Abstract：
:Phytagel media were evaluated as systems to mechanically impede roots of A. thaliana. Studying mechanical properties of Phytagel and exploring the root response to mechanical stimulation can facilitate plant culture and plant development. Breaking strengths of 0.5-2.0% phytagel media were tested by uniaxial compression test. Different phytagel concentrations were set to alter the strength of layers in growth medium. Negative correlations were observed between root length, straightness and medium strength. When roots elongated through soft upper-layer (0.6%), penetration ratio decreased with the increase of lower-layer strength (0.6-1.2%) and all roots couldn't penetrate into lower-layer with concentration ≥1.2%. Roots could grow into soft lower-layer (0.6%) from hard upper-layer (0.6-1.2%), with decreased penetration ratio. When roots grew in soft lower-layer, the growth rate linked with upper-layer strength increased to peak. Roots penetration capability into 1.2% lower-layer was improved by growing plants through moderate layer inserted between soft and hard layer, and roots in 0.8% moderate medium have a significant higher penetration ratio than that in 1.0%. It was concluded that the Phytagel systems studied were suitable for studying the effect of mechanical impedance on the elongation of A. thaliana roots. The medium strength affected root penetration significantly and acclimation can improve root penetration capability.
journal_name
J Plant Resjournal_title
Journal of plant researchauthors
Yan J,Wang B,Zhou Ydoi
10.1007/s10265-017-0926-4subject
Has Abstractpub_date
2017-09-01 00:00:00pages
941-950issue
5eissn
0918-9440issn
1618-0860pii
10.1007/s10265-017-0926-4journal_volume
130pub_type
杂志文章abstract：:The vegetative phenology of 29 alpine species, including herbaceous and woody summergreens and evergreens, was investigated. Summergreen species initiated and completed leaf growth earlier than evergreen species. The green period of leaves in summergreen plants was determined largely by the time of growth initiation. ...
journal_title：Journal of plant research
pub_type： 杂志文章
doi：10.1007/s10265-010-0320-y
更新日期：2010-09-01 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：:The Chenopodiaceae is one of the families including C4 species among eudicots. In this family, the genus Chenopodium is considered to include only C3 species. However, we report here a transition from C3 photosynthesis to proto-Kranz to C3-C4 intermediate type in Chenopodium. We investigated leaf anatomical and photos...
journal_title：Journal of plant research
pub_type： 杂志文章
doi：10.1007/s10265-019-01135-5
更新日期：2019-11-01 00:00:00
abstract：:Recent advances in our understanding of abscisic acid (ABA) signaling have identified a core pathway consisting of receptors (PYR/PYL/RCAR), protein phosphatases (PP2C), protein kinases (SnRK2), and several downstream factors that will lead to the next stage of ABA research. Systems biology will be an important concep...
journal_title：Journal of plant research
pub_type： 杂志文章,评审
doi：10.1007/s10265-011-0418-x
更新日期：2011-07-01 00:00:00
abstract：:Sex allocation of a cosexual wind-pollinated species, Quercus dentata (Fagaceae), was analyzed using biomass, carbon, nitrogen and phosphorus as currencies based on data accumulated for 61 individuals from 1997-2004. Strongly female-biased sex allocation was indicated when measured in terms of biomass and carbon, but ...
journal_title：Journal of plant research
pub_type： 杂志文章
doi：10.1007/s10265-005-0206-6
更新日期：2005-06-01 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：: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：:Various photoreceptors in plants are used to monitor important environmental light signals and regulate plant development. Despite their functional importance, recent studies have demonstrated that red/far-red absorbing phytochromes or blue/UV-A absorbing cryptochromes are involved in local adaptation within a species...
journal_title：Journal of plant research
pub_type： 杂志文章
doi：10.1007/s10265-010-0361-2
更新日期：2011-01-01 00:00:00
abstract：:Drought is believed to cause many metabolic changes which affect plant growth and development. However, it might be mitigated by various inorganic substances, such as nitrogen. Thus, the study was carried out to investigate the effect of foliar-applied urea with or without urease inhibitor N-(n-butyl) thiophosphoric t...
