Evidence map›Paper›PMID 15660206›Full record

ArticlePlanta2005

Gravitropic moss cells default to spiral growth on the clinostat and in microgravity during spaceflight.

Volker D Kern, Jochen M Schwuchow, David W Reed, Jeanette A Nadeau, Jessica Lucas, Alexander Skripnikov, Fred D Sack

Abstract read
PubMed Publisher
In one paragraph

Article in Planta, 2005. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 15 papers.

0numbers the graph read from it
0cells of the map it votes in
15citing papers in PubMed
–field-weighted citation impact
1 · What the graph read from it

What it found

Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.

The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.

2 · The registry

The trial behind it

Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.

Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.

3 · Its place in the literature

Who cites it

15 citing papers in PubMed.

  1. Article
  2. Review
  3. Article
  4. Conducting Plant Experiments in Space and on the Moon.Methods in molecular biology (Clifton, N.J.) · 2022
    Review
  5. Review
  6. The dynamics of plant nutation.Scientific reports · 2020
    Article
  7. Article
  8. A Celebration of Fred David Sack.Plant physiology · 2017
    Article
  9. Article
  10. Plasticity-mediated persistence in new and changing environments.International journal of evolutionary biology · 2014
    Review
  11. Regeneration of Little Ice Age bryophytes emerging from a polar glacier with implications of totipotency in extreme environments.Proceedings of the National Academy of Sciences of the United States of America · 2013
    Article
  12. Article
  13. Review
  14. Article
  15. Article
4 · The record

Corrections and comments

PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.

5 · Who and what money

Authors and funding

7 authors.

Volker D KernDepartment of Plant Cellular and Molecular Biology, Ohio State University, 318 W. 12th Ave., Columbus, OH 43210, USA.
Jochen M Schwuchow
David W Reed
Jeanette A Nadeau
Jessica Lucas
Alexander Skripnikov
Fred D Sack

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

In addition to shoots and roots, the gravity (g)-vector orients the growth of specialized cells such as the apical cell of dark-grown moss protonemata. Each apical cell of the moss Ceratodon purpureus senses the g-vector and adjusts polar growth accordingly producing entire cultures of upright protonemata (negative gravitropism). The effect of withdrawing a constant gravity stimulus on moss growth was studied on two NASA Space Shuttle (STS) missions as well as during clinostat rotation on earth. Cultures grown in microgravity (spaceflight) on the STS-87 mission exhibited two successive phases of non-random growth and patterning, a radial outgrowth followed by the formation of net clockwise spiral growth. Also, cultures pre-aligned by unilateral light developed clockwise hooks during the subsequent dark period. The second spaceflight experiment flew on STS-107 which disintegrated during its descent on 1 February 2003. However, most of the moss experimental hardware was recovered on the ground, and most cultures, which had been chemically fixed during spaceflight, were retrieved. Almost all intact STS-107 cultures displayed strong spiral growth. Non-random culture growth including clockwise spiral growth was also observed after clinostat rotation. Together these data demonstrate the existence of default non-random growth patterns that develop at a population level in microgravity, a response that must normally be overridden and masked by a constant g-vector on earth.

Indexed as

GravitropismSpace FlightWeightlessnessBryopsidaNASA Discipline Plant BiologyNASA Experiment Number 9600005NASA Experiment Number 9600011Non-NASA Center

Identifiers

What OpenQuestion holds

Textmetadata
Read underepoch 390

Registered trials

None linked

Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.