Abstract:
:Enzymes that reduce the aldehyde chemical grouping (i.e. H-C=O) to its corresponding alcohol are probably crucial in maintaining plant health during stress. Succinic semialdehyde (SSA) is a mitochondrially-generated intermediate in the metabolism of gamma-aminobutyrate (GABA), which accumulates in response to a variety of biotic and abiotic stresses. SSA can be reduced to gamma-hydroxybutyrate (GHB) under oxygen deficiency and high light conditions. Recent evidence indicates that distinct cytosolic and plastidial glyoxylate reductase isoforms from Arabidopsis (designated herein after as AtGR1 and AtGR2, respectively) catalyse the in vitro conversion of SSA to GHB, as well as glyoxylate to glycolate, via NADPH-dependent reactions. In the present report, the responses of GHB and related amino acids, as well as NADP(+) and NADPH, were monitored in leaves from Arabidopsis or tobacco plants subjected to various abiotic stresses (i.e. Arabidopsis during exposure to salinity, drought, submergence, cold, or heat; tobacco during exposure to, and recovery from, submergence). Time-course experiments revealed that GHB accumulated in both Arabidopsis and tobacco plants subjected to stress, and that this accumulation was generally accompanied by higher GABA and alanine levels, higher NADPH/NADP(+) ratio, and lower glutamate levels. Furthermore, the analysis of gene expression in Arabidopsis revealed that the relative abundance of GR1 (salinity, drought, submergence, cold, and heat) and GR2 (cold and heat) transcripts was enhanced by the stress tested. Thus, GHB accumulation in plants is a general response to abiotic stress and appears to be regulated by both biochemical and transcriptional processes.
journal_name
J Exp Botjournal_title
Journal of experimental botanyauthors
Allan WL,Simpson JP,Clark SM,Shelp BJdoi
10.1093/jxb/ern122subject
Has Abstractpub_date
2008-01-01 00:00:00pages
2555-64issue
9eissn
0022-0957issn
1460-2431pii
ern122journal_volume
59pub_type
杂志文章abstract::Small heat shock proteins are a diverse, ancient, and important family of proteins. All organisms possess small heat shock proteins (sHSPs), indicating that these proteins evolved very early in the history of life prior to the divergence of the three domains of life (Archaea, Bacteria, and Eukarya). Comparing the stru...
journal_title:Journal of experimental botany
pub_type: 杂志文章,评审
doi:10.1093/jxb/ers355
更新日期:2013-01-01 00:00:00
abstract::Anthocyanin production is a characteristic response of flowering plants to unfavourable environmental conditions. The potential roles of flavonoids and anthocyanins in plant growth were investigated by growing Arabidopsis thaliana anthocyanin production mutants (transparent testa) under limiting nitrogen and high ligh...
journal_title:Journal of experimental botany
pub_type: 杂志文章
doi:10.1093/jxb/ers328
更新日期:2013-01-01 00:00:00
abstract::Genes encoding pathogenesis-related (PR-) proteins isolated from a cDNA library of Fusarium graminearum-infected wheat spikes of scab-resistant cultivar 'Sumai-3' were transformed into susceptible spring wheat, 'Bobwhite' using a biolistic transformation protocol, with the goal of enhancing levels of resistance agains...
journal_title:Journal of experimental botany
pub_type: 杂志文章
doi:10.1093/jxb/erg110
更新日期:2003-03-01 00:00:00
abstract::The rise in atmospheric [CO(2)] is associated with increasing air temperature. However, studies on plant responses to interactive effects of [CO(2)] and temperature are limited, particularly for leaf structural attributes. In this study, Eucalyptus saligna plants were grown in sun-lit glasshouses differing in [CO(2)] ...
journal_title:Journal of experimental botany
pub_type: 杂志文章
doi:10.1093/jxb/ers231
更新日期:2012-10-01 00:00:00
abstract::Symbiotic nitrogen fixation carried out in legume root nodules requires transition metals. These nutrients are delivered by the host plant to the endosymbiotic nitrogen-fixing bacteria living within the nodule cells, a process in which vascular transport is essential. As members of the Yellow Stripe-Like (YSL) family ...
