Abstract：
:The Arabidopsis thaliana THI1 protein is involved in thiamine biosynthesis and is targeted to both chloroplasts and mitochondria by N-terminal control regions. To investigate thi1 expression, a series of thi1 promoter deletions were fused to the beta-glucuronidase (GUS) reporter gene. Transgenic plants were generated and expression patterns obtained under different environmental conditions. The results show that expression derived from the thi1 promoter is detected early on during development and continues throughout the plant's life cycle. High levels of GUS expression are observed in both shoots and roots during vegetative growth although, in roots, expression is restricted to the vascular system. Deletion analysis of the thi1 promoter region identified a region that is responsive to light. The smallest fragment (designated Pthi322) encompasses 306 bp and possesses all the essential signals for tissue specificity, as well as responsiveness to stress conditions such as sugar deprivation, high salinity, and hypoxia.
journal_name
J Exp Botjournal_title
Journal of experimental botanyauthors
Ribeiro DT,Farias LP,de Almeida JD,Kashiwabara PM,Ribeiro AF,Silva-Filho MC,Menck CF,Van Sluys MAdoi
10.1093/jxb/eri168keywords:
subject
Has Abstractpub_date
2005-07-01 00:00:00pages
1797-804issue
417eissn
0022-0957issn
1460-2431pii
eri168journal_volume
56pub_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 efficacy of the cuticular transpiration barrier and its resistance to elevated temperatures are significantly higher in a typical water-saver than in a water-spender plant growing in hot desert. ...
journal_title：Journal of experimental botany
pub_type： 杂志文章
doi：10.1093/jxb/erz018
更新日期：2019-03-11 00:00:00
abstract：:Photo-oxidative stress was imposed under natural solar radiation on exposed and shaded sections of detached fruit of immature green tomato (Lycopersicon esculentum Miller = Solanum lycopersicum L.) mutants (anthocyanin absent, beta-carotene, Delta, and high pigment-1) and their nearly isogenic parents ('Ailsa Craig' a...
journal_title：Journal of experimental botany
pub_type： 杂志文章
doi：10.1093/jxb/erj136
更新日期：2006-01-01 00:00:00
abstract：:To obtain and concentrate reduced N from the environment, plants have evolved a diverse array of adaptations to utilize soil, biotic and atmospheric N. In symbiotic N(2)-fixing systems the potential for oversupply exists and regulation of activity to match demand is crucial. N status in plants is likely to be most str...
journal_title：Journal of experimental botany
pub_type： 杂志文章,评审
doi：10.1093/jexbot/52.suppl_1.435
更新日期：2001-03-01 00:00:00
abstract：:Drought events are a major challenge for many horticultural crops, including grapes, which are often cultivated in dry and warm climates. It is not understood how the cuticle contributes to the grape berry response to water deficit (WD); furthermore, the cuticular waxes and the related biosynthetic pathways are poorly...
journal_title：Journal of experimental botany
pub_type： 杂志文章
doi：10.1093/jxb/eraa046
更新日期：2020-05-30 00:00:00
abstract：:To ensure future food security, there is an urgent need for improved co-ordination of agricultural research. While advances in biotechnology hold considerable promise, significant technology gaps exist that may reduce their impact. Examples include an incomplete knowledge of target breeding environments, a limited und...
journal_title：Journal of experimental botany
pub_type： 杂志文章,评审
doi：10.1093/jxb/err241
更新日期：2012-01-01 00:00:00
abstract：:Wheat kernel texture, a major trait determining the end-use quality of wheat flour, is mainly influenced by puroindolines. These small basic proteins display in vitro lipid binding and antimicrobial properties, but their cellular functions during grain development remain unknown. To gain an insight into their biologic...
journal_title：Journal of experimental botany
pub_type： 杂志文章
doi：10.1093/jxb/err330
更新日期：2012-01-01 00:00:00
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journal_title：Journal of experimental botany
pub_type： 杂志文章,评审
doi：10.1093/jxb/erq271
更新日期：2011-01-01 00:00:00
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journal_title：Journal of experimental botany
pub_type： 杂志文章
doi：10.1093/jxb/eraa260
更新日期：2021-01-20 00:00:00
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journal_title：Journal of experimental botany
pub_type： 杂志文章
doi：10.1093/jxb/erf053
更新日期：2002-09-01 00:00:00
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journal_title：Journal of experimental botany
pub_type： 杂志文章,评审
doi：10.1093/jxb/err127
更新日期：2011-06-01 00:00:00
abstract：:Root hairs are important for nutrient uptake, anchorage, and plant-microbe interactions. From a population of rice (Oryza sativa) mutagenized by ethyl methanesulfonate (EMS), a short root hair2 (srh2) mutant was identified. In hydroponic culture, srh2 seedlings were significantly reduced in root hair length. Bubble-li...
journal_title：Journal of experimental botany
pub_type： 杂志文章
doi：10.1093/jxb/eru189
更新日期：2014-08-01 00:00:00
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journal_title：Journal of experimental botany
pub_type： 杂志文章
doi：10.1093/jxb/erq065
更新日期：2010-04-01 00:00:00
abstract：:The C4 photosynthetic pathway uses water more efficiently than the C3 type, yet biogeographical analyses show a decline in C4 species relative to C3 species with decreasing rainfall. To investigate this paradox, the hypothesis that the C4 advantage over C3 photosynthesis is diminished by drought was tested, and the un...
journal_title：Journal of experimental botany
pub_type： 杂志文章
doi：10.1093/jxb/erl302
更新日期：2007-01-01 00:00:00
abstract：:An H(+)-pyrophosphatase (PPase) gene named TsVP involved in basic biochemical and physiological mechanisms was cloned from Thellungiella halophila. The deduced translation product has similar characteristics to H(+)-PPases from other species, such as Arabidopsis and rice, in terms of bioinformation. The heterologous e...
