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Plant Leaves (2):
Recent article
Plant Leaves
Abstract
Antimicrobial properties of medicinal plants and plant parts such as flowers, roots, fruits, seeds and oils are being used to cure some chronic and acute diseases throughout the world. In the present study, an attempt has been made to isolate and identify the antibacterial compound p...
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PMID: 22013726
PDF is available here.
PDF is available here.
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Abstract
To determine the larvicidal and repellent activities of Coccinia (C) indica Wight and Arnold (Family:Cucurbitaceae) extract against Culex (Cx.) quinquefasciatus, Aedes (Ae.) aegypti and Anopheles (An.) stephensi.
The ovicidal activity was determined against three mosq...
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PMID: 22013723
PDF is available here.
PDF is available here.
Abstract
We show that bedrock comprises a hitherto overlooked source of ecologically available N to forests. We report that the N content of soils and forest foliage on N-rich metasedimentary rocks (350-950 mg N kg(-1)) is elevated by more than 50% compared with similar temperate forest sites underlain...
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PMID: 21886160
PDF is available here.
PDF is available here.
Journal of Proteomics (74)8 2011
Abstract
One of the most prominent hallmarks of the expected climate change in Europe is the higher prevalence of longer and more intense periods of summer drought. To preserve European oak forests, of considerable importance for European economical and ecological development, under these con...
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PMID: 21439417
PDF is available here.
PDF is available here.
Abstract
We test the hypothesis that genetic diversity within host-plant patches translates into consistent and ecologically important changes in the associated herbivore community. More specifically, we use potted, grafted oak saplings to construct 41 patches of four saplings each, with one, two, or four tr...
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PMID: 21905426
PDF is available here.
PDF is available here.
Abstract
We screened Calycolpus moritzianus (O. Berg) Burret leaves extracts by a competitive ELISA-based assay. MeOH and CHCl3 extracts and several their fractions demonstrated to be able to prevent VEGF or PlGF interaction with Flt-1, with an inhibition about 50% at concentration of 100 microg/mL. Phytoche...
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PMID: 21834229
PDF is available here.
PDF is available here.
Abstract
To investigate the larvicidal and ovicidal efficacy of different extracts of Cardiospermum halicacabum L. against Culex quinquefasciatus Say and Aedes aegypti L. (Diptera: Culicidae).
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PMID: 21780548
PDF is available here.
PDF is available here.
Abstract
The phytochemical analysis indicated that total phenolic, flavonoid, and condensed tannin contents in the extract were 45.21 +/- 0.96 mg gallic acid equivalents/g extract, 15.39 +/- 0.58 mg catechin equivalents/g extract, and 4.90 +/- 0.20 catechin equivalents/g extract, respectively. In addition, t...
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PMID: 21780550
PDF is available here.
PDF is available here.
Abstract
The results of the present study justify the use of S. portulacastrum in traditional medicine and the FAME extract can be used as a potential antimicrobial agent against the tested human pathogenic microorganisms....
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PMID: 21780546
PDF is available here.
PDF is available here.
Abstract
Dichlorodiphenyltrichloroethane (DDT) is still used in Africa for the indoor control of malaria and it may represent a potential hazard for wildlife. The littoral sediments of two alkaline-saline lakes, Natron (Tanzania) and Bogoria (Kenya), in the Eastern Rift Valley, supporting lar...
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PMID: 21809777
PDF is available here.
PDF is available here.
Abstract
Artemisinins, the main stay in the treatment of malaria are used in combinations with other antimalarials to forestall resistance, as artemisinin-combination therapies (ACTs). However, ACTs are expensive and some of the non-artemisinin components are not well-tolerated by patients. There are several...
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PMID: 21715732
PDF is available here.
PDF is available here.
Abstract
We refer to as CC(R) domains. Here, we show that CC(R)-NB-LRR-encoding genes are present in the genomes of all higher plants surveyed, and that they comprise two distinct subgroups: one typified by the Nicotiana benthamiana N-required gene 1 (NRG1) protein and the other typified by the Arabidopsis a...
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PMID: 21501087
PDF is available here.
PDF is available here.
Abstract
We use stem-loop real-time reverse transcription-polymerase chain reaction to quantify the expression changes of seven miRNAs and their target mRNAs in different tomato tissues during the pathogenic processes. Compared with mock-inoculated plants, the expression levels of investigated miRNAs and mRN...
