scholarly journals Interactions between Axillary Branches of Arabidopsis

2008 ◽  
Vol 1 (2) ◽  
pp. 388-400 ◽  
Author(s):  
Veronica Ongaro ◽  
Katherine Bainbridge ◽  
Lisa Williamson ◽  
Ottoline Leyser
Keyword(s):  
Axillary Branches

Turnera fasciculifolia (Turneraceae, Passifloraceae s. l.): A New Species From the Jalapão Region, Tocantins, Brazil

2020 ◽  
Vol 45 (4) ◽  
pp. 833-838
Author(s):  
Lamarck Rocha ◽  
Patrícia Luz Ribeiro ◽  
Maria Mercedes Arbo
Keyword(s):  
New Species ◽  
Protected Area ◽  
Extrafloral Nectaries ◽  
Distribution Map ◽  
Central Brazil ◽  
Axillary Branches ◽  
Revolute Margin ◽  
A New Species

Abstract—We present a new species, Turnera fasciculifolia, from the Jalapão region, the largest continuous protected area of Cerrado in Tocantins State, in central Brazil. The new species belongs to Turnera series Leiocarpae, and it can be recognized by the linear ericoid leaves with revolute margin, generally without extrafloral nectaries, and the basal leaves of the young axillary branches gathered in fascicles. We provide a description, illustrations, a distribution map, and a comparison with T. genistoides and T. revoluta, which also have ericoid leaves.

scholarly journals Sedum formosanum subsp. miyakojimense (Crassulaceae), a new subspecies from Miyako-jima Island of the Ryukyu Islands, Japan

PhytoKeys ◽  
2020 ◽  
Vol 148 ◽  
pp. 51-70
Author(s):  
Takuro Ito ◽  
Chih-Chieh Yu ◽  
Masatsugu Yokota ◽  
Goro Kokubugata
Keyword(s):  
Phylogenetic Analyses ◽  
Taxonomic Status ◽  
The Other ◽  
Ryukyu Islands ◽  
Morphological Comparison ◽  
Molecular Analyses ◽  
New Subspecies ◽  
The Ryukyu Islands ◽  
Molecular Phylogenetic ◽  
Axillary Branches

We re-examined the taxonomic status of plants treated as Sedum formosanum (Crassulaceae) from Miyako-jima Island of the Ryukyu Islands, Japan, using morphological comparison and molecular phylogenetic analyses with related species. In morphology, plants from Miyako-jima Island bore a close resemblance to the other plants of S. formosanum, but differed in being perennial, polycarpic, and having lateral axillary branches. Molecular analyses based on ITS of nrDNA and six regions of cpDNA sequencing indicated that the Miyako-jima plants formed a distinct subclade. This subclade was part of a polytomy with three other subclades comprising nine taxa endemic to Taiwan and S. formosanum from other areas, including the type locality. Therefore, we propose and describe the Miyako-jima plants as a new subspecies, Sedum formosanum subsp. miyakojimense.

Cadaveric study identifying clinical sonoanatomy for proximal and distal approaches of ultrasound-guided intercostobrachial nerve block

2020 ◽  
Vol 45 (11) ◽  
pp. 853-859
Author(s):  
Artid Samerchua ◽  
Prangmalee Leurcharusmee ◽  
Krit Panjasawatwong ◽  
Kittitorn Pansuan ◽  
Pasuk Mahakkanukrauh
Keyword(s):  
Axillary Artery ◽  
Anatomical Variation ◽  
Intercostal Nerve ◽  
Cadaveric Study ◽  
Ultrasound Guided ◽  
Serratus Anterior ◽  
Adjacent Structures ◽  
Intercostobrachial Nerve ◽  
Inferior Border ◽  
Axillary Branches

Background and objectivesThe intercostobrachial nerve (ICBN) has significant anatomical variation. Localization of the ICBN requires an operator’s skill. This cadaveric study aims to describe two simple ultrasound-guided plane blocks of the ICBN when it emerges at the chest wall (proximal approach) and passes through the axillary fossa (distal approach).MethodsThe anatomical relation of the ICBN and adjacent structures was investigated in six fresh cadavers. Thereafter, we described two potential techniques of the ICBN block. The proximal approach was an injection medial to the medial border of the serratus anterior muscle at the inferior border of the second rib. The distal approach was an injection on the surface of the latissimus dorsi muscle at 3–4 cm caudal to the axillary artery. The ultrasound-guided proximal and distal ICBN blocks were performed in seven hemithoraxes and axillary fossae. We recorded dye staining on the ICBN, its branches and clinically correlated structures.ResultsAll ICBNs originated from the second intercostal nerve and 34.6% received a contribution from the first or third intercostal nerve. All ICBNs gave off axillary branches in the axillary fossa and ran towards the posteromedial aspect of the arm. Following the proximal ICBN block, dye stained on 90% of all ICBN’s origins. After the distal ICBN block, all terminal branches and 43% of the axillary branches of the ICBN were stained.ConclusionsThe proximal and distal ICBN blocks, using easily recognized sonoanatomical landmarks, provided consistent dye spread to the ICBN. We encourage further validation of these two techniques in clinical studies.

