Abstract：
:Most rhizobial strains inhibit rice root growth in the presence of calcium or potassium nitrates, but not ammonium nitrate. Certain rhizobial strains, however, such as strain R4, do not inhibit rice growth and can enter rice roots and multiply in the intercellular spaces. By using the green fluorescent protein (GFP) as a visual marker, it was found that Rhizobium became intimately associated with rice seedling roots within 24-48 h. During this initial period it was observed that strain R4 could cause structural changes resembling infection threads within the rice root hairs. Generally, the sites of the emerging lateral roots provide a temporary entry point for rhizobia, either by root hair entry or crack entry. All tested GFP-labelled Rhizobium strains infected the root hairs near the base of growing lateral roots. This study suggests that some strains may have the ability to infect rice root tissues via root hairs located at the emerging lateral roots and to spread extensively throughout the rice root.
journal_name
J Exp Botjournal_title
Journal of experimental botanyauthors
Perrine-Walker FM,Prayitno J,Rolfe BG,Weinman JJ,Hocart CHdoi
10.1093/jxb/erm181subject
Has Abstractpub_date
2007-01-01 00:00:00pages
3343-50issue
12eissn
0022-0957issn
1460-2431pii
erm181journal_volume
58pub_type
杂志文章abstract：:Increasing leaf transpiration efficiency (TE) may provide leads for growing rice like dryland cereals such as wheat (Triticum aestivum). To explore avenues for improving TE in rice, variations in stomatal conductance (gs) and mesophyll conductance (gm) and their anatomical determinants were evaluated in two cultivars ...
journal_title：Journal of experimental botany
pub_type： 杂志文章
doi：10.1093/jxb/erx314
更新日期：2017-11-02 00:00:00
abstract：:The adaptive capacity of long-lived organisms such as trees to the predicted climate changes, including severe and successive drought episodes, will depend on the presence of genetic diversity and phenotypic plasticity. Here, the involvement of epigenetic mechanisms in phenotypic plasticity toward soil water availabil...
journal_title：Journal of experimental botany
pub_type： 杂志文章
doi：10.1093/jxb/erx409
更新日期：2018-01-23 00:00:00
abstract：:RETINOBLASTOMA (RB) is a tumour suppressor gene originally discovered in patients that develop eye tumours. The pRb protein is now well established as a key cell-cycle regulator which suppresses G1-S transition via interaction with E2F-DP complexes. pRb function is also required for a wide range of biological processe...
journal_title：Journal of experimental botany
pub_type： 杂志文章,评审
doi：10.1093/jxb/eru069
更新日期：2014-06-01 00:00:00
abstract：:Magnesium-chelatase H subunit [CHLH/putative abscisic acid (ABA) receptor ABAR] positively regulates guard cell signalling in response to ABA, but the molecular mechanism remains largely unknown. A member of the sucrose nonfermenting 1 (SNF1)-related protein kinase 2 family, SnRK2.6/open stomata 1 (OST1)/SRK2E, which ...
journal_title：Journal of experimental botany
pub_type： 杂志文章
doi：10.1093/jxb/erv341
更新日期：2015-10-01 00:00:00
abstract：:Many plant species and/or genotypes are highly recalcitrant to Agrobacterium-mediated genetic transformation, and yet little is known about this phenomenon. Using several Arabidopsis genotypes/ecotypes, the results of this study indicated that phytohormone pretreatment could overcome this recalcitrance by increasing t...
journal_title：Journal of experimental botany
pub_type： 杂志文章
doi：10.1093/jexbot/51.353.1961
更新日期：2000-12-01 00:00:00
abstract：:Several types of small, endogenous signal peptides are now known to induce a wide range of local and systemic responses in plants, but how such signal peptide activity is transported over long distances remains unclear. In particular, the possible occurrence and root-to-shoot transport of signal peptide activity in th...
journal_title：Journal of experimental botany
pub_type： 杂志文章
doi：10.1093/jxb/erm081
更新日期：2007-01-01 00:00:00
abstract：:Plant hormones, in addition to regulating growth and development, are involved in biotic and abiotic stress responses. To investigate whether a hormone signalling pathway plays a role in the plant response to the heavy metal cadmium (Cd), gene expression data in response to eight hormone treatments were retrieved from...
journal_title：Journal of experimental botany
pub_type： 杂志文章
doi：10.1093/jxb/err335
更新日期：2012-02-01 00:00:00
abstract：:Plant injury by ozone (O3) occurs in three stages, O3 entrance through stomata, overcoming defences, and attack on bioreceptors. Concentration, deposition, and uptake of O3 are accessible by observation and modelling, while injury can be assessed visually or through remote sensing. However, the relationship between O3...
