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"Pompom"
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Host range and impact of the stem- and leaf-deforming thrips, Liothrips tractabilis: a biological control agent for Campuloclinium macrocephalum, in South Africa
2015
We report on the host range and impact of Liothrips tractabilis Mound and Pereyra (Thysanoptera: Phlaeothripinae), the first biological control agent to be considered for Campuloclinium macrocephalum (Less.) DC. (Asteraceae) (pompom weed) in South Africa. Laboratory host-range tests were conducted on 45 Asteraceae species. Field host range studies included 16 Asteraceae species. Results of both laboratory tests and field host range data indicated that L. tractabilis is suitably host specific to C. macrocephalum and hence safe for release in South Africa. Laboratory impact studies on both seedlings and regrowth showed that, even under low inoculation densities, L. tractabilis had a significant impact on plant height, number of leaves, flower production and biomass. Based on the above data, permission for the release of the thrips was applied for, and in June 2013, granted by South African authorities. First releases of L. tractabilis were made in the summer of 2013/2014, and in November 2014 its establishment was confirmed.
Journal Article
Environmental requirements and host-specificity of Puccinia eupatorii, a potential biocontrol agent of Campuloclinium macrocephalum in South Africa
by
van Rooi Cicelia
,
Den Breeyen Alana
,
Retief Estianne
in
Biological control
,
Environmental requirements
,
Fungi
2016
Campuloclinium macrocephalum (pompom weed) is considered one of the most important invasive weeds in the summer rainfall regions of South Africa. Two rust fungi, Puccinia eupatorii and P. conoclinii, are recorded on pompom weed in South America where the weed originates. Urediniospores from infected C. macrocephalum leaf material collected in northern Argentina were found to be pathogenic to the South African pompom weed. Microscopic evaluation of urediniospores and teliospores identified this rust fungus as Puccinia eupatorii. Urediniospores germinated at an optimal temperature of 18 °C and at temperature required a minimum dew period of 6 h. Urediniospores germinated 3 h after inoculation on C. macrocephalum leaves with stomatal penetration occurring approximately 12 h after inoculation. After 48 h fungal hyphae were observed radiating out from the point of infection. Host-specificity testing of thirty Asteraceae species, including crop and indigenous plants, was undertaken. Puccinia eupatorii was found to only infect C. macrocephalum, while all other plant species tested were either highly resistant or immune. Prior to the release of the Argentinian isolate of P. eupatorii tested, a rust fungus was discovered on pompom weed in South Africa and identified, through sequencing, to be the same species. Puccinia eupatorii is currently prevalent in most areas invaded by pompom weed in South Africa.
Journal Article
Fashion: Senior Moment
2004
Fashion's feeling hugely affectionate—big matte-red lipstick kiss here—toward the silver-haired grandmère in her Harris tweeds and her swing coat. As Lynn Yaeger reports, the new old-fashioned means polish and refinement, head-to-toe.
Magazine Article
Vogue Point Of View: Ticket to Paradise
2004
On a private island in the South Seas, makeup mogul François Nars has created his own blue heaven. (What better showcase for the resort season's hottest tropical-escape clothes?)
Magazine Article
Fashion: Romantic Gestures
1990
The delicate vocabulary at work for evening: flamence skirts and dresses, lace stockings even the rose is a theme. All evoke Balenciaga. The beauty look is made-to-order femininity as eyes and lips take on deep, dramatic color and hair takes on elaborate decoration
Magazine Article
Dress for Less: The Color Scheme
1990
Now that bright color is acceptedfor the office, for weekends, for eveningit's changing the look of the entire wardrobe. Here, the essential pieces
Magazine Article
Vogue Point of View: Cloud Atlas
2007
This fall, designers are listening to Mother Nature, with surprising and elegant results.
Magazine Article
Fashion: Paris Couture: In the Grand Tradition
1994
In The Gra: After five years of elevating street looks to haute levels, designers are once again creating clothes that recall the couture's quintessentially glamorous roots. The recent Paris shows were filled with exquisite tailoring and heightened femininityheralding a revival of the real art of fashion
Magazine Article