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PMID: 21335334
PDF is available here.
PDF is available here.
Abstract
The aqueous and ethanolic extracts of Achyranthes rubrofuca leaves (AR) were studied for their hypoglycemic activity. Thirty animals were taken and they were divided into five groups. First group acts as control, remaining 4 groups were induced diabetics by administering alloxan (120...
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PMID: 21454169
PDF is available here.
PDF is available here.
Cell Host & Microbe (9)3 2011
Abstract
We find that HopZ1 physically interacts with the isoflavone biosynthesis enzyme, 2-hydroxyisoflavanone dehydratase (GmHID1). P. syringae infection induces gmhid1 expression and production of daidzein, a major soybean isoflavone. Silencing gmhid1 increases susceptibility to P. syringae infection, su...
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PMID: 21402357
PDF is available here.
PDF is available here.
Journal of Proteomics (74)3 2011
Abstract
Plant pathogenic fungi cause important yield losses in crops. A proteomic approach was used to study the changes in the leaf proteome profile of the plant Mentha arvensis infected with a necrotrophic fungus, Alternaria alternata. High-resolution two-dimensional gel electrophoresis (2...
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PMID: 21111074
PDF is available here.
PDF is available here.
Pest Management Science (67)3 2011
Abstract
Two-spotted spider mites (Tetranychus urticae Koch) oviposit near leaf veins or in leaf folds on the undersides of cotton (Gossypium hirsutum L.) leaves where the humid boundary layer offers protection from desiccation. The authors predicted that the boundary layer of glabrous cotton...
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PMID: 21308962
PDF is available here.
PDF is available here.
Journal of Proteomics (74)3 2011
Abstract
The role of salicylic acid (SA) in inducing resistance to MYMIV infection in Vigna mungo has been elucidated by proteomics. Twenty-nine proteins identified by MALDI-TOF/TOF, predicted to be involved in stress responses, metabolism, photosynthesis, transport and signal transduction, s...
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PMID: 21130907
PDF is available here.
PDF is available here.
Abstract
We demonstrated here that the edible plant extract of Chrysanthemum coronarium L. (C. coronarium) remarkably activates Type-1 immunity in a Toll-like receptor (TLR)2-, TLR4-, and TLR9-dependent manner. In the present experiments, the extract of C. coronarium significantly induces interferon (IFN)-γ...
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PMID: 21144920
PDF is available here.
PDF is available here.
Proteomics (11)3 2011
Abstract
We undertook a proteomic analysis of N. tabacum trichomes in order to identify their protein complement. Efficient trichome isolation was obtained by abrading frozen leaves. After homogenization, soluble proteins and a microsomal fraction were prepared by centrifugation. Gel-based and gel-free prote...
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PMID: 21268273
PDF is available here.
PDF is available here.
Lipid peroxidation inhibition and antiradical activities of some leaf fractions of Mangifera indica.
Abstract
This study was undertaken to assess in vitro lipid peroxidation inhibitions and anti-radical activities of methanolic, chloroform, ethyl acetate and water fractions of Mangifera indica leaf. Inhibition of Fe(2+)-induced lipid peroxidation (LPO) in egg, brain, and liver homogenates, 1,1-diphenyl-2-pic...
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PMID: 21485698
PDF is available here.
PDF is available here.
Abstract
A resurgence of interest has developed in wild vegetables for their possible medicinal values in diets. Wild plant species provide minerals, fibre, vitamins and essential fatty acids and enhance taste and color in diets. For this reason, the nutritional, phytochemical, antioxidant and antibacterial a...
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PMID: 21485705
PDF is available here.
PDF is available here.
Abstract
The methanol and the aqueous extracts of the plant, Agave sisalana were prepared and evaluated for its phytochemical properties and antimicrobial activities. The phytochemical analysis of the preparation revealed the presence of some secondary metabolites which include: saponins, glycosides, cardiac...
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PMID: 21796935
PDF is available here.
PDF is available here.
Abstract
The leaves of Ficus exasperata Vahl Enum. Pl. vahl (Moraceae) are used by traditional healers in Southern Nigeria and some parts of Africa to avoid preterm births. However, previous reports showed that the plant also exhibited uterine contractions at specific concentrations. This study is therefore a...
