Host-Plant Effect on the Chemical Constituents of Cuscuta reflexa

2017 ◽  
Vol 53 (3) ◽  
pp. 540-542 ◽  
Author(s):  
Shaheen Faizi ◽  
Muhammad Ali Versiani ◽  
Asma Kanwal ◽  
Aneela Naz
Keyword(s):  
Host Plant ◽  
Chemical Constituents ◽  
Cuscuta Reflexa ◽  
Host Plant Effect ◽  
Plant Effect

scholarly journals Host plant effect on development and reproduction of Bemisia argentifolii Bellows et Perring (B. tabaci [Gennadius] B-biotype) (Homoptera: Aleyrodidae)

2007 ◽  
Vol 42 (1) ◽  
pp. 63-70 ◽  
Author(s):  
Kazuki Kakimoto ◽  
Hideaki Inoue ◽  
Takuhiro Yamaguchi ◽  
Shigenori Ueda ◽  
Ken-ichiro Honda ◽  
...  
Keyword(s):  
Host Plant ◽  
Bemisia Argentifolii ◽  
Host Plant Effect ◽  
Plant Effect ◽  
B Biotype

scholarly journals Effects of host plant characteristics on spray deposition

2007 ◽  
Vol 60 ◽  
pp. 85-88
Author(s):  
S.F. Gous ◽  
B. Richardson
Keyword(s):  
Host Plant ◽  
Laboratory Experiments ◽  
Plant Architecture ◽  
Spray Deposition ◽  
Unit Leaf ◽  
Plant Characteristics ◽  
Host Plant Effect ◽  
Plant Effect ◽  
Large Host ◽  
Host Plant Architecture

Previous studies have shown that the effect of Bacillus thuringiensis var kurstaki (Btk) on painted apple moth (PAM; Teia anartoides Walker) efficacy varies significantly depending on the host plant species This study tested the hypothesis that host plant architecture influenced deposition of aerially applied Btk and its consequent efficacy against PAM Laboratory experiments demonstrated that the architecture of six host plants had a significant influence on Btk dose per unit leaf area and dose per unit leaf weight However the large host plant effect on PAM mortality from Btk could not be explained in terms of variation in the amount of spray intercepted

scholarly journals Analysis of defensive secretion of a milkweed bug Lygaeus equestris by 1D GC-MS and GC×GC-MS: sex differences and host-plant effect

2020 ◽  
Vol 10 (1) ◽  
Author(s):  
Martina Havlikova ◽  
Tereza Bosakova ◽  
Georg Petschenka ◽  
Radomir Cabala ◽  
Alice Exnerova ◽  
...  
Keyword(s):  
Sex Differences ◽  
Host Plant ◽  
Defensive Secretion ◽  
Milkweed Bug ◽  
Host Plant Effect ◽  
Plant Effect ◽  
Lygaeus Equestris

scholarly journals Chemical Constituents from the Whole Plant of Cuscuta reflexa

2020 ◽  
Vol 10 (5) ◽  
pp. 337-344
Author(s):  
Tin Thu Thu Aung ◽  
Meng-Yuan Xia ◽  
Pyae Phyo Hein ◽  
Rong Tang ◽  
Dong-Dong Zhang ◽  
...  
Keyword(s):  
Platelet Aggregation ◽  
Inhibitory Activity ◽  
Chemical Constituents ◽  
Platelet Activating Factor ◽  
Rabbit Platelet ◽  
Cuscuta Reflexa ◽  
Chemical Structures ◽  
Antiplatelet Aggregation ◽  
Whole Plant ◽  
Aggregation Activity