scholarly journals Multi-level analysis of the interactions between REVOLUTA and MORE AXILLARY BRANCHES 2 in controlling plant development reveals parallel, independent and antagonistic functions

Development ◽  
2020 ◽  
Vol 147 (10) ◽  
pp. dev183681 ◽  
Author(s):  
Shin-Young Hong ◽  
Esther Botterweg-Paredes ◽  
Jasmin Doll ◽  
Tenai Eguen ◽  
Anko Blaakmeer ◽  
...  
Keyword(s):  
Plant Development ◽  
Multi Level ◽  
Axillary Branches ◽  
Level Analysis

scholarly journals Impact of Different Phytohormones on Morphology, Yield and Cannabinoid Content of Cannabis sativa L.

Plants ◽  
2020 ◽  
Vol 9 (6) ◽  
pp. 725 ◽  
Author(s):  
Lisa Burgel ◽  
Jens Hartung ◽  
Daniele Schibano ◽  
Simone Graeff-Hönninger
Keyword(s):  
Plant Height ◽  
Plant Architecture ◽  
Biomass Yield ◽  
Cannabis Sativa ◽  
Unit Area ◽  
Branch Length ◽  
Specific Level ◽  
Total Plant ◽  
The Impact ◽  
Axillary Branches

The impact of exogenously applied plant growth regulators (PGR), 1-naphthalenaecetic acid (NAA), 6-benzylaminopurine (BAP), and a mixture of both (NAA/BAP-mix), was investigated in regard to plant height, length of axillary branches, number of internodes, biomass yield and cannabinoid content of three different phytocannabinoid-rich (PCR) Cannabis genotypes. The results showed that total plant height was significantly reduced under the application of NAA (28%), BAP (18%), and NAA/BAP-mix treated plants (15%). Axillary branch length was also significantly reduced by 58% (NAA) and 30% (NAA/BAP-mix). BAP did not significantly reduce the length of axillary branches. The number of internodes was reduced by NAA (19%), BAP (10%), and the NAA/BAP-mix (14%) compared to the untreated control. NAA application influenced the plant architecture of the tested cv. KANADA beneficially, resulting in a more compact growth habitus, while inflorescence yield (23.51 g plant−1) remained similar compared to the control (24.31 g plant−1). Inflorescence yield of v. 0.2x and cv. FED was reduced due to PGR application while cannabinoid content remained stable. Overall, the application of PGR could be used on a genotype-specific level to beneficially influence plant architecture and optimize inflorescence yield per unit area and thus cannabinoid yield, especially in the presence of space limitations under indoor cultivation.

La placentation axillaire chez Ochna atropurpurea

1979 ◽  
Vol 57 (2) ◽  
pp. 100-107 ◽  
Author(s):  
Fernand Pauzé ◽  
Rolf Sattler
Keyword(s):  
Logical Consequence ◽  
Floral Apex ◽  
The Cross ◽  
Axillary Branches

In Ochna atropurpurea DC., five to seven crescent-shaped gynoecial primordia are formed. They become continuous with each other soon after their inception and thus form a syncarpous gynoecium whose final appearance is pseudoapocarpous (ecological apocarpy). There are as many ovules as gynoecial primordia. Each ovule arises from the biseriate tunica and the corpus on the periphery of the floral apex in the axil of a gynoecial primordium. The presence of across zone (Querzone) could not be clearly demonstrated. Since the position of ovule inception is equivalent (homotopous) to that of axillary branches, we propose to term this configuration axillary placentation. If it is agreed upon that axillary branches arise from the stem (caulome), then the axillary placentation of this species is also of cauline origin. It then follows as a logical consequence that the gynoecium is acarpellate. Whether this acarpellate condition is primitive or derived from a carpellate organization remains unresolved. In the case of a derivation from a carpellate gynoecium, one would have to postulate a phylogenetic shifting of ovule inception and (or) the reduction of the adaxial portion of a carpel whose margins were confluent and thus formed a more or less cylindrical primordium. Congenital or phylogenetic fusion of the cross zone of a peltate carpel with the floral apex is not even a theoretically possible hypothesis since it is not in agreement with any conceivable ontogenetic and phylogenetic processes.

