Trichomes in arabidopsis. Medical search. Frequent questions

Quantitative real-time PCR (RT-qPCR) analysis revealed that the expression levels of auxin-related genes and positive regulators of trichome development in the lhl1 mutant were down-regulated compared with the WT. (chinaagrisci.com)

Some defining features include the following: Unicellular or multicellular Straight (upright with little to no branching), spiral (corkscrew-shaped) or hooked (curved apex) Presence of cytoplasm Glandular (secretory) vs. eglandular Tortuous, simple (unbranched and unicellular), peltate (scale-like), stellate (star-shaped) Adaxial vs. abaxial, referring to whether trichomes are present, respectively, on the upper surface (adaxial) or lower surface (abaxial) of a leaf or other lateral organ. (wikipedia.org)
However, studies on plant trichomes are largely limited to some major vegetable or cash crops and model species with large glandular trichomes (e.g. (benthamopen.com)
Our experiments showed that camptothecins (CPTs) are primarily accumulated in glandular trichomes in Camptotheca. (benthamopen.com)
d Background and aims Much recent study of plant trichomes has focused on various aspects of glandular secreting trichomes (GSTs) and differentiation of simple trichomes. (ukzn.ac.za)
In tobacco, both simple and glandular multicellular trichomes are found. (biologists.com)
Trichomes can comprise of a single cell or can be multicellular and can be glandular or non-glandular. (pharmaseeds.io)
Ranging in size from a few micrometres (1 micrometre is 1000 times smaller than a millimetre) to centimetres, single-celled trichomes are often non-glandular and, unlike their glandular multi-celled counterparts, do not produce specialised metabolites (Payne 1978, Wagner 1991). (pharmaseeds.io)
It could be argued that over fruits, seeds, roots, bark, leaves and the rest of the enormously diverse range of harvestable plant parts, those glandular trichomes are the most interesting/diverse in chemical composition and could be described as secondary metabolite production factories (Wagner et al. (pharmaseeds.io)
In cannabis plants, glandular trichomes are typically found in 3 different forms based on their surface morphologies: bulbous, sessile and stalked (figure 1) (Hammond & Mahlberg 1973). (pharmaseeds.io)
2017). In other species, it has been demonstrated that each type of glandular trichome produces specific specialised metabolites and that the different morphologies are associated with variation in the metabolites, but the chemical composition also depends on which part of the plant the trichome is located, for example, vegetative leaf versus inflorescence (Hammond & Mahlberg 1991). (pharmaseeds.io)
has brought new insights and information to the chemical composition of glandular trichomes. (pharmaseeds.io)
Cross section diagram (unscaled) of the glandular trichome types of the Cannabis plant. (pharmaseeds.io)

Trichome of Arabidopsis thaliana seen through scanning electron microscope. (kikfordesktop.com)

While GL1 and TTG control the commitment to trichome formation, the TRY gene product functions after cell commitment but before cell morphogenesis to limit the number of cells responding to the initial signal. (biologists.com)
Link to all annotated objects annotated to trichome morphogenesis. (planteome.org)
Link to all direct and indirect annotations to trichome morphogenesis. (planteome.org)

A common type of trichome is a hair. (wikipedia.org)
Another common type of trichome is the scale or peltate hair, that has a plate or shield-shaped cluster of cells attached directly to the surface or borne on a stalk of some kind. (wikipedia.org)
There has been debate over whether sessile and stalked trichomes are simply immature/mature versions of the same type of trichome or are of their own class (Dayanandan & Kaufman 1976, Livingston et al. (pharmaseeds.io)

In a model organism, Cistus salviifolius, there are more adaxial trichomes present on this plant because this surface suffers from more ultraviolet (UV), solar irradiance light stress than the abaxial surface. (wikipedia.org)
Heterologous expression of rty induced IAA accumulation and increased the production of adventitious roots as well as trichomes on the abaxial leaf surface of the transgenic plants. (authorea.com)
Differential regulation of trichome formation on the adaxial and abaxial leaf surfaces by gibberellins and photoperiod in Arabidopsis thaliana (L.) Heynh. (chinaagrisci.com)

Previously we identified a novel single-repeat MYB transcription factor, TRICHOMELESS1 (TCL1), which negatively regulates trichome formation on the inflorescence stems and pedicels by directly suppressing the expression of GL1 . (biomedcentral.com)

