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 availability was examined in Populus×euramericana. This work aimed at characterizing (i) the transcriptome plasticity, (ii) the genome-wide plasticity of DNA methylation, and (iii) the function of genes affected by a drought-rewatering cycle in the shoot apical meristem. Using microarray chips, differentially expressed genes (DEGs) and differentially methylated regions (DMRs) were identified for each water regime. The rewatering condition was associated with the highest variations of both gene expression and DNA methylation. Changes in methylation were observed particularly in the body of expressed genes and to a lesser extent in transposable elements. Together, DEGs and DMRs were significantly enriched in genes related to phytohormone metabolism or signaling pathways. Altogether, shoot apical meristem responses to changes in water availability involved coordinated variations in DNA methylation, as well as in gene expression, with a specific targeting of genes involved in hormone pathways, a factor that may enable phenotypic plasticity.
journal_name
J Exp Botjournal_title
Journal of experimental botanyauthors
Lafon-Placette C,Le Gac AL,Chauveau D,Segura V,Delaunay A,Lesage-Descauses MC,Hummel I,Cohen D,Jesson B,Le Thiec D,Bogeat-Triboulot MB,Brignolas F,Maury Sdoi
10.1093/jxb/erx409subject
Has Abstractpub_date
2018-01-23 00:00:00pages
537-551issue
3eissn
0022-0957issn
1460-2431pii
4683754journal_volume
69pub_type
杂志文章abstract::Seed size is an important component of grain yield and a key determinant trait for crop domestication. The Krug Yellow Dent long-term selection experiment for large and small seed provides a valuable resource to dissect genetic and phenotypic changes affecting seed size within a common genetic background. In this stud...
journal_title:Journal of experimental botany
pub_type: 杂志文章
doi:10.1093/jxb/erw006
更新日期:2016-03-01 00:00:00
abstract::Mate choice is an essential process during sexual plant reproduction, in which self-incompatibility (SI) is widely adopted as an intraspecific reproductive barrier to inhibit self-fertilization by many flowering plants. Genetic studies show that a single polymorphic S-locus, encoding at least two components from both ...
journal_title:Journal of experimental botany
pub_type: 杂志文章,评审
doi:10.1093/jxb/erp381
更新日期:2010-04-01 00:00:00
abstract::One should perhaps start off by asking the question, 'But what wood is it we want to see?' There are so many trees that make up the wood; within a post-genomics context, genes, transcripts, proteins, and metabolites are the more tangible ones. Rather than studying these components in isolation, a more holistic approac...
journal_title:Journal of experimental botany
pub_type: 杂志文章,评审
doi:10.1093/jxb/eri043
更新日期:2005-01-01 00:00:00
abstract::Phosphorus (P) deficiency and aluminum (Al) toxicity often coexist and limit plant growth on acid soils. It has been well documented that both P deficiency and Al toxicity alter root growth, including inhibition of primary roots and promotion of lateral roots. This suggests that plants adapt to both stresses through a...
journal_title:Journal of experimental botany
pub_type: 杂志文章,评审
doi:10.1093/jxb/erw188
更新日期:2016-06-01 00:00:00
abstract::The phloem is a well-known target of sucking and piercing insects that utilize the transported fluid as their major nutrient source. In addition to small molecules like sugars and amino acids, phloem sap of higher land plants contains proteins that can accumulate up to high concentrations. Although the knowledge about...
journal_title:Journal of experimental botany
pub_type: 杂志文章,评审
doi:10.1093/jxb/erj087
更新日期:2006-01-01 00:00:00
abstract::It has been 30 years since the first transformation of a gene into a plant species, and since that time a number of biotechnology products have been developed, with the most important being insect- and herbicide-resistant crops. The development of second-generation products, including nutrient use efficiency and toler...
journal_title:Journal of experimental botany
pub_type: 杂志文章,评审
doi:10.1093/jxb/eru236
更新日期:2014-10-01 00:00:00
abstract::Nitrate assimilation was analysed in chicory plants (Cichorium intybus L. cv. Turbo) during the early vegetative growth. Nitrate reductase (NR, EC 1.6.6.1) activity (NRA) was measured in roots and leaves at different developmental stages. During phase I, which corresponds to the structural growth (21-42 DAS), nitrate ...
journal_title:Journal of experimental botany
pub_type: 杂志文章
doi:10.1093/jexbot/51.344.539
更新日期:2000-03-01 00:00:00
abstract::Water deficits are known to alter fine root structure and function, but little is known about how these responses contribute to differences in drought resistance across grapevine rootstocks. The ways in which water deficit affects root anatomical and physiological characteristics were studied in two grapevine rootstoc...
