C4 Acid Decarboxylation Enzymes and Anatomy in Sedges (Cyperaceae): First Record of NAD-Malic Enzyme Species

1987 ◽  
Vol 14 (6) ◽  
pp. 719 ◽  
Author(s):  
JJ Bruhl ◽  
NE Stone ◽  
PW Hattersley
Keyword(s):  
Malic Enzyme ◽  
Phosphoenolpyruvate Carboxykinase ◽  
First Record ◽  
The Other ◽  
Photosynthetic Pathway ◽  
The Family ◽  
Enzyme Species

The activities of C4 acid decarboxylation enzymes (NAD-malic enzyme, NADP-malic enzyme, and phosphoenolpyruvate carboxykinase), and the anatomy of photosynthetic organs (leaves, culms, bracts) were investigated in 30 species from 12 C3, C4, and mixed (C3+C4) genera of sedges. The sample incorporated representatives of the three previously known C4 anatomical types in the family (fimbristyloid, chlorocyperoid, and rhynchosporoid), and of six genera previously uninvestigated biochemically, including Eleocharis (six species). Eleocharis is variable for photosynthetic pathway: three species proved to be C3, two C4 (E. caespitosissima Baker and E. retroflexa (Poir.) Urban), and one (E. pusilla R. Br.) may be a C3-C4 intermediate. The C4 Eleocharis spp. exhibit a C4 anatomy ('eleocharoid') hitherto undescribed, and are NAD-ME type, in contrast to species of the other three C4 anatomical types examined in this and previous studies, which are all NADP-ME type. The PCK type remains unrecorded in the family.

scholarly journals Prochelator tupuhi sp. nov., the first record of Desmosomatidae Sars, 1897 (Crustacea: Isopoda) from New Zealand waters

Zootaxa ◽  
2008 ◽  
Vol 1866 (1) ◽  
pp. 482 ◽  
Author(s):  
SASKIA BRIX ◽  
NIEL L. BRUCE
Keyword(s):  
New Species ◽  
New Zealand ◽  
Southern Hemisphere ◽  
Lateral Lobe ◽  
First Record ◽  
The Other ◽  
The Family

Prochelator tupuhi sp. nov. is the first record of the genus Prochelator Hessler, 1970 from Southern Hemisphere waters, and the first record of the family Desmosomatidae from New Zealand. The new species can be distinguished from all other species of the genus by the following characters: body elongate, without spine-like ventral elongations on pereonites 1–4, pereonite 1 as high as pereonite 5, mesial lobe of the maxilla much shorter than in the other species of the genus, reaching only half the length of the lateral lobe, carpus of pereopod 1 distinctly produced at the base of the claw, propodus broadest at the articulation to the carpus, tapering distally.

Photosynthesis in Phosphoenolpyruvate Carboxykinase-Type C4 Species: Properties of Nad-Malic Enzyme From Urochloa panicoides

1987 ◽  
Vol 14 (5) ◽  
pp. 517 ◽  
Author(s):  
JN Burnell
Keyword(s):  
Malic Enzyme ◽  
Phosphoenolpyruvate Carboxykinase ◽  
Bundle Sheath ◽  
Photosynthetic Pathway ◽  
C4 Plant ◽  
C4 Species ◽  
Absolute Requirement ◽  
Pep Carboxykinase ◽  
Fructose 1,6 Bisphosphate ◽  
Regulatory Properties

NAD-malic enzyme (EC 1.1.1.39) was purified from bundle sheath strands of Urochloa panicoides (a phosphoenolpyruvate carboxykinase-type C4 plant) and its kinetic and regulatory properties were investigated. The native enzyme has a molecular weight of about 470 000 and is an octomer composed of two slightly different monomers which occur in a 1 : 1 ratio. The enzyme has an absolute requirement for Mn2+, is stimulated by CoA, acetyl CoA, fructose 1,6-bisphosphate and SO42- and is inhibited by HCO3, oxaloacetate, 2-oxoglutarate and pyruvate. The enzyme is shown to be localised in the mito- chondria. The purified NAD-malic enzyme is unable to catalyse the carboxylation of pyruvate according to the reverse reaction. These findings are discussed in relation to the C4 photosynthetic pathway and its possible role in PEP carboxykinase-type C4 plants.

