Abstract：
:Expansins form a superfamily of plant proteins that assist in cell wall loosening during growth and development. The superfamily is divided into four families: EXPA, EXPB, EXLA, and EXLB (Sampedro and Cosgrove in Genome Biol 6:242, 2005. doi: 10.1186/gb-2005-6-12-242 ). Previous studies on Arabidopsis, rice, and Populus trichocarpa have clarified the evolutionary history of expansins in angiosperms (Sampedro et al. in Plant J 44:409-419, 2005. doi: 10.1111/j.1365-313X.2005.02540.x ). Amborella trichopoda is a flowering plant that diverged very early. Thus, it is a sister lineage to all other extant angiosperms (Amborella Genome Project in 342:1241089, 2013. doi: 10.1126/science.1241089 ). Because of this relationship, comparing the A. trichopoda expansin superfamily with those of other flowering plants may indicate which expansin genes were present in the last common ancestor of all angiosperms. The A. trichopoda expansin superfamily was assembled using BLAST searches with angiosperm expansin queries. The search results were analyzed and annotated to isolate the complete A. trichopoda expansin superfamily. This superfamily is similar to other angiosperm expansin superfamilies, but is somewhat smaller. This is likely because of a lack of genome duplication events (Amborella Genome Project 2013). Phylogenetic and syntenic analyses of A. trichopoda expansins have improved our understanding of the evolutionary history of expansins in angiosperms. Nearly all of the A. trichopoda expansins were placed into an existing Arabidopsis-rice expansin clade. Based on the results of phylogenetic and syntenic analyses, we estimate there were 12-13 EXPA genes, 2 EXPB genes, 1 EXLA gene, and 2 EXLB genes in the last common ancestor of all angiosperms.
journal_name
J Plant Resjournal_title
Journal of plant researchauthors
Seader VH,Thornsberry JM,Carey REdoi
10.1007/s10265-015-0772-1subject
Has Abstractpub_date
2016-03-01 00:00:00pages
199-207issue
2eissn
0918-9440issn
1618-0860pii
10.1007/s10265-015-0772-1journal_volume
129pub_type
杂志文章abstract：:The mist culture system was conducted to study secreted polysaccharides from soybean ( Glycine max) roots grown for 15 days. Roots were rinsed with distilled water (DW) for 15 min, then with 30 mM oxalic acid (OXA) for 15 min to remove ionically bound sugar. Released sugars were further fractionated into low (L) and h...
journal_title：Journal of plant research
pub_type： 杂志文章
doi：10.1007/s102650200012
更新日期：2002-04-01 00:00:00
abstract：:Apogamous fern species are often difficult to distinguish from related species because of their continuous morphological variations. To clarify the genetic relationships among the members of the Dryopteris varia complex, we analyzed the nucleotide sequences of the plastid gene rbcL and the nuclear gene PgiC. We also a...
journal_title：Journal of plant research
pub_type： 杂志文章
doi：10.1007/s10265-014-0652-0
更新日期：2014-11-01 00:00:00
abstract：:The purpose of this study was to investigate the hormonal regulation of gummosis in grape hyacinth (Muscari armeniacum) bulbs, focusing especially on the chemical composition of the gums. The application of ethephon (2-chloroethylphosphonic acid), an ethylene-releasing compound, at 1% and 2% (w/w) in lanolin as well a...
journal_title：Journal of plant research
pub_type： 杂志文章
doi：10.1007/s10265-009-0273-1
更新日期：2010-05-01 00:00:00
abstract：:Polymerase chain reaction fragment length polymorphisms and nucleotide sequences for a cytochrome P450 gene encoding flavonoid-3',5'-hydroxylase, Hf1, were studied in 19 natural taxa of Petunia. Natural Petunia taxa were classified into six groups based on major insertion or deletion events that occurred only in intro...
journal_title：Journal of plant research
pub_type： 杂志文章
doi：10.1007/s10265-006-0070-z
更新日期：2007-05-01 00:00:00
abstract：:The evolution of selfing from outcrossing ancestors is known to have occurred repeatedly in angiosperms. Theoretical studies have argued that the transition from outcrossing to selfing is accomplished more easily than the reverse case, and phylogenetic analyses involving self-compatible (SC) and self-incompatible (SI)...
journal_title：Journal of plant research
pub_type： 杂志文章
doi：10.1007/s10265-009-0245-5
更新日期：2009-09-01 00:00:00
abstract：:A new fossil leaf species, Liquidambar bella (Altingiaceae), is described from the lower part of the Eocene Huangniuling Formation, Maoming Basin, South China. Suprabasal venation in the fossil lobed Liquidambar leaves is reported for the first time. The new species provides additional palaeobotanical evidence on the ...
journal_title：Journal of plant research
pub_type： 杂志文章
doi：10.1007/s10265-019-01091-0
更新日期：2019-03-01 00:00:00
abstract：:The orientation of cortical microtubules (cMT) during gravitropism was studied in epidermal cells of azuki epicotyls. The relative proportion of cells with longitudinal cMT increased in the upper epidermis, and those with transverse cMT increased in the lower epidermis. When epicotyls were kept straight during gravist...
