Abstract:
BACKGROUND:Masson pine (Pinus massoniana) is one of the most important timber species with adaptable, fast growing, versatile advantages in southern China. Despite considerable research efforts, the cellular and molecular mechanisms of A1 toxicity and resistance in P. massoniana are still poorly understood. The effects of Al on uptake and translocation of Al and other minerals, cell division and nucleolus in P. massoniana were investigated. RESULTS:The results indicated that Al accumulated mainly in the roots, and small amounts were transported to aboveground organs. In the presence of Al, the contents of Mg and Fe in stems increased and decreased in roots. Accumulation of Mn in the organs was inhibited significantly. Evidence from cellular experiments showed that Al had an inhibitory effect on the root growth at all concentrations (10⁻⁵ - 10⁻² M) used. Chromosome fragments, chromosome bridges, C-mitosis and chromosome stickiness were induced during mitosis in the root tip cells. Al induced the formation of abnormal microtubule (MT) arrays, consisting of discontinuous wavy MTs or short MT fragments at the cell periphery. MT organization and function of the mitotic spindle and phragmoplast were severely disturbed. The nucleolus did not disaggregate normally and still remained its characteristic structure during metaphase. Nucleolar particles containing argyrophilic proteins were accumulated and leached out from the nucleus to the cytoplasm. Evidence confirmed that these proteins contained nucleophosmin (B23), nucleolin (C23) and fibrillarin. Western immunoblot analysis revealed that the contents of three nucleolar proteins increased significantly. CONCLUSION:Based on the information provided in this article, it is concluded that root tips of plants are the most sensitive organ to environmental stresses and the accumulation of Al ions primarily is in roots of P. massoniana, and small amounts of Al are transported to aboveground. Root apical meristems play a key role in the immediate reaction to stress factors by activating signal cascades to the other plant organs. Al induces a series of the cellular toxic changes concerning with cell division and nucleolus. The data presented above can be also used as valuable and early markers in cellular changes induced by metals for the evaluation of metal contamination.
journal_name
BMC Plant Bioljournal_title
BMC plant biologyauthors
Zhang H,Jiang Z,Qin R,Zhang H,Zou J,Jiang W,Liu Ddoi
10.1186/s12870-014-0264-9subject
Has Abstractpub_date
2014-09-30 00:00:00pages
264issn
1471-2229pii
s12870-014-0264-9journal_volume
14pub_type
杂志文章abstract:BACKGROUND:Identification of loci for grain yield (GY) and related traits, and dissection of the genetic architecture are important for yield improvement through marker-assisted selection (MAS). Two genome-wide association study (GWAS) methods were used on a diverse panel of 166 elite wheat varieties from the Yellow an...
journal_title:BMC plant biology
pub_type: 杂志文章
doi:10.1186/s12870-019-1781-3
更新日期:2019-04-29 00:00:00
abstract:BACKGROUND:Long noncoding RNAs (lncRNAs) have several known functions involving various biological regulatory processes in plant. However, the possible roles of lncRNAs during peanut seed development have not been fully explored. RESULTS:In this study, two peanut recombinant inbred lines (RIL8) that differ in seed siz...
journal_title:BMC plant biology
pub_type: 杂志文章
doi:10.1186/s12870-020-02405-4
更新日期:2020-05-06 00:00:00
abstract:BACKGROUND:Flax (Linum usitatissimum L.) is an economically important fiber and oil crop that has been grown for thousands of years. The genome has been recently sequenced and transcriptomics are providing information on candidate genes potentially related to agronomically-important traits. In order to accelerate funct...
journal_title:BMC plant biology
pub_type: 杂志文章
doi:10.1186/1471-2229-13-159
更新日期:2013-10-15 00:00:00
abstract:BACKGROUND:The ornamental crop Calluna vulgaris is of increasing importance to the horticultural industry in the northern hemisphere due to a flower organ mutation: the flowers of the 'bud-flowering' phenotype remain closed i.e. as buds throughout the total flowering period and thereby maintain more colorful flowers fo...