First occourence of the family Glaresidae in Italy, with description of the new species Glaresis gentile from Sardinia (Coleoptera: Scarabaeoidea: Glaresidae)

2020 ◽  
Vol 15 (2) ◽  
pp. 44-53
Author(s):  
STEFANO ZIANI ◽  
MARCO ULIANA ◽  
ROBERTO RATTU
Keyword(s):  
New Species ◽  
Key Words ◽  
North Africa ◽  
Sand Dunes ◽  
First Record ◽  
The Other ◽  
European Species ◽  
The Family ◽  
Western European ◽  
Species Taxonomy

Glaresis gentile sp. nov. is described from southwestern Sardinia, Italy, providing the first record of the family Glaresidae from Italy. The new species is compared with the other western European species and with some other taxa described from North Africa. It appears to be closest to the poorly known Iberian G. thiniensis Verdú & Galante, 2001, whose aedeagus morphology is precised. Finally, a key to the European species is provided. Key words: Scarabaeoidea, Glaresidae, Glaresis, new species, taxonomy, Sardinia, Spain, sand dunes

Systematics of Sciadoceridae and Relatives With Descriptions of Two New Genera and Species From Canadian Amber and Erection of Family Ironomyiidae (Diptera: Phoroidea)

1966 ◽  
Vol 98 (5) ◽  
pp. 527-544 ◽  
Author(s):  
J. F. McAlpine ◽  
J. E. H. Martin
Keyword(s):  
North America ◽  
First Record ◽  
The Other ◽  
New Genera ◽  
New Family ◽  
The Family ◽  
Systematic Relationships

AbstractThe systematic relationships of Sciadoceridae and of the other families of the superfamily Phoroidea, i.e., Platypezidae, Ironomyiidae and Phoridae, are reviewed. A new family, Ironomyiidae, is proposed for Ironomyia nigromaculata White from Tasmania. Two fossil flies in Canadian (Cretaceous) amber, representing two new genera and species of Sciadoceridae, are described and figured. These constitute the first record of the family in North America. The supposed phylogenies of the families of the Phoroidea and of the genera and species of Sciadoceridae are outlined; the evolution and biogeography of the latter family is treated in detail. Keys to the families of the Phoroidea and to the genera and species of Sciadoceridae are provided.

scholarly journals Lumbrineridae (Polychaeta) from the Portuguese continental shelf (NE Atlantic) with the description of four new species

Zootaxa ◽  
2012 ◽  
Vol 3416 (1) ◽  
pp. 1 ◽  
Author(s):  
ROBERTO MARTINS ◽  
LUIS F. CARRERA-PARRA ◽  
VICTOR QUINTINO ◽  
ANA MARIA RODRIGUES
Keyword(s):  
Multivariate Analysis ◽  
New Species ◽  
Atlantic Ocean ◽  
Continental Shelf ◽  
Morphological Characteristics ◽  
First Record ◽  
The Other ◽  
Ne Atlantic ◽  
The Family ◽  
Water Depths

The present study reports four new species of the Family Lumbrineridae Schmarda, 1861, three in the genus Lumbrinerisde Blainville, 1828 and one in the genus Gallardoneris Carrera-Parra, 2006. The new species were found on the Portu-guese continental shelf at water depths ranging from 11 to 190 m. Gallardoneris iberica sp. nov. is the first record of thisgenus in the Atlantic Ocean and can be distinguished from the other two known Gallardoneris species by the distributionof the composite and the simple multidentate hooded hooks and the shape of the parapodial lobes. Lumbrineris luciliaesp. nov. has an arcuate, unidentate MIII and MIV unidentate with well-developed plate, digitiform wide basallypostchaetal lobes in anterior parapodia, composite multidentate hooded hooks with short blade. Furthermore, L. luciliaesp. nov. has simple multidentate hooded hooks of two sizes, preacicular hook twice as big as postacicular hook, and dis-tally curved aciculae in median and posterior parapodia. Both Lumbrineris lusitanica sp. nov. and Lumbrineris pinastersp. nov. are characterized by having MIII unidentate followed by a knob. However, L. lusitanica sp. nov. has digitiformwide basally postchaetal lobes in the anterior parapodia, composite multidentate hooded hooks with short blade and simplemultidentate hooded hooks with short hood; while L. pinaster sp. nov. has auricular postchaetal lobes in the anteriorparapodia, composite multidentate hooded hooks with long blade, and simple multidentate hooded hooks with short andlong hood. A multivariate analysis was performed upon morphological characteristics and validates the separation of the four new species. A taxonomic key to lumbrinerid species from Iberian waters is included.