journal_title:Journal of experimental botany
pub_type: 杂志文章
doi:10.1093/jxb/erv324
更新日期:2015-09-01 00:00:00
abstract::The floral repressor APETALA2 (AP2) in Arabidopsis regulates flowering through the age pathway. The AP2 ortholog in the alpine perennial Arabis alpina, PERPETUAL FLOWERING 2 (PEP2), was previously reported to control flowering through the vernalization pathway via enhancing the expression of another floral repressor P...
journal_title:Journal of experimental botany
pub_type: 杂志文章
doi:10.1093/jxb/ery423
更新日期:2019-02-05 00:00:00
abstract::Stomatal responses to leaf-to-air vapour pressure deficit (LVPD), leaf water potential components, and cuticular properties were characterized for Douglas-fir (Pseudotsuga menziesii) foliage collected from tree tops along a height gradient from 5 m to 58 m in order to explore height-related trends in stomatal sensitiv...
journal_title:Journal of experimental botany
pub_type: 杂志文章
doi:10.1093/jxb/erp291
更新日期:2010-01-01 00:00:00
abstract::The AP2 domain class of transcription factors is a large family of genes with various roles in plant development and adaptation but with very little functional information in plants other than Arabidopsis. Here, the characterization of an EAR motif-containing transcription factor, SlERF36, from tomato that affects sto...
journal_title:Journal of experimental botany
pub_type: 杂志文章
doi:10.1093/jxb/ert162
更新日期:2013-08-01 00:00:00
abstract::Both tracheary elements and fiber cells undergo programmed cell death (PCD) during xylem development. In this study we investigated the role of papain-like cysteine protease CEP1 in PCD in the xylem of Arabidopsis. CEP1 was located in the cell wall of xylem cells, and CEP1 expression levels in inflorescence stems incr...
journal_title:Journal of experimental botany
pub_type: 杂志文章
doi:10.1093/jxb/ery356
更新日期:2019-01-01 00:00:00
abstract::Among dicotyledon families, Chenopodiaceae has the most C(4) species and the greatest diversity in structural forms of C(4). In subfamily Salicornioideae, C(4) photosynthesis has, so far, only been found in the genus Halosarcia which is now included in the broadly circumscribed Tecticornia. Comparative anatomical, cyt...
journal_title:Journal of experimental botany
pub_type: 杂志文章
doi:10.1093/jxb/ern028
更新日期:2008-01-01 00:00:00
abstract::Chilling injury (CI) symptoms in avocado (Persea americana Mill.) fruit, expressed as mesocarp discoloration, were found to be associated with embryo growth and ethylene production during cold storage. In cvs Ettinger and Arad most mesocarp discoloration was located close to the base of the seed and was induced by eth...
journal_title:Journal of experimental botany
pub_type: 杂志文章
doi:10.1093/jxb/ern328
更新日期:2009-01-01 00:00:00
abstract::Environmental factors alter the impacts of parasitic plants on their hosts. However, there have been no controlled studies on how water availability modulates stem hemiparasites' effects on hosts. A glasshouse experiment was conducted to investigate the association between the Australian native stem hemiparasite Cassy...
journal_title:Journal of experimental botany
pub_type: 杂志文章
doi:10.1093/jxb/erv548
更新日期:2016-03-01 00:00:00
abstract::Two cultivars of spring wheat (Triticum aestivum L.) were grown to maturity in hydroponic cultures. Nitrogen accumulation was controlled by daily growth-limiting additions of nitrate together with all other nutrients in excess. Six different curves of N accumulation were used, with the same relative changes from day t...
journal_title:Journal of experimental botany
pub_type: 杂志文章
doi:10.1093/jexbot/51.352.1921
更新日期:2000-11-01 00:00:00
abstract::Topoisomerase I (topo I) is a nuclear enzyme which plays a fundamental role in several pathways involving changes in DNA topology. The topo I-mediated reaction is accomplished by the transient covalent binding of the enzyme to DNA (topo I-DNA complex). Stabilization of the topo I-DNA complex, leading to irreversible d...
journal_title:Journal of experimental botany
pub_type: 杂志文章
doi:10.1093/jxb/erj194
更新日期:2006-01-01 00:00:00
abstract::Plasma membranes were isolated using the aqueous polymer two-phase partition method from the algae Chara corallina and Chara longifolia, algae which differ in their ability to grow in saline environments. Enrichment of plasma membrane and depletion of tonoplast relative to the microsomal fraction was monitored using p...
journal_title:Journal of experimental botany
pub_type: 杂志文章
doi:10.1093/jxb/47.4.589
更新日期:1996-04-01 00:00:00
abstract::Despite impressive success in molecular physiological understanding of photosynthesis, and preliminary evidence on its potential for quantum shifts in agricultural productivity, the question remains of whether increased photosynthesis, without parallel fine-tuning of the associated processes, is enough. There is a dis...