Abstract Two new 2H-pyran-2-one glucosides, cuscutarosides A (1) and B (2), and one new steroidal glucoside, 7β-methoxy-β-sitosterol 3-O-β-glucopyranoside (3), together with 12 known compounds (4–15) were isolated from the whole plant of Cuscuta reflexa (Convolvulaceae) collected from Myanmar. The chemical structures of these new compounds were elucidated based on extensive spectroscopic analysis. The antiobesity activity of these isolates was evaluated using porcine pancreatic lipase (PPL), and the antiplatelet aggregation activity was screened using rabbit platelets induced by thrombin, platelet-activating factor (PAF), arachidonate (AA), or collagen. 7β-Methoxy-β-sitosterol 3-O-β-glucopyranoside (3) showed weak PPL inhibitory activity. Cuscutaroside A (1), its acetylated derivative (1a), and scrophenoside B (8) showed weak inhibitory activity against rabbit platelet aggregation induced by collagen. Compound 1a also showed inhibitory activity against rabbit platelet aggregation induced by AA. Graphic Abstract

scholarly journals Feeding Responses of Japanese Beetle to Naturally Occurring Metabolites Found in Rosaceous Plants

1997 ◽  
Vol 15 (4) ◽  
pp. 222-227
Author(s):  
Cynthia A. Patton ◽  
Thomas G. Ranney ◽  
James D. Burton ◽  
James F. Walgenbach
Keyword(s):  
Host Plant ◽  
Plant Resistance ◽  
Host Plant Resistance ◽  
Chemical Constituents ◽  
Popillia Japonica ◽  
Coumaric Acid ◽  
Japanese Beetle ◽  
Naturally Occurring ◽  
Feeding Trials ◽  
Dose Responses

Abstract Endogenous allelochemicals can have a profound influence on host plant resistance to arthropod pests. This study evaluated 22 naturally-occurring compounds found in Rosaceous trees for their influence on feeding of adult Japanese beetles [Popillia japonica (Newman)]. Individual compounds were incorporated into artificial diets at concentrations from 0 to 100 mM. No-choice feeding trials were conducted over 24 hours. Four general trends were recognized among the dose responses: 1) no response: benzaldehyde, calcium oxalate, tannic acid, 2) stimulatory: rutin, 3) optimal peak: benzoic acid, phloridzin, quercetin, catechin, geraniol, arbutin, caffeic acid, chlorogenic acid, and 4) inhibitory: p-coumaric acid, eugenol, amygdalin, phloretin, naringenin, o-coumaric acid, arginine, asparagine, oxalic acid, and gallic acid. These results suggest that variation in chemical constituents and concentrations may have a strong influence on host plant resistance to Japanese beetles among Rosaceous plants.

scholarly journals Host plant effect on the activity of digestive enzymes of the gypsy moth caterpillars

2008 ◽  
pp. 127-142 ◽  
Author(s):  
Slobodan Milanovic ◽  
Jelica Lazarevic ◽  
Marija Mrdakovic ◽  
Milena Vlahovic ◽  
Zoran Miletic
Keyword(s):  
Host Plant ◽  
Gypsy Moth ◽  
Digestive Enzymes ◽  
Nutritive Value ◽  
Digestive Enzyme ◽  
Specific Protease ◽  
Digestive Enzyme Activities ◽  
Feeding Effects ◽  
Host Plant Effect ◽  
Metabolite Content

Insect growth and development depend on nutritive value and secondary metabolite content of their host plants. This influence may be exerted through changing the activity of digestive enzymes which further affects efficiency of conversion of ingested food. This paper represents the results of investigation of feeding effects on the leaves of three oak species (Quercus cerris, Q. robur and Q. petraea) on growth, development and digestive enzyme activities of the 4th instar gypsy moth larvae (Lymantria dispar L.). Compared to larvae fed on Q. cerris and Q. robur leaves, larvae fed on Q. petrea exhibited the lowest body mass, midgut protein content and specific protease activity. Specific amylase activity was significantly reduced in the midguts of larvae fed on Q. robur while host plant did not affect larval duration upon molting into the 4th instar. Concomitant chemical analyses of leaves given to the 2nd and 4th instar larvae was carried out in order to explain the obtained results.

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