The potential future roles of natural compounds and microbial bioherbicides in weed management in crops

Duke, Stephen O.; Pan, Zhiqiang; Bajsa-Hirschel, Joanna; Boyette, C. Douglas

doi:10.51694/AdvWeedSci/2022;40:seventy-five003

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REVIEW ARTICLE, SPECIAL ISSUE • Adv Weed Sci 40 (spe1) • 2022 • https://doi.org/10.51694/AdvWeedSci/2022;40:seventy-five003 copy

The potential future roles of natural compounds and microbial bioherbicides in weed management in crops

Authorship SCIMAGO INSTITUTIONS RANKINGS

Abstract

There is a popular demand for more natural means of pest management, including weed management, as well as a demand by farmers for herbicides with new chemistries and/or new modes of action to which current weed resistances do not apply. Natural compounds offer a source compounds that can either meet these needs in their natural state or as templates for herbicides with better physicochemical properties for field use. In some cases, simply identifying a good herbicide target site with a natural phytotoxin can be valuable, even though that compound is not used as a template for new herbicides. Compared to insecticides and fungicides, natural compounds have been under-utilized for herbicides. Despite their need, living, microbial biocontrol agents have had little impact on weed management in crops, despite decades of research to discover and develop such products. Management of insect and plant pathogens with microbial biopesticides has been much more successful. The reasons for this and possible solutions are discussed. Killed microbial preparations containing potent phytotoxins avoid some of the issues with live microbes, and such products are under development. This type of product can also offer more than one new mode of action in a single preparation. Precision and smart spray systems can improve the economics of both natural product-based herbicides and microbial bioherbicides.

Herbicide; microbial bioherbicide; mode of action; mycoherbicide; natural phytotoxin