journal_title：Journal of plant research
pub_type： 杂志文章
doi：10.1007/s10265-004-0189-8
更新日期：2005-02-01 00:00:00
abstract：:The wild flowering cherry Prunus lannesiana var. speciosa is highly geographically restricted, being confined to the Izu Islands and neighboring peninsulas in Japan. In an attempt to elucidate how populations of this species have established we investigated the genetic diversity and differentiation in seven population...
journal_title：Journal of plant research
pub_type： 杂志文章
doi：10.1007/s10265-010-0352-3
更新日期：2011-01-01 00:00:00
abstract：:Mycoheterotrophic plants (MHPs) are leafless, achlorophyllous, and completely dependent on mycorrhizal fungi for their carbon supply. Mycorrhizal symbiosis is a mutualistic association with fungi that is undertaken by the majority of land plants, but mycoheterotrophy represents a breakdown of this mutualism in that pl...
journal_title：Journal of plant research
pub_type： 杂志文章
doi：10.1007/s10265-020-01244-6
更新日期：2021-01-01 00:00:00
abstract：:Although touch responses of plant roots are an important adaptive behavior, the molecular mechanism remains unclear. We have developed a bioassay for measuring root-bending responses to physical hardness in Arabidopsis thaliana seedlings. Our test requires a two-layer solid medium. Primary roots growing downward throu...
journal_title：Journal of plant research
pub_type： 杂志文章
doi：10.1007/s10265-008-0178-4
更新日期：2008-09-01 00:00:00
abstract：:The effects of sugars on root growth and on development of adventitious roots were analyzed in Arabidopsis thaliana. Seeds were sown on agar plates containing 0.0-5.0% sugars and placed vertically in darkness (DD) or under long day (LD, 16 h:8 h) conditions, so that the seedlings were constantly attached to the agar m...
journal_title：Journal of plant research
pub_type： 杂志文章
doi：10.1007/s10265-002-0074-2
更新日期：2003-04-01 00:00:00
abstract：:A new species Camellia nanningensis was described on the basis of well-preserved mummified wood from the upper Oligocene Yongning Formation of Nanning Basin in Guangxi Province, South China. This represents the most ancient fossil wood assigned to Camellia, and the earliest fossil record of the family Theaceae in Chin...
journal_title：Journal of plant research
pub_type： 杂志文章
doi：10.1007/s10265-016-0846-8
更新日期：2016-09-01 00:00:00
abstract：:Food storage tissue in the seeds of gymnosperms is female gametophyte (megagametophyte) that develops before fertilization, whereas, in seeds of angiosperms, food is stored as endosperm initiated by double fertilization. The megagametophyte is haploid, and endosperm is usually triploid, at least initially. Despite dif...
journal_title：Journal of plant research
pub_type： 杂志文章
doi：10.1007/s10265-008-0161-0
更新日期：2008-07-01 00:00:00
abstract：:Although genetically modified (GM) soybean has never been cultivated commercially in Japan, it is essential to set up the isolation distance required to prevent out-crossing between GM and conventional soybean in preparation for any future possibility of pollen transfer. The airborne soybean pollen was sampled using s...
journal_title：Journal of plant research
pub_type： 杂志文章
doi：10.1007/s10265-010-0357-y
更新日期：2011-01-01 00:00:00
abstract：:Plant MADS-box genes encode transcriptional regulators that are critical for a number of developmental processes, such as the establishment of floral organ identity, flowering time, and fruit development. It appears that the MADS-box gene family has undergone considerable gene duplication and divergence within various...
journal_title：Journal of plant research
pub_type： 杂志文章
doi：10.1007/s10265-005-0215-5
更新日期：2005-06-01 00:00:00
abstract：:The PEND protein is a DNA-binding protein in the inner envelope membrane of the developing chloroplast. It consists of a short pre-sequence, an N-terminal DNA-binding domain (cbZIP), a central repeat domain, and a C-terminal transmembrane domain. PEND homologs have been detected in various angiosperms, including Arabi...
journal_title：Journal of plant research
pub_type： 杂志文章
doi：10.1007/s10265-005-0200-z
更新日期：2005-04-01 00:00:00
abstract：:Expansin is a non-enzymatic protein which plays a pivotal role in cell wall loosening by inducing stress relaxation and extension in the plant cell wall. Previous studies on Arabidopsis, Petunia × hybrida, and tomato demonstrated that the suppression of expansin gene expression reduced plant growth but expansin overex...
journal_title：Journal of plant research
pub_type： 杂志文章
doi：10.1007/s10265-018-1067-0
更新日期：2019-03-01 00:00:00
abstract：:We determined the complete nucleotide sequence of the plastid genome of the unicellular marine red alga Porphyridium purpureum strain NIES 2140, belonging to the unsequenced class Porphyridiophyceae. The genome is a circular DNA composed of 217,694 bp with the GC content of 30.3%. Twenty-nine of the 224 protein-coding...
