Giant cacti: isotopic recorders of climate variation in warm deserts of the Americas.

abstract：:Hydroponically grown spinach plants were deprived of an external source of sulphate after an initial period when the S-supply was sufficient. The time-course of events following this treatment was monitored. The first responses were found in the uptake and translocation of NO(3)(-) and the uptake of SO(4)(2-). The for...

journal_title：Journal of experimental botany

authors： Prosser IM,Purves JV,Saker LR,Clarkson DT

更新日期：2001-01-01 00:00:00

abstract：:In Arabidopsis thaliana, Argonaute1 (AGO1) interacts with miR168 to modulate the small RNA regulatory pathway. However, the underlying mechanism of regulation and relationship between AGO1 and miR168 is poorly understood in the cash crop Solanum lycopersicum (tomato). We previously found that SlAGO1A and SlAGO1B were ...

journal_title：Journal of experimental botany

authors： Xian Z,Huang W,Yang Y,Tang N,Zhang C,Ren M,Li Z

更新日期：2014-12-01 00:00:00

abstract：:The composition of carotenoids, along with anthocyanins and chlorophyll, accounts for the distinctive range of colour found in the Actinidia (kiwifruit) species. Lutein and beta-carotene are the most abundant carotenoids found during fruit development, with beta-carotene concentration increasing rapidly during fruit m...

journal_title：Journal of experimental botany

authors： Ampomah-Dwamena C,McGhie T,Wibisono R,Montefiori M,Hellens RP,Allan AC

更新日期：2009-01-01 00:00:00

abstract：:Leaf senescence involves degenerative but active biological processes that require balanced regulation of pro- and anti-senescing activities. Ethylene and cytokinin are major antagonistic regulatory hormones that control the timing and progression rate of leaf senescence. To identify the roles of these hormones in the...

journal_title：Journal of experimental botany

authors： Kim J,Park SJ,Lee IH,Chu H,Penfold CA,Kim JH,Buchanan-Wollaston V,Nam HG,Woo HR,Lim PO

更新日期：2018-05-25 00:00:00

abstract：:Dihydroflavonol 4-reductase (DFR) is the first committed enzyme of the anthocyanin and condensed tannin pathways. Several DFR cDNAs have been cloned, and different specificities of DFR isozymes in the substrate hydroxylation patterns have been reported, but only fragmentary knowledge of DFR gene organization is availa...

journal_title：Journal of experimental botany

authors： Shimada N,Sasaki R,Sato S,Kaneko T,Tabata S,Aoki T,Ayabe S

更新日期：2005-09-01 00:00:00

abstract：:Plants are sessile organisms forced to adjust to their surrounding environment. In a single plant the photoautotrophic shoot is exposed to pronounced environmental variations recurring in a day-night 24 h (diel) cycle, whereas the heterotrophic root grows in a temporally less fluctuating environment. The contrasting h...

journal_title：Journal of experimental botany

authors： Ruts T,Matsubara S,Wiese-Klinkenberg A,Walter A

更新日期：2012-05-01 00:00:00

abstract：:Recent years have witnessed a breathtaking increase in the availability of genome sequence data, providing evidence of the highly duplicate nature of eukaryotic genomes. Plants are exceptional among eukaryotic organisms in that duplicate loci compose a large fraction of their genomes, partly because of the frequent oc...

journal_title：Journal of experimental botany

authors： Charon C,Bruggeman Q,Thareau V,Henry Y

更新日期：2012-09-01 00:00:00

abstract：:Extracellularly secreted peroxidases in cell suspension culture of tobacco (Nicotiana tabacum L. cv. Bright Yellow-2, cell line BY-2) catalyse the salicylic acid (SA)-dependent formation of active oxygen species (AOS) which, in turn, triggers an increase in cytosolic Ca2+ concentration. Addition of horseradish peroxid...

journal_title：Journal of experimental botany

authors： Kawano T,Muto S

更新日期：2000-04-01 00:00:00

abstract：:Cortical microtubules (CMTs) are often aligned in a particular direction in individual cells or even in groups of cells and play a central role in the definition of growth anisotropy. How the CMTs themselves are aligned is not well known, but two hypotheses have been proposed. According to the first hypothesis, CMTs a...

journal_title：Journal of experimental botany

authors： Burian A,Ludynia M,Uyttewaal M,Traas J,Boudaoud A,Hamant O,Kwiatkowska D

更新日期：2013-12-01 00:00:00

abstract：:Recent studies have suggested that aluminium (Al) induces programmed cell death (PCD) in plants. To investigate possible mechanisms, fluorescence techniques were used to monitor the behaviour of mitochondria in vivo, as well as the activation of caspase-3-like activity during protoplast PCD induced by Al. A quick burs...