journal_title：Journal of plant research
pub_type： 杂志文章
doi：10.1007/s10265-017-0933-5
更新日期：2017-05-01 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：:Lavoisiera campos-portoana Barreto (Melastomataceae) has two kinds of leaves, pubescent and glabrous, and branches may have one or both types of leaves at the same moment. The plant is endemic to high altitude rocky fields in Brazil where rainfall is very seasonal. We predicted that these two l...
journal_title：Journal of plant research
pub_type： 杂志文章
doi：10.1007/s10265-011-0416-z
更新日期：2012-01-01 00:00:00
abstract：:The seminal root system of wheat (Triticum aestivum L.) is composed of the primary seminal root, the first pair of seminal roots, and the second pair of seminal roots, which are known to grow in different directions. The direction of root growth, which can be expressed by theta (the angle between the root and the plum...
journal_title：Journal of plant research
pub_type： 杂志文章
doi：10.1007/BF02344552
更新日期：1996-12-01 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：:Structures and levels of anthocyanin-related compounds were analyzed during the development of marginal picotee petals in white-center and white-marginal cultivars of Petunia hybrida. In the white site of a white-center cultivar, higher concentrations of quercetin derivatives possessing 7-O-glucoside and/or 3'-O-gluco...
journal_title：Journal of plant research
pub_type： 杂志文章
doi：10.1007/s10265-007-0086-z
更新日期：2007-07-01 00:00:00
abstract：:In young cucumber seedlings, the peg is a polar out-growth of tissue that functions by snagging the seed coat, thereby freeing the cotyledons. Previous studies have indicated that peg formation is gravity dependent. In this study we analyzed peg formation in cucumber seedlings (Cucumis sativus L. cv Burpee Hybrid II) ...
journal_title：Journal of plant research
pub_type： 杂志文章
doi：10.1007/pl00013907
更新日期：1999-12-01 00:00:00
abstract：:A knowledge of fern phenology promotes understanding of the biology and ecology of ferns. In this study, the phenology of 16 fern species in a subtropical broadleaf forest (N24 degrees 46', E121 degrees 34') in northeastern Taiwan was monitored from August 1997 to August 2001. Every fern produced both fertile and ster...
journal_title：Journal of plant research
pub_type： 杂志文章
doi：10.1007/s10265-008-0191-7
更新日期：2009-01-01 00:00:00
abstract：:Plants generate various tissues and organs via a strictly regulated developmental program. The plant vasculature is a complex tissue system consisting of xylem and phloem tissues with a layer of cambial cells in between. Multiple regulatory steps are involved in vascular development. Although molecular and genetic stu...
journal_title：Journal of plant research
pub_type： 杂志文章,评审
doi：10.1007/s10265-017-0998-1
更新日期：2018-01-01 00:00:00
abstract：:Plant triterpenoids are a diverse group of secondary metabolites with wide distribution, high chemical diversity and interesting pharmacological and antimicrobial properties. The first step in the biosynthesis of all triterpenoids is the cyclization of the 2,3-oxidosqualene precursor, catalyzed by oxidosqualene cyclas...
journal_title：Journal of plant research
pub_type： 杂志文章
doi：10.1007/s10265-016-0797-0
更新日期：2016-05-01 00:00:00
abstract：:In phylogenetic trees generated from partial trnL(UAA) intron sequences, the hornworts (represented by nine species from the genera Anthoceros, Dendroceros, Megaceros, Notothylas and Phaeoceros) are resolved as a monophyletic group and are separated from the clades of mosses, liverworts and tracheophytes. A secondary ...
journal_title：Journal of plant research
pub_type： 杂志文章
doi：10.1007/s10265-003-0118-2
更新日期：2003-10-01 00:00:00
abstract：:Mixotrophic plants obtain carbon by their own photosynthetic activity and from their root-associated mycorrhizal fungi. Mixotrophy is deemed a pre-adaptation for evolution of mycoheterotrophic nutrition, where plants fully depend on fungi and lose their photosynthetic activity. The aim of this study was to clarify myc...
