Abstract:
:Plants can develop root systems with distinct anatomical features and morphological plasticity to forage nutrients distributed heterogeneously in soils. Lateral root proliferation is a typical nutrient-foraging response to a local supply of nitrate, which has been investigated across many plant species. However, the underlying mechanism in maize roots remains largely unknown. Here, we report on identification of a maize truncated MIKC-type MADS-box transcription factor (ZmTMM1) lacking K- and C-domains, expressed preferentially in the lateral root branching zone and induced by the localized supply of nitrate. ZmTMM1 belongs to the AGL17-like MADS-box transcription factor family that contains orthologs of ANR1, a key regulator for root nitrate foraging in Arabidopsis. Ectopic overexpression of ZmTMM1 recovers the defective growth of lateral roots in the Arabidopsis anr1 agl21 double mutant. The local activation of glucocorticoid receptor fusion proteins for ZmTMM1 and an artificially truncated form of AtANR1 without the K- and C-domains stimulates the lateral root growth of the Arabidopsis anr1 agl21 mutant, providing evidence that ZmTMM1 encodes a functional MADS-box that modulates lateral root development. However, no phenotype was observed in ZmTMM1-RNAi transgenic maize lines, suggesting a possible genetic redundancy of ZmTMM1 with other AGL17-like genes in maize. A comparative genome analysis further suggests that a nitrate-inducible transcriptional regulation is probably conserved in both truncated and non-truncated forms of ZmTMM1-like MADS-box transcription factors found in grass species.
journal_name
J Exp Botjournal_title
Journal of experimental botanyauthors
Liu Y,Jia Z,Li X,Wang Z,Chen F,Mi G,Forde B,Takahashi H,Yuan Ldoi
10.1093/jxb/eraa116subject
Has Abstractpub_date
2020-07-25 00:00:00pages
4547-4561issue
15eissn
0022-0957issn
1460-2431pii
5781150journal_volume
71pub_type
杂志文章abstract::Chrysanthemum is a typical short-day (SD) plant that responds to shortening daylength during the transition from the vegetative to the reproductive phase. FLOWERING LOCUS T (FT)/Heading date 3a (Hd3a) plays a pivotal role in the induction of phase transition and is proposed to encode a florigen. Three FT-like genes we...
journal_title:Journal of experimental botany
pub_type: 杂志文章
doi:10.1093/jxb/err387
更新日期:2012-02-01 00:00:00
abstract::The last steps of cysteine biosynthesis are catalysed by a bi-enzyme complex composed of serine acetyltransferase (SAT) and cysteine synthase, also called O-acetyl-serine (thiol) lyase (OASTL). SAT is responsible for the production of O-acetyl-serine (OAS) from serine and acetyl-coenzyme A, while OASTL catalyses the f...
journal_title:Journal of experimental botany
pub_type: 杂志文章,评审
doi:10.1093/jxb/erh151
更新日期:2004-08-01 00:00:00
abstract::With the general aim of elevating the content of the essential amino acid methionine in vegetative tissues of plants, alfalfa (Medicago sativa L.) and tobacco plants, as well as BY2 tobacco suspension cells, were transformed with a beta-zein::3HA gene under the 35S promoter of cauliflower mosaic virus encoding a rumen...
journal_title:Journal of experimental botany
pub_type: 杂志文章
doi:10.1093/jxb/eri237
更新日期:2005-09-01 00:00:00
abstract::The reproductive success of plants largely depends on the correct programming of developmental phase transitions, particularly the shift from vegetative to reproductive growth. The timing of this transition is finely regulated by the integration of an array of environmental and endogenous factors. Nitrogen is the mine...
journal_title:Journal of experimental botany
pub_type: 杂志文章
doi:10.1093/jxb/erx423
更新日期:2018-01-23 00:00:00
abstract::The composition of carotenoids, along with anthocyanins and chlorophyll, accounts for the distinctive range of colour found in the Actinidia (kiwifruit) species. Lutein and beta-carotene are the most abundant carotenoids found during fruit development, with beta-carotene concentration increasing rapidly during fruit m...
journal_title:Journal of experimental botany
pub_type: 杂志文章
doi:10.1093/jxb/erp218
更新日期:2009-01-01 00:00:00
abstract::BRCA2 is a breast tumour susceptibility factor with functions in maintaining genome stability through ensuring efficient double-strand DNA break (DSB) repair via homologous recombination. Although best known in vertebrates, fungi, and higher plants also possess BRCA2-like genes. To investigate the role of Arabidopsis ...
