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Evolutionary and ecological trends in the Neotropical cycad genus Dioon (Zamiaceae): An example of success of evolutionary stasis

Ecological Research, Volume 39, Issue 2, Page 131-158, March 2024.
Cycads represent an example of the success of evolutionary stasis. Despite its conservative nature, the cycad genus Dioon has been able to diversify due to phylogenetic, stochastic, and environmental factors associated with the biogeography of Mexico. Abstract Cycads represent an example of the success of evolutionary stasis. Despite their early origin,
José Said Gutiérrez‐Ortega +8 more
wiley +1 more source

The occurrence of coralloid roots on the South African species of the Cycadales and their ability to fix nitrogen symbiotically

South African Journal of Botany, 1986
Thirty-three species of Encephalartos, which include all the known species indigenous to the Republic of South Africa, together with Stangeria eriopus, were found to form coralloid roots. In all cases, specimens were found in which the coralloid roots were infected with Cyanobacteria (blue-green algae) and these roots in all cases reduced acetylene to ...
Grobbelaar, N., Hattingh, W., Marshall, J. +2 more
openaire +1 more source

The identification of the coralloid root endophytes of the southern African cycads and the ability of the isolates to fix dinitrogen

South African Journal of Botany, 1987
Forty-one isolates of the cyanobionts in the coralloid roots of 31 cycad species, which include all the species indigenous to the Republic of South Africa, were identified. One isolate (from Encephalartos hildebrandtii) appears to be a species of Calothrix. All the other isolates were identified as species of Nostoc. Twenty-eight isolates were assigned
Grobbelaar, N. +3 more
openaire +1 more source

Three coralloid species of the genus Trechispora (Trechisporales, Basidiomycota) in China: two newly discovered taxa and one reported for the first time. [PDF]