scholarly journals Growth of Euphorbia pulcherrima and Pelargonium ×hortorum in Shredded Rubber-containing Substrates

HortScience ◽  
1996 ◽  
Vol 31 (4) ◽  
pp. 657e-657
Author(s):  
Michael R. Evans ◽  
Andrew A. Waber
Keyword(s):  
Euphorbia Pulcherrima ◽  
Fresh Weight ◽  
Axillary Shoots ◽  
Shoot Fresh Weight ◽  
Sphagnum Peat ◽  
Axillary Branches ◽  
Weight Number

Euphorbia pulcherrima `Freedom' (poinsettia) and Pelargonium ×hortorum `Pink Elite' (geranium) were grown in 75:25:0, 50:50:0, 27:75:0, 75:0:25 50:0:50, 25:0:75 (v/v sphagnum peat: 0.25-grade rubber: 0.10-grade rubber) substrates or in a 50 sphagnum peat: 30 perlite: 20 loam (v/v) standard greenhouse substrate. Geranium root and shoot fresh weights, height, and number of axillary shoots were reduced when grown in rubber-containing substrates compared to plants grown in the standard control. As the proportion of either grade of rubber increased, root and shoot fresh weights, height, and number of axillary shoots decreased. Flowering in geranium was delayed and the number of inflorescences reduced as the proportion of the 0.10-grade rubber increased. Plants grown in the 0.25-grade rubber failed to flower by the termination of the experiment. Poinsettia plants grown in rubber-containing substrates had reduced shoot fresh weight, height, number of bracts, and bract area compared to plants grown in the standard control. As the proportion of either grade of rubber increased, height, shoot fresh weight, number of bracts, and bract area decreased. Number of axillary branches was reduced in substrates containing 50% and 75% of the 0.10-grade rubber. Days to anthesis was unaffected by substrate.

Climate, Grazing and Disturbance, and the Population Dynamics of Leucochrysum albicans at Ross, Tasmania

1994 ◽  
Vol 42 (4) ◽  
pp. 417 ◽  
Author(s):  
L Gilfedder ◽  
JB Kirkpatrick
Keyword(s):  
Population Dynamics ◽  
High Mortality ◽  
Seedling Establishment ◽  
Rare Species ◽  
The Future ◽  
Axillary Branches ◽  
Adult Plants

A population of an endangered daisy, Leucochrysum albicans (syn. Helipterum albicans), was monitored monthly in grazed and ungrazed plots for several years in a paddock near Ross, Tasmania. The population declined dramatically during the extremely dry summer of 1987, and also experienced high mortality in the dry summer of 1988. Adult plants and germinates were more abundant in grazed than in ungrazed plots for most of the period after this decline. The development of axillary branches on adult plants was much more prominent outside than inside the exclosures. Seedling establishment preferentially occurred on ground dominated by herbs, with establishment being low and extremely brief on grass-covered ground. The frequently disturbed margins of the exclosures were the most favourable sites for establishment of new individuals. The future of this unpalatable rare species seems to be dependent upon management that maintains open and, preferably, disturbed ground.

Import and unloading of 14C assimilate into mature leaves of Coleus blumei

1985 ◽  
Vol 63 (10) ◽  
pp. 1700-1707 ◽  
Author(s):  
David G. Fisher ◽  
Walter Eschrich
Keyword(s):  
Shoot Tips ◽  
Mature Leaf ◽  
Mature Leaves ◽  
Coleus Blumei ◽  
Low Concentrations ◽  
Axillary Branches

Mature leaves of Coleus blumei Benth. were tested for their ability to import 14C assimilate, to unload and metabolize it, and to transfer it to the mesophyll. To enhance the potential for import, plants were preconditioned by removal of shoot tips and axillary branches, by 48 h of darkness, and by removal of roots. One mature leaf on each plant was isolated in a CO2-free chamber and kept in the light or dark while the rest of the plant was exposed for 5 h to light and 7.4 MBq 14CO2, followed by 7 h of 12CO2. Autoradiographs showed that label imported into sink leaves exposed to the light was most concentrated in the major veins, but that considerable activity also occurred in the mesophyll at the base of the lamina and adjacent to the major veins. In general, sink leaves kept in the dark imported much less label, but in one case mesophyll labeling was observed in such a leaf. Microautoradiography of sink leaf midveins indicated that 14C was always translocated in the phloem. Low concentrations of sucrose and glucose accumulated in intercostal regions of both lighted and darkened sink leaves within 12 h of plant illumination. Chromatography of intercostal areas of the sink leaves showed that the imported assimilate was unloaded and metabolized into a number of other compounds, which indicates that mature leaves of Coleus can be converted into genuine sinks.

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