journal_title:Journal of experimental botany
pub_type: 杂志文章
doi:10.1093/jxb/eraa390
更新日期:2020-12-31 00:00:00
abstract::The phenomenal increase in agricultural yields that we have witnessed in the last century has slowed down as we approach the limits of selective breeding and optimization of cultivation techniques. To support the yield increase required to feed an ever-growing population, we will have to identify new ways to boost the...
journal_title:Journal of experimental botany
pub_type: 杂志文章,评审
doi:10.1093/jxb/erz029
更新日期:2019-03-11 00:00:00
abstract::Tonoplast intrinsic proteins (TIPs) are integral membrane proteins that are known to function in plants as aquaporins. Here, we propose another role for TIPs during the fusion of protein storage vacuoles (PSVs) in aleurone cells, a process that is promoted by gibberellic acid (GA) and prevented by abscisic acid (ABA)....
journal_title:Journal of experimental botany
pub_type: 杂志文章
doi:10.1093/jxb/eru467
更新日期:2015-03-01 00:00:00
abstract::PCR-based differential screening was used to identify ethylene-induced genes in deep-water rice (Oryza sativa L.). One of the isolated cDNAs represented a novel protein, OsSBF1, with high homology to mammalian Na+/bile acid transporters and to sodium-dependent transporters from bacteria. One highly homologous protein ...
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
abstract::Relatively little is known about programmed cell death (PCD) in plants. It is nonetheless suggested here that tonoplast rupture and the subsequent rapid destruction of the cytoplasm can distinguish two large PCD classes. One class, which is here called 'autolytic', shows this feature, whilst the second class (called '...
journal_title:Journal of experimental botany
pub_type: 杂志文章,评审
doi:10.1093/jxb/err196
更新日期:2011-10-01 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::Adventitious roots (ARs) are important for some plants that depend on clonal propagation. In this study, we demonstrate that a salt-responsive gene module is involved in the negative regulation of AR development in poplar. In this module, the expression of bZIP53 is induced by salt stress and it encodes a transcriptio...
journal_title:Journal of experimental botany
pub_type: 杂志文章
doi:10.1093/jxb/eraa096
更新日期:2020-06-22 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::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::Virus-induced gene silencing (VIGS) is a common reverse genetics strategy for characterizing the function of genes in plants. The detailed mechanism governing RNA silencing efficiency triggered by viruses is largely unclear. Here, we reveal that a petunia (Petunia hybrida) ocs element binding factor, PhOBF1, one of th...
journal_title:Journal of experimental botany
pub_type: 杂志文章
doi:10.1093/jxb/erw490
更新日期:2017-02-01 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
pub_type: 杂志文章
doi:10.1093/jxb/erq065
更新日期:2010-04-01 00:00:00
abstract::In Crocus vernus, a spring bulbous species, prolonged growth at low temperatures results in the development of larger perennial organs and delayed foliar senescence. Because corm growth is known to stop before the first visual sign of leaf senescence, it is clear that factors other than leaf duration alone determine f...
journal_title:Journal of experimental botany
pub_type: 杂志文章
doi:10.1093/jxb/erp103
更新日期:2009-01-01 00:00:00
abstract::Nutrient requirements for plant growth are expected to rise in response to the predicted changes in CO(2) and temperature. In this context, little attention has been paid to the effects of soil temperature, which limits plant growth at early stages in temperate regions. A factorial growth-room experiment was conducted...
journal_title:Journal of experimental botany
pub_type: 杂志文章
doi:10.1093/jexbot/52.362.1913
更新日期:2001-09-01 00:00:00
abstract::This study describes the variation in the mean relative shoot Ca content within the angiosperms at the ordinal level. Data were derived from studies in the literature in which the shoot Ca content of two or more species had been compared, and from a hydroponic experiment in which plants were selected to represent the ...
journal_title:Journal of experimental botany
pub_type: 杂志文章
doi:10.1093/jxb/erg143
更新日期:2003-05-01 00:00:00
abstract::Nickel is an economically important metal and phytotechnologies are being developed to limit the impact of nickel mining on the environment. More than 300 plant species are known to hyperaccumulate nickel. However, our knowledge of the mechanisms involved in nickel accumulation in plants is very limited because it has...
journal_title:Journal of experimental botany
pub_type: 杂志文章
doi:10.1093/jxb/eru025
更新日期:2014-04-01 00:00:00
abstract::Soluble carbohydrates not only directly affect plant growth and development but also act as signal molecules in processes that enhance tolerance to cold stress. Raffinose family oligosaccharides (RFOs) are an example and play an important role in abiotic stress tolerance. This study aimed to determine whether galactin...