journal_title:BMC plant biology
pub_type: 杂志文章
doi:10.1186/1471-2229-9-148
更新日期:2009-12-14 00:00:00
abstract:BACKGROUND:Plant genomes have been transformed with full-length cDNA copies of viral genomes, giving rise to what has been called 'amplicon' systems, trying to combine the genetic stability of transgenic plants with the elevated replication rate of plant viruses. However, amplicons' performance has been very variable r...
journal_title:BMC plant biology
pub_type: 杂志文章
doi:10.1186/1471-2229-10-139
更新日期:2010-07-06 00:00:00
abstract:BACKGROUND:Papaver somniferum (opium poppy) is the source for several pharmaceutical benzylisoquinoline alkaloids including morphine, the codeine and sanguinarine. In response to treatment with a fungal elicitor, the biosynthesis and accumulation of sanguinarine is induced along with other plant defense responses in op...
journal_title:BMC plant biology
pub_type: 杂志文章
doi:10.1186/1471-2229-10-252
更新日期:2010-11-18 00:00:00
abstract:BACKGROUND:Protoplast technologies offer unique opportunities for fundamental research and to develop novel germplasm through somatic hybridization, organelle transfer, protoclonal variation, and direct insertion of DNA. Applying protoplast technologies to develop Dutch elm disease resistant American elms (Ulmus americ...
journal_title:BMC plant biology
pub_type: 杂志文章
doi:10.1186/1471-2229-12-75
更新日期:2012-05-30 00:00:00
abstract:BACKGROUND:Most of the natural variation in flowering time in Arabidopsis thaliana can be attributed to allelic variation at the gene FRIGIDA (FRI, AT4G00650), which activates expression of the floral repressor FLOWERING LOCUS C (FLC, AT5G10140). Usually, late-flowering accessions carry functional FRI alleles (FRI-wt),...
journal_title:BMC plant biology
pub_type: 杂志文章
doi:10.1186/s12870-014-0218-2
更新日期:2014-08-13 00:00:00
abstract:BACKGROUND:Birch (Betula platyphylla Suk.) contains triterpenoids with anti-HIV and anti-tumor pharmacological activities. However, the natural abundance of these triterpenoids is low, and their chemical synthesis is costly. Transcription factors have the ability to regulate the metabolite pathways of triterpenoids via...
journal_title:BMC plant biology
pub_type: 杂志文章
doi:10.1186/s12870-017-1150-z
更新日期:2017-11-21 00:00:00
abstract:BACKGROUND:Most studies of crop salinity tolerance are conducted under short-term stress condition within one growth stage. Understanding of the mechanisms of crop response to long-term salinity stress (LSS) is valuable for achieving the improvement of crop salinity tolerance. In the current study, we exposed allohexap...
journal_title:BMC plant biology
pub_type: 杂志文章
doi:10.1186/s12870-020-02423-2
更新日期:2020-05-12 00:00:00
abstract:BACKGROUND:Individual plants adapt to their immediate environment using a combination of biochemical, morphological and life cycle strategies. Because woody plants are long-lived perennials, they cannot rely on annual life cycle strategies alone to survive abiotic stresses. In this study we used suppression subtractive...
journal_title:BMC plant biology
pub_type: 杂志文章
doi:10.1186/1471-2229-14-182
更新日期:2014-07-08 00:00:00
abstract:BACKGROUND:Flavonoids have essential roles in flower pigmentation, fibre development and disease resistance in cotton. Previous studies show that accumulation of naringenin in developing cotton fibres significantly affects fibre growth. This study focused on determining the effects of the flavonoids naringenin, dihydro...
journal_title:BMC plant biology
pub_type: 杂志文章
doi:10.1186/s12870-019-2054-x
更新日期:2019-10-24 00:00:00
abstract:BACKGROUND:Cytochrome P450 monooxygenases form a large superfamily of enzymes that catalyze diverse reactions. The P450 SU1 gene from the soil bacteria Streptomyces griseolus encodes CYP105A1 which acts on various substrates including sulfonylurea herbicides, vitamin D, coumarins, and based on the work presented here, ...