journal_title：Journal of experimental botany
pub_type： 杂志文章
doi：10.1093/jxb/ert032
更新日期：2013-04-01 00:00:00
abstract：:Assessment of dormancy inception, maintenance and release was studied for artificially dried immature seeds harvested throughout seed development in the barley cv. Triumph and its mutant line TL43. Each was grown in Spain and Scotland under low and high dormancy inducing conditions, respectively. Both TL43 and Triumph...
journal_title：Journal of experimental botany
pub_type： 杂志文章
doi：10.1093/jexbot/52.360.1499
更新日期：2001-07-01 00:00:00
abstract：:Seed germination is often induced by a pulse of red light perceived by phytochrome and cancelled by a subsequent pulse of far-red light. When the pulse of red light is followed by several hours of darkness, a pulse of far-red light is no longer effective and prolonged far-red is necessary to block germination. The aim...
journal_title：Journal of experimental botany
pub_type： 杂志文章
doi：10.1093/jexbot/51.347.1127
更新日期：2000-06-01 00:00:00
abstract：:As a PLC activity was implicated in the light transduction pathway that controls C(4) photosynthesis in Digitaria sanguinalis, a full length PLC cDNA (DsPLC2) was cloned. The proteins encoded by the two possible open reading frames were produced in Escherichia coli; they both harbour a PLC activity but with different ...
journal_title：Journal of experimental botany
pub_type： 杂志文章
doi：
更新日期：2002-06-01 00:00:00
abstract：:Understanding and diagnosing plant responses to stress will benefit greatly from three-dimensional (3D) measurement and analysis of plant properties because plant responses are strongly related to their 3D structures. Light detection and ranging (lidar) has recently emerged as a powerful tool for direct 3D measurement...
journal_title：Journal of experimental botany
pub_type： 杂志文章,评审
doi：10.1093/jxb/erl142
更新日期：2007-01-01 00:00:00
abstract：:MicroRNAs (miRNAs) are small noncoding regulatory RNAs that play key roles in the process of plant development. To date, extensive studies of miRNAs have been performed in a few model plants, but few efforts have focused on small RNAs (sRNAs) in conifers because of the lack of reference sequences for their enormous ge...
journal_title：Journal of experimental botany
pub_type： 杂志文章
doi：10.1093/jxb/erv103
更新日期：2015-06-01 00:00:00
abstract：:Abscisic acid conjugate concentrations increased in barley xylem sap under salinity, whereas it remained at a low level in the intercellular washing fluid (IWF) of barley primary leaves (Hordeum vulgare cv. Gerbel). Here it is shown that IWF contains beta-glucosidase activity which releases abscisic acid (ABA) from th...
journal_title：Journal of experimental botany
pub_type： 杂志文章
doi：
更新日期：2000-05-01 00:00:00
abstract：:The stamen produces pollen grains for pollination in higher plants. Coordinated development of four microsporangia in the stamen is essential for normal fertility. The roles of miR165/166-directed pathways in the establishment of adaxial-abaxial polarity have been well defined in leaves. However, the molecular mechani...
journal_title：Journal of experimental botany
pub_type： 杂志文章
doi：10.1093/jxb/ert178
更新日期：2013-08-01 00:00:00
abstract：:Plants synthesize carbohydrates in photosynthetic tissues, with the majority of plants transporting sucrose to non-photosynthetic tissues to sustain growth and development. While the anatomical, biochemical, and physiological processes regulating sucrose long-distance transport are well characterized, little is known ...
journal_title：Journal of experimental botany
pub_type： 杂志文章
doi：10.1093/jxb/ery203
更新日期：2018-07-18 00:00:00
abstract：:Cereal grain germination is central for plant early development, and efficient germination has a major role in crop propagation and malting. Endosperm starch is the prime energy reserve in germination and seedling establishment. In this study, it was hypothesized that optimized starch granule structure, and not only t...
journal_title：Journal of experimental botany
pub_type： 杂志文章
doi：10.1093/jxb/eru107
更新日期：2014-06-01 00:00:00
abstract：:The role of nitrate reduction to produce nitric oxide (NO) and its subsequent oxidation by oxyhaemoglobin as a mechanism to maintain plant cell energetics during hypoxia is examined. Nitrate reduction in hypoxic conditions can be considered as an alternative respiratory pathway, with nitrate as an intermediate electro...
journal_title：Journal of experimental botany
pub_type： 杂志文章,评审
doi：10.1093/jxb/erh272
更新日期：2004-12-01 00:00:00
abstract：:Carboxysomes are bacterial microcompartments (BMCs) that enhance CO2 fixation in all cyanobacteria. Structurally, carboxysome shell proteins are classified according to the type of oligomer formed: hexameric (BMC-H), trimeric (BMC-T) and pentameric (BMC-P) proteins. To understand the forces driving the evolution of th...