journal_title:Journal of experimental botany
pub_type: 杂志文章
doi:10.1093/jxb/erz450
更新日期:2020-01-01 00:00:00
abstract::One of the most important roles of plant roots is to take up essential mineral nutrients from the soil for use in plant growth and development. The uptake of mineral elements is mediated by various transporters belonging to different transporter families. Here we reviewed transporters for the uptake of macronutrients ...
journal_title:Journal of experimental botany
pub_type: 杂志文章,评审
doi:10.1093/jxb/erw060
更新日期:2016-06-01 00:00:00
abstract::In order to investigate the genetic bases of the physiological syndrome mealiness that causes abnormal fruit softening and juice loss in apples, an integrative approach was devised, consisting of sensory, instrumental, biochemical, genetic, and genomic methods. High levels of activity of α-L-arabinofuranosidase (α-AFa...
journal_title:Journal of experimental botany
pub_type: 杂志文章
doi:10.1093/jxb/err146
更新日期:2011-08-01 00:00:00
abstract::The complete elimination of unwanted cells during development is a repeated theme in both multicellular animals and in plants. In plants, such events have been extensively studied and reviewed in terms of their molecular regulation, of marker genes and proteins expressed, and in terms of cellular changes associated wi...
journal_title:Journal of experimental botany
pub_type: 杂志文章
doi:10.1093/jxb/erw364
更新日期:2017-02-01 00:00:00
abstract::At present and more so in the future, irrigated agriculture will take place under water scarcity. Insufficient water supply for irrigation will be the norm rather than the exception, and irrigation management will shift from emphasizing production per unit area towards maximizing the production per unit of water consu...
journal_title:Journal of experimental botany
pub_type: 杂志文章
doi:10.1093/jxb/erl165
更新日期:2007-01-01 00:00:00
abstract::The feedback regulation of ethylene biosynthesis in banana [Musa sp. (AAA group, Cavendish subgroup) cv. Grand Nain] fruit was investigated in an attempt to clarify the opposite effect of 1-methylcyclopropene (1-MCP), an ethylene action inhibitor, before and after the onset of ripening. 1-MCP pre-treatment completely ...
journal_title:Journal of experimental botany
pub_type: 杂志文章
doi:10.1093/jxb/erl265
更新日期:2007-01-01 00:00:00
abstract::Previously, the OEP16.1 channel pore in the outer envelope membrane of mature pea (Pisum sativum) chloroplasts in vitro has been characterized to be selective for amino acids. Isolation of OEP16.2, a second OEP16 isoform from pea, in the current study allowed membrane localization and gene expression of OEP16 to be fo...
journal_title:Journal of experimental botany
pub_type: 杂志文章
doi:10.1093/jxb/err375
更新日期:2012-03-01 00:00:00
abstract::Plasma membrane (PM) H+-ATPase is essential for plant growth and development. Various environmental stimuli regulate its activity, a process that involves many protein cofactors. However, whether endogenous small molecules play a role in this regulation remains unknown. Here, we describe a bio-guided isolation method ...
journal_title:Journal of experimental botany
pub_type: 杂志文章
doi:10.1093/jxb/erx156
更新日期:2017-05-17 00:00:00
abstract::Sweet cherry is a non-climacteric fruit and its ripening is regulated by abscisic acid (ABA) during fruit development. In this study, four cDNAs (PacCYP707A1-4) encoding 8'-hydroxylase, a key enzyme in the oxidative catabolism of ABA, were identified in sweet cherry fruits using tobacco rattle virus-induced gene silen...
journal_title:Journal of experimental botany
pub_type: 杂志文章
doi:10.1093/jxb/erv169
更新日期:2015-07-01 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
abstract::Sulfate transporters are integral membrane proteins controlling the flux of sulfate (SO42-) entering the cells and subcellular compartments across the membrane lipid bilayers. Sulfate uptake is a dynamic biological process that occurs in multiple cell layers and organs in plants. In vascular plants, sulfate ions are t...
journal_title:Journal of experimental botany
pub_type: 杂志文章,评审
doi:10.1093/jxb/erz132
更新日期:2019-08-19 00:00:00