journal_title:BMC plant biology
pub_type: 杂志文章
doi:10.1186/1471-2229-11-67
更新日期:2011-04-15 00:00:00
abstract:BACKGROUND:Western white pine (WWP, Pinus monticola Douglas ex D. Don) is of high interest in forest breeding and conservation because of its high susceptibility to the invasive disease white pine blister rust (WPBR, caused by the fungus Cronartium ribicola J. C. Fisch). However, WWP lacks genomic resource development ...
journal_title:BMC plant biology
pub_type: 杂志文章
doi:10.1186/s12870-014-0380-6
更新日期:2014-12-30 00:00:00
abstract:BACKGROUND:Salix caprea is a cold-tolerant pioneer species that is ecologically important in Europe and western and central Asia. However, little data is available on its population genetic structure and molecular ecology. We describe the levels of geographic population genetic structure in natural Irish populations of...
journal_title:BMC plant biology
pub_type: 杂志文章
doi:10.1186/s12870-014-0202-x
更新日期:2014-08-07 00:00:00
abstract:BACKGROUND:Wheat seeds provide a staple food and an important protein source for the world's population. Seed germination is vital to wheat growth and development and directly affects grain yield and quality. In this study, we performed the first comparative proteomic analysis of wheat embryo and endosperm during seed ...
journal_title:BMC plant biology
pub_type: 杂志文章
doi:10.1186/s12870-015-0471-z
更新日期:2015-04-08 00:00:00
abstract:BACKGROUND:Flavonoids are secondary metabolites that play important roles in the entire tea plant life cycle and have potential health-promoting properties. MYB transcription factors (TFs) are considered potentially important regulators of flavonoid biosynthesis in plants. However, the molecular mechanisms by which MYB...
journal_title:BMC plant biology
pub_type: 杂志文章
doi:10.1186/s12870-018-1502-3
更新日期:2018-11-20 00:00:00
abstract:BACKGROUND:Plant phloem consists of an interdependent cell pair, the sieve element/companion cell complex. Sucrose transporters are localized to enucleate sieve elements (SE), despite being transcribed in companion cells (CC). Due to the high turnover of SUT1, sucrose transporter mRNA or protein must traffic from CC to...
journal_title:BMC plant biology
pub_type: 杂志文章
doi:10.1186/1471-2229-3-8
更新日期:2003-12-11 00:00:00
abstract:BACKGROUND:Constitutive expression of the CBF/DREB1 for increasing freezing tolerance in woody plants is often associated with other phenotypic changes including dwarf plant and delayed flowering. These phenotypic changes have been observed when Arabidopsis DWARF AND DELAYED FLOWERING 1 (DDF1) was overexpressed in A. t...
journal_title:BMC plant biology
pub_type: 杂志文章
doi:10.1186/s12870-017-1053-z
更新日期:2017-06-19 00:00:00
abstract:BACKGROUND:Alternate bearing is a widespread phenomenon among crop plants, defined as the tendency of certain fruit trees to produce a high-yield crop one year ("on-year"), followed by a low-yield or even no crop the following year ("off-year"). Several factors may affect the balance between such developmental phase-tr...
journal_title:BMC plant biology
pub_type: 杂志文章
doi:10.1186/1471-2229-13-10
更新日期:2013-01-15 00:00:00
abstract:BACKGROUND:Epigenetic factors such as DNA methylation and histone modifications regulate a wide range of processes in plant development. Cytosine methylation and demethylation exist in a dynamic balance and have been associated with gene silencing or activation, respectively. In Arabidopsis, cytosine demethylation is a...
journal_title:BMC plant biology
pub_type: 杂志文章
doi:10.1186/1471-2229-13-172
更新日期:2013-10-31 00:00:00
abstract:BACKGROUND:Shoot architecture is fundamentally crucial to crop growth and productivity. As a key component of shoot architecture, plant height is known to be controlled by both genetic and environmental factors, though specific details remain scarce. RESULTS:In this study, 308 representative soybean lines from a core ...
