Abstract:
:Heat shock transcription factors (Hsfs) are the central regulators of the heat shock (HS) stress response in all eukaryotic organisms. HsfA2 is one of the Arabidopsis class A Hsfs, and the induction of HsfA2 expression in response to HS stress is highest among all 21 Arabidopsis Hsfs. In this study, it is reported that basal and acquired thermotolerance was significantly enhanced in high-level HsfA2-overexpressed transgenic lines (El2Omega::HsfA2) in comparison with wild-type plants. By contrast, the dominant negative mutants of HsfA2 (El2Omega::HsfA2DeltaC264) plants displayed reduced thermotolerance. These results indicate that the HsfA2 gene plays a role in the HS stress response. Microarray analysis of the El2Omega::HsfA2 plants identified putative target genes, which included HS stress-inducible genes and other stress-responsive genes. Salt and osmotic stress induced HsfA2 gene expression. In fact, the El2Omega::HsfA2 plants showed enhanced tolerance to these stresses, suggesting that HsfA2 was involved in multiple stress tolerance. El2Omega::HsfA2 plants showed accelerated callus growth from root explants compared with the wild type, unlike the El2Omega::HsfA2DeltaC264 plants whose growth was delayed. These observations suggest that HsfA2 plays, in addition to its role in stress tolerance, an important role in cell proliferation.
journal_name
J Exp Botjournal_title
Journal of experimental botanyauthors
Ogawa D,Yamaguchi K,Nishiuchi Tdoi
10.1093/jxb/erm184subject
Has Abstractpub_date
2007-01-01 00:00:00pages
3373-83issue
12eissn
0022-0957issn
1460-2431pii
erm184journal_volume
58pub_type
杂志文章abstract::Oxidative cleavage of cis-epoxycarotenoids by 9-cis-epoxycarotenoid dioxygenase (NCED) is the critical step in the regulation of abscisic acid (ABA) synthesis in higher plants. ABA has been associated with dormancy and flower senescence, while also regulating plant adaptive responses to various environmental stresses....
journal_title:Journal of experimental botany
pub_type: 杂志文章
doi:10.1093/jxb/err293
更新日期:2012-01-01 00:00:00
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journal_title:Journal of experimental botany
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doi:
更新日期:2001-01-01 00:00:00
abstract::An investigation was carried out to assess the effect of nitrate supply on the root plasma membrane (PM) H+-ATPase of etiolated maize (Zea mays L.) seedlings grown in hydroponics. The treatment induced higher uptake rates of the anion and the expression of a putative high-affinity nitrate transporter gene (ZmNRT2.1), ...
journal_title:Journal of experimental botany
pub_type: 杂志文章
doi:10.1093/jxb/erg208
更新日期:2003-08-01 00:00:00
abstract::Plants are known to produce NO via the reduction of nitrite. Oxidative NO production in plants has been considered only with respect to a nitric oxide synthase (NOS). Here it is shown that tobacco cell suspensions emitted NO when hydroxylamine (HA) or salicylhydroxamate (SHAM), a frequently used AOX inhibitor, was add...
journal_title:Journal of experimental botany
pub_type: 杂志文章
doi:10.1093/jxb/erp077
更新日期:2009-01-01 00:00:00
abstract::Protein phosphorylation is key to the regulation of many proteins. Altered protein activity often requires the interaction of the phosphorylated protein with a class of "adapters" known as 14-3-3 proteins. This review will cover aspects of 14-3-3 interaction with key proteins of carbon and nitrogen metabolism such as ...
journal_title:Journal of experimental botany
pub_type: 杂志文章,评审
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更新日期:2003-01-01 00:00:00
abstract::In contrast to desiccation-tolerant 'orthodox' seeds, so-called 'intermediate' seeds cannot survive complete drying and are short-lived. All species of the genus Coffea produce intermediate seeds, but they show a considerable variability in seed desiccation tolerance (DT), which may help to decipher the molecular basi...
