The biology of Canadian weeds. 120. Neslia paniculata (L.) Desv.

Abstract

[441][442][443][444][445][446][447][448][449][450][451]. A review of biological information is provided for Neslia paniculata. Native to central Eurasia, this species is naturalized in other temperate regions of the northern hemisphere. In North America it is most abundant in Canada's prairie provinces, but has spread west and north to British Columbia, Alaska, Yukon and the Northwest Territories, and to scattered locations in eastern Canada and the northern United States. It is typically a summer annual weed of disturbed soils. Its growth habit and persistence in the seed bank have enabled it to spread as an adventive and to maintain its presence in cultivated areas. While it is present in relatively low frequency as a weed in most crops, its indehiscent seed pods can contaminate harvested crops and spread in seed commodities. The small size of its seed pods and the similarity of its seeds to those of canola and condiment mustard have led to its regulation as a significant contaminant of commercial seed. It is generally well controlled by herbicides (e.g., sulfonylureas, glyphosate, MCPA, bromoxynil, and 2, 4-D); however, a population resistant to metsulfuron-methyl, one of the Group 2 herbicides that inhibit acetolactate synthase (ALS), was found at a site in Alberta in 1998. Les auteurs ont passé en revue les données existantes sur la biologie de Neslia paniculata. Indigène dans le centre de l'Eurasie, cette espèce s'est acclimatée à diverses régions tempérées de l'hémisphère Nord. En Amérique, on la retrouve surtout dans les provinces des Prairies canadiennes, mais son aire s'est élargie vers l'ouest et le nord jusqu'en ColombieBritannique, en Alaska, au Yukon et dans les Territoires-du-Nord-Ouest, ainsi qu'à certains endroits de l'est du Canada et du nord des États-Unis. Cette adventice annuelle envahit habituellement les terrains perturbés l'été. Son type de développement et sa persistance dans le réservoir de semences expliquent pourquoi elle a réussi à devenir une adventice et à s'implanter dans les zones cultivées. Bien que relativement peu abondante dans la majorité des cultures, la neslie paniculée contamine parfois les produits de la récolte à cause de ses gousses indéhiscentes et pourrait se propager avec les semences des cultures grainières. Ses petites gousses et la ressemblance de ses semences avec celles du canola et de la moutarde ont nécessité sa réglementation comme important contaminant des semences commerciales. Les herbicides (à savoir, sulfonylurés, glyphosate, MCPA, bromoxynil et 2,4-D) sont généralement efficaces, mais en 1998, on a découvert en Alberta une population résistante au metsulfuron-méthyle, un des herbicides du Groupe 2 inhibant l'acétolactate synthase (ALS). Mots clés:Neslie paniculée, Neslia paniculata, biologie des mauvaises herbes, résistance aux herbicides, contaminant des semences NameNeslia paniculata (L.) Desv. -Ball mustard (Darbyshire et al. 2000), ball-mustard, common ball mustard, yellow weed, neslia (Crompton et al. 1988); neslie paniculée (Darbyshire et al. 20...

Fruit shape diversity in the Brassicaceae is generated by varying patterns of anisotropy

“…S2 " type="url"/> ). Spherical fruits are present in the Brassicaceae, such as Neslia paniculata ( Francis and Warwick, 2003 ), broadly matching the characteristics of this simple model.…”

“…The Brassicaceae family contains a richness of species with divergent fruit shapes. Some species have almost spherical fruits, such as Neslia paniculata ( Francis and Warwick, 2003 ), a close relative of Capsella . Others have rounded fruits that are flattened laterally, such as Lepidium campestre , or in a medial orientation, such as Alyssum maritimum ( Bowman, 2006 ) ( Fig.…”

Phytoalexins and Signalling Metabolites Produced in the Wild Crucifer Neslia Paniculata: Camalexins and Arabidopsides

“…N. paniculata co-exists with various crops, including canola and condiment mustard (B. juncea L.), causing seed contamination problems due to its abundance. Despite such a drawback, N. paniculata, the only known species within the genus Neslia, is of interest as a source of disease resistance genes to Alternaria black spot, a plant disease caused by Alternaria species (Francis and Warwick, 2003;Tewari and Conn, 1993).…”

White Leaf Spot Caused by Neopseudocercosporella capsellae: A Re-emerging Disease of Brassicaceae

“…The pathogen has a wide host range (Boerema and Verhoeven, 1977;Gudelj et al, 2004), infecting a variety of cultivated crucifers, including oilseed, and vegetable brassicas. Also, N. capsellae has been isolated from leaf lesions on "wild" or "weedy" crucifers such as wild radish (Raphanus raphanistrum) and wild turnip (Brassica rapa ssp sylvestris) (Marchionatto, 1947;Deighton, 1973;Morris and Crous, 1994;Francis and Warwick, 2003;Maxwell and Scott, 2008). It has also been recorded causing disease on false flax (Camelina sativa), a recently introduced oilseed crop in Europe (Föller and Paul, 2002), chinese cabbage, mustard type Brassica vegetables, and cauliflower (Lancaster, 2006).…”