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Variation and control of growth-form in the moss Hylocomium splendens

Ross, S E; Callaghan, T V; Sonesson, Mats LU and Sheffield, E (2001) In Journal of Bryology 23. p.283-292
Abstract
The moss Hylocomium splendens has both sympodial and monopodial forms of growth. One aim of this study was to document the growth-form of shoots from different populations. A further aim was to discover the extent to which genetic or environmental factors determine whether monopodial or sympodial growth-form is predominant in a population. Switching between growth-forms within shoots occurs in most populations. Populations in forest habitats in temperate to mid-Arctic environments have predominantly sympodial shoots whereas shoots of populations from tundra habitats, in high-Arctic environments or at high altitudes, are predominantly monopodial. Transplant experiments showed that sympodial and monopodial shoots can respond plastically, by... (More)
The moss Hylocomium splendens has both sympodial and monopodial forms of growth. One aim of this study was to document the growth-form of shoots from different populations. A further aim was to discover the extent to which genetic or environmental factors determine whether monopodial or sympodial growth-form is predominant in a population. Switching between growth-forms within shoots occurs in most populations. Populations in forest habitats in temperate to mid-Arctic environments have predominantly sympodial shoots whereas shoots of populations from tundra habitats, in high-Arctic environments or at high altitudes, are predominantly monopodial. Transplant experiments showed that sympodial and monopodial shoots can respond plastically, by changing growth-form to some extent in different environments, and that high nutrient availability is an important environmental factor in promoting sympodial growth-form. However, even after 14 years, transplants did not show the same variation in growth-form as shoots in natural populations at the transplant sites. This suggests that populations are also genetically differentiated with respect to growth-form. (Less)
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author
organization
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type
Contribution to journal
publication status
published
subject
in
Journal of Bryology
volume
23
pages
283 - 292
publisher
Maney Publishing
external identifiers
  • scopus:0035682012
ISSN
1743-2820
language
English
LU publication?
yes
id
cb3e0da0-f007-4941-baf1-5b52748f488c (old id 152988)
date added to LUP
2007-07-02 13:59:22
date last changed
2018-01-07 05:47:21
@article{cb3e0da0-f007-4941-baf1-5b52748f488c,
  abstract     = {The moss Hylocomium splendens has both sympodial and monopodial forms of growth. One aim of this study was to document the growth-form of shoots from different populations. A further aim was to discover the extent to which genetic or environmental factors determine whether monopodial or sympodial growth-form is predominant in a population. Switching between growth-forms within shoots occurs in most populations. Populations in forest habitats in temperate to mid-Arctic environments have predominantly sympodial shoots whereas shoots of populations from tundra habitats, in high-Arctic environments or at high altitudes, are predominantly monopodial. Transplant experiments showed that sympodial and monopodial shoots can respond plastically, by changing growth-form to some extent in different environments, and that high nutrient availability is an important environmental factor in promoting sympodial growth-form. However, even after 14 years, transplants did not show the same variation in growth-form as shoots in natural populations at the transplant sites. This suggests that populations are also genetically differentiated with respect to growth-form.},
  author       = {Ross, S E and Callaghan, T V and Sonesson, Mats and Sheffield, E},
  issn         = {1743-2820},
  language     = {eng},
  pages        = {283--292},
  publisher    = {Maney Publishing},
  series       = {Journal of Bryology},
  title        = {Variation and control of growth-form in the moss Hylocomium splendens},
  volume       = {23},
  year         = {2001},
}