Leaf trichomes can protect plants against herbivory and drought, but can be costly to produce. (diva-portal.org)
Polymerized actin localization in wild type (left) and mutant (right) Arabidopsis thaliana leaf trichomes during the transition to branch elongation. (cellimagelibrary.org)

Branched hairs can be dendritic (tree-like) as in kangaroo paw (Anigozanthos), tufted, or stellate (star-shaped), as in Arabidopsis thaliana. (wikipedia.org)
The understanding of epidermal cell determination is greatest for trichomes (hairs) in Arabidopsis . (biologists.com)
Trichomes of most other flowering plants include multicellular hairs, and little is known of the developmental genetics governing their specification. (biologists.com)
A representative example of this correlation is found in Arabidopsis leaf hairs (trichomes). (ap26113.com)

Although over expressing any of these six single-repeat R3 transcription factors in Arabidopsis causes a glabrous phenotype, single mutants of these genes have different phenotypes. (biomedcentral.com)
Genes in the Regulation of Trichome Formation in Arabidopsis. (bvsalud.org)
We report here the identification of two abscisic acid (ABA) responsive genes , SMALLER TRICHOMES WITH VARIABLE BRANCHES (SVB) and SVB2 as trichome formation regulator genes in Arabidopsis . (bvsalud.org)
Our results suggest that SVB and SVB2 are ABA responsive genes , and SVB and SVB2 function redundantly to regulate trichome formation in Arabidopsis . (bvsalud.org)
The Arabidopsis genome contains an estimated 340,000 potential MADS binding sites ( de Folter and Angenent, 2006 ), leading to the intriguing question: What is the biological significance of the large number of potential MADS binding sites, and how many target genes do MADS proteins really regulate? (frontiersin.org)
The Arabidopsis Athb-8,-9 and-14 genes are members of a small gene family coding for highly related HD-ZIP proteins[J]. Plant Molecular Biology,1998,38(4):609-622. (nefu.edu.cn)
6. Olsson A S,Engstr m P,S derman E. The homeobox genes ATHB12 and ATHB7 encode potential regulators of growth in response to water deficit in Arabidopsis [J]. Plant Molecular Biology,2004,55(5):663-677. (nefu.edu.cn)
The transparent testa and other Arabidopsis seed color mutants have greatly accelerated the cloning of genes in the PA biosynthetic pathway and understanding spatiotemporal regulation of flavonoid production. (usda.gov)

It was proposed that single-repeat MYBs negatively regulate trichome formation by competing with GLABRA1 (GL1) for binding GLABRA3/ENHANCER OF GLABRA3 (GL3/EGL3), thus inhibiting the formation of activator complex TTG1(TRANSPARENT TESTA GLABRA1)-GL3/EGL3-GL1 that is required for the activation of GLABRA2 ( GL2 ), whose product is a positive regulator of trichome formation. (biomedcentral.com)
Here, we report that also a newly discovered mechanism is involved by which patterning is governed by the removal of the trichome-promoting factor TRANSPARENT TESTA GLABRA1 (TTG1) from non-trichome cells. (mpg.de)

Abstract The trichomes of rice leaves are formed by the differentiation and development of epidermal cells. (chinaagrisci.com)
GLABROUS INFLORESCENCE STEMS modulates the regulation by gibberellins of epidermal differentiation and shoot maturation in Arabidopsis. (chinaagrisci.com)

Overexpression of TCL2 conferred glabrous phenotype while knockdown of TCL2 via RNAi induced ectopic trichome formation on the inflorescence stems and pedicels, a phenotype that was previously observed in tcl1 mutants. (biomedcentral.com)
To study the potential of the observed trapping/depletion mechanism, we formulated a mathematical model enabling us to evaluate the relevance of each parameter and to identify parameters explaining the paradoxical genetic finding that strong ttg1 alleles are glabrous, while weak alleles exhibit trichome clusters. (mpg.de)
glabrous throughout or sparsely to moderately pubescent, trichomes simple and short-stalked, forked, (to 0.5 mm). (semanticfna.org)

Protein profiling of single epidermal cell types from Arabidopsis thaliana using surface-enhanced laser desorption and ionization technology. (mpg.de)

Expression of this gene throughout transgenic tobacco plants leads to excess numbers of multicellular trichomes on leaves and floral organs as well as the novel production of conical cells on leaves. (biologists.com)
D) Scanning electron micrograph of standard small and underbranched trichomes at the same magnification as with (C). (E) Scanning electron micrograph of clustered and multicellular trichomes. (ap26113.com)