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PMID: 21796936
PDF is available here.
PDF is available here.
British Journal of Nutrition (105)1 2011
Abstract
Red meat from grass-fed animals, compared with concentrate-fed animals, contains increased concentrations of long-chain (LC) n-3 PUFA. However, the effects of red meat consumption from grass-fed animals on consumer blood concentrations of LC n-3 PUFA are unknown. The aim of the present study was to...
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PMID: 20807460
PDF is available here.
PDF is available here.
Abstract
We carried out experiments under controlled conditions on young rose plants in order to assess the impact of these indirect interactions on life history traits of three pests: the necrotrophic fungus Botrytis cinerea Pers.: Fr. (Helotiales: Sclerotiniaceae), the aphid Rhodobium porosum Sanderson (He...
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PMID: 21611161
PDF is available here.
PDF is available here.
Abstract
In this chapter, a rapid method to isolate intact chloroplasts from spinach leaves is described. Intact chloroplasts are isolated using two short centrifugation steps and avoiding the use of percoll gradient. Intactness of chloroplast is evaluated by the inability of potassium ferricyanide to enter...
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PMID: 20960139
PDF is available here.
PDF is available here.
Abstract
We describe how to extract and quantify Rubisco activase content in leaf....
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PMID: 20960145
PDF is available here.
PDF is available here.
Abstract
Rubisco activase is a molecular chaperone that modulates the activation state of Rubisco by catalyzing the ATP-dependent removal of tightly-bound inhibitory sugar-phosphates from Rubisco's catalytic sites. This chapter reports methods developed for the purification of native and recombinant Rubisco...
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PMID: 20960143
PDF is available here.
PDF is available here.
Abstract
Ribulose-1,5-bisphosphate (RuBP) carboxylase/oxygenase (Rubisco) activase functions as a mechano-chemical motor protein using the energy from ATP hydrolysis to contort the structure of its target protein, Rubisco. This action modulates the activation state of Rubisco by removing tightly-bound inhibi...
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PMID: 20960144
PDF is available here.
PDF is available here.
Abstract
We describe the methods for assaying photoinhibition and heat inhibition of photosystem II in higher plant materials....
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PMID: 20960132
PDF is available here.
PDF is available here.
Abstract
We have developed procedures for mechanical disruption of leaf tissues in order to isolate metabolically active bundle sheath strand cells and thylakoids practically free from cross-contamination coming from mesophyll cells. The procedures are described in detail together with useful practical sugge...
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PMID: 20960140
PDF is available here.
PDF is available here.
Abstract
Ribulose-1,5-bisphosphate carboxylase/oxygenase (Rubisco) is a multifunctional enzyme that catalyzes the fixation of CO2 and O2 in photosynthesis and photorespiration, respectively. As the rate-limiting step in photosynthesis, improving the catalytic properties of Rubisco has long been viewed as a v...
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PMID: 20960141
PDF is available here.
PDF is available here.
Abstract
Plastocyanin and cytochrome c6 are widely distributed over the oxygen-evolving photosynthetic organisms. The two proteins are functionally equivalent, but strongly differ in their global electrostatic charge. In fact, they are acidic in eukaryotes, but either neutral or basic in cyanobacteria. Such...
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PMID: 20960123
PDF is available here.
PDF is available here.
Abstract
We describe techniques for measuring the amount and activity of Rubisco in higher plants. To accommodate a range of experimental capabilities, we describe basic radioisotopic methods as well as non-radioactive techniques. The required calculations are included. We discuss problems that commonly aris...
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PMID: 20960142
PDF is available here.
PDF is available here.
Abstract
Ligustrum morrisonense Kaneh and Sasaki (abbreviated as LM), an endemic Ligustrum plant in Taiwan, is similar to Ligustrum lucidum, which is usually used for curing hepatic and inflammatory disorders. The aim of this study was to evaluate the analgesic and anti-inflammatory properties of LM by chemic...
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PMID: 21476210
PDF is available here.
PDF is available here.
Rheumatology International (100)3 2010
Abstract
I and PS II fluorescence were calculated using a model that considers PS I fluorescence to be constant but variable PS II fluorescence. The photosystem spectra suggest that LHC II absorption results in high values of F(V)/F(M) between 470 and 490 nm in the two wild-type leaves but the absence of LHC...