journal_title:BMC plant biology
pub_type: 杂志文章
doi:10.1186/s12870-021-02836-7
更新日期:2021-01-25 00:00:00
abstract:BACKGROUND:'Fengzao' is an early-ripening bud mutant of 'Kyoho', which matures nearly 30 days earlier than 'Kyoho'. To gain a better understanding of the regulatory role of miRNAs in early-ripening of grape berry, high-throughput sequencing approach and quantitative RT-PCR validation were employed to identify miRNAs at...
journal_title:BMC plant biology
pub_type: 杂志文章
doi:10.1186/s12870-018-1516-x
更新日期:2018-11-16 00:00:00
abstract:BACKGROUND:MicroRNAs play important roles in the adaptive responses of plants to nutrient deficiencies. Most research, however, has focused on nitrogen (N), phosphorus (P), sulfur (S), copper (Cu) and iron (Fe) deficiencies, limited data are available on the differential expression of miRNAs and their target genes in r...
journal_title:BMC plant biology
pub_type: 杂志文章
doi:10.1186/s12870-015-0642-y
更新日期:2015-11-04 00:00:00
abstract:BACKGROUND:The Gibberellic Acid (GA) signal is governed by the GAI (Gibberellic Acid Insensitive) repressor, which is characterized by a highly conserved N-terminal DELLA domain. Deletion of the DELLA domain results in constitutive suppression of GA signaling. As the GAI transcript is transportable in phloem elements, ...
journal_title:BMC plant biology
pub_type: 杂志文章
doi:10.1186/1471-2229-13-165
更新日期:2013-10-21 00:00:00
abstract:BACKGROUND:Two thaumatin-like proteins (TLPs) were previously identified in phloem exudate of hybrid poplar (Populus trichocarpa x P. deltoides) using proteomics methods, and their sieve element localization confirmed by immunofluorescence. In the current study, we analyzed different tissues to further understand TLP e...
journal_title:BMC plant biology
pub_type: 杂志文章
doi:10.1186/1471-2229-10-191
更新日期:2010-08-26 00:00:00
abstract:BACKGROUND:During the photosynthesis, two isoforms of the fructose-1,6-bisphosphatase (FBPase), the chloroplastidial (cFBP1) and the cytosolic (cyFBP), catalyse the first irreversible step during the conversion of triose phosphates (TP) to starch or sucrose, respectively. Deficiency in cyFBP and cFBP1 isoforms provokes...
journal_title:BMC plant biology
pub_type: 杂志文章
doi:10.1186/s12870-016-0945-7
更新日期:2016-12-01 00:00:00
abstract:BACKGROUND:Cultivated rice species (Oryza sativa L. and O. glaberrima Steud.) are generally considered among the crop species most sensitive to salt stress. A handful of lines are known to be tolerant, and a small number of these have been used extensively as donors in breeding programs. However, these donors use many ...
journal_title:BMC plant biology
pub_type: 杂志文章
doi:10.1186/1471-2229-13-32
更新日期:2013-02-27 00:00:00
abstract:BACKGROUND:Although a number of leucine-rich repeat receptor-like kinase-encoding genes (LRR-RLKs) have been identified in plants, a functional role has been determined for only a few. Recent studies have demonstrated that an LRR-RLK, PXY/TDR, is important for the process of secondary vascular development. Other studie...
journal_title:BMC plant biology
pub_type: 杂志文章
doi:10.1186/1471-2229-13-94
更新日期:2013-07-01 00:00:00
abstract:BACKGROUND:The tomato kinase Pto confers resistance to bacterial speck disease caused by Pseudomonas syringae pv. tomato in a gene for gene manner. Upon recognition of specific avirulence factors the Pto kinase activates multiple signal transduction pathways culminating in induction of pathogen defense. The soluble cyt...
journal_title:BMC plant biology
pub_type: 杂志文章
doi:10.1186/1471-2229-6-22
更新日期:2006-10-06 00:00:00