scholarly journals Gas exchange and leaf anatomy of a C3–CAM hybrid,Yucca gloriosa(Asparagaceae)

2015 ◽  
Vol 67 (5) ◽  
pp. 1369-1379 ◽  
Author(s):  
Karolina Heyduk ◽  
Nia Burrell ◽  
Falak Lalani ◽  
Jim Leebens-Mack
Keyword(s):  
Gas Exchange ◽  
Leaf Anatomy

Leaf application of 24‐epibrassinolide mitigates cadmium toxicity in young Eucalyptus urophylla plants by modulating leaf anatomy and gas exchange

2020 ◽  
Author(s):  
Luiz Felipe Silva Cunha ◽  
Victor Pereira Oliveira ◽  
Antonio Wellinton Silva Nascimento ◽  
Breno Ricardo Serrão Silva ◽  
Bruno Lemos Batista ◽  
...  
Keyword(s):  
Gas Exchange ◽  
Leaf Anatomy ◽  
Cadmium Toxicity ◽  
Eucalyptus Urophylla

Leaf anatomy, gas exchange and photosynthetic enzyme activity in Flaveria kochiana

2007 ◽  
Vol 34 (2) ◽  
pp. 118 ◽  
Author(s):  
Erika A. Sudderth ◽  
Riyadh M. Muhaidat ◽  
Athena D. McKown ◽  
Ferit Kocacinar ◽  
Rowan F. Sage
Keyword(s):  
Gas Exchange ◽  
Leaf Anatomy ◽  
Carbon Isotope Ratio ◽  
Compensation Point ◽  
Initial Slope ◽  
Kranz Anatomy ◽  
Pyruvate Orthophosphate Dikinase ◽  
Co2 Compensation Point ◽  
C4 Species ◽  
Flaveria Species

Flaveria (Asteraceae) is one of the few genera known to contain both C3 and C4 species, in addition to numerous biochemically-intermediate species. C3-C4 and C4-like intermediate photosynthesis have arisen more than once in different phylogenetic clades of Flaveria. Here, we characterise for the first time the photosynthetic pathway of the recently described species Flaveria kochiana B.L. Turner. We examined leaf anatomy, activity and localisation of key photosynthetic enzymes, and gas exchange characteristics and compared these trait values with those from related C4 and C4-like Flaveria species. F. kochiana has Kranz anatomy that is typical of other C4 Flaveria species. As in the other C4 lineages within the Flaveria genus, the primary decarboxylating enzyme is NADP-malic enzyme. Immunolocalisation of the major C4 cycle enzymes, PEP carboxylase and pyruvate, orthophosphate dikinase, were restricted to the mesophyll, while Rubisco was largely localised to the bundle sheath. Gas exchange analysis demonstrated that F. kochiana operates a fully functional C4 pathway with little sensitivity to ambient oxygen levels. The CO2 compensation point (2.2 µbar) was typical for C4 species, and the O2-response of the CO2 compensation point was the same as the C4 species F. trinervia. Notably, F. vaginata (B.L. Robinson & Greenman), a putative C4-like species that is the nearest relative of F. kochiana, had an identical response of the CO2 compensation point to O2. Furthermore, F. vaginata, exhibited a carbon isotope ratio (–15.4‰) similar to C4 species including F. australasica Hooker, F. trinervia Spreng. C. Mohr and the newly characterised F. kochiana. F. vaginata could be considered a C4 species, but additional studies are necessary to confirm this hypothesis. In addition, our results show that F. kochiana uses an efficient C4 cycle, with the highest initial slope of the A/Ci curve of any C4 Flaveria species.

Effect of Ecklonia maxima seaweed extract on yield, mineral composition, gas exchange, and leaf anatomy of zucchini squash grown under saline conditions

2016 ◽  
Vol 29 (1) ◽  
pp. 459-470 ◽  
Author(s):  
Youssef Rouphael ◽  
Veronica De Micco ◽  
Carmen Arena ◽  
Giampaolo Raimondi ◽  
Giuseppe Colla ◽  
...  
Keyword(s):  
Gas Exchange ◽  
Mineral Composition ◽  
Leaf Anatomy ◽  
Seaweed Extract ◽  
Ecklonia Maxima

Leaf Anatomy of Two Lycopersicon Species with Contrasting Gas Exchange Properties

Crop Science ◽  
1994 ◽  
Vol 34 (1) ◽  
pp. 108-113 ◽  
Author(s):  
Hirut Kebede ◽  
Bjorn Martin ◽  
James Nienhuis ◽  
Gretchen King
Keyword(s):  
Gas Exchange ◽  
Leaf Anatomy ◽  
Lycopersicon Species ◽  
Exchange Properties

Leaf Anatomy and Gas Exchange in Nearly Isogenic Semidwarf and Tall Winter Wheat

Crop Science ◽  
1989 ◽  
Vol 29 (5) ◽  
pp. 1246-1251 ◽  
Author(s):  
D. R. LeCain ◽  
J. A. Morgan ◽  
G. Zerbi
Keyword(s):  
Gas Exchange ◽  
Winter Wheat ◽  
Leaf Anatomy

Water stress affects leaf anatomy, gas exchange, water relations and growth of two avocado cultivars

2002 ◽  
Vol 95 (1-2) ◽  
pp. 39-50 ◽  
Author(s):  
K. Chartzoulakis ◽  
A. Patakas ◽  
G. Kofidis ◽  
A. Bosabalidis ◽  
A. Nastou
Keyword(s):  
Water Stress ◽  
Gas Exchange ◽  
Water Relations ◽  
Leaf Anatomy

scholarly journals In silico study of the role of cell growth factors in photosynthesis using a virtual leaf tissue generator coupled to a microscale photosynthesis gas exchange model

2019 ◽  
Vol 71 (3) ◽  
pp. 997-1009 ◽  
Author(s):  
Moges A Retta ◽  
Metadel K Abera ◽  
Herman Nc Berghuijs ◽  
Pieter Verboven ◽  
Paul C Struik ◽  
...  
Keyword(s):  
Cell Growth ◽  
Gas Exchange ◽  
Cross Sections ◽  
Leaf Anatomy ◽  
In Silico ◽  
Leaf Tissue ◽  
In Silico Analysis ◽  
Interactive Effects ◽  
Microscale Model

Abstract Computational tools that allow in silico analysis of the role of cell growth and division on photosynthesis are scarce. We present a freely available tool that combines a virtual leaf tissue generator and a two-dimensional microscale model of gas transport during C3 photosynthesis. A total of 270 mesophyll geometries were generated with varying degrees of growth anisotropy, growth extent, and extent of schizogenous airspace formation in the palisade mesophyll. The anatomical properties of the virtual leaf tissue and microscopic cross-sections of actual leaf tissue of tomato (Solanum lycopersicum L.) were statistically compared. Model equations for transport of CO2 in the liquid phase of the leaf tissue were discretized over the geometries. The virtual leaf tissue generator produced a leaf anatomy of tomato that was statistically similar to real tomato leaf tissue. The response of photosynthesis to intercellular CO2 predicted by a model that used the virtual leaf tissue geometry compared well with measured values. The results indicate that the light-saturated rate of photosynthesis was influenced by interactive effects of extent and directionality of cell growth and degree of airspace formation through the exposed surface of mesophyll per leaf area. The tool could be used further in investigations of improving photosynthesis and gas exchange in relation to cell growth and leaf anatomy.

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