applied simultaneously, and H. maritimum showed limitation in CO2 photoassimilation, but this species displayed mechanisms that play a role in avoiding PSII photodamage aimed to dissipate the excess energy.

TL;DR: Upregulation of the message for the antimicrobial PDF1.2 protein in drought-stressed insertion lines indicated that MDAR2 and DHAR5 are crucial for producing sufficient ascorbate to maintain the interaction between Piriformospora indica and Arabidopsis in a mutualistic state.

TL;DR: Results suggest that Cd uptake and translocation is an active process in plants of HE S. alfredii, symplastic pathway rather than apoplastic bypass contributes greatly to root uptake, xylem loading and translocated of Cd to the shoots of HE, in comparison with the NHE plants.

TL;DR: The hypothesis that the extent of activation of different metabolic pathways, including carbon fixation via PEPC, organic acid synthesis-related enzymes and oxygen consumption is different among species, and this could modulate the different levels of efficiency in Strategy I plants is supported.

TL;DR: The results support the existence of a Spm-signaling pathway in Arabidopsis thaliana and its significant role in defense against CMV.