We quantified variation in tolerance to drought and defoliation, and tested the hypotheses that (a) tolerance is associated with cost, (b) leaf trichome production increases tolerance to drought, and (c) trichome production is increased in response to defoliation and drought stress in Arabidopsis lyrata (Brassicaceae). (diva-portal.org)

Cell-specific protein profiling in Arabidopsis thaliana trichomes: identification of trichome-located proteins involved in sulfur metabolism and detoxification. (mpg.de)
A) Growth phenotype of two Arabidopsis accessions, Landsberg and Doñana, at 21 and 28 °C. B) Genetic diversity (as haplotype network) of ICA2 proteins from worldwide accessions of Arabidopsis thaliana and A. lyrata . (csic.es)
ARPs, actin-related proteins) exist between different lineages, they are active in specific processes such as growth, cancer metastasis and trichome development in yeast, human and Arabidopsis, respectively. (ugent.be)
2. Schena M,Davis R W. HD-Zip proteins:members of an Arabidopsis homeodomain protein superfamily[J]. Proceedings of the National Academy of Sciences of the United States of America,1992,89(9):3894-3898. (nefu.edu.cn)

Wild-type trichomes undergo approximately four rounds of endoreduplication, leading to a DNA content material of 32C (32-collapse the DNA content material of the haploid genome) per cell. (ap26113.com)

In addition to the trichome defects reported previously for the svb single mutant, we found that even though the trichome numbers were largely unaffected in both the svb and svb2 single mutants generate by using CRISPR /Cas9 gene editing , the trichome numbers were greatly reduced in the svb svb2 double mutants. (bvsalud.org)
RT-PCR results show that the expression of the trichome formation key regulator gene ENHANCER OF GLABRA3 (EGL3) was affected in the svb svb2 double mutants. (bvsalud.org)
The 'distorted group' of trichome morphology mutants were or. (cellimagelibrary.org)
In general, mutants with smaller trichomes were found to contain less DNA, whereas an increase in trichome cell size was correlated positively with additional endoreduplication rounds (Hulskamp et al. (ap26113.com)

Many terms are used to describe the surface appearance of plant organs, such as stems and leaves, referring to the presence, form and appearance of trichomes. (wikipedia.org)

Although its primary role in basic research has been overshadowed by the more "user-friendly" model species Arabidopsis thaliana , barley retains some peculiar features and has great potential for basic research studies. (mdpi.com)

It is known that some plant secondary metabolites may accumulate in trichomes which can protect plants from damage by herbivores. (benthamopen.com)
Most people in the cannabis industry know that high-value secondary metabolites, cannabinoids & terpenes, are produced and stored via resin glands known as trichomes - a hair-like protrusion found on leaves calyx, inflorescence, stem and stocks of female plants. (pharmaseeds.io)
Stinging nettle uses a specialised trichome to inject secondary metabolites into the skin of any animal that comes into contact with it. (pharmaseeds.io)

Plant trichomes have many different features that vary between both species of plants and organs of an individual plant. (wikipedia.org)
Trichomes on plants are epidermal outgrowths of various kinds. (wikipedia.org)
Trichome formation in Arabidopsis is regulated by several key regulators, and plants hormones such as gibberellin , salicylic acid , jasmonic acid and cytokinins have been shown to regulate trichome formation by affecting the transcription or activities of the key regulators. (bvsalud.org)
On the other hand , trichome numbers were increased in SVB or SVB2 overexpression plants . (bvsalud.org)
For annual plants, such as Arabidopsis thaliana , proper determination of the flowering time is critical for plant reproductive success because a switch from vegetative to reproductive development is irreversible. (biomedcentral.com)
Here, we heterologously expressed Arabidopsis rty in strawberry plants and examined the effects of rty expression on the hormonal and physiological properties of the plants. (authorea.com)
Inducible chemical defenses of plants have received much attention in the last three decades, and these defenses often involve trichomes. (benthamopen.com)
In fact, the existing studies on the effect of damage (pruning or defoliation) on trichome density or chemical production in plants are partial and even contradictory. (benthamopen.com)
2005). Many plants hold important and novel chemical 'secrets' in their trichomes, from essential oils & pharmaceutical components to nepetalactone - the active ingredient in catnip - and neurotransmitters, a range of which are produced by nettle stings (Schilmiller et al. (pharmaseeds.io)

