Fungi associated with Aizoaceae seed in the Succulent Karoo

Show simple item record Pieterse, Zelda Aveling, T.A.S. (Terry) Jacobs, A. 2019-04-04T05:25:42Z 2018-06
dc.description ISHS Acta Horticulturae 1204: VII International Symposium on Seed, Transplant and Stand Establishment of Horticultural Crops - SEST2016. en_ZA
dc.description.abstract The Aizoaceae, commonly known as mesembs or “ice plants”, is a plant family endemic to Namaqualand, an area inside the Succulent Karoo biodiversity hotspot in South Africa. The more than 1800 unique mesembs are in part characterised by their hygrochastic seed capsules dispersing their seed by jet action. Six capsule types: Mesembryanthemum-, Delosperma-, Drosanthemum-, Lampranthus-, Ruschia- and Leipoldtia-type are distinguished by differences in funicles, covering membranes and closing bodies. With the existence of microbial endemism, now widely recognised, research into community ecology in the Succulent Karoo is needed to enable proper conservation. Sadly the microbial life associated with Aizoaceae has received little attention, Alternaria, Colletotrichum and Fusarium, have however been isolated from the halophyte Sesuvium portulacastrum, one of the few species from Aizoaceae but not endemic to South Africa. Fungi are known to aid in germination, seedling establishment, growth, water relations and nutrition in the Cactaceae (a family closely related to Aizoaceae). We believe that fungi may play a role in the ability of Aizoaceae to thrive in Namaqualand due to their specialization in the form of thick-walled spores that remain viable and have the ability to grow slow even at extreme aridity. We have isolated species of Alternaria, Aspergillus, Bipolaris, Cladosporium, Fusarium and Talaromyces from seeds of common mesemb species from Namaqualand. This is the first report of fungi associating with the specialised propagative material of Aizoaceae. en_ZA
dc.description.department Forestry and Agricultural Biotechnology Institute (FABI) en_ZA
dc.description.department Plant Production and Soil Science en_ZA
dc.description.embargo 2019-06-01
dc.description.librarian hj2019 en_ZA
dc.description.uri en_ZA
dc.identifier.citation Pieterse, Z., Aveling, T.A.S. & Jacobs, A. 2018, 'Fungi associated with Aizoaceae seed in the Succulent Karoo', Acta Horticulturae, vol. 1204, pp. 177-185. en_ZA
dc.identifier.issn 0567-7572
dc.identifier.other 10.17660/ActaHortic.2018.1204.23
dc.language.iso en en_ZA
dc.publisher International Society for Horticultural Science en_ZA
dc.rights © 2018 International Society for Horticultural Science. The original publication is available at en_ZA
dc.subject Arid en_ZA
dc.subject Biodiversity en_ZA
dc.subject Capsule en_ZA
dc.subject Hotspot en_ZA
dc.subject Hygrochastic en_ZA
dc.subject Mesembs en_ZA
dc.subject Seed-borne en_ZA
dc.subject South Africa (SA) en_ZA
dc.title Fungi associated with Aizoaceae seed in the Succulent Karoo en_ZA
dc.type Postprint Article en_ZA

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