δ13C values of C3 and C4 species of Australian Neurachne and its allies (Poaceae)

1983 ◽  
Vol 31 (3) ◽  
pp. 317 ◽  
Author(s):  
PW Hattersley ◽  
Z Roksandic
Keyword(s):  
Leaf Anatomy ◽  
Related Species ◽  
C4 Plants ◽  
C3 Plants ◽  
Closely Related Species ◽  
Δ13c Values ◽  
C3 And C4 Species ◽  
C4 Species

δ13C values are presented for the 10 closely related species of the endemic Australian genera Thyridolepis, Paraneurachne and Neurachne (Poaceae). The three Thyridolepis species exhibit values typical of C3 plants, Paraneurachne muelleri of C4 plants. The genus Neurachne is variable; five species have C*3 values while N. munroi is typically C*4. These results generally confirm previous anatomical observations showing that Neurachne appears to contain both C3 and C4 species. N. minor, however, while having C3 δ13C values, has leaf anatomy which suggests it is C4. N. minor may be a C3/C4 intermediate.

Physiological, anatomical and biochemical characterisation of photosynthetic types in genus Cleome (Cleomaceae)

2007 ◽  
Vol 34 (4) ◽  
pp. 247 ◽  
Author(s):  
Elena V. Voznesenskaya ◽  
Nuria K. Koteyeva ◽  
Simon D. X. Chuong ◽  
Alexandra N. Ivanova ◽  
João Barroca ◽  
...  
Keyword(s):  
Leaf Anatomy ◽  
C4 Photosynthesis ◽  
C3 Plants ◽  
Intermediate Species ◽  
Δ13c Values ◽  
C4 Species ◽  
Cleome Gynandra ◽  
The Family ◽  
C3 Species ◽  
C4 Pathway

C4 photosynthesis has evolved many times in 18 different families of land plants with great variation in leaf anatomy, ranging from various forms of Kranz anatomy to C4 photosynthesis occurring within a single type of photosynthetic cell. There has been little research on photosynthetic typing in the family Cleomaceae, in which only one C4 species has been identified, Cleome gynandra L. There is recent interest in selecting and developing a C4 species from the family Cleomaceae as a model C4 system, since it is the most closely related to Arabidopsis, a C3 model system (Brown et al. 2005). From screening more than 230 samples of Cleomaceae species, based on a measure of the carbon isotope composition (δ13C) in leaves, we have identified two additional C4 species, C. angustifolia Forssk. (Africa) and C. oxalidea F.Muell. (Australia). Several other species have δ13C values around –17‰ to –19‰, suggesting they are C4-like or intermediate species. Eight species of Cleome were selected for physiological, anatomical and biochemical analyses. These included C. gynandra, a NAD–malic enzyme (NAD–ME) type C4 species, C. paradoxa R.Br., a C3–C4 intermediate species, and 6 others which were characterised as C3 species. Cleome gynandra has C4 features based on low CO2 compensation point (Γ), C4 type δ13C values, Kranz-type leaf anatomy and bundle sheath (BS) ultrastructure, presence of C4 pathway enzymes, and selective immunolocalisation of Rubisco and phosphoenolpyruvate carboxylase. Cleome paradoxa was identified as a C3–C4 intermediate based on its intermediate Γ (27.5 μmol mol–1), ultrastructural features and selective localisation of glycine decarboxylase of the photorespiratory pathway in mitochondria of BS cells. The other six species are C3 plants based on Γ, δ13C values, non-Kranz leaf anatomy, and levels of C4 pathway enzymes (very low or absent) typical of C3 plants. The results indicate that this is an interesting family for studying the genetic basis for C4 photosynthesis and its evolution from C3 species.

A reassessment of the genus Haeckeria (Asteraceae: Gnaphalieae), with definition of new species in Cassinia

2004 ◽  
Vol 17 (5) ◽  
pp. 447 ◽  
Author(s):  
A. E. Orchard
Keyword(s):  
New Species ◽  
Leaf Anatomy ◽  
Related Species ◽  
Closely Related Species ◽  
Definition Of

Variation in the species hitherto known as Haeckeria ozothamnoides F.Muell. is discussed. This taxon has well-developed paleae between the florets, and many collections show development of a pappus. These characters, along with others such as leaf anatomy and morphology, strongly distinguish H. ozothamnoides s. lat. from Haeckeria s. str. and place it in Cassinia. The taxon is also shown to comprise three closely related species, which are here described as Cassinia ozothamnoides (F.Muell.) Orchard, comb. nov., C.�scabrida Orchard, sp. nov. and C.�venusta Orchard, sp. nov. The history, taxonomy, relationships and classification of Haeckeria is reviewed, and the genus and its two remaining species, H.�cassiniiformis and H.�punctulata, are described. All five species are illustrated and their distributions mapped.

