scholarly journals Canavalia ensiformis (jack bean).

2020 ◽  
Author(s):  
Eduardo A. Ventosa Febles
Keyword(s):  
Central America ◽  
Invasive Plants ◽  
Environmental Conditions ◽  
Cover Crop ◽  
Green Manure ◽  
Jack Bean ◽  
Canavalia Ensiformis ◽  
Disturbed Areas ◽  
The Tropics

Abstract Canavalia ensiformis is a vine native to South and Central America that has been introduced in the tropics and subtropics worldwide. It is grown for food, fodder and as a cover crop or green manure. It can grow on depleted soils under harsh environmental conditions and become established in disturbed areas. It is listed in a database of invasive plants in Taiwan and has been identified as a transformer species with the potential to become invasive in Cuba.

scholarly journals Variation in the ureide content of Jack Bean during the reproductive stages in response to nitrate

2009 ◽  
Vol 52 (3) ◽  
pp. 581-585 ◽  
Author(s):  
Liliane Santos Camargos ◽  
Leandro Ferreira Aguiar ◽  
José Antônio Carmezini ◽  
Ricardo Antunes Azevedo
Keyword(s):  
Developmental Stage ◽  
Nitrogen Metabolism ◽  
Plant Species ◽  
Green Manure ◽  
Crop Plants ◽  
Mineral Nutrient ◽  
N Fixation ◽  
Jack Bean ◽  
Canavalia Ensiformis ◽  
Nitrate Dose

Nitrogen is frequently the limiting mineral nutrient for plant productivity and it is essential to obtain an understanding of how this element is assimilated and its metabolism regulated, in crop plants. The objective of this work was to study nitrogen metabolism in the tropical legume Canavalia ensiformis, a plant species used as a green manure. The nitrate dose provided changed the concentrations of ureides exported via the xylem, whilst the developmental stage alterations demonstrated to influence the form of ureide exported via the xylem. Considering the content of ureides as an indicator of N-fixation status, it could be concluded that N-fixation was affected in the presence of nitrate in C. ensiformis.

scholarly journals Synthesis of 1,4-imino-L-lyxitols modified at C-5 and their evaluation as inhibitors of GH38 α-mannosidases

2018 ◽  
Vol 14 ◽  
pp. 2156-2162 ◽  
Author(s):  
Maroš Bella ◽  
Sergej Šesták ◽  
Ján Moncoľ ◽  
Miroslav Koóš ◽  
Monika Poláková
Keyword(s):  
Drosophila Melanogaster ◽  
Inhibitory Activity ◽  
Synthetic Approach ◽  
Jack Bean ◽  
Canavalia Ensiformis ◽  
Inhibition Effect ◽  
No Inhibition

A synthetic approach to 1,4-imino-L-lyxitols with various modifications at the C-5 position is reported. These imino-L-lyxitol cores were used for the preparation of a series of N-(4-halobenzyl)polyhydroxypyrrolidines. An impact of the C-5 modification on the inhibition and selectivity against GH38 α-mannosidases from Drosophila melanogaster, the Golgi (GMIIb) and lysosomal (LManII) mannosidases and commercial jack bean α-mannosidase from Canavalia ensiformis was evaluated. The modification at C-5 affected their inhibitory activity against the target GMIIb enzyme. In contrast, no inhibition effect of the pyrrolidines against LManII was observed. The modification of the imino-L-lyxitol core is therefore a suitable motif for the design of inhibitors with desired selectivity against the target GMIIb enzyme.

scholarly journals Identification and Characterization of α-Glucosidase Inhibition Flavonol Glycosides from Jack Bean (Canavalia ensiformis (L.) DC

Molecules ◽  
2020 ◽  
Vol 25 (11) ◽  
pp. 2481
Author(s):  
Anita M. Sutedja ◽  
Emiko Yanase ◽  
Irmanida Batubara ◽  
Dedi Fardiaz ◽  
Hanifah N. Lioe
Keyword(s):  
2D Nmr ◽  
The Other ◽  
Inhibition Activity ◽  
Jack Bean ◽  
Canavalia Ensiformis ◽  
Kaempferol Glycosides ◽  
Uv Visible ◽  
First Time ◽  
Identification And Characterization

Although the intake of jack bean (Canavalia ensiformis (L.) DC.), an underutilized tropical legume, can potentially decrease the risk of several chronic diseases, not much effort has been directed at profiling the polyphenolics contained therein. Hence, this work aimed to identify and quantify the dominant jack bean polyphenolics, which are believed to have antioxidant and other bioactivities. Four major compounds were detected and identified as kaempferol glycosides with three or four glycoside units. Their structures were established based on UV-visible, 1D, 2D NMR, and HR-ESI-MS analyses. Specifically, kaempferol 3-O-α-l-rhamnopyranosyl (1→6)- β-d-glucopyranosyl (1→2)-β-d-galactopyranosyl-7-O-[3-O-o-anisoyl]-α-l-rhamnopyranoside was detected for the first time, while the other three compounds have already been described in plants other than jack bean. This new compound was found to have a higher α-glucosidase inhibition activity compared to acarbose.

scholarly journals Predicting photosynthesis and transpiration responses to ozone: decoupling modeled photosynthesis and stomatal conductance

2012 ◽  
Vol 9 (8) ◽  
pp. 3113-3130 ◽  
Author(s):  
D. Lombardozzi ◽  
S. Levis ◽  
G. Bonan ◽  
J. P. Sparks
Keyword(s):  
Carbon Dioxide ◽  
Stomatal Conductance ◽  
Primary Productivity ◽  
Environmental Conditions ◽  
Water Exchange ◽  
Global Scale ◽  
Community Land Model ◽  
Climate Regulation ◽  
The Tropics ◽  
Tulip Poplar

Abstract. Plants exchange greenhouse gases carbon dioxide and water with the atmosphere through the processes of photosynthesis and transpiration, making them essential in climate regulation. Carbon dioxide and water exchange are typically coupled through the control of stomatal conductance, and the parameterization in many models often predict conductance based on photosynthesis values. Some environmental conditions, like exposure to high ozone (O3) concentrations, alter photosynthesis independent of stomatal conductance, so models that couple these processes cannot accurately predict both. The goals of this study were to test direct and indirect photosynthesis and stomatal conductance modifications based on O3 damage to tulip poplar (Liriodendron tulipifera) in a coupled Farquhar/Ball-Berry model. The same modifications were then tested in the Community Land Model (CLM) to determine the impacts on gross primary productivity (GPP) and transpiration at a constant O3 concentration of 100 parts per billion (ppb). Modifying the Vcmax parameter and directly modifying stomatal conductance best predicts photosynthesis and stomatal conductance responses to chronic O3 over a range of environmental conditions. On a global scale, directly modifying conductance reduces the effect of O3 on both transpiration and GPP compared to indirectly modifying conductance, particularly in the tropics. The results of this study suggest that independently modifying stomatal conductance can improve the ability of models to predict hydrologic cycling, and therefore improve future climate predictions.

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