journal_title：Journal of experimental botany

authors： Li Z,Xing D

更新日期：2011-01-01 00:00:00

abstract：:Endomembrane traffic in eukaryotic cells functions partially as a means of communication; delivery of membrane in one direction has to be balanced with a reduction at the other end. This effect is typically the case during the defence against pathogens. To combat pathogens, cellular growth and differentiation are supp...

journal_title：Journal of experimental botany

authors： Pecenková T,Markovic V,Sabol P,Kulich I,Žárský V

更新日期：2017-12-18 00:00:00

abstract：:BRCA2 is a breast tumour susceptibility factor with functions in maintaining genome stability through ensuring efficient double-strand DNA break (DSB) repair via homologous recombination. Although best known in vertebrates, fungi, and higher plants also possess BRCA2-like genes. To investigate the role of Arabidopsis ...

journal_title：Journal of experimental botany

authors： Abe K,Osakabe K,Ishikawa Y,Tagiri A,Yamanouchi H,Takyuu T,Yoshioka T,Ito T,Kobayashi M,Shinozaki K,Ichikawa H,Toki S

更新日期：2009-01-01 00:00:00

abstract：:CO(2) faces a series of resistances while diffusing between the substomatal cavities and the sites of carboxylation within chloroplasts. The absence of techniques to measure the resistance of individual steps makes it difficult to define their relative importance. Resistance to diffusion through intercellular airspace...

journal_title：Journal of experimental botany

authors： Evans JR,Kaldenhoff R,Genty B,Terashima I

更新日期：2009-01-01 00:00:00

abstract：:The response of stomata to many environmental factors is well documented. Multiple signalling pathways for abscisic acid (ABA)-induced stomatal closure have been proposed over the last decades. However, it seems that exposure of a leaf for a long time (several days) to some environmental conditions generates a sort of...

journal_title：Journal of experimental botany

authors： Aliniaeifard S,van Meeteren U

更新日期：2013-09-01 00:00:00

abstract：:Grain number per spike, which is greatly influenced by floret fertility, is an important trait of wheat (Triticum aestivum L.) yield. Maximum floret primordia, fertile floret, and final grain number per spikelet are three crucial factors of floret fertility. Floral degradation plays a critical role in determining thes...

journal_title：Journal of experimental botany

authors： Guo Z,Schnurbusch T

更新日期：2015-09-01 00:00:00

abstract：:SU(VAR)3-9 proteins are key regulators of heterochromatin structure and function in plants, mammals, Drosophila, and yeast. In contrast to animals and fungi, plants contain numerous Su(var)3-9 homologues (SUVH), the members of which form a discrete subfamily. The SU(VAR)3-9 and SUVH proteins associate with heterochrom...

journal_title：Journal of experimental botany

authors： Casas-Mollano JA,Lao NT,Kavanagh TA

更新日期：2006-01-01 00:00:00

abstract：:Our understanding of within-species annual plant adaptation to rainfall gradients is fragmented. Broad-scale ecological applications of Grime's C-S-R triangle are often superficial, while detailed drought physiology tends to be narrow, focusing on elite cultivars. The former lack the detail to explain how plants respo...

journal_title：Journal of experimental botany

authors： Berger JD,Ludwig C

更新日期：2014-11-01 00:00:00

abstract：:Transgenic tobacco (Nicotiana tabacum cv. LA Burley 21) lines expressing three genes encoding enzymes thought to be critical for the efficient production of phytochelatins, (i) serine acetyltransferase (EC 2.3.1.30) involved in the production of O-acetylserine, the cysteine precursor, (ii) gamma-glutamylcysteine synth...

journal_title：Journal of experimental botany

authors： Wawrzynski A,Kopera E,Wawrzynska A,Kaminska J,Bal W,Sirko A

更新日期：2006-01-01 00:00:00

abstract：:The control of sugar beet (Beta vulgaris L.) germination by plant hormones was studied by comparing fruits and seeds. Treatment of sugar beet fruits and seeds with gibberellins, brassinosteroids, auxins, cytokinins, and jasmonates or corresponding hormone biosynthesis inhibitors did not appreciably affect radicle emer...

journal_title：Journal of experimental botany

authors： Hermann K,Meinhard J,Dobrev P,Linkies A,Pesek B,Hess B,Machácková I,Fischer U,Leubner-Metzger G

