Results 1 to 10 of about 5,791,746 (258)

Insecticidal activity of the crude extract from Epichloë bromicola against Rhopalosiphum padi [PDF]

open access: yesE3S Web of Conferences, 2020
Rhopalosiphum padi is a important pest in agricultural production. In order to reduce the use of chemical pesticides and improve the control effect, we reported the insecticidal activity of the crude extract from 20 strains Epichloë bromicola isolated ...
Guo Zhao-Ling   +3 more
doaj   +2 more sources

Design and Synthesis of Scopoletin Sulfonate Derivatives as Potential Insecticidal Agents

open access: yesMolecules, 2023
(1) Background: Scopoletin and scoparone, two naturally occurring coumarins, have garnered considerable attention and have been introduced to the market in China due to their high insecticidal efficacy and low toxicity.
Congmin Liu   +5 more
doaj   +1 more source

Insecticidal Activity against Myzus persicae of Terpinyl Acetate and Bornyl Acetate in Thuja occidentalis Essential Oil

open access: yesHorticulturae, 2022
Essential oils have insecticidal activity against several insects and are composed of numerous compounds. This study investigated the insecticidal effects of the Thuja occidentalis L.
Hyun-Jin Song   +6 more
doaj   +1 more source

Effects of Site-Directed Mutagenesis of Cysteine on the Structure of Sip Proteins

open access: yesFrontiers in Microbiology, 2022
Bacillus thuringiensis, a gram-positive bacteria, has three insecticidal proteins: Vip (vegetative insecticidal protein), Cry (crystal), and Sip (secreted insecticidal protein).
Lin Wang   +6 more
doaj   +1 more source

Stability is essential for insecticidal activity of Vip3Aa toxin against Spodoptera exigua

open access: yesAMB Express, 2022
Vegetative insecticidal proteins 3A (Vip3A) were important insecticidal proteins for control of lepidopteran pests. Previous study demonstrated that Vip3Aa and Vip3Ad showed significant difference in insecticidal activities against Spodoptera exigua ...
Bai-Wen Fu   +5 more
doaj   +1 more source

Semi-Synthesis of C-Ring Cyclopropyl Analogues of Fraxinellone and Their Insecticidal Activity Against Mythimna separata Walker

open access: yesMolecules, 2020
Fraxinellone (1) is a naturally occurring degraded limonoid isolated from Meliaceae and Rutaceae plants. As a potential natural-product-based insecticidal agent, fraxinellone has been structurally modified to improve its activity.
Xiao-Jun Yang   +3 more
doaj   +1 more source

Larvicidal, leishmanicidal, insecticidal and anthelmintic effects of Sterculia diversifolia stem bark and leaf

open access: yesBangladesh Journal of Pharmacology, 2020
The present study was conducted to evaluate the stem bark and leaf of Sterculia diversifolia for larvicidal, leishmanicidal, insecticidal and anthelmintic activities.
Fazle Rabbi, Amir Zada, Amna Nisar
doaj   +1 more source

Synthesis and insecticidal activity of diacylhydrazine derivatives containing a 3-bromo-1-(3-chloropyridin-2-yl)-1H-pyrazole scaffold

open access: yesChemistry Central Journal, 2017
Background The diacylhydrazine derivatives have attracted considerable attention in recently years due to their simple structure, low toxicity, and high insecticidal selectivity.
Yanyan Wang   +9 more
doaj   +1 more source

Isolation, Identification and Insecticidal Activity of the Secondary Metabolites of Talaromyces purpureogenus BS5

open access: yesJournal of Fungi, 2022
The fungal strain BS5 was isolated from a soil sample collected in the Tibetan Plateau, which displayed good insecticidal activity and was identified as Talaromyces purpureogenus based on morphological and molecular analysis. This study aimed to evaluate
Ying Yue   +7 more
doaj   +1 more source

Characterization of a Chitin-Binding Protein from Bacillus thuringiensis HD-1. [PDF]

open access: yesPLoS ONE, 2013
Strains of Bacillus thuringiensis produce insecticidal proteins. These strains have been isolated from diverse ecological niches, such as soil, phylloplane, insect cadavers and grain dust.
Naresh Arora   +4 more
doaj   +1 more source

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