Chlorsulfuron resistant transgenic tobacco as a tool for broomrape control

Slavov, S.; Valkov, Vladimir Totev; Batchvarova, R.; Atanassova, S.; Alexandrova, M.; Atanassov, A.

doi:10.1007/s11248-004-8081-9

Cited by 15 publications

(9 citation statements)

References 17 publications

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“…The herbicide would pass through the plant and flow into the hidden parasite; it is essential for this mode of action that the host plant does not metabolise the herbicide. This concept has been successfully applied with several crops (Joel et al, 1995;Surov et al, 1998;Aviv et al, 2002;Slavov et al, 2005). Transgenic crops may pose food safety issues through the expression of the new gene in the crop plant.…”

Section: Genetic Engineering Of Herbicide-resistance Cropsmentioning

confidence: 99%

Understanding Orobanche and Phelipanche–host plant interactions and developing resistance

et al. 2009

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Summary Orobanche and Phelipanche spp. (broomrapes) are parasitic plants that can be responsible for devastating losses in several important crops. The development of resistant cultivars is one of the key strategies in the fight against this pest. However, the nature of resistance is complex and the basis of the interaction between the host and the parasite is still largely unknown. Despite the progress achieved during the last century through breeding programmes, sources of resistance are often scarce (e.g. the legumes). The resistance that is available is often not durable, with field resistance being overcome by new races of the parasite (e.g. sunflower). This review summarises efforts made to improve the resistance of crop hosts for broomrapes through classical breeding programmes and looks forward to the integration of new knowledge generated from molecular and morphological studies. Emphasis is given to the need for a multidisciplinary approach to achieve success, ranging from improved field phenotyping to genetic and biotechnological studies. All components are necessary to understand this particular and characteristic interaction: a plant parasitising another plant.

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Section: Genetic Engineering Of Herbicide-resistance Cropsmentioning

confidence: 99%

Understanding Orobanche and Phelipanche–host plant interactions and developing resistance

et al. 2009

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“…Aviv et al (2002) engineered a mutant ALS gene into carrot, allowing the control of broomrape by imazapyr (an imidazolinone ALS inhibitor). Several tobacco cultivars transformed with a mutant acetohydroxy acid synthase (AHAS) 3R gene (isolated from a sulfonylurearesistant Brassica napus cell line) were resistant to the herbicide chlorsulfuron (Glean®, DuPont; Slavov et al 2005). The effect of chlorsulfuron on broomrape was clearly demonstrated: A very low percentage (from 0.1 to 4%) of its active ingredient that reached the plant roots was sufficient to kill the parasite at an early developmental stage after two treatments (Slavov et al 2005).…”

Section: New Biotechnological Approaches To Parasitic Weed Controlmentioning

confidence: 99%

Conventional and biotechnological approaches for control of parasitic weeds

Aly

2007

In Vitro Cell.Dev.Biol.-Plant

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On a worldwide basis, parasitic weeds represent one of the most destructive and intractable problems to agricultural production in both developed and developing countries. About 20 families (3,000-5,000 species) of higher plants are parasitic on the plant kingdom and may cause production losses of 30-80% in staple food and industrial crops on every continent. Compared with the other weeds, parasitic weeds are difficult to control by conventional means because of their life style: Parasites are intimately involved with the host and have so much metabolic overlap with the host that differential treatments are very difficult to develop. In some cases, the parasites are closely associated to the host root, concealed underground, and undiagnosed until they irreversible damage the crop. Several different approaches (cultural, mechanical, chemical, use of resistant varieties, and biological) to control parasitic weeds are currently in use, but are only partially successful. Recent reviews have covered the physiology and interactions between parasitic plants and their hosts, taxonomy, and the biology and classical control of parasitic weeds. The current review will discuss why alternative methods are needed to control parasitic weeds and will summarize conventional and new biotechnologybased control measures against the major world pests Striga, Orobanche, Cuscuta, and mistletoes (Phoradendron and Viscum genera). Effectiveness, advantages and disadvantages, environment safety, and simplicity of these new biotechnological methods will be reviewed.

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“…Subsequently, Orobanche was readily controlled on transgenic glyphosate‐resistant tomato 19. Another group generated their own chlorsulfuron‐resistant tobacco,20 and achieved the same results as had previously been obtained 18. Based on these successes, potatoes were genetically engineered with the sul gene conferring asulam resistance,21 and carrots with ALS resistance22 for Orobanche control.…”

Section: Target‐site Resistancesmentioning

confidence: 71%

Crops with target‐site herbicide resistance for Orobanche and Striga control

Gressel

2009

Pest Management Science

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It is necessary to control root parasitic weeds before or as they attach to the crop. This can only be easily achieved chemically with herbicides that are systemic, or with herbicides that are active in soil. Long-term control can only be attained if the crops do not metabolise the herbicide, i.e. have target-site resistance. Such target-site resistances have allowed foliar applications of herbicides inhibiting enol-pyruvylshikimate phosphate synthase (EPSPS) (glyphosate), acetolactate synthase (ALS) (e.g. chlorsulfuron, imazapyr) and dihydropteroate synthase (asulam) for Orobanche control in experimental conditions with various crops. Large-scale use of imazapyr as a seed dressing of imidazolinone-resistant maize has been commercialised for Striga control. Crops with two target-site resistances will be more resilient to the evolution of resistance in the parasite, if well managed.

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Chlorsulfuron resistant transgenic tobacco as a tool for broomrape control

Cited by 15 publications

References 17 publications

Understanding Orobanche and Phelipanche–host plant interactions and developing resistance

Understanding Orobanche and Phelipanche–host plant interactions and developing resistance

Conventional and biotechnological approaches for control of parasitic weeds

Crops with target‐site herbicide resistance for Orobanche and Striga control

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