Abstract:
:Contrary to the increasing amount of knowledge regarding the functional roles of glycine-rich RNA-binding proteins (GRPs) in Arabidopsis thaliana in stress responses, the physiological functions of GRPs in rice (Oryza sativa) currently remain largely unknown. In this study, the functional roles of six OsGRPs from rice on the growth of E. coli and plants under cold or freezing stress conditions have been evaluated. Among the six OsGRPs investigated, OsGRP1, OsGRP4, and OsGRP6 were shown to have the ability to complement cold-sensitive BX04 E. coli mutant cells under low temperature conditions, and this complementation ability was correlated closely with their DNA- and RNA-melting abilities. Moreover, OsGRP1 and OsGRP4 rescued the growth-defect of a cold-sensitive Arabidopsis grp7 mutant plant under cold and freezing stress, and OsGRP6 conferred freezing tolerance in the grp7 mutant plant, in which the expression of AtGRP7 was suppressed and is sensitive to cold and freezing stresses. OsGRP4 and OsGRP6 complemented the defect in mRNA export from the nucleus to the cytoplasm in grp7 mutants during cold stress. Considering that AtGRP7 confers freezing tolerance in plants and harbours RNA chaperone activity during the cold adaptation process, the results of the present study provide evidence that GRPs in rice and Arabidopsis are functionally conserved, and also suggest that GRPs perform a function as RNA chaperones during the cold adaptation process in monocotyledonous plants, as well as in dicotyledonous plants.
journal_name
J Exp Botjournal_title
Journal of experimental botanyauthors
Kim JY,Kim WY,Kwak KJ,Oh SH,Han YS,Kang Hdoi
10.1093/jxb/erq058subject
Has Abstractpub_date
2010-05-01 00:00:00pages
2317-25issue
9eissn
0022-0957issn
1460-2431pii
erq058journal_volume
61pub_type
杂志文章abstract::Dry matter partitioning is the end result of the flow of assimilates from source organs via a transport path to the sink organs. The dry matter partitioning among the sinks of a plant is primarily regulated by the sinks themselves. The effect of source strength on dry matter partitioning is often not a direct one, but...
journal_title:Journal of experimental botany
pub_type: 杂志文章
doi:10.1093/jxb/47.Special_Issue.1281
更新日期:1996-08-01 00:00:00
abstract::Pectins are major components of plant primary cell walls. They include homogalacturonans (HGs), which are the most abundant pectin and can be the target of apoplastic enzymes like pectin methylesterases (PMEs) that control their methylesterification level. Several PMEs are expressed in the seed coat of Arabidopsis tha...
journal_title:Journal of experimental botany
pub_type: 杂志文章
doi:10.1093/jxb/erw025
更新日期:2016-04-01 00:00:00
abstract::Ethylene and gibberellins (GAs) are known to influence plant growth by mutual cross-talk and by interaction with other hormones. Transcript meta-analysis shows that GA and ethylene metabolism genes are expressed in the majority of plant organs. Both GAs and the ethylene precursor 1-amino-cyclopropane-1-carboxylic acid...
journal_title:Journal of experimental botany
pub_type: 杂志文章,评审
doi:10.1093/jxb/erm349
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abstract::Auxin is an essential regulator of plant growth and development, and auxin signaling components are conserved among land plants. Yet, a remarkable degree of natural variation in physiological and transcriptional auxin responses has been described among Arabidopsis thaliana accessions. As intraspecies comparisons offer...
journal_title:Journal of experimental botany
pub_type: 杂志文章
doi:10.1093/jxb/erw457
更新日期:2017-01-01 00:00:00
abstract::Mesophyll conductance is thought to be an important photosynthetic limitation in gymnosperms, but they currently constitute the most understudied plant group in regard to the extent to which photosynthesis and intrinsic water use efficiency are limited by mesophyll conductance. A comprehensive analysis of leaf gas exc...
journal_title:Journal of experimental botany
pub_type: 杂志文章
doi:10.1093/jxb/erx045
更新日期:2017-03-01 00:00:00
abstract::Flavonoids are plant pigments that provide health benefits for human and animal consumers. Understanding why domesticated crops have altered pigmentation patterns and unraveling the molecular/genetic mechanisms that underlie this will facilitate the breeding of new (healthier) varieties. We present an overview of chan...