更新日期：2007-01-01 00:00:00

abstract：:The kinetics of leaf vein recovery from cavitation-induced embolism was studied in plants of sunflower cv. Margot, together with the impact of vein embolism on the overall leaf hydraulic conductance (Kleaf). During the air-dehydration of leaves to leaf water potentials (Psi L) of -1.25 MPa, Kleaf was found to decrease...

journal_title：Journal of experimental botany

authors： Trifilò P,Gascó A,Raimondo F,Nardini A,Salleo S

更新日期：2003-10-01 00:00:00

abstract：:Endosperm cap (CAP) weakening and embryo elongation growth are prerequisites for the completion of lettuce seed germination. Although it has been proposed that the cell wall loosening underlying these processes results from an enzymatic mechanism, it is still unclear which enzymes are involved. Here it is shown that r...

journal_title：Journal of experimental botany

authors： Zhang Y,Chen B,Xu Z,Shi Z,Chen S,Huang X,Chen J,Wang X

更新日期：2014-07-01 00:00:00

abstract：:Drought escape and dehydration avoidance represent alternative strategies for drought adaptation in annual crops. The mechanisms underlying these two strategies are reported to have a negative correlation, suggesting a trade-off. We conducted a quantitative trait locus (QTL) analysis of flowering time and root mass, t...

journal_title：Journal of experimental botany

authors： Fletcher RS,Mullen JL,Heiliger A,McKay JK

更新日期：2015-01-01 00:00:00

abstract：:The expression and activity of glutamine synthetase (GS, EC 6.3.1.2) were examined in relation to the rate of CO2 assimilation in sunflower (Helianthus annuus L.) leaves. Intact plants were kept in the dark for 72 h and subsequently exposed to light under different atmospheric CO2 concentrations (100, 400 and 1200 mic...

journal_title：Journal of experimental botany

authors： Larios B,Aguera E,Cabello P,Maldonado JM,de la Haba P

更新日期：2004-01-01 00:00:00

abstract：:Plants as photoautotrophic organisms are able to produce the carbohydrates they require and have developed mechanisms to co-ordinate carbohydrate production and its metabolism. Carbohydrate-derived signals regulate the expression of genes involved in both photosynthesis and metabolism, and control carbohydrate partiti...

journal_title：Journal of experimental botany

authors： Rook F,Bevan MW

更新日期：2003-01-01 00:00:00

abstract：:The cotyledon represents one of the bases of classification within the plant kingdom, providing the name-giving difference between dicotyledonous and monocotyledonous plants. It is also a fundamental organ and there have been many reports of cotyledon mutants in many species. The use of these mutants where they have a...

journal_title：Journal of experimental botany

authors： Chandler JW

更新日期：2008-01-01 00:00:00

abstract：:Soil respiration is affected by distributions of roots and soil carbon substrates and by temperature and soil water content, all of which vary spatially and temporally. The objective of this paper was to compare a manual system for measuring soil respiration in a temperate forest, which had a greater spatial distribut...

journal_title：Journal of experimental botany

authors： Savage KE,Davidson EA

更新日期：2003-03-01 00:00:00

abstract：:The endomembrane system offers many potential points where plant mating can be effectively controlled. This results from two basic features of angiosperm reproduction: the requirement for pollen tubes to pass through sporophytic tissues to gain access to ovules and the physiology of pollen tube growth that provides it...

journal_title：Journal of experimental botany

authors： Kumar A,McClure B

更新日期：2010-04-01 00:00:00

abstract：:Visual symptoms of the onset of senescence in Sandersonia aurantiaca flowers begin with fading of flower colour and wilting of the tissue. When fully senescent, the flowers form a papery shell that remains attached to the plant. The cell walls of these flowers have been examined to determine whether there are wall mod...

journal_title：Journal of experimental botany

authors： O'Donoghue EM,Somerfield SD,Heyes JA

更新日期：2002-03-01 00:00:00

abstract：:Root gravitropism is affected by many environmental stresses, including salinity, drought, and nutrient deficiency. One significant environmental stress, excess ammonium (NH(4)(+)), is well documented to inhibit root elongation and lateral root formation, yet little is known about its effects on the direction of root ...

journal_title：Journal of experimental botany

authors： Zou N,Li B,Dong G,Kronzucker HJ,Shi W

更新日期：2012-06-01 00:00:00

abstract：:By using a fine oil-filled glass microcapillary mounted on a micromanipulator, the solutes of individual plant cells can be sampled. These samples can then be analysed using a range of physical and chemical methods. Hydrostatic pressure (cell pressure probe), osmotic pressure (picolitre osmometer), organic solutes (en...

journal_title：Journal of experimental botany

authors： Tomos AD,Sharrock RA

更新日期：2001-04-01 00:00:00