journal_title:Journal of experimental botany
pub_type: 杂志文章
doi:10.1093/jxb/erp135
更新日期:2009-01-01 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 two-fold purpose of this work is, first, to review current hypotheses for multiple paths of sugar-sensing in an oxygen-responsive context, and second, to present evidence for the extent of sugar/oxygen overlap regulating genes for sucrose and ethanol metabolism. Current data indicate that sugar signals in plants m...
journal_title:Journal of experimental botany
pub_type: 杂志文章,评审
doi:10.1093/jexbot/51.suppl_1.417
更新日期:2000-02-01 00:00:00
abstract::RNA polymerase II (RNAPII) is responsible for the transcription of most eukaryotic protein-coding genes. Analysing the topological distribution and quantification of RNAPII can contribute to understanding its function in interphase nuclei. Previously it was shown that RNAPII molecules in plant nuclei form reticulate s...
journal_title:Journal of experimental botany
pub_type: 杂志文章
doi:10.1093/jxb/erv091
更新日期:2015-03-01 00:00:00
abstract::Stem rust, caused by Puccinia graminis (Pg), remains a devastating disease of wheat, and the emergence of new Pg races virulent on deployed resistance genes fuels the ongoing search for sources of durable resistance. Despite its intrinsic durability, non-host resistance (NHR) is largely unexplored as a protection stra...
journal_title:Journal of experimental botany
pub_type: 杂志文章
doi:10.1093/jxb/ery066
更新日期:2018-04-27 00:00:00
abstract::Leaf gas exchange and temperature response were measured to assess temperature acclimation within a tree canopy in climatically contrasting genotypes of Acer rubrum L. Over the course of two 50 d continuous periods, growth temperature was controlled within tree crowns and the steady-state rate of leaf gas exchange was...
journal_title:Journal of experimental botany
pub_type: 杂志文章
doi:10.1093/jxb/erm177
更新日期:2007-01-01 00:00:00
abstract::Plants have evolved elaborate mechanisms for sensing and responding to sub-optimal environmental conditions. Abiotic stresses caused by these conditions trigger a wide range of local and long-distance signals which must be co-ordinated and integrated into whole-plant processes, such as development, in order for the pl...
journal_title:Journal of experimental botany
pub_type: 杂志文章,评审
doi:10.1093/jxb/erv172
更新日期:2015-08-01 00:00:00
abstract::Among three AO isoforms detected in pea plants, the activity of PAO-1 was dominant in leaves of seedlings and young leaves of mature plants, while PAO-3 revealed the highest band intensity in old leaves and roots. PAO-1 and PAO-3 are homodimers consisting of 145 kDa and 140 kDa subunits, respectively, while PAO-2 is a...
journal_title:Journal of experimental botany
pub_type: 杂志文章
doi:10.1093/jxb/erh134
更新日期:2004-06-01 00:00:00
abstract::Particular physiological traits allow the vascular plants Deschampsia antarctica Desv. and Colobanthus quitensis (Kunth) Bartl. to inhabit Antarctica. The photosynthetic performance of these species was evaluated in situ, focusing on diffusive and biochemical constraints to CO2 assimilation. Leaf gas exchange, Chl a f...
journal_title:Journal of experimental botany
pub_type: 杂志文章
doi:10.1093/jxb/erx148
更新日期:2017-05-17 00:00:00
abstract::The effect of water stress on the early seedling growth of onions was studied by placing newly-germinated seedlings in vermiculite equilibrated at different water potentials. Roots and shoots elongated more at -0.29 than at -0.64 MPa, but did not elongate at -1.66 MPa. However, roots and shoots of seedlings that had b...
journal_title:Journal of experimental botany
pub_type: 杂志文章
doi:10.1093/jexbot/52.358.1129
更新日期:2001-05-01 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::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::Meiosis is an essential process for sexually reproducing organisms, leading to the formation of specialized generative cells. This review intends to highlight current knowledge of early events during meiosis derived from various model organisms, including plants. It will particularly focus on cis- and trans-requiremen...