journal_title:Journal of experimental botany
pub_type: 杂志文章
doi:10.1093/jxb/eraa087
更新日期:2020-04-06 00:00:00
abstract::Abscisic acid conjugate concentrations increased in barley xylem sap under salinity, whereas it remained at a low level in the intercellular washing fluid (IWF) of barley primary leaves (Hordeum vulgare cv. Gerbel). Here it is shown that IWF contains beta-glucosidase activity which releases abscisic acid (ABA) from th...
journal_title:Journal of experimental botany
pub_type: 杂志文章
doi:
更新日期:2000-05-01 00:00:00
abstract::Root phenotyping provides trait information for plant breeding. A shortcoming of high-throughput root phenotyping is the limitation to seedling plants and failure to make inferences on mature root systems. We suggest root system architecture (RSA) models to predict mature root traits and overcome the inference problem...
journal_title:Journal of experimental botany
pub_type: 杂志文章
doi:10.1093/jxb/erw494
更新日期:2017-02-01 00:00:00
abstract::In recent years, post-translational modification (PTM) of proteins has emerged as a key process that integrates plant growth and response to a changing environment. During the processes of domestication and breeding, plants were selected for various yield and adaptational characteristics. The post-translational modifi...
journal_title:Journal of experimental botany
pub_type: 杂志文章
doi:10.1093/jxb/ery222
更新日期:2018-08-31 00:00:00
abstract::The 1-deoxy-D-xylulose 5-phosphate synthase (DXS) enzyme catalyses the first biosynthetic step of the 2-C-methyl-D-erythritol 4-phosphate (MEP) pathway. In plants the MEP pathway is involved in the synthesis of the common precursors to the plastidic isoprenoids, isopentenyl diphosphate and dimethylallyl diphosphate, i...
journal_title:Journal of experimental botany
pub_type: 杂志文章
doi:10.1093/jxb/erq393
更新日期:2011-03-01 00:00:00
abstract::Recent years have witnessed a breathtaking increase in the availability of genome sequence data, providing evidence of the highly duplicate nature of eukaryotic genomes. Plants are exceptional among eukaryotic organisms in that duplicate loci compose a large fraction of their genomes, partly because of the frequent oc...
journal_title:Journal of experimental botany
pub_type: 杂志文章,评审
doi:10.1093/jxb/ers181
更新日期:2012-09-01 00:00:00
abstract::Endomembrane traffic in eukaryotic cells functions partially as a means of communication; delivery of membrane in one direction has to be balanced with a reduction at the other end. This effect is typically the case during the defence against pathogens. To combat pathogens, cellular growth and differentiation are supp...
journal_title:Journal of experimental botany
pub_type: 杂志文章,评审
doi:10.1093/jxb/erx363
更新日期:2017-12-18 00:00:00
abstract::The effect of the complex relationship between ethylene and abscisic acid (ABA) on flower development and senescence in Hibiscus rosa-sinensis L. was investigated. Ethylene biosynthetic (HrsACS and HrsACO) and receptor (HrsETR and HrsERS) genes were isolated and their expression evaluated in three different floral tis...
journal_title:Journal of experimental botany
pub_type: 杂志文章
doi:10.1093/jxb/err218
更新日期:2011-11-01 00:00:00
abstract::Many molecular mechanisms that regulate dormancy have been identified individually in controlled laboratory studies. However, little is known about how the seed employs this complex suite of mechanisms during dormancy cycling in the variable environment of the soil seed bank. Nevertheless, this behaviour is essential ...
journal_title:Journal of experimental botany
pub_type: 杂志文章,评审
doi:10.1093/jxb/erw477
更新日期:2017-02-01 00:00:00
abstract::Mechanistic inter-relationships in sinks between sucrose compartmentation/metabolism and phloem unloading/translocation are poorly understood. Developing grain legume seeds provide tractable experimental systems to explore this question. Metabolic demand by cotyledons is communicated to phloem unloading and ultimately...
journal_title:Journal of experimental botany
pub_type: 杂志文章
doi:10.1093/jxb/ern254
更新日期:2009-01-01 00:00:00
abstract::Photosynthesis is fundamental to biomass production, but sensitive to drought. To understand the genetics of leaf photosynthesis, especially under drought, upland rice cv. Haogelao, lowland rice cv. Shennong265, and 94 of their introgression lines (ILs) were studied at flowering and grain filling under drought and wel...
journal_title:Journal of experimental botany
pub_type: 杂志文章
doi:10.1093/jxb/err292
更新日期:2012-01-01 00:00:00
abstract::Rotundone was initially identified as a grape-derived compound responsible for the peppery aroma of Shiraz wine varieties. It has subsequently been found in black and white pepper and several other spices. Because of its potent aroma, the molecular basis for rotundone formation is of particular relevance to grape and ...
journal_title:Journal of experimental botany
pub_type: 杂志文章
doi:10.1093/jxb/erv491
更新日期:2016-02-01 00:00:00