Vegetative Reproduction of Mosses

Best, G. N.

doi:10.1639/0007-2745(1901)4[1:vrom]2.0.co;2

Cited by 6 publications

(3 citation statements)

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“…Examinations of moss character states listed in regional and national floras have revealed a strong association between separated sexes and the ability to produce specialized asexual propagules (Longton and Schuster 1983; During 2007). All mosses are considered capable of some asexual reproduction (Best 1901; Miller and Ambrose 1976). Usually, this involves part of the gametophyte breaking off and forming a new individual under favorable conditions.…”

mentioning

confidence: 99%

Correlated Evolution of Sexual System and Life-History Traits in Mosses

2009

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In mosses, separate and combined sexes are evolutionarily labile, yet factors selecting for this variation are unknown. In this study, we investigate phylogenetic correlations between sexual system and five life-history traits (asexual reproduction, chromosome number, gametophore length, spore size, and seta length). We assigned states to species on a large-scale phylogeny of mosses and used maximum likelihood analyses to test for the correlations and investigate the sequence of trait acquisition. Mosses in lineages with separate sexes were significantly more likely to be large, whereas those in lineages with combined sexes had higher chromosome numbers. Moreover, evolutionary transitions to separate sexes were more likely to occur in lineages with small spores. There was no support for a correlation between asexual reproduction and separate sexes. These results suggest that sexual system evolution is influenced by traits affecting mate availability and the dispersal of gametes and spores, and provides evidence for the existence of syndromes of life-history traits in mosses.

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confidence: 99%

Correlated Evolution of Sexual System and Life-History Traits in Mosses

2009

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“…Since plants of this new species occur in peatland or montane elfin forest at high altitudes (3143–3840 m), where the wind is strong, we speculate that the fragile leaf tips can help D. hengduanensis spread and reproduce. This process may aid this moss to occupy disturbed habitats by wind, snow and rain quickly as other vegetative-reproductive taxa (Best 1901). Obviously, the spread ability of the leaf tips is still not comparable to that of the spores (Glime 2017).…”

Section: Discussionmentioning

confidence: 99%

Dicranum hengduanensis (Dicranaceae, Bryophyta), a new species with fragile leaves from the Hengduan Mountains in China

Huang

et al. 2023

The Bryologist

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Dicranum is one of the most diverse and widespread genera within the Dicranaceae. Species diversity and distribution in this genus, however, remain not well known. During our recent expeditions to the Hengduan Mountains in China, we found an interesting moss referrable to Dicranum species that is characterized by the stiff and fragile leaves, bistratose alar cells, and by the costal cross-section in the lower portion without stereid bands with one layer of cells above and below guide cells. Morphological and molecular-phylogenetic analyses based on five chloroplast markers (rpoB, rps4-trnT, rps19-rpl2, trnH-psbA, and trnL-trnF) and one nuclear marker (ITS region) suggest that this unknown moss represents a new species here described as D. hengduanensis. The plastome of this new species presented in this study is the first complete plastome of Dicranum.

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“…La importancia de estas estructuras radica en que, por medio de ellas, las colonias de musgos logran mantener su presencia cuando no hay reproducción sexual. La ausencia de propágulos especializados en las especies mexicanas no representa un obstáculo serio para la permanencia de las colonias pues todos los musgos son capaces de reproducirse asexualmente a partir de cualquier fragmento de su gametofito (Best, 1901;Glime, 2007;Hartmann y Jenkins, 1984;Longton, 1994;Longton y Schuster, 1983;Wyatt, 1982Wyatt, , 1994. En contraste, en Alemania 86% de las especies que producen yemas son dioicas, mientras que en Japón son más del 20% y en América del Norte 76% (Glime, 2007).…”

Section: Discussionunclassified

La condición sexual en los musgos mexicanos

Peña-Retes

Delgadillo-Moya

2018

Rev.Mex.Biodiv.

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Resumen Para determinar la proporción de musgos dioicos o monoicos en la flora mexicana se preparó una base de datos de las 983 especies conocidas para México. Además se obtuvo información sobre formación de esporofitos y de propágulos para 829 especies. De este número, 458 (55%) especies son dioicas y 371 (45%) son monoicas. La condición sexual de las 154 especies remanentes es polioica, incierta o no existe información precisa. La tendencia a formar esporofitos es mayor en las especies monoicas, pero los musgos dioicos forman tanto esporofitos como propágulos en mayor proporción que los monoicos, pero la proporción de propágulos y esporofitos varía en las 13 familias más importantes de la flora mexicana. La expresión sexual en los musgos mexicanos sigue los patrones básicos de otras regiones en el mundo. Sin embargo, la investigación por familias puede ser ventajosa para determinar patrones particulares. En cada familia, se debe buscar la relación de la condición sexual con microhábitats, con la distribución geográfica local y con la producción de esporofitos y de propágulos.

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Vegetative Reproduction of Mosses

Cited by 6 publications

References 0 publications

Correlated Evolution of Sexual System and Life-History Traits in Mosses

Correlated Evolution of Sexual System and Life-History Traits in Mosses

Dicranum hengduanensis (Dicranaceae, Bryophyta), a new species with fragile leaves from the Hengduan Mountains in China

La condición sexual en los musgos mexicanos

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