Cotton Response to CGA-362622 Applied Alone and in Combination with Selected Insecticides

Minton, Brad W.; Senseman, Scott A.; Cothren, J. Tom; Chandler, James M.; Wells, Jerry W.

doi:10.1614/wt-04-213r

Cited by 4 publications

(3 citation statements)

References 24 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Similar studies have shown that malathion applied in combination with other herbicides, such as pyrithiobac, increased cotton injury with no adverse effects on yield (Allen and Snipes 1995;Snipes and Seifert 2003;Minton et al 2005). Postemergence applications of malathion mixed with trifloxysulfuron applied to 4-to 5-leaf cotton increased phytotoxicity 10% at 4 DAT compared with trifloxysulfuron alone (Minton et al 2008).…”

Section: Cotton-response Field Experimentsmentioning

confidence: 83%

Response of dicamba-resistant Palmer amaranth and cotton to malathion applied in conjunction with dicamba

Foster,

Dotray,

Culpepper

et al. 2023

Weed Technol

View full text Add to dashboard Cite

Cotton and soybean growers were offered new technologies in 2016, expanding in-crop herbicide options to include dicamba or 2,4-D. Within three years of commercialization, dicamba use in these crops increased ten-fold and growers began to report Palmer amaranth escapes in dicamba-tolerant production systems in western Tennessee. In 2020, Palmer amaranth seed was collected from eight Tennessee locations where growers witnessed poor control following dicamba. Greenhouse experiments were conducted to evaluate the response of these Palmer amaranth populations to dicamba. In 2021, field experiments were conducted on two tentative dicamba-susceptible populations in Georgia, on three confirmed dicamba-resistant populations in Tennessee, and on a tentative dicamba-susceptible population in Texas to evaluate cotton response following dicamba and to examine if malathion insecticide (a cytochrome P450 inhibitor) would improve weed control and not reduce cotton yield when applied in conjunction with dicamba. Palmer amaranth populations collected in 2020 survived dicamba in the greenhouse at 1, 2, and 4 times the labeled rate. There was 15 to 26% survival exhibited by five Palmer amaranth populations to the labeled dicamba rate (560 g ha-1) in the greenhouse. These findings were reinforced in the field when research on three of those populations in 2021 showed 55% control with the labeled dicamba rate and 69% control with 2 times the labeled rate. This demonstrates the dicamba resistance allele or alleles were passed between generations. This result was not consistent in the Macon County or Worth County, GA locations where malathion improved dicamba control of 15- to 38-cm tall Palmer amaranth. Cotton injury was observed when malathion was applied in combination with dicamba. These results further document the evolution of dicamba-resistant Palmer amaranth in Tennessee. Moreover, the non-reversal of resistance phenotype by malathion may suggest that the resistance mechanism is something other than metabolism.

show abstract

Section: Cotton-response Field Experimentsmentioning

confidence: 83%

Response of dicamba-resistant Palmer amaranth and cotton to malathion applied in conjunction with dicamba

Foster,

Dotray,

Culpepper

et al. 2023

Weed Technol

View full text Add to dashboard Cite

show abstract

“…These include organophosphorus insecticides, which can inhibit the cytochrome P450 enzymes group (Tardif, Powles, 1999). Studies report a negative interaction between acetolactate synthase (ALS)-inhibiting herbicides and organophosphorus insecticides in maize (Diehl et al, 1995;Nicolai et al, 2006), tomatoes (Buker et al, 2004), and cotton (Minton et al, 2005), resulting in reduced herbicide tolerance.…”

Section: Discussionmentioning

confidence: 99%

Use of inhibitors and protectors in the tolerance of white oat cultivars to the penoxsulam herbicide

Xavier¹,

Trezzi²,

Oliveira³

et al. 2023

Advances in Weed Science

View full text Add to dashboard Cite

“…Since related P450 genes have been shown to confer herbicide resistance by catalyzing chemical modifications to herbicides, it is not surprising to have found that a P450 gene is necessary for TFS tolerance in cotton. Indeed cotton cultivars, including STV474, were reported to exhibit increased damage when TFS is mixed with malathion, a P450 inhibitor, which could be taken as evidence of P450 mediated metabolism of the TFS herbicide in cotton [ 43 , 44 ].…”

Section: Discussionmentioning

confidence: 99%

The P450 gene CYP749A16 is required for tolerance to the sulfonylurea herbicide trifloxysulfuron sodium in cotton (Gossypium hirsutum L.)

et al. 2018

View full text Add to dashboard Cite

BackgroundWeed management is critical to global crop production and is complicated by rapidly evolving herbicide resistance in weeds. New sources of herbicide resistance are needed for crop plants so that applied herbicides can be rotated or combined to thwart the evolution of resistant weeds. The diverse family of cytochrome P450 proteins has been suggested to be a source of detoxifying herbicide metabolism in both weed and crop plants, and greater understanding of these genes will offer avenues for crop improvement and novel weed management practices.ResultsHere, we report the identification of CYP749A16 (Gh_D10G1401) which is responsible for the natural tolerance exhibited by most cotton, Gossypium hirsutum L., cultivars to the herbicide trifloxysulfuron sodium (TFS, CGA 362622, commercial formulation Envoke). A 1-bp frameshift insertion in the third exon of CYP749A16 results in the loss of tolerance to TFS. The DNA marker designed from this insertion perfectly co-segregated with the phenotype in 2145 F2 progeny of a cross between the sensitive cultivar Paymaster HS26 and tolerant cultivar Stoneville 474, and in 550 recombinant inbred lines of a multi-parent advanced generation inter-cross population. Marker analysis of 382 additional cotton cultivars identified twelve cultivars containing the 1-bp frameshift insertion. The marker genotypes matched perfectly with phenotypes in 188 plants from the selected twelve cultivars. Virus-induced gene silencing of CYP749A16 generated sensitivity in the tolerant cotton cultivar Stoneville 474.ConclusionsCYP749A16 located on chromosome D10 is required for TFS herbicide tolerance in cotton. This finding should add to the repertoire of tools available to farmers and breeders for the advancement of agricultural productivity.Electronic supplementary materialThe online version of this article (10.1186/s12870-018-1414-2) contains supplementary material, which is available to authorized users.

show abstract

Cotton Response to CGA-362622 Applied Alone and in Combination with Selected Insecticides

Cited by 4 publications

References 24 publications

Response of dicamba-resistant Palmer amaranth and cotton to malathion applied in conjunction with dicamba

Response of dicamba-resistant Palmer amaranth and cotton to malathion applied in conjunction with dicamba

Use of inhibitors and protectors in the tolerance of white oat cultivars to the penoxsulam herbicide

The P450 gene CYP749A16 is required for tolerance to the sulfonylurea herbicide trifloxysulfuron sodium in cotton (Gossypium hirsutum L.)

Contact Info

Product

Resources

About