journal_title:Journal of experimental botany
pub_type: 杂志文章
doi:10.1093/jxb/erz508
更新日期:2020-02-19 00:00:00
abstract::The garden pea has been a model for the genetics of flowering for several decades and numerous flowering loci have been identified, but until recently little was known about the molecular nature of these loci. This paper presents an update on recent work on the molecular genetics of flowering in pea, outlining progres...
journal_title:Journal of experimental botany
pub_type: 杂志文章,评审
doi:10.1093/jxb/erp120
更新日期:2009-01-01 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::Lettuce (Lactuca sativa L.) seeds have poor shelf life and exhibit thermoinhibition (fail to germinate) above ∼25°C. Seed priming (controlled hydration followed by drying) alleviates thermoinhibition by increasing the maximum germination temperature, but reduces lettuce seed longevity. Controlled deterioration (CD) or...
journal_title:Journal of experimental botany
pub_type: 杂志文章
doi:10.1093/jxb/erq248
更新日期:2010-10-01 00:00:00
abstract::Gametophytic self-incompatibility (GSI) is controlled by a complex S locus containing the pistil determinant S-RNase and pollen determinant SFB/SLF. Tight linkage of the pistil and pollen determinants is necessary to guarantee the self-incompatibility (SI) function. However, multiple probable pollen determinants of ap...
journal_title:Journal of experimental botany
pub_type: 杂志文章
doi:10.1093/jxb/ers176
更新日期:2012-08-01 00:00:00
abstract::Global warming causes a faster increase of night temperature than of day temperature in tropical and subtropical zones. Little is known about the effect of high night temperature on storage lipids and transcriptome changes in oilseed rape. This study compared the total fatty acids and fatty acid compositions in seeds ...
journal_title:Journal of experimental botany
pub_type: 杂志文章
doi:10.1093/jxb/ery004
更新日期:2018-03-24 00:00:00
abstract::Several breeding initiatives have sought to improve flag leaf performance as its health and physiology are closely correlated to rice yield. Previous studies have described natural variation of photosynthesis for flag leaves; however, none have examined their performance under the non-steady-state conditions that prev...
journal_title:Journal of experimental botany
pub_type: 杂志文章
doi:10.1093/jxb/eraa520
更新日期:2020-11-07 00:00:00
abstract::Anthocyanins are important plant pigments that fulfil many physiological and ecological functions. Anthocyanin biosynthesis is controlled by numerous regulatory factors at the transcriptional level. Jasmonates (JAs) has been shown to induce anthocyanin accumulation in several plant species, however, the molecular mech...
journal_title:Journal of experimental botany
pub_type: 杂志文章
doi:10.1093/jxb/erp223
更新日期:2009-01-01 00:00:00
abstract::Plant root rhizosphere interactions with mutualistic microbes are diverse and numerous, having evolved over time in response to selective pressures on plants to attain anchorage and nutrients. These relationships can be considered to be formed through a combination of architectural connections: molecular architecture ...
journal_title:Journal of experimental botany
pub_type: 杂志文章,评审
doi:10.1093/jxb/erv038
更新日期:2015-04-01 00:00:00
abstract::The mistletoe, Viscum album, living on Scots pine (Pinus sylvestris) has been reported barely to regulate its transpiration and thus heavily to affect the gas exchange of its host. The extent of this mistletoe effect and its underlying mechanism has, so far, only been partially analysed. In this study, pine branches w...
journal_title:Journal of experimental botany
pub_type: 杂志文章
doi:10.1093/jxb/err432
更新日期:2012-04-01 00:00:00
abstract::Virus-induced flowering (VIF) exploits RNA or DNA viruses to express flowering time genes to induce flowering in plants. Such plant virus-based tools have recently attracted widespread attention for their fundamental and applied uses in flowering physiology and in accelerating breeding in dicotyledonous crops and wood...
