scholarly journals Encapsulation of Cinnamic Acid by Cucurbit[7]uril for Enhancing Photoisomerization

Molecules ◽  
2020 ◽  
Vol 25 (16) ◽  
pp. 3702
Author(s):  
Na’il Saleh ◽  
Muna S. Bufaroosha ◽  
Ziad Moussa ◽  
Rukayat Bojesomo ◽  
Hebah Al-Amodi ◽  
...  
Keyword(s):  
Conformational Changes ◽  
Cinnamic Acid ◽  
Uv Light ◽  
Visible Absorption ◽  
Ph Values ◽  
Host Guest Complex ◽  
Plant Growth Promoting ◽  
Plant Growth Promoting Activity ◽  
Uv Visible ◽  
Growth Promoting

Cis- or Z-configuration is required for the plant growth-promoting activity of cinnamic acid (CA), whereas the E-form is inactive. Herein, we describe the encapsulation of E-CA by cucurbit[7]uril (CB7) and show that photoisomerization reactions can be more efficiently controlled in aqueous solutions by utilizing this supramolecular approach. Measurements of UV–visible absorption and proton NMR spectra at different pH values confirm that E-CA and its methyl ester, methyl-E-cinnamate (MC), form stronger 1:1 host–guest complexes with CB7 compared to cucurbit[8]uril (CB8) or three cyclodextrins (α-, β-, and γ-CD). Irradiation of (300 nm) UV light to an aqueous solution of the CB7-bound E isomers induces E to Z photoisomerization and the dissociation of the complex. When the same solution is irradiated by (254 nm) UV light, Z to E conformational changes of the unbound Z isomers are observed and are accompanied by restoring the host–guest complex formation.

scholarly journals Novel Effects of Leonardite-Based Applications on Sugar Beet

2021 ◽  
Vol 12 ◽  
Author(s):  
Maria C. Della Lucia ◽  
Giovanni Bertoldo ◽  
Chiara Broccanello ◽  
Laura Maretto ◽  
Samathmika Ravi ◽  
...  
Keyword(s):  
Sugar Beet ◽  
Auxin Transport ◽  
Foliar Application ◽  
Transport Proteins ◽  
Expression Level ◽  
Compositional Structure ◽  
Gene Coding ◽  
Plant Growth Promoting ◽  
Plant Growth Promoting Activity ◽  
Growth Promoting

The present study aimed to explore the effects of foliar application of a leonardite-based product on sugar beet (Beta vulgaris L.) plants grown in the field. The approach concerned the evaluation of the community compositional structure of plant endophytic bacteria through a metabarcoding approach, the expression level of a gene panel related to hormonal metabolism and signaling, and the main sugar beet productivity traits. Results indicated that plants treated with leonardite (dosage of 2,000 ml ha–1, dilution 1:125, 4 mg C l–1) compared with untreated ones had a significant increase (p < 0.05) in (i) the abundance of Oxalicibacterium spp., recognized to be an endophyte bacterial genus with plant growth-promoting activity; (ii) the expression level of LAX2 gene, coding for auxin transport proteins; and (iii) sugar yield. This study represents a step forward to advance our understanding of the changes induced by leonardite-based biostimulant in sugar beet.

scholarly journals Plant growth-promoting activity of beta-propeller protein YxaL secreted from Bacillus velezensis strain GH1-13

PLoS ONE ◽  
2019 ◽  
Vol 14 (4) ◽  
pp. e0207968 ◽  
Author(s):  
Yong-Hak Kim ◽  
Yunhee Choi ◽  
Yu Yeong Oh ◽  
Nam-Chul Ha ◽  
Jaekyeong Song
Keyword(s):  
Plant Growth ◽  
Bacillus Velezensis ◽  
Plant Growth Promoting ◽  
Plant Growth Promoting Activity ◽  
Growth Promoting

Total synthesis of calonyctin A2, a macrolidic glycolipid with plant growth-promoting activity

2000 ◽  
Vol 41 (18) ◽  
pp. 3453-3457 ◽  
Author(s):  
Jun-ichi Furukawa ◽  
Shigeru Kobayashi ◽  
Motoyoshi Nomizu ◽  
Norio Nishi ◽  
Nobuo Sakairi
Keyword(s):  
Plant Growth ◽  
Total Synthesis ◽  
Plant Growth Promoting ◽  
Plant Growth Promoting Activity ◽  
Growth Promoting

scholarly journals In Vitro Plant Growth Promoting Activity of Phyllocladane Diterpenoids Isolated from Callicarpa macrophylla Vahl. in Shoot Cultures of Rauwolfia serpentina

2007 ◽  
Vol 2 (8) ◽  
pp. 1934578X0700200 ◽  
Author(s):  
Manoj K Goel ◽  
Arun K Kukreja ◽  
Anil K Singh ◽  
Suman Preet S Khanuja
Keyword(s):  
Plant Growth ◽  
Shoot Cultures ◽  
Rauwolfia Serpentina ◽  
Plant Growth Promoting Activities ◽  
Plant Growth Promoting ◽  
Plant Tissue Cultures ◽  
Plant Growth Promoting Activity ◽  
Growth Promoting ◽  
In Vitro Shoot Cultures

Phyllocladane diterpenoids, particularly calliterpenone (1) and calliterpenone monoacetate (2), isolated from leaves of Callicarpa macrophylla, produced significantly higher growth and multiplication of in vitro shoot cultures of Rauwolfia serpentina at 0.25 and 0.5 mg/L concentrations, respectively, compared to certain other plant growth regulators (0.1-5.0 mg/L) tested under in vitro conditions. This is the first report of the plant growth promoting activities of 1 and 2 in plant tissue cultures.

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