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PMID: 19544007
PDF is available here.
PDF is available here.
Abstract
To assess the cytotoxic activities of crude extracts and solvent fractions of Spermacoce verticillata, Ficus pumila and Flemingia strobilifera against a MT-4 human leukaemia cancer cell line.
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PMID: 21702230
PDF is available here.
PDF is available here.
British Journal of Nutrition (104)12 2010
Chronic administration of Eucommia leaf stimulates metabolic function of rats across several organs.
Abstract
We used a metabolic syndrome-like rat model, produced by feeding a 35% high-fat diet (HFD), to examine potential anti-obesity and anti-metabolic syndrome effects and mechanisms of chronic administration of Eucommia leaf as an extract or green leaf powder. Eighty rats were studied for 3 months in ten...
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PMID: 20691136
PDF is available here.
PDF is available here.
Abstract
Specific visible foliar injuries were demonstrated to occur on plants of Viburnum lantana L. (wayfaring tree) when exposed to ozone in open-top chamber experiments. However, although evidence of visible injury was reported even for native plants, no comprehensive testing has been carried out under r...
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PMID: 20877876
PDF is available here.
PDF is available here.
Abstract
Salt cress (Thellungiella salsuginea also known as T. halophila) is a wild cruciferous extremophile highly resistant to salt, drought, and cold. The recent discovery that salt cress produces the phytoalexins wasalexins A and B, and the phytoanticipins 1-methoxyglucobrassicin and 4-methoxyglucobrassi...
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PMID: 20848032
PDF is available here.
PDF is available here.
Abstract
These results will provide not only useful information for map-based cloning of Ptl1 in Capsicum but also the starting points for analysis of R-gene cluster inked with Ptl1....
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PMID: 20033390
PDF is available here.
PDF is available here.
Abstract
Field experiments were conducted to evaluate the effect of fly ash on growth and yield of three locally grown cultivars of an important leguminous plant mung bean (Vigna radiata L.) on soil amended with different concentrations of fly ash. The values of pH, EC, WHC, soil cations, total heavy metals...
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PMID: 20696477
PDF is available here.
PDF is available here.
Abstract
Heavy metal content in soil and the most abundant indigenous plant species (Artemisia sieberi) in Sarcheshmeh area is investigated. Sequential extraction analysis is carried out and phytoavailable fractions of selected heavy metals are also determined. The results show that heavy metals in the study...
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PMID: 21069278
PDF is available here.
PDF is available here.
British Journal of Nutrition (104)9 2010
Abstract
We have investigated the in vitro and in vivo effects of watercress, which is a rich source of PEITC. We first demonstrated that, similar to PEITC, crude watercress extracts inhibited cancer cell growth and HIF activity in vitro. To examine the effects of dietary intake of watercress, we obtained pl...
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PMID: 20546646
PDF is available here.
PDF is available here.
Abstract
We quantified the extent to which these attributes affect leaf trait values at a given resource supply level, using measured plant traits from 105 different species (254 observations) distributed across 50 sites in mesic to wet plant communities in The Netherlands. For each site, soil total N, soil...
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PMID: 21141183
PDF is available here.
PDF is available here.
Molecular Plant (3)6 2010
Abstract
There is increasing evidence that pathogens do not only elicit direct defense responses, but also cause pronounced changes in primary carbohydrate metabolism. Cell-wall-bound invertases belong to the key regulators of carbohydrate partitioning and source-sink relations. Whereas studi...
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PMID: 20833735
PDF is available here.
PDF is available here.
Abstract
The essential oils from stems, leaves, inflorescences, and both unripe and ripe infructescences of Smyrnium olusatrum L. (Umbelliferae) collected in Greece were obtained by hydrodistillation and analyzed by GC-FID and GC-MS. Fifty-eight components were identified. Among the samples analyzed, the dif...
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PMID: 21213987
PDF is available here.
PDF is available here.
Abstract
The essential oil from aerial parts (stems and leaves) of Atriplex undulata (Moq) D. Dietr. (Chenopodiaceae) has been studied for its in vitro antioxidant activity. The chemical composition of the oil obtained by hydrodistillation was determined by GC and GC-MS. The major constituents were p-acetani...