Phenotypic analysis led to the screening of a mutant that is defective in trichome development, designated lhl1 ( less hairy leaf 1 ). (chinaagrisci.com)
The leaves of the LHL1 -RNAi lines showed the same trichome developmental defects as the lhl1 mutant, whereas the trichome morphology on the leaf surface of the LHL1 -OE lines was similar to that of the WT, although the number of trichomes was significantly higher. (chinaagrisci.com)
This line has similarity with the banyuls (ban) mutant of Arabidopsis in which anthocyanidin reductase is inactive, leading to increased anthocyanin accumulation in the seed coat. (usda.gov)

The MYB80 transcription factor is required for pollen development and the regulation of tapetal programmed cell death in Arabidopsis thaliana . (edu.au)
We analyzed gene expression during Arabidopsis thaliana meristem development under long day conditions from day 7 to 16 after germination in one-day increments. (biomedcentral.com)
Because trichomes are visible to the naked eye and can be much more easily targeted and measured than CPTs, the term "Trichome Management" is used for strategy development to induce CPTs in Camptotheca. (benthamopen.com)
However, the development of rice trichomes remains poorly understood. (chinaagrisci.com)
The results indicate that the influence of LHL1 on trichome development in rice leaves may be associated with an auxin pathway. (chinaagrisci.com)
The tomato SlIAA15 is involved in trichome formation and axillary shoot development. (chinaagrisci.com)
ClassⅢ homeodomain-leucine zipper gene family members have overlapping,antagonistic,and distinct roles in Arabidopsis development[J]. The Plant Cell,2005,17(1):61-76. (nefu.edu.cn)
These results indicate that AtMYB103 is a crucial regulator of Arabidopsis anther development. (gao-lab.org)

Mutation of Arabidopsis thaliana ROOTY ( RTY ) results in increased endogenous auxin levels and root and shoot growth, but the effects of this gene in strawberry remain unclear. (authorea.com)
The HAT2 gene,a member of the HD-Zip gene family,isolated as an auxin inducible gene by DNA microarray screening,affects auxin response in Arabidopsis [J]. The Plant Journal,2002,32(6):1011-1022. (nefu.edu.cn)

Here we address the posttranslational regulation of INHIBITOR/INTERACTOR OF CDK 1 (ICK1)/KIP RELATED PROTEIN 1 ( KRP1), an Arabidopsis ( Arabidopsis thaliana) CDK inhibitor. (uni-bielefeld.de)

Negatively regulates trichome endoreduplication and trichome branching (PubMed:12848824). (gao-lab.org)

The results suggest that there is genetic variation in tolerance to drought in the study population, that tolerance to drought is associated with a cost, and that trichome production does not increase tolerance to drought in A. lyrata . (diva-portal.org)

HOMEODOMAIN PROTEIN8 mediates jasmonate-triggered trichome elongation in tomato. (chinaagrisci.com)

We analyzed here the role of TRICHOMELESS2 (TCL2), a previously-uncharacterized single-repeat MYB transcription factor in trichome patterning in Arabidopsis . (biomedcentral.com)
According to gene annotations in Arabidopsis thaliana, the functions of HD-Zip transcription factor in poplarwere predicted.The conserved domains, structural characteristics and chemical properties of HD-Zip family members were also studied by bioinformatics, providing reference for gene functions of HD-Zip family in poplar. (nefu.edu.cn)

We are dissecting the genetic variation in the model annual plant Arabidopsis thalianain nature. (csic.es)
Genetic dissection of natural variation for stomatal abundance traits in Arabidopsis. (csic.es)
To address this question we are exploiting the genetic variation that exists in nature within the wild, annual, and model plant Arabidopsis thaliana . (csic.es)

In particular, we are interested in understanding how developmental traits, such as flowering time, vegetative growth, or trichome patterning, enable plant adaptation. (csic.es)
These data indicate that conical cells and trichomes are produced by a common developmental pathway. (biologists.com)

2019). The stalked and sessile types are anatomically analogous to those found in other species and are known as Peltate trichomes, which are similar to the sessile type, and Capitate trichomes, which are similar to the stalked type (Potter 2009, Glas et al. (pharmaseeds.io)

The 'distorted group' of trichome morphology mutan. (cellimagelibrary.org)

We demonstrate by clonal analysis and misexpression studies that Arabidopsis TTG1 can act non-cell-autonomously and by microinjection experiments that TTG1 protein moves between cells. (mpg.de)

