Surface wax, a new taxonomic feature in Plagiochilaceae

2000 ◽  
Vol 225 (1-4) ◽  
pp. 225-233 ◽  
Author(s):  
J. Heinrichs ◽  
H. Anton ◽  
S. R. Gradstein ◽  
R. Mues ◽  
I. Holz
Keyword(s):  
Surface Wax ◽  
Taxonomic Feature

scholarly journals New And Neglected Morphological Features in the Taxonomy of Asian Lejeunea (Marchantiophyta)

2014 ◽  
Vol 59 (1) ◽  
pp. 31-36 ◽  
Author(s):  
Gaik Ee Lee ◽  
Ahmad Damanhuri ◽  
Abdul Latiff ◽  
S. Robbert Gradstein
Keyword(s):  
Morphological Feature ◽  
Morphological Characters ◽  
Species Level ◽  
Morphological Features ◽  
Phenetic Analysis ◽  
Infrageneric Classification ◽  
Surface Wax ◽  
Taxonomic Feature ◽  
Large Genus

Abstract The infrageneric classification of the large genus Lejeunea Lib. is poorly understood due to the lack of stable morphological characters characterizing supraspecific groups. Phenetic analysis of 26 morphological features of 31 Asian Lejeunea species separated two main species clusters based on the number of superior central cells at underleaf bases. The number of superior central cells had not previously been utilized in the classification of Lejeunea and appears to be new and stable morphological feature within this genus. The presence of surface wax was confirmed in L. flava (Sw.) Nees and was newly recorded in L. mimula Hürl. and L. tuberculosa Steph. We suggest that wax ornamentation may be a useful taxonomic feature at species level in Lejeunea.

Memoirs: On Some Remarkable New Monticellia-Like and Other Cestodes from Sudanese Siluroids

1925 ◽  
Vol s2-69 (276) ◽  
pp. 703-729
Author(s):  
W. N. F. WOODLAND
Keyword(s):  
New Species ◽  
Taenia Solium ◽  
Broad Band ◽  
The Other ◽  
Taenia Saginata ◽  
New Genera ◽  
The Third ◽  
New Family ◽  
Taxonomic Feature ◽  
A New Species

1. Those species of Proteocephalid Cestodes in which the testes are situated in the cortex may be described as of the Monticellia type. Of this type there are three conditions : (a) the Monticellia condition in which the testes, uterus, ovary, and vitellaria are all situated in the cortex; (b) the Rudolphiella condition in which the testes and vitellaria alone are in the cortex, the other organs being entirely or almost entirely in the medulla ; and (c) the Marsypocephalus condition in which the testes alone are in the cortex, all other organs being medullary. Fuhrmann's genus Goezeella is synonymous with Monticellia if we ignore the characters of the scolex as features of generic value. 2. The anatomy of two species of Marsypocephalus is described: Marsypocephalus rectangulus Wedl, 1862, and Marsypocephalus heterobranchus, n.sp., from Nile Siluroid fishes. 3. It is concluded that the cortical situation of the testes and other organs is a taxonomic feature of generic value only (as in Pseudophyllidea in the case of the vitellaria) and La Rue's new family of the Monticellidae, created to include Monticellia-like forms, is not accepted. Monticellia, Rudolphiella, and Marsypocephalus are thus regarded as new genera in the Proteocephalidae. 4. The facts that the ‘Corallobothrium’ type of scolex is found in all of the three genera Monticellia (as amended by me and including ‘Goezeella’ siluri, Fuhrmann), Rudolphiella, and Proteocephalus (as amended by me and including ‘Corallobothrium’ solidum, Fritsch), and that in the Caryophyllaeidae, Bothriocephalidae, and Cyclophyllidea (cf. e.g. Taenia solium and Taenia saginata) minor scolex characters are evidently only features of specific value, compel us to delete such genera as Corallobothrium, Choanoscolex, Acanthotaenia, and my own recent genus Gangesia and to regard them as synonyms of Proteocephalus (La Rue's genus ‘Ophiotaenia’, syn. ‘Crepidobothrium’, not being accepted). Fuhrmann's Goezeella siluri becomes Monticellia siluri, and Fritach's Corallobothrium solidum becomes Proteocephalus solidus. The genera of the Proteocephalidae are thus four in number: Proteocephalus , Monticellia, Rudolphiella , and Marsypocep, halus, and these are formally or informally redefined. The two species of Marsypocephalus are diagnosed. 5. The ‘Taenia malopteruri’ of Fritsch, 1886, is not of the Monticellia type, as suggested by La Rue. Its structure is of the usual Proteocephalid type, save that the scolex possesses a rostellum and a broad band of hooklets and is covered with spinelets. It is renamed Proteocephalus malopteruri. 6. A new species of Clestobothrium--Clestobothrium clarias, from Clarias anguillaris Günth-is described. It is of interest, not only as being the third (second ?) species known of the genus, but because it affords one more illustration of the fact that the characters of the scolex cannot be used for diagnoses of genera. For this reason also, Lönnberg's genus Ptychobothrium (1889) becomes synonymous with Diesing's genus Polyonchobothrium (1884).

Tribological research of leaf-surface wax derived from plants of Pinaceae

2018 ◽  
Vol 31 (1-2) ◽  
pp. 1-10 ◽  
Author(s):  
Xin Feng ◽  
Yichao Hu ◽  
Yanqiu Xia
Keyword(s):  
Leaf Surface ◽  
Surface Wax ◽  
Leaf Surface Wax

scholarly journals Individual and Interactive Temporal Implications of UV-B Radiation and Elevated CO2 on the Morphology of Basil (Ocimum basilicum L.)