journal_title：Journal of plant research
pub_type： 杂志文章
doi：10.1007/s10265-020-01233-9
更新日期：2020-11-01 00:00:00
abstract：:gamma-Aminobutyrate transaminase (GABA-T) catalyzes the conversion of GABA to succinic semialdehyde. Using differential display PCR and cDNA library screening, a full-length GABA-T cDNA (OsGABA-T) was isolated from rice (Oryza sativa) leaves infected with an incompatible race of Magnaporthe grisea. The deduced amino a...
journal_title：Journal of plant research
pub_type： 杂志文章
doi：10.1007/s10265-006-0018-3
更新日期：2006-11-01 00:00:00
abstract：:Recent progress in the study of cytokinin metabolism in plants indicates that quantitative analysis of cytokinin nucleotides is essential for elucidation of early steps of the biosynthetic pathway. However, traditional procedures for purification and quantification of cytokinin cannot discriminate the various nucleoti...
journal_title：Journal of plant research
pub_type： 杂志文章
doi：10.1007/s10265-003-0099-1
更新日期：2003-06-01 00:00:00
abstract：:Terrestrial green plants absorb photosynthetically active radiation (PAR; 400-700 nm) but do not absorb photons evenly across the PAR waveband. The spectral absorbance of photosystems and chloroplasts is lowest for green light, which occurs within the highest irradiance waveband of direct solar radiation. We demonstra...
journal_title：Journal of plant research
pub_type： 杂志文章,评审
doi：10.1007/s10265-017-0910-z
更新日期：2017-05-01 00:00:00
abstract：:Petal flavonoid compositions of 39 tree peony cultivars from Xibei (northwest China) were investigated in order to study the chemotaxonomic relationship among tree peony species. Six anthocyanins, the 3- O-glucosides and 3,5-di- O-glucosides of three anthocyanidins-pelargonidin (Pg), cyanidin (Cy), and peonidin (Pn)-e...
journal_title：Journal of plant research
pub_type： 杂志文章
doi：10.1007/s10265-003-0130-6
更新日期：2004-02-01 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：:The pollen morphology of two species of the Neotropical genus Ceratostema (Ericaceae) was examined by light, scanning and transmission electron microscopy. The Ceratostema species examined have 3-colporate pollen grains united in permanent tetrahedral tetrads that show a common condition encountered in the Ericaceae. ...
journal_title：Journal of plant research
pub_type： 杂志文章
doi：10.1007/s10265-006-0029-0
更新日期：2006-11-01 00:00:00
abstract：:Cyrtomium is an Asiatic genus characterized by anastomosing veins with included veinlets, and comprises about 40 species. We sequenced rbcL and trnL-F sequences of 19 species of Cyrtomium and eight species from related genera in order to elucidate a molecular phylogeny of the genus using maximum-parsimony methods. The...
journal_title：Journal of plant research
pub_type： 杂志文章
doi：10.1007/s10265-005-0201-y
更新日期：2005-04-01 00:00:00
abstract：:The post-Golgi traffic network in plant cells is highly complex, which is correlated with the large number of genes related to this function. RABs and SNAREs are key regulators of tethering and fusion of transport vesicles to target membranes, and the numbers of these regulators have also expanded in plant lineages. I...
journal_title：Journal of plant research
pub_type： 杂志文章
doi：10.1007/s10265-008-0200-x
更新日期：2009-01-01 00:00:00
abstract：:Duckweed is a kind of floating aquatic plant and increasing its starch production is favorable for bioenergy. In this study, we found that starch biosynthesis was greatly promoted by the supplement of nickel ion (Ni2+) through the comparison of other different ions. The starch content in duckweed was increased by near...
journal_title：Journal of plant research
pub_type： 杂志文章
doi：10.1007/s10265-020-01204-0
更新日期：2020-07-01 00:00:00
abstract：:During different environmental stress conditions, plant growth is regulated by the hormone abscisic acid (an apocarotenoid). In the biosynthesis of abscisic acid, the oxidative cleavage of cis-epoxycarotenoid catalyzed by 9-cis-epoxycarotenoid dioxygenase (NCED) is the crucial step. The NCED genes were isolated in num...
journal_title：Journal of plant research
pub_type： 杂志文章
doi：10.1007/s10265-015-0726-7
更新日期：2015-07-01 00:00:00