journal_title：Journal of plant research
pub_type： 杂志文章
doi：10.1007/s10265-014-0627-1
更新日期：2014-05-01 00:00:00
abstract：:Despite decades of research, ecologists continue to debate how spatial patterns of species richness arise across elevational gradients on the Earth. The equivocal results of these studies could emanate from variations in study design, sampling effort and data analysis. In this study, we demonstrate that the richness p...
journal_title：Journal of plant research
pub_type： 杂志文章
doi：10.1007/s10265-017-0946-0
更新日期：2017-09-01 00:00:00
abstract：:In the original publication of the article, one of the author names, "Tao Fuijwara" was published incorrectly. The correct name is Tao Fujiwara. ...
journal_title：Journal of plant research
pub_type： 已发布勘误
doi：10.1007/s10265-019-01140-8
更新日期：2019-11-01 00:00:00
abstract：:We examined the effects of mechanical load on transcripts of a set of cell wall related genes that are implicated in the formation of supporting tissues, by applying a 50 mg strip of aluminum foil to the inflorescence stem of Arabidopsis thaliana, a weight roughly half the fresh weight of the stem. Transcript levels o...
journal_title：Journal of plant research
pub_type： 杂志文章
doi：10.1007/s10265-009-0251-7
更新日期：2009-11-01 00:00:00
abstract：:Contrary to extensive researches on the roles of metallothioneins (MTs) in metal tolerance of animals, the roles of plant MTs in metal tolerance are largely under investigation. In this study, we evaluated the functional role of type 2 MT from Colocasia esculenta (CeMT2b) in Zn tolerance of tobacco and E. coli cells. ...
journal_title：Journal of plant research
pub_type： 杂志文章
doi：10.1007/s10265-012-0492-8
更新日期：2012-11-01 00:00:00
abstract：:Microtubules are highly dynamic structures that control the spatiotemporal pattern of cell growth and division. Microtubule dynamics are regulated by reversible protein phosphorylation involving both protein kinases and phosphatases. Never in mitosis A (NIMA)-related kinases (NEKs) are a family of serine/threonine kin...
journal_title：Journal of plant research
pub_type： 杂志文章,评审
doi：10.1007/s10265-015-0751-6
更新日期：2015-11-01 00:00:00
abstract：:Intra- and transcellular water movements in plants are regulated by the water permeability of the plasma membrane (PM) and vacuolar membrane (VM) in plant cells. In the present study, we investigated the osmotic water permeability of both PM (P ( f1)) and VM (P ( f2)), as well as the bulk osmotic water permeability of...
journal_title：Journal of plant research
pub_type： 杂志文章
doi：10.1007/s10265-006-0035-2
更新日期：2007-03-01 00:00:00
abstract：:Experiments were conducted to study the dynamics of nitrous oxide (N₂O) emission from wheat varieties viz., Sonalika, HUW 468, HUW 234 and DBW 14 grown in alluvial soils of North Bank Plain Agroclimatic Zone of Assam, India. Attempts were made to find out the relationship of N₂O emission with plant morphophysiological...
journal_title：Journal of plant research
pub_type： 杂志文章
doi：10.1007/s10265-011-0464-4
更新日期：2012-07-01 00:00:00
abstract：:The physiological response of trees to drought is crucial for understanding the risk of mortality and its feedbacks to climate under the increase in droughts due to climate change, especially for the largest trees in tropical rainforests because of their large contribution to total carbon storage and water use. We det...
journal_title：Journal of plant research
pub_type： 杂志文章
doi：10.1007/s10265-019-01161-3
更新日期：2020-03-01 00:00:00
abstract：:Drought is an important environmental factor that can severely affect plant growth and reproduction. Although many genes related to drought tolerance have been studied in economically important crops, very few genes have been functionally identified in Malus sieversii. In this study, we isolated a new gene based on th...
journal_title：Journal of plant research
pub_type： 杂志文章
doi：10.1007/s10265-019-01133-7
更新日期：2019-11-01 00:00:00
abstract：:Climate change scenarios predict an increase in air temperature and precipitation in northern temperate regions of Europe by the end of the century. Increasing atmospheric humidity inevitably resulting from more frequent rainfall events reduces water flux through vegetation, influencing plants' structure and functioni...
journal_title：Journal of plant research
pub_type： 杂志文章
doi：10.1007/s10265-019-01106-w
更新日期：2019-05-01 00:00:00
abstract：:Vascular plants have a network of vasculature in their leaves, which supplies water and nutrients and exports photoassimilates to other tissues. The vascular network is patterned during the development of leaf primordia through the induction of provascular differentiation by auxin. Arabidopsis thaliana Dof5.8, encodin...
journal_title：Journal of plant research
pub_type： 杂志文章
doi：10.1007/s10265-015-0712-0
更新日期：2015-07-01 00:00:00
abstract：:Pristine tropical rainforests in Southeast Asia have rich species diversity and are important habitats for many plant species. However, the extent of these forests has declined in recent decades and they have become fragmented due to human activities. These developments may reduce the genetic diversity of species with...
journal_title：Journal of plant research
pub_type： 杂志文章
doi：10.1007/s10265-007-0078-z
更新日期：2007-05-01 00:00:00
