Evidence map›Paper›PMID 25071222›Full record

ArticleJournal of experimental botany2014

Deficiencies in both starch synthase IIIa and branching enzyme IIb lead to a significant increase in amylose in SSIIa-inactive japonica rice seeds.

Hiroki Asai, Natsuko Abe, Ryo Matsushima, Naoko Crofts, Naoko F Oitome, Yasunori Nakamura, Naoko Fujita

Open access · greenAbstract read
In one paragraph

Article in Journal of experimental botany, 2014. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 44 papers.

0numbers the graph read from it
0cells of the map it votes in
44citing papers in PubMed
4.4field-weighted citation impact, top 5% of its field
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

44 citing papers in PubMed, 98 citations in OpenAlex.

  1. Article
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  11. A Pilot Study to Assess Glucose, Insulin, and Incretin Responses Following Novel High Resistant Starch Rice Ingestion in Healthy Men.Diabetes therapy : research, treatment and education of diabetes and related disorders · 2022
    Article
  12. Article
  13. Review
  14. Review
  15. Article
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  17. Article
  18. Article
  19. Starch Biosynthetic Protein Complex Formation in RiceJournal of applied glycoscience · 2022
    Article
  20. Interaction ofFrontiers in plant science · 2022
    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 at 2 institutions in 1 country.

Hiroki AsaiDepartment of Biological Production, Akita Prefectural University, Akita City, Akita, 010-0195, Japan.
Natsuko AbeDepartment of Biological Production, Akita Prefectural University, Akita City, Akita, 010-0195, Japan.
Ryo MatsushimaInstitute of Plant Science and Resources, Okayama University, Kurashiki, Okayama, 710-0046, Japan.
Naoko CroftsDepartment of Biological Production, Akita Prefectural University, Akita City, Akita, 010-0195, Japan.
Naoko F OitomeDepartment of Biological Production, Akita Prefectural University, Akita City, Akita, 010-0195, Japan.
Yasunori NakamuraDepartment of Biological Production, Akita Prefectural University, Akita City, Akita, 010-0195, Japan.
Naoko FujitaDepartment of Biological Production, Akita Prefectural University, Akita City, Akita, 010-0195, Japan naokof@akita-pu.ac.jp.
Akita Prefectural University · JPOkayama University · JP

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Starch synthase (SS) IIIa has the second highest activity of the total soluble SS activity in developing rice endosperm. Branching enzyme (BE) IIb is the major BE isozyme, and is strongly expressed in developing rice endosperm. A mutant (ss3a/be2b) was generated from wild-type japonica rice which lacks SSIIa activity. The seed weight of ss3a/be2b was 74-94% of that of the wild type, whereas the be2b seed weight was 59-73% of that of the wild type. There were significantly fewer amylopectin short chains [degree of polymerization (DP) ≤13] in ss3a/be2b compared with the wild type. In contrast, the amount of long chains (DP ≥25) connecting clusters of amylopectin in ss3a/be2b was higher than in the wild type and lower than in be2b. The apparent amylose content of ss3a/be2b was 45%, which was >1.5 times greater than that of either ss3a or be2b. Both SSIIIa and BEIIb deficiencies led to higher activity of ADP-glucose pyrophosphorylase (AGPase) and granule-bound starch synthase I (GBSSI), which partly explains the high amylose content in the ss3a/be2b endosperm. The percentage apparent amylose content of ss3a and ss3a/be2b at 10 days after flowering (DAF) was higher than that of the wild type and be2b. At 20 DAF, amylopectin biosynthesis in be2b and ss3a/be2b was not observed, whereas amylose biosynthesis in these lines was accelerated at 30 DAF. These data suggest that the high amylose content in the ss3a/be2b mutant results from higher amylose biosynthesis at two stages, up to 20 DAF and from 30 DAF to maturity.

Indexed as

1,4-alpha-Glucan Branching EnzymeAmyloseOryzaPlants, Genetically ModifiedSeedsStarch Synthase1,4-alpha-Glucan Branching EnzymeAmyloseStarch SynthaseAmylopectinamylosebranching enzymemutantricestarch synthase.

Identifiers

PMID25071222
PMCPMC4157723
OpenAlexW2165395285

What OpenQuestion holds

Textmetadata
LicenceCC BY
Read underepoch 390

Registered trials

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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.