journal_title:Journal of experimental botany
pub_type: 杂志文章
doi:10.1093/jxb/erz141
更新日期:2019-08-07 00:00:00
abstract::Inside chloroplasts, several abiotic stresses (including drought, high light, salinity, or extreme temperatures) induce a reduction in CO2 assimilation rates with a consequent increase in reactive oxygen species (ROS) production, ultimately leading to leaf senescence and yield loss. Photo-oxidation processes should th...
journal_title:Journal of experimental botany
pub_type: 杂志文章,评审
doi:10.1093/jxb/eru086
更新日期:2014-07-01 00:00:00
abstract::In this study, the uptake of Na+ into the cytosol of rice (Oryza sativa L. cvs Pokkali and BRRI Dhan29) protoplasts was measured using the acetoxy methyl ester of the fluorescent sodium-binding benzofuran isopthalate, SBFI-AM, and fluorescence microscopy. By means of inhibitor analyses the mechanisms for uptake and se...
journal_title:Journal of experimental botany
pub_type: 杂志文章
doi:10.1093/jxb/eri312
更新日期:2005-12-01 00:00:00
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journal_title:Journal of experimental botany
pub_type: 杂志文章
doi:10.1093/jxb/erv320
更新日期:2015-09-01 00:00:00
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journal_title:Journal of experimental botany
pub_type: 信件,评审
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更新日期:2014-09-01 00:00:00
abstract::Plants have evolved and adapted to different environments. Dwarfism is an adaptive trait of plants that helps them avoid high-energy costs under unfavourable conditions. The role of gibberellin (GA) in plant development has been well established. Several plant dehydration-responsive element-binding proteins (DREBs) ha...
journal_title:Journal of experimental botany
pub_type: 杂志文章
doi:10.1093/jxb/ers295
更新日期:2012-11-01 00:00:00
abstract::Mobilization of reserves in germinated cereal grains is critical for early seedling vigour, global crop productivity, and hence food security. Gibberellins (GAs) are central to this process. We have developed a spatio-temporal model that describes the multifaceted mechanisms of GA regulation in germinated barley grain...
journal_title:Journal of experimental botany
pub_type: 杂志文章
doi:10.1093/jxb/erz546
更新日期:2020-03-25 00:00:00
abstract::All members of the sulphotransferase (SOT, EC 2.8.2.-) protein family use 3'-phosphoadenosine 5'-phosphosulphate (PAPS) as the sulphuryl donor and transfer the sulphonate group to an appropriate hydroxyl group of several classes of substrates. These enzymes have highly conserved domains and can be found in eubacteria ...
journal_title:Journal of experimental botany
pub_type: 杂志文章,评审
doi:10.1093/jxb/erh183
更新日期:2004-08-01 00:00:00
abstract::The transcriptomes of senescing flag leaves collected from barley field plots with standard or high nitrogen supply were compared to identify genes specifically associated with nitrogen remobilization during leaf senescence under agronomically relevant conditions. In flag leaves collected in field plots with high nitr...
journal_title:Journal of experimental botany
pub_type: 杂志文章
doi:10.1093/jxb/eru094
更新日期:2014-07-01 00:00:00
abstract::Pectins are complex polysaccharides that are essential components of the plant cell wall. In this study, a novel putative Arabidopsis S-adenosyl-L-methionine (SAM)-dependent methyltransferase, termed QUASIMODO 3 (QUA3, At4g00740), has been characterized and it was demonstrated that it is a Golgi-localized, type II int...
journal_title:Journal of experimental botany
pub_type: 杂志文章
doi:10.1093/jxb/err211
更新日期:2011-10-01 00:00:00
abstract::Plant growth is continuous and modular, a combination that allows morphogenesis by cell division and elongation and serves to facilitate adaptation to changing environments. The pleiotropic phenotypes of the harlequin (hlq) mutant, isolated on the basis of ectopic expression of the abscisic acid (ABA)- and auxin-induc...
journal_title:Journal of experimental botany
pub_type: 杂志文章
doi:10.1093/jxb/eru198
更新日期:2014-08-01 00:00:00
abstract::Site-directed mutations have been generated in the pore and voltage sensor regions of the inwardly rectifying potassium channels KAT1 and KST1. The properties of mutant channels have been analysed in Xenopus oocytes, and give insights into the structure-function relations of these channels. ...
journal_title:Journal of experimental botany
pub_type: 杂志文章
doi:10.1093/jxb/48.Special_Issue.415
更新日期:1997-03-01 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::The P1B ATPase heavy metal ATPase 4 (HMA4) is responsible for zinc and cadmium translocation from roots to shoots in Arabidopsis thaliana. It couples ATP hydrolysis to cytosolic domain movements, enabling metal transport across the membrane. The detailed mechanism of metal permeation by HMA4 through the membrane remai...
