Nuevo registro de micorriza arbuscular en Asterella chilensis (Aytoniaceae, Marchantiophyta), Patagonia, Argentina

COTTET, A.C.; MESSUTI, M.I.

BOLETíN DE LA SOCIEDAD ARGENTINA DE BOTáNICA

SOCIEDAD ARGENTINA DE BOTÁNICA

Lugar: Córdoba; Año: 2022 vol. 57 p. 3 - 7

0373-580X

Background and aims: The associations that are established between arbuscularmycorrhizae (AM) and bryophytes (Anthocerotophyta, Bryophyta and Marchantiophyta) play an important role in the development of this group of plants. In particular, the relationship between AM and Marchantiophyta has been studied previously in different species and regions of the world and, among other things, it is mentioned that colonization by fungi can differ in abundance and occurrence even in species of the same genus. The objective of this study is to present and characterize for the first time the colonization of AM in Asterella chilensis (Aytoniaceae).M&M: The examined material comes from collections made in steppe environments ofPatagonia, Argentina. The plants were conditioned, stained and analyzed accordingto specific techniques for bryophytes.Results: The mycorrhizal association in A. chilensis is described for the first time.A brief description and photographs of the characteristic structures of the AMare presented. The colonization percentage ranges from 35 to 38% and the AMcorresponds to the Paris type, characterized by the presence of aseptate hyphaeforming intracellular arbusculate coils.Conclusions: The association between AM and a livewort A. chilensis, describedhere, provides information of this type of associations in taxa and in harsh and littleknown environments.