Copepoda (Siphonostomatoida: Dirivultidae) from Hydrothermal Vent Fields on the Central Indian Ridge, Indian Ocean

Zootaxa ◽  
2020 ◽  
Vol 4759 (3) ◽  
pp. 301-337 ◽  
Author(s):  
JIMIN LEE ◽  
DONGSUNG KIM ◽  
IL-HOI KIM
Keyword(s):  
Indian Ocean ◽  
Deep Water ◽  
Hydrothermal Vent ◽  
First Record ◽  
The Other ◽  
Central Indian Ridge ◽  
East Pacific ◽  
The Family ◽  
The Indian Ocean ◽  
Indian Ridge

Eight species of copepods belonging to the family Dirivultidae (Siphonostomatoida) are described from deep-water hydrothermal vent fields on the Central Indian Ridge in the Indian Ocean. Aphotopontius limatulus Humes, 1987, previously known only from the East Pacific, is included. The other seven species are new, as follows: Aphotopontius kiost n. sp., A. muricatus n. sp., Benthoxynus constrictus n. sp., Stygiopontius spinifer n. sp., S. horridus n. sp., S. geminus n. sp., and S. quadripaxillifer n. sp. The copepodid I stage of S. horridus n. sp. is also described. This is the first record on copepods living on hydrothermal vent fields in the Indian Ocean. 

scholarly journals Trichostrongylina (Nematoda, Heligmosomoidea) coparasites in Dasyprocta fuliginosa Wagler (Rodentia, Dasyproctidae) from Brazil, with the re-establishment of the genus Avellaria Freitas & Lent and the description of two new species

2006 ◽  
Vol 23 (2) ◽  
pp. 509-519 ◽  
Author(s):  
Marie C. Durette-Desset ◽  
Alessandra Q. Gonçalves ◽  
Roberto M. Pinto
Keyword(s):  
New Species ◽  
Body Length ◽  
Type Species ◽  
First Record ◽  
The State ◽  
The Other ◽  
Single Type ◽  
Spicule Length ◽  
The Family ◽  
Two New Species

Two new tichostrongylid nematodes of the family Viannaiidae Durette-Desset & Chabaud, 1981 coparasites in Dasyprocta fuliginosa Wagler, 1832 from the State of Amazonas, Brazil, are described: Viannella trichospicula sp. nov. is differentiated from the other species of the genus by the extreme slenderness of its spicules. Avellaria intermedia sp. nov. is distinguished from the single type species Avellaria avellari Freitas & Lent, 1934, by a smaller number of cuticular ridges (17 versus 27), a higher ratio of spicule length/ body length (8% versus 5.6%) and spicules with a single tip. This genus, synonymized with the genus Viannella Travassos, 1918, by Durette-Desset (1968) is re-established, the female being didelphic. It is the first record of a nematode of the family Viannaiidae in a host of the family Dasyproctidae Bonaparte, 1838.