journal_title：Journal of experimental botany
pub_type： 杂志文章
doi：10.1093/jxb/erl090
更新日期：2006-01-01 00:00:00
abstract：:Soybean cyst nematode (SCN) is currently the most devastating pathogen of soybean. SCN penetrates the root and migrates toward the central vascular bundle where it establishes a complex multinucleated feeding structure that provides plant-derived nutrients to support the development and growth of the nematode. To iden...
journal_title：Journal of experimental botany
pub_type： 杂志文章
doi：10.1093/jxb/erm211
更新日期：2007-01-01 00:00:00
abstract：:The role of abscisic acid (ABA) in the weakening of the endosperm cap prior to radicle protrusion in tomato (Lycopersicon esculentum Mill. cv. Moneymaker) seeds was studied. The endosperm cap weakened substantially in both water and ABA during the first 38 h of imbibition. After 38 h the force required for endosperm c...
journal_title：Journal of experimental botany
pub_type： 杂志文章
doi：
更新日期：2000-08-01 00:00:00
abstract：:Successful plant reproduction relies on the perfect orchestration of singular processes that culminate in the product of reproduction: the seed. The floral transition, floral organ development, and fertilization are well-studied processes and the genetic regulation of the various steps is being increasingly unveiled. ...
journal_title：Journal of experimental botany
pub_type： 信件,评审
doi：10.1093/jxb/eru233
更新日期：2014-09-01 00:00:00
abstract：:We aim to incorporate deep root traits into future wheat varieties to increase access to stored soil water during grain development, which is twice as valuable for yield as water captured at younger stages. Most root phenotyping efforts have been indirect studies in the laboratory, at young plant stages, or using indi...
journal_title：Journal of experimental botany
pub_type： 杂志文章
doi：10.1093/jxb/eru250
更新日期：2014-11-01 00:00:00
abstract：:Improving photosynthesis is considered a promising way to increase crop yield to feed a growing population. Realizing this goal requires non-destructive techniques to quantify photosynthetic variation among crop cultivars. Despite existing remote sensing-based approaches, it remains a question whether solar-induced fl...
journal_title：Journal of experimental botany
pub_type： 杂志文章
doi：10.1093/jxb/eraa537
更新日期：2020-12-19 00:00:00
abstract：:Nitrogen is one of the most important nutrients for plants and, in natural soils, its availability is often a major limiting factor for plant growth. Here we examine the effect of different forms of nitrogen nutrition and of photorespiration on gene expression in the model legume Lotus japonicus with the aim of identi...
journal_title：Journal of experimental botany
pub_type： 杂志文章
doi：10.1093/jxb/erw170
更新日期：2016-05-01 00:00:00
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journal_title：Journal of experimental botany
pub_type： 杂志文章
doi：10.1093/jxb/ert006
更新日期：2013-02-01 00:00:00
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journal_title：Journal of experimental botany
pub_type： 杂志文章
doi：10.1093/jxb/eri141
更新日期：2005-05-01 00:00:00
abstract：:Rice is an important crop that is very sensitive to salinity. However, some varieties differ greatly in this feature, making investigations of salinity tolerance mechanisms possible. The cultivar Pokkali is salinity tolerant and is known to have more extensive hydrophobic barriers in its roots than does IR20, a more s...
journal_title：Journal of experimental botany
pub_type： 杂志文章
doi：10.1093/jxb/err135
更新日期：2011-08-01 00:00:00
abstract：:The indeterminate gametophyte1 (ig1) mutation was first characterized to modulate female gametophyte development in maize (Zea mays). However, the function of its rice orthologue, OsIG1, remains unknown. For this, we first analysed OsIG1 localization from differential tissues in rice. Real-time quantitative PCR (qRT-P...
journal_title：Journal of experimental botany
pub_type： 杂志文章
doi：10.1093/jxb/eru396
更新日期：2015-01-01 00:00:00
abstract：:Many legumes have the capacity to enter into a symbiotic association with soil bacteria generically called 'rhizobia' that results in the formation of new lateral organs on roots called nodules within which the rhizobia fix atmospheric nitrogen (N). Up to 200 million tonnes of N per annum is fixed by this association....
journal_title：Journal of experimental botany
pub_type： 杂志文章,评审
doi：10.1093/jxb/erv357
更新日期：2015-08-01 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：:The relatively better performance of mycorrhizal plants subjected to drought stress has commonly been linked to improved root water uptake through the fungal regulation of plant aquaporins and hormones. In this study, we examined the role of ectomycorrhizal fungi in plant water relations and plant hormonal balance und...
journal_title：Journal of experimental botany
pub_type： 杂志文章
doi：10.1093/jxb/erz389
更新日期：2019-11-18 00:00:00
abstract：:A powerful technique is described to localize the activities of a range of enzymes in a wide variety of plant tissues. The method is based on the coupling of the enzymatic reaction to the reduction of NAD and subsequent reduction and precipitation of nitroblue tetrazolium. Enzymes that did not reduce NAD could be visu...
journal_title：Journal of experimental botany
pub_type： 杂志文章
doi：10.1093/jexbot/53.367.361
更新日期：2002-02-01 00:00:00
abstract：:Dormancy of hazel (Corylus avellana L.) seeds is alleviated by a chilling treatment during which cytological, hormonal, and biochemical changes occur. Phytic acid and phosphate mobilization have been examined during this treatment. Phytic acid accounted for 0.7% and up to 3.2% of dry weight in axiferous and cotyledona...
journal_title：Journal of experimental botany
pub_type： 杂志文章
doi：10.1093/jxb/eri032
更新日期：2005-02-01 00:00:00