journal_title:Journal of experimental botany
pub_type: 杂志文章
doi:10.1093/jxb/eraa080
更新日期:2020-05-30 00:00:00
abstract::Despite numerous reports implicating salicylic acid (SA) in plant salinity responses, the specific ionic mechanisms of SA-mediated adaptation to salt stress remain elusive. To address this issue, a non-invasive microelectrode ion flux estimation technique was used to study kinetics of NaCl-induced net ion fluxes in Ar...
journal_title:Journal of experimental botany
pub_type: 杂志文章
doi:10.1093/jxb/ert085
更新日期:2013-05-01 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 H2A.Z histone variant plays a role in the modulation of environmental responses, but the nature of the associated mechanisms remains enigmatic. We investigated global H2A.Z deposition and transcriptomic changes in rice (Oryza sativa) upon exposure to phosphate (Pi) deficiency and in response to RNAi knockdown of O...
journal_title:Journal of experimental botany
pub_type: 杂志文章
doi:10.1093/jxb/ery244
更新日期:2018-09-14 00:00:00
abstract::Drought stress limits root growth and inhibits cytokinin (CK) production. Increases in CK production through overexpression of isopentenyltransferase (ipt) alleviate drought damages to promote root growth. The objective of this study was to investigate whether CK-regulated root growth was involved in the alteration of...
journal_title:Journal of experimental botany
pub_type: 杂志文章
doi:10.1093/jxb/erw019
更新日期:2016-03-01 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::A major QTL affecting root traits and leaf ABA concentration was identified in maize (Zea mays L.) and named root-ABA1. For this QTL, back-cross-derived lines (BDLs) homozygous either for the (+) or for the (-) allele increasing or decreasing, respectively, root size and leaf ABA concentration, were developed. This st...
journal_title:Journal of experimental botany
pub_type: 杂志文章
doi:10.1093/jxb/erl161
更新日期:2007-01-01 00:00:00
abstract::An indica variety Takanari is known as one of the most productive rice varieties in Japan and consistently produces 20-30% heavier dry matter during ripening than Japanese commercial varieties in the field. The higher rate of photosynthesis of individual leaves during ripening has been recognized in Takanari. By using...
journal_title:Journal of experimental botany
pub_type: 杂志文章
doi:10.1093/jxb/err126
更新日期:2011-07-01 00:00:00
abstract::Ureides dramatically accumulate in shoots of N(2)-fixing soybean (Glycine max L. Merr.) under water deficit and this accumulation is higher in cultivars that have N(2) fixation that is sensitive to water deficit. One possible explanation is that ureide accumulation is associated with a feedback inhibition of nitrogena...
journal_title:Journal of experimental botany
pub_type: 杂志文章
doi:
更新日期:2000-08-01 00:00:00
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::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::Plants of Lolium perenne were grown in sterile solution culture. 15N-labelled glycine (Gly) coupled with gas chromatograph mass spectrometry was used to prove that non-mycorrhizal plants of L. perenne are capable of acquiring N in the form of intact Gly. It was estimated that a minimum of 80% of Gly-N uptake, over a 3...
journal_title:Journal of experimental botany
pub_type: 杂志文章
doi:
更新日期:2001-06-01 00:00:00
abstract::The scale, mechanism, and physiological importance of cuticular transpiration were last reviewed in this journal 5 and 10 years ago. Progress in our basic understanding of the underlying processes and their physiological and structural determinants has remained frustratingly slow ever since. There have been major adva...
journal_title:Journal of experimental botany
pub_type: 杂志文章,评审
doi:10.1093/jxb/erl017
更新日期:2006-01-01 00:00:00
abstract::The process of selecting certain desirable traits for plant breeding may compromise other potentially important traits, such as defences against pests; however, specific phenotypic changes occurring over the course of domestication are unknown for most domesticated plants. Cranberry (Vaccinium macrocarpon) offers a un...
journal_title:Journal of experimental botany
pub_type: 杂志文章
doi:10.1093/jxb/erq466
更新日期:2011-05-01 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