Problems of Marriage and Self Surrender in The Novels of Shashi Deshpande

2019 ◽  
Vol 7 (11) ◽  
pp. 18
Author(s):  
Dr. Indu Goyal
Keyword(s):  
Middle Class ◽  
The Other ◽  
Important Thing ◽  
Female Protagonists ◽  
Central Concern ◽  
Modern Age ◽  
The Family ◽  
Traditional Marriage ◽  
Shashi Deshpande ◽  
Middle Class People

Marriage is an important thing in the life of a woman. The importance that our society attaches to marriage is reflected in our literature and it is the central concern of Shashi Deshpade’s novels. In our society where girl learns early that she is ‘Paraya Dhan’, and she is her parents’ responsibility till the day she is handed over to her rightful owners. What a girl makes of her life, how she shapes herself as an individual, what profession she takes up is not as important as whom she marries. Marriage is the ultimate goal of a woman’s life. This paper attempts to probe into the problems of marriage through the protagonists of her novels where one enjoys the freedom of marriage and the other accepts the traditional marriage. Shashi Deshpade highlights the problems of marriage faced by middle-class people in finding suitable grooms for their daughters. This problem is well-illustrated through the characters of her novels. Since the girl’s mind over her childhood is tuned that she is another’s property, she tries to attach a lot of importance to it. it is indeed a tragedy that even in the modern age, Indian females echo the same sentiment where it was marriage which mattered most of them but not to the men. It is a beginning of females sacrifices in life that marriage brings to her. Shashi Deshpande encourages her female protagonists to rise in rebellion against the males in the family matters, instead she wants to build a harmonious relationship between man and woman in a mood of compromise and reconciliation.  

On Commutation Properties of the Composition Relation of Convergent and Divergent Permutations (Part I)

2014 ◽  
Vol 58 (1) ◽  
pp. 13-22
Author(s):  
Roman Wituła ◽  
Edyta Hetmaniok ◽  
Damian Słota
Keyword(s):  
Finite Order ◽  
Convergent Series ◽  
The Other ◽  
Other Hand ◽  
The Family ◽  
Composition Relation ◽  
The Continuum

Abstract In the paper we present the selected properties of composition relation of the convergent and divergent permutations connected with commutation. We note that a permutation on ℕ is called the convergent permutation if for each convergent series ∑an of real terms, the p-rearranged series ∑ap(n) is also convergent. All the other permutations on ℕ are called the divergent permutations. We have proven, among others, that, for many permutations p on ℕ, the family of divergent permutations q on ℕ commuting with p possesses cardinality of the continuum. For example, the permutations p on ℕ having finite order possess this property. On the other hand, an example of a convergent permutation which commutes only with some convergent permutations is also presented.

Status of Family Fissidentaceae in Gujarat

2016 ◽  
Vol 1 (1) ◽  
Author(s):  
D.G. Shah ◽  
D.N. Mehta ◽  
R.V. Gujar
Keyword(s):  
Distinct Species ◽  
The State ◽  
The Other ◽  
Land Plants ◽  
Reproductive Structures ◽  
The Family ◽  
The Status ◽  
Vegetative Characters ◽  
First Time ◽  
Different Parts

Bryophytes are the second largest group of land plants and are also known as the amphibians of the plant kingdom. 67 species of bryophytes have been reported from select locations across the state of Gujrat. The status of family fissidentaceae which is a large moss family is being presented in this paper. Globally the family consists of 10 genera but only one genus, Fissidens Hedw. has been collected from Gujarat. Fissidens is characterized by a unique leaf structure and shows the presence of three distinct lamina, the dorsal, the ventral and the vaginant lamina. A total of 8 species of Fissidens have been reported from the state based on vegetative characters as no sporophyte stages were collected earlier. Species reported from the neighboring states also showed the absence of sporophytes. The identification of different species was difficult due to substantial overlap in vegetative characters. Hence a detailed study on the diversity of members of Fissidentaceae in Gujarat was carried out between November 2013 and February 2015. In present study 8 distinct species of Fissidens have been collected from different parts of the state. Three species Fissidens splachnobryoides Broth., Fissidens zollingerii Mont. and Fissidens curvato-involutus Dixon. have been identified while the other five are still to be identified. Fissidens zollingerii Mont. and Fissidens xiphoides M. Fleisch., which have been reported as distinct species are actually synonyms according to TROPICOS database. The presence of sexual reproductive structures and sporophytes for several Fissidens species are also being reported for the first time from the state.

Sign in / Sign up

Export Citation Format

Share Document