Evidence map›Paper›PMID 12099354›Full record

ArticleAnnals of botany2002

Early development in fern gametophytes: interpreting the transition to prothallial architecture in terms of coordinated photosynthate production and osmotic ion uptake.

Richard H Racusen

Abstract read
In one paragraph

Article in Annals of botany, 2002. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 5 papers.

0numbers the graph read from it
0cells of the map it votes in
5citing 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

5 citing papers in PubMed.

  1. Article
  2. Article
  3. Article
  4. Article
  5. 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

1 author.

Richard H RacusenDepartment of Biology, University of Maryland, College Park 20742, USA. rr2@umail.umd.edu

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Gametophytes of Onoclea sensiblis L. were grown under various light and media-ion conditions to gain a better understanding of the source/sink relationships between photosynthetic and ion-absorbing cells. There was a clear interdependency between green cell and rhizoid functions, such that the growth and development of the rhizoids was completely dependent on the internal delivery of photosynthates from green cells, and conversion of the one-dimensional filament into the two-dimensional prothallus required monovalent cations that could only be provided by rhizoid uptake. The need for monovalent cations was related to osmotic demands of dividing and expanding cells; prothallial development was blocked by monovalent cation deficiency, and the system resorted to Na+ uptake to support cell expansion when K+ was absent. Surgical excisions of filament cells further demonstrated the high degree of coordinated growth between the light-absorbing and ion-absorbing regions. It was also learned that excised sub-apical cells of the protonemata, like the intensively studied apical cell, were capable of remodelling remnants of the filament into a normal prothallus.

Indexed as

CalciumCationsCell PolarityDarknessFernsIon TransportLightOsmosisPhotoperiodPhotosynthesisPlant StructuresPotassiumReproductionSodiumTime FactorsCalciumCationsPotassiumSodium

Identifiers

PMID12099354
PMCPMC4233796

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.