ArticlePlant physiology1997
Endo-[beta]-Mannanase Activity from Individual Tomato Endosperm Caps and Radicle Tips in Relation to Germination Rates.
Article in Plant physiology, 1997. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 20 papers.
What it found
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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.
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.
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Who cites it
20 citing papers in PubMed, 95 citations in OpenAlex.
- Seasonal Pattern of Endo-β-Mannanase Activity During Germination ofPlants (Basel, Switzerland) · 2025Article
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- Ecological, (epi)genetic and physiological aspects of bet-hedging in angiosperms.Plant reproduction · 2021Review
- Mobilization and Role of Starch, Protein, and Fat Reserves during Seed Germination of Six Wild Grassland Species.Frontiers in plant science · 2018Article
- Regulation of seed germination in the close Arabidopsis relative Lepidium sativum: a global tissue-specific transcript analysis.Plant physiology · 2011Article
- Developmental changes in the germinability, desiccation tolerance, hardseededness, and longevity of individual seeds of Trifolium ambiguum.Annals of botany · 2010Article
- Solute permeation across the apoplastic barrier in the perisperm-endosperm envelope in cucumber seeds.Planta · 2010Article
- Article
- Mechanism and control of Solanum lycocarpum seed germination.Annals of botany · 2007Article
- Hydrolysis of (1,4)-beta-D-mannans in barley (Hordeum vulgare L.) is mediated by the concerted action of (1,4)-beta-D-mannan endohydrolase and beta-D-mannosidase.The Biochemical journal · 2006Article
- Article
- Class I beta-1,3-glucanase and chitinase are expressed in the micropylar endosperm of tomato seeds prior to radicle emergence.Plant physiology · 2001Article
- Expression of an expansin is associated with endosperm weakening during tomato seed germination.Plant physiology · 2000Article
- A germination-specific endo-beta-mannanase gene is expressed in the micropylar endosperm cap of tomato seeds.Plant physiology · 2000Article
- Vacuolar H(+)-ATPase is expressed in response to gibberellin during tomato seed germination.Plant physiology · 1999Article
- Expression of a polygalacturonase associated with tomato seed germination.Plant physiology · 1999Article
- Seed Germination and Dormancy.The Plant cell · 1997Article
- Relationship of Endo-[beta]-D-Mannanase Activity and Cell Wall Hydrolysis in Tomato Endosperm to Germination Rates.Plant physiology · 1997Article
- A Single-Seed Assay for Endo-[beta]-Mannanase Activity from Tomato Endosperm and Radicle Tissues.Plant physiology · 1997Article
Corrections and comments
PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.
Authors and funding
2 authors at 1 institution in 1 country.
Funding
No grant is acknowledged in the PubMed record.
Abstract
Endo-[beta]-mannanase is hypothesized to be a rate-limiting enzyme in endosperm weakening, which is a prerequisite for radicle emergence from tomato (Lycopersicon esculentum Mill.) seeds. Using a sensitive, single-seed assay, we have measured mannanase activity diffusing from excised tomato endosperm caps following treatments that alter the rate or percentage of radicle emergence. Most striking was the 100- to more than 10,000-fold range of mannanase activity detected among individual seeds of highly inbred tomato lines, which would not be detected in pooled samples. In some cases a threshold-type relationship between mannanase activity and radicle emergence was observed. However, when radicle emergence was delayed or prevented by osmoticum or abscisic acid, the initial increase in mannanase activity was unaffected or even enhanced. Partially dormant seed lots displayed a bimodal distribution of activity, with low activity apparently associated with dormant seeds in the population. Gibberellin- and abscisic acid-deficient mutant seeds exhibited a wide range of mannanase activity, consistent with their variation in hormonal sensitivity. Although the presence of mannanase activity in the endosperm cap is consistently associated with radicle emergence, it is not the sole or limiting factor under all conditions.
Identifiers
What OpenQuestion holds
Registered trials
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.