Uptake and transportation behavior of a new fungicidal agent LH-2010A in cucumber plants

Abstract

The efficacy of a new fluorinated benzamide compound LH-2010A against Pseudoperonospora cubensis and its uptake-translocate behavior in cucumber plants were studied. Calculated EC 50 was 6.70 µg/mL, whereas fluopicolide was 7.67 µg/mL. LH-2010A was absorbed by plants and translocated to other sites. Furthermore, the downward transportation observed was different from fluopicolide. The absorption of LH-2010A by cucumber roots was inhibited by low temperature, respiratory inhibitors, sucrose and amino acids indicating that the absorption is an active process.

Synthesis and application of trifluoromethylpyridines as a key structural motif in active agrochemical and pharmaceutical ingredients

“…8, it has a chemical structure very similar to the preceding fungicide, fluopicolide, but its EC 50 against Pseudoperonospora cubensis is relatively low, and the observed downward transportation is different from that of fluopicolide. 86) A nematicidal effect has also been reported for fluopimomide. 87) 5-(Trifluoromethyl)pyridine is incorporated as a substructure as well as fluopicolide, whereas the substituents on the benzene ring are characteristic.…”

Transportation behaviour of fluopicolide and its control effect against Phytophthora capsici in greenhouse tomatoes after soil application

“…The extraction and purification of fluopicolide from tomato roots, leaves and stems for residue analysis were carried out according to the procedure reported by Omirou et al and Zhang et al , with some modification. After it had been chopped and thoroughly blended, the sample (5 g) was ground in a mortar with ethyl acetate (25 mL).…”

“…The upward transportation behaviour and metabolic products of fluopicolide after soil application have been demonstrated in potato, grape and lettuce . Moreover, its one‐way transportation has been reported in cucumber; that is, fluopicolide could be absorbed by cucumber roots from aqueous solutions, but no fluopicolide could be detected in cucumber roots after leaf spraying . However, there is limited information concerning the control efficiency of fluopicolide on Phytophthora blight in tomato plants, especially via soil application.…”

Use of Lentinan and Fluopimomide to Control Cotton Seedling Damping-Off Disease Caused by Rhizoctonia solani

“…Moreover, many resistance proteins against R. solani infection have been identified, such as enzymes in the glycolytic pathway, chitinase and glutathione peroxidase [18]. Furthermore, fluopimomide, (N-(3-chloro-5-trifluoromethyl-pyridin-2-ylmethyl-2,3,5,6-tetrafluoro-4-methoxy-benzamide)), a new fungicide released by Shandong Sino-Agri Union Biotechnology Co. Ltd., Jinan, China [19], can effectively control diseases caused by oomycete pathogens [20], such as Meloidogyne incognita in tomato [21] and cucumber [22].…”

“…This will enhance cotton production as well as quality of cotton. [19], can effectively control diseases caused by oomycete pathogens [20], such as Meloidogyne incognita in tomato [21] and cucumber [22].…”