Microbe & Ref.	Weed target(s) & Status	Trade name	Year of Introduction or registration
Alternaria cassia Bannon 1988Bannon JS. CASST™ herbicide (Alternara cassia): a case history of a mycoherbicide. Am J Alt Agric. 1988;3(2-3):73-6. Available from: https://doi.org/10.1017/S0889189300002216 https://doi.org/10.1017/S088918930000221...	Cassia obtusifolia C. coccidentalis Crotalaria spectabilis Never commercialized	Casst™	never
Alternaria destruens Bewick et al. 2000Bewick TA, Porter JC, Ostrowski RC. Smoler™: a bioherbicide for suppression of dodder (Cuscuta spp.). Proceedings of 53rd Annual Meeting of South Weed Science Society; Tulsa, United States of America. Westminster: South Weed Science Society; 2000. p. 152.	Cusucta spp. Discontinued	Smolder™	2005
Chondrostereum pupureum Hintz 2007Hintz W. Development of Chondrostereum purpureum as a mycoherbicide for deciduous brush control. In: Vincent CC, Goettel M, Lazarovits G, editors. Biological control: a global perspective. Wallingford: CABI; 2007. p. 284-90.	Populus and Alnus spp. Unknown	Chontrol™	2004
Colletotrichum acutatum Morris 1989Morris MJ. A method for controlling Hakea sericea Shrad. Seedlings using the fungus Colletotrichum gleoeoporoides (Penz.) Sacc. Weed Res. 1989;29(6):449-54. Available from: https://doi.org/10.1111/j.1365-3180.1989.tb01317.x https://doi.org/10.1111/j.1365-3180.1989...	Hakea sericea Discontinued	Hakatak™	1990
Colletotrichum gloeosporiodides f. sp. aeschynomeneCartwright et al. 2010Cartwright K, Boyette D, Roberts M. Lockdown: Collego bioherbicide gets a second act. Phytophathology. 2010;100:S162.	Aeshynomene vigrinica Available on demand	Collego®	1982
Colletotrichum gloeosporiodides f. sp. malvaeBoyetchko et al. 2007Boyetchko SM, Bailey KL, Hynes RK, Peng G. Development of biomal. In: Vincent C, Goettel MS, Lazarovits G, editors. Biological control: a global perspective. Wallingford: CABI; 2007. p. 274-83.	Acacia mearnsii and A. pycnantha Discontinued	Stumpout™	1997
Cylindrobasidium leave Morris et al. 1999Morris MJ, Wood AR, Breeÿen A. Plant pathogens and biological control of weeds in South Africa: a review of projects and progress during the last decade. Afr Entomol Mem. 1999;1:129-37.	Acacia mearnsii and A. pycnantha Discontinued	Stumpout™	1997
Phoma macrostoma Bailey et al. 2011Bailey KL, Pitt WM, Falk S, Derby J. The effects of Phoma macrotoma on nontarget plant and target weed species. Biol Control. 2011;58(3):379-86. Available from: https://doi.org/10.1016/j.biocontrol.2011.06.001 https://doi.org/10.1016/j.biocontrol.201...	many broadleaf weed species Available	Bio-Phoma™	2016
Phytophthora palmivora Ridings 1986Ridings WH. Biological control of strangler vine in citrus: a researchers view. Weed Sci. 1986;34(Suppl. 1):31-2. Available from: https://doi.org/10.1017/S004317450006834X https://doi.org/10.1017/S004317450006834...	Morrentia oderata Discontinued	DeVine®	1982
Pseudomonas fluorescens Kennedy et al. 2001Kennedy AC, Johnson BN, Stubbs TL. Host range of a deleterious rhizobacterium for biological control of downy brome. Weed Sci. 2001;49(6):792-7. Available from: https://doi.org/10.1614/0043-1745(2001)049[0792:HROADR]2.0.CO;2 https://doi.org/10.1614/0043-1745(2001)0...	Bromus tectorum Discontinued	D7®	2014
Puccinia canaliculata Phatak et al. 1983Phatak SC, Sumner DR, Wells HD, Bell DK, Glaze NC. Biological control of yellow nutsedge with the indigenous rust fungus Puccinia canaliculate. Science. 1983;219(4591):1446-47. Available from: https://doi.org/10.1126/science.219.4591 https://doi.org/10.1126/science.219.4591...	Cyperus esculentus Discontinued	Dr. Biosedge™	1987
Puccinia thlaspeos Knopp et al. 2002Knopp BR, Hansen DR, Thomsen SV. Establishment and dispersal of Puccinia thlaspeos in field populations of Dyer’s woad. Plant Dis. 2002;86(3):241-6. Available from: https://doi.org/10.1094/PDIS.2002.86.3.241 https://doi.org/10.1094/PDIS.2002.86.3.2...	Isatis tinctorial Discontinued	Woad Warrior®	2002
Sclerotina minor Watson2018Watson AK. Microbial herbicides. In:Korres NE, Burgos NR, Duke SO, ditors. Weed control: sustainability, hazards and risks in cropping systems worldwide. Boca Raton: CRC; 2018. p. 133-52.	Taraxacum officinale Discontinued	Sarritor®	2009
Streptomyces scabies O’Sullivan et al. 2015O’Sullivan J, van Acker R, Grohs R, Riddle R. Improved herbicidal efficacy for organically grown vegetables. Org Agric. 2015;5(4):315-22. Available from: https://doi.org/10.1007/s13165-015-0107-5 https://doi.org/10.1007/s13165-015-0107-...	several grass and broadleaf weeds Never commercialized	Opportune™	2012
Tobacco mild green mosaic vírus Charudattan & Hiebert 2007Charudattan R, Hiebert E. A plant virus as a bioherbicide for tropical soda apple, Solanum viarum. Outlooks Pest Manag. 2007;18(4):167-71. Available from: https://doi.org/10.1564/18aug07 https://doi.org/10.1564/18aug07...	Solanum viarum Available	SolviNix™	2014
Xanthomonas campestris pv. poaeImaizaumi et al. 1999Imaizaumi S, Honda M, Fujimori T. Effect of temperature on the control of annual bluegrass (Poa annua L.) with Xanthomonas campestris pv. poae (JT-P482). Biol Control. 1999;16(1):13-7. Available from: https://doi.org/10.1006/bcon.1999.0728 https://doi.org/10.1006/bcon.1999.0728...	Poa annua Discontinued?	Camperico™	1997
Several fungi Gale & Goutler 2013	Parkinsonia aculeate Available	Di-Bak®	2019

Advantage	Disadvantage
Low development cost	Narrow host range
Low cost of regulatory approval	Short shelf life
Good public acceptance	Special storage conditions
No chemical residues	Special formulation an application technology
Narrow host range	Required microenvironment for infectivity
Approved for organic farming	Quality control issues
No evolved resistance yet	Relatively expensive
Low mammalian and ecotoxicity	Efficacy is usually poorer than chemical herbicides
	Slower than chemical herbicides

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[1] * Corresponding author: <sduke@olemiss.edu>