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PMID: 21213996
PDF is available here.
PDF is available here.
Abstract
The hydrodistilled essential oils of the leaves and twigs of Litsea mushaensis and L. linii were analyzed. Sixty-nine and ninety compounds were identified in the leaf and twig oils, respectively, of L. mushaensis. The main components of the leaf oil were beta-eudesmol (24.2%), tau-cadinol (10.2%), a...
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PMID: 21213991
PDF is available here.
PDF is available here.
Abstract
The chemical composition of the volatile compounds from the leaves of Galinsoga parviflora Cav. (Asteraceae) from Colombia was studied by GC and GC/MS. Eighty-eight volatile compounds were identified, of which the major ones were (Z)-3-hexen-1-ol (21.7%), beta-caryophyllene (12.4%), and 6-demethoxy-...
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PMID: 21213993
PDF is available here.
PDF is available here.
Abstract
Our results show that tomato plants acclimatize during long-term exposure to 20 μM Cd. On the contrary, 100μM Cd treatment results in drastic physiological and metabolic perturbations leading to plant growth limitation and fruit set abortion.
Copyright © 2010 Elsevier Inc. All rights reserved....
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PMID: 20846723
PDF is available here.
PDF is available here.
Journal of Antibiotics (63)11 2010
Abstract
We show that attachment of a C8 alkyl chain to ring III of a neamine-based aminoglycoside specifically at the 4″-o position yields a broad-spectrum fungicide (FG08) without the antibacterial properties typical for aminoglycosides. Leaf infection assays and greenhouse studies show that FG08 is capa...
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PMID: 20924381
PDF is available here.
PDF is available here.
Abstract
We present here a PCR-based method that allows a priori determination of the degree of chloroplast and mitochondrial contamination in DNA samples from plant environments. It is based on differential digestibility of chloroplast, mitochondrial and bacterial small subunit rRNA gene amplicons with the...
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PMID: 20816905
PDF is available here.
PDF is available here.
Journal of Plant Physiology (167)16 2010
Abstract
We propose protein networks of carbon metabolism at the protein level during leaf senescence. These networks illustrate, for the first time, an overview of the regulations of carbon metabolic reactions occurring during leaf senescence.
Copyright © 2010 Elsevier GmbH. All rights reserved....
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PMID: 20663584
PDF is available here.
PDF is available here.
Abstract
We show that the replication-associated proteins (Rep: a rolling-circle replication initiator protein) encoded by these alphasatellites interact with the Rep and C4 proteins encoded by their helper begomovirus, Cotton leaf curl Rajasthan virus (CLCuRaV), in a yeast two-hybrid assay. Both the alphasa...
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PMID: 20598726
PDF is available here.
PDF is available here.
Abstract
The transcriptome profile in leaves and roots of the transgenic cotton line T-34 expressing hpa1(Xoo) from Xanthomonas oryzae pv. oryzae was analysed using a customized 12k cotton cDNA microarray. A total of 530 cDNA transcripts involved in 34 pathways were differentially expressed in the transgenic...
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PMID: 20667962
PDF is available here.
PDF is available here.
Abstract
Lincomycin-treated pumpkin leaves were illuminated with either continuous light or saturating single-turnover xenon flashes to study the dependence of photoinactivation of photosystem II (PSII) on the mode of delivery of light. The flash energy and the time interval between the flashes were varied b...
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PMID: 20643811
PDF is available here.
PDF is available here.
Abstract
These results suggest that the BR-induced initial apoplastic H(2)O(2) production activates ZmMPK5, which is involved in self-propagation of apoplastic H(2)O(2) via regulation of NADPH oxidase gene expression in BR-induced antioxidant defence systems....
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PMID: 20693409
PDF is available here.
PDF is available here.
Abstract
Two new acylated flavonoid glycosides have been isolated from the leaves of Quercus dentata Thunb. On the basis of chemical and spectral data, the structures of the compounds have been elucidated as kaempferol 3-O-(2", 4"-diacetyl-3"-cis-p-coumaroyl-6"-trans-p-coumaroyl)-beta-D-glucopyranoside (1),...
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PMID: 21121256
PDF is available here.
PDF is available here.