journal_title：Journal of experimental botany
pub_type： 杂志文章
doi：10.1093/jxb/erx115
更新日期：2017-06-01 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
pub_type： 杂志文章
doi：10.1093/jxb/erm162
更新日期：2007-01-01 00:00:00
abstract：:The inaccessibility of the zygote and proembryos of angiosperms within the surrounding maternal and filial tissues has hampered studies on early plant embryogenesis. Somatic and gametophytic embryo cultures are often used as alternative systems for molecular and biochemical studies on early embryogenesis, but are not ...
journal_title：Journal of experimental botany
pub_type： 杂志文章
doi：10.1093/jxb/erm358
更新日期：2008-01-01 00:00:00
abstract：:While marine phytoplankton rival plants in their contribution to global primary productivity, our understanding of their photosynthesis remains rudimentary. In particular, the kinetic diversity of the CO2-fixing enzyme, Rubisco, in phytoplankton remains unknown. Here we quantify the maximum rates of carboxylation (k c...
journal_title：Journal of experimental botany
pub_type： 杂志文章
doi：10.1093/jxb/erw163
更新日期：2016-05-01 00:00:00
abstract：:Stone cells negatively affect fruit quality because of their firm and lignified cell walls, so are targets for reduction in pear breeding programmes. However, there is only limited knowledge of the molecular mechanisms underlying the formation of stone cells. Here, we show that PbrMYB169, an R2R3 MYB transcription fac...
journal_title：Journal of experimental botany
pub_type： 杂志文章
doi：10.1093/jxb/erz039
更新日期：2019-03-27 00:00:00
abstract：:In spite of the importance of respiration in forest carbon budgets, the mechanisms by which physiological factors control stem respiration are unclear. An experiment was set up in a Eucalyptus globulus plantation in central Portugal with monoculture stands of 5-year-old and 10-year-old trees. CO(2) efflux from stems u...
journal_title：Journal of experimental botany
pub_type： 杂志文章
doi：10.1093/jxb/ern272
更新日期：2009-01-01 00:00:00
abstract：:The timing of seed germination is crucial for seed plants and is coordinated by internal and external cues, reflecting adaptations to different habitats. Physiological and molecular studies with lettuce and Arabidopsis thaliana have documented a strict requirement for light to initiate germination and identified many ...
journal_title：Journal of experimental botany
pub_type： 杂志文章
doi：10.1093/jxb/erz146
更新日期：2019-06-28 00:00:00
abstract：:The capacity of ribulose-1,5-bisphosphate carboxylase/oxygenase (Rubisco) to consume RuBP is a major limitation on the rate of net CO(2) assimilation (A) in C(3) and C(4) plants. The pattern of Rubisco limitation differs between the two photosynthetic types, as shown by comparisons of temperature and CO(2) responses o...
journal_title：Journal of experimental botany
pub_type： 杂志文章
doi：10.1093/jexbot/53.369.609
更新日期：2002-04-01 00:00:00
abstract：:The aim of this study is to understand the parameters regulating calcium ion distribution in leaves. Accumulation of ions in leaf tissue is in part dependent on import from the xylem. This import via the transpiration stream is more important for ions such as calcium that are xylem but not phloem mobile and cannot the...
journal_title：Journal of experimental botany
pub_type： 杂志文章
doi：10.1093/jxb/ern279
更新日期：2009-01-01 00:00:00
abstract：:Nitrogen (N) management is a promising agronomic strategy to minimize cadmium (Cd) contamination in crops. However, it is unclear how N affects Cd uptake by plants. Wild-type and iron uptake-inefficient tomato (Solanum lycopersicum) mutant (T3238fer) plants were grown in pH-buffered hydroponic culture to investigate t...
journal_title：Journal of experimental botany
pub_type： 杂志文章
doi：10.1093/jxb/ers036
更新日期：2012-05-01 00:00:00
abstract：:Root herbivores are important ecosystem drivers and agricultural pests, and, possibly as a consequence, plants protect their roots using a variety of defensive strategies. One aspect that distinguishes belowground from aboveground plant-insect interactions is that roots are constantly exposed to a set of soil-specific...
journal_title：Journal of experimental botany
pub_type： 杂志文章,评审
doi：10.1093/jxb/ert007
更新日期：2013-03-01 00:00:00
abstract：:Tortula ruralis (Syntrichia ruralis) is a useful model system for the study of gene control in response to severe water deficit-stress. EST gene discovery efforts utilizing desiccated gametophytes have identified two cDNAs designated Elipa and Elipb with significant similarity to early light-inducible proteins (ELIPs)...
journal_title：Journal of experimental botany
pub_type： 杂志文章
doi：10.1093/jexbot/53.371.1197
更新日期：2002-05-01 00:00:00