journal_title:Journal of experimental botany
pub_type: 杂志文章
doi:10.1093/jxb/ery353
更新日期:2019-01-01 00:00:00
abstract::Ammonium is a major inorganic nitrogen source for plants. At low external supplies, ammonium promotes plant growth, while at high external supplies it causes toxicity. Ammonium triggers rapid changes in cytosolic pH, in gene expression, and in post-translational modifications of proteins, leading to apoplastic acidifi...
journal_title:Journal of experimental botany
pub_type: 杂志文章,评审
doi:10.1093/jxb/erx086
更新日期:2017-05-01 00:00:00
abstract::The influence of reduced glycine decarboxylase complex (GDC) activity on leaf atmosphere CO2 and 13CO2 exchange was tested in transgenic Oryza sativa with the GDC H-subunit knocked down in leaf mesophyll cells. Leaf measurements on transgenic gdch knockdown and wild-type plants were carried out in the light under phot...
journal_title:Journal of experimental botany
pub_type: 杂志文章
doi:10.1093/jxb/erz083
更新日期:2019-05-09 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/erj040
更新日期:2006-01-01 00:00:00
abstract::Shipping of peaches to distant markets and storage require low temperature; however, cold storage affects fruit quality causing physiological disorders collectively termed 'chilling injury' (CI). In order to ameliorate CI, different strategies have been applied before cold storage; among them heat treatment (HT) has b...
journal_title:Journal of experimental botany
pub_type: 杂志文章
doi:10.1093/jxb/erp267
更新日期:2009-01-01 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::The present study assesses light-induced variations in phenolic compounds in leaves of saplings of two co-occurring temperate species (Acer platanoides L., and Fraxinus excelsior L.) along a light gradient using a new non-invasive optical method (Dualex). The Dualex-derived UV absorbance of leaf epidermis (the sum of ...
journal_title:Journal of experimental botany
pub_type: 杂志文章
doi:10.1093/jxb/erm030
更新日期:2007-01-01 00:00:00
abstract::Inflorescence stalks produced the highest amount of ethylene in response to IAA as compared with other plant parts tested. Leaf age had an effect on IAA-induced ethylene with the youngest leaves showing the greatest stimulation. The highest amount of IAA-induced ethylene was produced in the root or inflorescence tip w...
journal_title:Journal of experimental botany
pub_type: 杂志文章
doi:10.1093/jxb/ern159
更新日期:2008-01-01 00:00:00
abstract::Phospholipid signaling plays an important role in plant immune responses against phytopathogenic bacteria in Nicotiana benthamiana. Here, we isolated two phospholipase C2 (PLC2) orthologs in the N. benthamiana genome, designated as PLC2-1 and 2-2. Both NbPLC2-1 and NbPLC2-2 were expressed in most tissues and were indu...
journal_title:Journal of experimental botany
pub_type: 杂志文章
doi:10.1093/jxb/eraa233
更新日期:2020-08-06 00:00:00
abstract::In order to investigate the physiological role of ethylene in the initiation and subsequent progression of softening, pear fruit were treated with propylene, an analogue of ethylene or 1-methylcyclopropene (1-MCP), a gaseous inhibitor of ethylene action at the preclimacteric or ripening stages. The propylene treatment...
journal_title:Journal of experimental botany
pub_type: 杂志文章
doi:10.1093/jxb/erg073
更新日期:2003-02-01 00:00:00
abstract::The production of bioenergy from grasses has been developing quickly during the last decade, with Miscanthus being among the most important choices for production of bioethanol. However, one of the key barriers to producing bioethanol is the lack of information about cell wall structure. Cell walls are thought to disp...
journal_title:Journal of experimental botany
pub_type: 杂志文章
doi:10.1093/jxb/erv183
更新日期:2015-07-01 00:00:00
abstract::Accounting for almost one-fifth of the primary production on Earth, the unicellular eukaryotic group of diatoms plays a key ecological and biogeochemical role in our contemporary oceans. Furthermore, as producers of various lipids and pigments, and characterized by their finely ornamented silica cell wall, diatoms hol...
journal_title:Journal of experimental botany
pub_type: 杂志文章,评审
doi:10.1093/jxb/ert387
更新日期:2014-06-01 00:00:00