Horticulturae ◽  
2021 ◽  
Vol 7 (11) ◽  
pp. 474
Author(s):  
T. Casey Barickman ◽  
Skyler Brazel ◽  
Akanksha Sehgal ◽  
C. Hunt Walne ◽  
Wei Gao ◽  
...  
Keyword(s):  
Elevated Co2 ◽  
Plant Morphology ◽  
Dry Mass ◽  
Root Surface ◽  
Morphological Features ◽  
Fresh Mass ◽  
Interactive Effects ◽  
Root Surface Area ◽  
Surface Wax ◽  
Radiation Treatments

Temporal and spatial variations in ozone levels and temporal changes in solar radiation greatly influence ultraviolet radiation incidence to crops throughout their growth, yet the interactive effects of CO2 and UV-B radiation on Basil production under sunlight environmental conditions has not been studied. Basil ‘Genovese’ plants grown under sunlit plant growth chambers were subjected to a combination of supplemental UV-B (0 and 10 kJ m−2d−1) and ambient (420 ppm) and elevated (720 ppm) CO2 treatments for 38 days after 14 days of germination. UV-B radiation treatments caused a decrease in basil stem branching, fresh mass, and stem dry mass under both CO2 treatments when harvested after 17 and 38 days of treatment. There was also an increase in basil leaf surface wax under UV-B (10 kJ m−2d−1) treatment compared to controls (0 kJ m−2d−1). Elevated CO2 treatments caused a decrease in morphological features, including specific leaf area and fresh mass. Interactive effects between UV-B and CO2 treatments existed for some morphological features, including plant height, root surface area, and average root diameter. Understanding the impacts that CO2 and UV-B radiation treatments have on basilcan improve existing varieties for increased tolerance while simultaneously improving yield, plant morphology, and physiology.

scholarly journals Leaf Surface Wax as a Possible Resistance Factor of Barley to Cereal Aphids

1989 ◽  
Vol 24 (3) ◽  
pp. 295-301 ◽  
Author(s):  
Hisaaki TSUMUKI ◽  
Katsuo KANEHISA ◽  
Kazuo KAWADA
Keyword(s):  
Leaf Surface ◽  
Resistance Factor ◽  
Cereal Aphids ◽  
Surface Wax ◽  
Leaf Surface Wax

scholarly journals Completed Genomic Sequence of Bacillus thuringiensis HER1410 Reveals a Cry-Containing Chromosome, Two Megaplasmids, and an Integrative Plasmidial Prophage

2020 ◽  
Vol 10 (9) ◽  
pp. 2927-2939
Author(s):  
Ana Lechuga ◽  
Cédric Lood ◽  
Margarita Salas ◽  
Vera van Noort ◽  
Rob Lavigne ◽  
...  
Keyword(s):  
Bacillus Thuringiensis ◽  
Replication Origin ◽  
Genomic Island ◽  
Genomic Sequence ◽  
The Other ◽  
Conjugative Plasmid ◽  
Taxonomic Feature ◽  
Sporulation Process ◽  
Long Read

Abstract Bacillus thuringiensis is the most used biopesticide in agriculture. Its entomopathogenic capacity stems from the possession of plasmid-borne insecticidal crystal genes (cry), traditionally used as discriminant taxonomic feature for that species. As such, crystal and plasmid identification are key to the characterization of this species. To date, about 600 B. thuringiensis genomes have been reported, but less than 5% have been completed, while the other draft genomes are incomplete, hindering full plasmid delineation. Here we present the complete genome of Bacillus thuringiensis HER1410, a strain closely related to B. thuringiensis entomocidus and a known host for a variety of Bacillus phages. The combination of short and long-read techniques allowed fully resolving the genome and delineation of three plasmids. This enabled the accurate detection of an unusual location of a unique cry gene, cry1Ba4, located in a genomic island near the chromosome replication origin. Two megaplasmids, pLUSID1 and pLUSID2 could be delineated: pLUSID1 (368 kb), a likely conjugative plasmid involved in virulence, and pLUSID2 (156 kb) potentially related to the sporulation process. A smaller plasmidial prophage pLUSID3, with a dual lifestyle whose integration within the chromosome causes the disruption of a flagellar key component. Finally, phylogenetic analysis placed this strain within a clade comprising members from the B. thuringiensis serovar thuringiensis and other serovars and with B. cereus s. s. in agreement with the intermingled taxonomy of B. cereus sensu lato group.

The pericarp and its surface wax layer in maize kernels as resistance factors to fumonisin accumulation by Fusarium verticillioides

2009 ◽  
Vol 28 (2) ◽  
pp. 196-200 ◽  
Author(s):  
D.A. Sampietro ◽  
M.A. Vattuone ◽  
D.A. Presello ◽  
C.M. Fauguel ◽  
C.A.N. Catalán
Keyword(s):  
Fusarium Verticillioides ◽  
Resistance Factors ◽  
Surface Wax ◽  
Maize Kernels

Arabidopsis ketoacyl-CoA synthase 16 (KCS16) forms C36 /C38 acyl precursors for leaf trichome and pavement surface wax

2017 ◽  
Vol 40 (9) ◽  
pp. 1761-1776 ◽  
Author(s):  
Daniela Hegebarth ◽  
Christopher Buschhaus ◽  
Jérôme Joubès ◽  
Didier Thoraval ◽  
David Bird ◽  
...  
Keyword(s):  
Pavement Surface ◽  
Surface Wax ◽  
Leaf Trichome
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