journal_title:Journal of experimental botany
pub_type: 杂志文章,评审
doi:10.1093/jxb/erq421
更新日期:2011-03-01 00:00:00
abstract::The three primary tissue systems of the funiculus each undergo unique developmental programs to support the growth and development of the filial seed. To understand the underlying transcriptional mechanisms that orchestrate development of the funiculus at the globular embryonic stage of seed development, we used laser...
journal_title:Journal of experimental botany
pub_type: 杂志文章
doi:10.1093/jxb/erw179
更新日期:2016-05-01 00:00:00
abstract::The rootless, aquatic Utricularia species belong to the largest and most cosmopolitan carnivorous plant genus. Populations of Utricularia plants are an important component of many standing, nutrient-poor, and humic waters. Carbon (C) allocation is an aspect of Utricularia's ecophysiology that has not been studied prev...
journal_title:Journal of experimental botany
pub_type: 杂志文章
doi:10.1093/jxb/erp286
更新日期:2010-01-01 00:00:00
abstract::Proanthocyanidins (PAs) are agronomically important biopolymers in higher plants composed primarily of catechin and epicatechin units. The biosynthesis of these natural products is regulated by transcription factors including proteins of the R2R3MYB class. To gain insight into the genetic control of the catechin and e...
journal_title:Journal of experimental botany
pub_type: 杂志文章
doi:10.1093/jxb/erq344
更新日期:2011-01-01 00:00:00
abstract::The nucleus contains the cell's genetic material, which directs cellular activity via gene regulation. The physical barrier of the nuclear envelope needs to be permeable to a variety of macromolecules and signals. The most prominent gateways for the transport of macromolecules are the nuclear pore complexes (NPCs). Th...
journal_title:Journal of experimental botany
pub_type: 杂志文章,评审
doi:10.1093/jxb/ers258
更新日期:2013-02-01 00:00:00
abstract::A cDNA clone encoding a 64-amino acid type 3 metallothionein protein, designated GhMT3a, was isolated from cotton (Gossypium hirsutum) by cDNA library screening. Northern blot analysis indicated that mRNA accumulation of GhMT3a was up-regulated not only by high salinity, drought, and low temperature stresses, but also...
journal_title:Journal of experimental botany
pub_type: 杂志文章
doi:10.1093/jxb/ern291
更新日期:2009-01-01 00:00:00
abstract::Increasing drought stress poses a severe threat to agricultural productivity. Plants, however, evolved numerous mechanisms to cope with such environmental stress. Here we report that the stress-induced production of a peptide signal contributes to stress tolerance. The expression of phytosulfokine (PSK) peptide precur...
journal_title:Journal of experimental botany
pub_type: 杂志文章
doi:10.1093/jxb/erab017
更新日期:2021-01-20 00:00:00
abstract::The endosperm is an essential part of the seed which sustains embryo development and contains storage reserves. Endosperm development involves a series of nuclear divisions in the absence of cytokinesis. In this study, it is shown that a mutant Arabidopsis plant carrying the disrupted At4g24900 gene exhibits severe de...
journal_title:Journal of experimental botany
pub_type: 杂志文章
doi:10.1093/jxb/ers243
更新日期:2012-10-01 00:00:00
abstract::Populus euphratica is a poplar species growing in arid regions of Central Asia, where its distribution remains nevertheless restricted to river-banks or to areas with an access to deep water tables. To test whether the hydraulic architecture of this species differs from that of other poplars with respect to this ecolo...
journal_title:Journal of experimental botany
pub_type: 杂志文章
doi:10.1093/jxb/eri198
更新日期:2005-08-01 00:00:00
abstract::Brassinosteroids (BRs) are steroid hormones that play key roles in plant development and defense. Our goal is to harness the extensive knowledge of the Arabidopsis BR signalling network for improving productivity in crop species. This first requires identifying components of the conserved network and their function in...
journal_title:Journal of experimental botany
pub_type: 杂志文章
doi:10.1093/jxb/eraa495
更新日期:2020-10-24 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::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::The physiological activity of exogenous 4-Cl-IAA, as compared to IAA, was examined in maize coleoptile segments. It was found that in this model system 4-Cl-IAA is much more active in the stimulation of elongation than IAA. Simultaneous measurements of growth and external pH indicated that administration of either IAA...
journal_title:Journal of experimental botany
pub_type: 杂志文章
doi:10.1093/jexbot/53.371.1089
更新日期:2002-05-01 00:00:00