Tolerance to drought varied among families and was inversely related to leaf size, but was not related to trichome density. (diva-portal.org)

Quantitative expression analysis of selected transcription factors in pavement, basal and trichome cells of mature leaves from Arabidopsis thaliana. (mpg.de)
A competitive complex formation mechanism underlies trichome patterning on Arabidopsis leaves. (mpg.de)
Histochemical staining assays demonstrated that AaDXS2 was mainly expressed in the trichomes of Arabidopsis leaves. (jeanpagnier.fr)

Trichomes can protect the plant from a large range of detriments, such as UV light, insects, transpiration, and freeze intolerance. (wikipedia.org)
In modern botany, trichomes are better described as an extended outgrowth or appendage on the epidermal/surface layer of the aerial parts of a plant. (pharmaseeds.io)
Aside from a well-established and nascent range of high-value chemicals, trichomes are important in other plant functions, such as transpiration and water use efficacy, due to the fact trichomes tend to be highly hydrophobic (water repelling) ( Fahn 1986 ). (pharmaseeds.io)
Plant trichomes play an important role in stress resistance and protection against direct ultraviolet irradiation. (chinaagrisci.com)
Analysis of the subcellular localization, function, and proteolytic control of the Arabidopsis cyclin-dependent kinase inhibitor ICK1/KRP1", Plant Physiology , vol. 141, 2006, pp. 1293-1305. (uni-bielefeld.de)
Characterization of the class Ⅳ homeodomain-leucine zipper gene family in Arabidopsis [J]. Plant Physiology,2006,141(4):1363-1375. (nefu.edu.cn)

The B. oleracea being closest to Arabidopsis thaliana is considered an important Brassica species to study polyploidy 8 . (nature.com)
Results: In this study, we have developed a computational method that exploits the existing knowledge on protein-protein interactions in diverse species through orthologous relations on the one hand, and functional association data on the other hand to predict and filter protein-protein interactions in Arabidopsis thaliana. (ugent.be)

Trichome production was not induced by defoliation or drought stress. (diva-portal.org)

These results suggested that TCL2 may have overlapping function with TCL1 in controlling trichome formation on inflorescences. (biomedcentral.com)
TCL2 function redundantly with TCL1 in controlling trichome formation on inflorescences, but they are not fully functional equivalent. (biomedcentral.com)

These vibrational responses of Arabidopsis trichomes support the hypothesis that trichomes respond acoustically to vibrations associated with feeding caterpillars. (plantbehavior.org)

Trichome patterning in Arabidopsis serves as a model system to study how single cells are selected within a field of initially equivalent cells. (mpg.de)
While TTG1 is expressed ubiquitously, TTG1-YFP protein accumulates in trichomes and is depleted in the surrounding cells. (mpg.de)
Gene expression profiling of single epidermal, basal and trichome cells of Arabidopsis thaliana. (mpg.de)
Arabidopsis trichomes (hair cells) respond to mechanical stimuli by initiating potential signaling factors in themselves and in the neighboring cells. (plantbehavior.org)

Single-repeat R3 MYB transcription factors (single-repeat MYBs) play important roles in controlling trichome patterning in Arabidopsis . (biomedcentral.com)

Until recently, in cannabis, it has remained unclear what contribution each trichome type provides to each cannabinoid and terpene levels. (pharmaseeds.io)

Anatomy37

Organisms50

Diseases2

Chemicals and Drugs71

Analytical, Diagnostic and Therapeutic Techniques and Equipment17

Psychiatry and Psychology1

Phenomena and Processes76

Technology, Industry, Agriculture9

Information Science4

Health Care2

Regulators of trichome development1

Glandular12

Thaliana seen1

Morphogenesis3

Type of trichome3

Abaxial3

Regulates trichome formation1

Leaf trichomes2

Hairs4

Genes8

TRANSPARENT TESTA GLABRA12

Differentiation2

Glabrous3

Single epidermal cell1

Multicellular trichomes2

Brassicaceae1

Proteins4

Genome1

Mutants4

Stems1

Model species1

Secondary metabolites3

Plants9

Mutant3

Development8

Auxin2

Regulation1

Negatively1

Lyrata1

Elongation1

Transcription factor2

Genetic3

Developmental2

Peltate1

Morphology1

Misexpression1

Density1

Leaves3

Plant6

Species2

Defoliation1

Formation2

Responses1

Cells4

Roles1

Unclear1