Leucaena leucocephala (leucaena) is a fast-growing tree legume highly tolerant to various abiotic and biotic stresses. Because of its abilities to withstand high temperature and prolonged drought and to grow as a disease-free plant, it is an interesting model plant to investigate genetics of stress resistance. The high-level stress resistance may be correlated with higher expression of certain ...

Ficaprenol-11 (polyprenol) (1), squalene (2), lupeol (3), -sitostenone (4), trans-coumaric acid (5), cis-coumaric acid (6) pheophytin-a (7), pheophorbide a methyl ester (8), methyl-13-hydroxy-(13-S)pheophorbide-b (9) and aristophyll-C (10) were isolated from the whole plants of Leucaena leucocephala (Leguminosae). Among them, 1 and 2 was found for the first time from this species. The structur...

Plants respond to wounding caused by mechanical stress or herbivory by synthesizing defense proteins. There are no studies reporting the action of induced plant proteins against ticks. The aim of this study was to investigate the effect of mechanically wounded Leucaena leucocephala leaves against Rhipicephalus (Boophilus) microplus. Initially, we carried out time course experiments to evaluate ...

This study examines the sustained release behavior of both water-soluble (acetaminophen, caffeine, theophylline and salicylic acid) and water-insoluble (indomethacin) drugs from Leucaena leucocephala seed Gum isolated from Leucaena leucocephala kernel powder. It further investigates the effect of incorporation of diluents like microcrystalline cellulose and lactose on release of caffeine and pa...

Mimosine [α-amino-β-(3-hydroxy-4-oxo-1,4-dihydropyridin-1-yl)-propanoic acid] is a major constituent of Leucaena (Leucaena leucocephala de Wit) and responsible for the strong allelopathic potential of the legume tree. Mimosine showed strong herbicidal activities on six plants in a bioassay. All plant parts of Leucaena contain mimosine. The quantity of mimosine in the young leaves and mature see...

Ensifer adhaerens is a soil bacterium that attaches to other bacteria and may cause lysis of these other bacteria. Based on the sequence of its small-subunit rRNA gene, E. adhaerens is related to Sinorhizobium spp. E. adhaerens ATCC 33499 did not nodulate Phaseolus vulgaris (bean) or Leucaena leucocephala, but with symbiotic plasmids from Rhizobium tropici CFN299 it formed nitrogen-fixing nodul...

Four steroids, 5α,8α-epidioxy-(24ξ)-ergosta-6,22-dien-3β-ol (1), β-sitosterol (2), β-sitostenone (3), and stigmastenone (4), along with 10 known compounds were isolated from the whole plants of Leucaena leucocephala (Leguminosae). 1, Lupeol (5), 1,3-dipalmitoyl-2-oleoylglycerol (6), methylparabene (8) and isovanillic acid (9) were found for the first time from the species. The structure of thes...

Micro/nano (two-tier) structures are often employed to achieve superhydrophobicity. In condensation, utilizing such a surface is not necessarily advantageous because the macroscopically observed Cassie droplets are usually in fact partial Wenzel in condensation. The increase in contact angle through introducing microstructures on such two-tier roughened surfaces may result in an increase in dro...

We have been engaged in a series of projects in which Cassie, the SNePS cognitive agent, has been incorporated into a hardwareor software-simulated cognitive robot. In this paper, we present an informal summary of our approach to anchoring the abstract symbolic terms that denote Cassie’s mental entities in the lowerlevel structures used by embodied-Cassie to operate in the real (or simulated) w...

Superrepellency is an extreme situation where liquids stay at the tops of rough surfaces, in the so-called Cassie state. Owing to the dramatic reduction of solid/liquid contact, such states lead to many applications, such as antifouling, droplet manipulation, hydrodynamic slip, and self-cleaning. However, superrepellency is often destroyed by impalement transitions triggered by environmental di...