Leaf anatomy and subgeneric affiliations of C3 and C4 species of Suaeda (Chenopodiaceae) in North America

1997 ◽  
Vol 84 (9) ◽  
pp. 1198-1210 ◽  
Author(s):  
Deborah D. Fisher ◽  
H. Jochen Schenk ◽  
Jennifer A. Thorsch ◽  
Wayne R. Ferren
Keyword(s):  
North America ◽  
Leaf Anatomy ◽  
C3 And C4 Species ◽  
C4 Species

scholarly journals Carbon isotope composition and leaf anatomy as a tool to characterize the photosynthetic mechanism of Artemisia annua L.

2005 ◽  
Vol 17 (1) ◽  
pp. 187-190 ◽  
Author(s):  
José Abramo Marchese ◽  
Fernando Broetto ◽  
Lin Chau Ming ◽  
Carlos Ducatti ◽  
Roberto Antonio Rodella ◽  
...  
Keyword(s):  
Carbon Isotope ◽  
Leaf Anatomy ◽  
Vascular Tissue ◽  
Artemisia Annua ◽  
Isotope Composition ◽  
Carbon Isotope Composition ◽  
Kranz Anatomy ◽  
Artemisia Annua L ◽  
C3 And C4 Species ◽  
C4 Species

Leaves of Artemisia annua L. are a plentiful source of artemisinin, a drug with proven effectiveness against malaria. The aim of this study was to classify the photosynthetic mechanism of A. annua through studies of the carbon isotope composition (delta 13C) and the leaf anatomy. A. annua presented a delta 13C value of - 31.76 ± 0.07, which characterizes the plants as a typical species of the C3 photosynthethic mechanism, considering that the average delta 13C values for C3 and C4 species are -28 and -14, respectively. The leaf anatomy studies were consistent with the delta 13C results, where, in spite of the existence of parenchymatic cells forming a sheath surrounding the vascular tissue, the cells do not contain chloroplasts or starch. This characteristic is clearly different from that of the Kranz anatomy found in C4 species.

A narrow endemic new species of Dendrobium sect. Stachyobium from Thailand (Orchidaceae: Malaxideae)

Phytotaxa ◽  
2018 ◽  
Vol 348 (2) ◽  
pp. 90
Author(s):  
PHATTARAVEE PROMMANUT ◽  
SOMRAN SUDDEE ◽  
MANIT KIDYOO
Keyword(s):  
New Species ◽  
Leaf Anatomy ◽  
Related Species ◽  
Deciduous Forest ◽  
Check Point ◽  
Closely Related Species ◽  
Narrow Endemic ◽  
Mixed Deciduous Forest ◽  
Tak Province ◽  
A New Species

A new species belonging to Dendrobium section Stachyobium was discovered in mixed deciduous forest near the Check Point to Thi Lo Su Waterfall, Umphang District, Tak Province, in the northern Thailand. A description (including leaf anatomy), illustration and comparison with the closely related species D. incurvum are provided here.

Leaf anatomy of the South African Danthonieae (Poaceae). IV. Merxmuellera drakensbergensis and M. stereophylla

Bothalia ◽  
1981 ◽  
Vol 13 (3/4) ◽  
pp. 487-491
Author(s):  
R. P. Ellis
Keyword(s):  
South African ◽  
Leaf Anatomy ◽  
Related Species ◽  
Leaf Blade ◽  
The South ◽  
Abaxial Epidermis ◽  
Closely Related Species

The leaf blade anatomy of  Merxmuellera drakensbergensis (Schweick.) Conert and  M. stereophylla (J. G. Anders.) Conert is described and illustrated. These two closely related species have virtually identical leaf anatomy—both the leaf in section and the abaxial epidermis. The close anatomical resemblance between these two species raises doubts about their specific status. This is especially significant when compared with the considerable differences observed between the anatomical ‘forms’ recognized in  M. disticha (Nees) Conert (Ellis, 1980) and M. stricta (Schrad.) Conert (Ellis, 1980a).

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