Evidence map›Paper›PMID 41004686›Full record

ArticleJournal of experimental botany2026

Transactivation of AGPL2 by Opaque2 is responsible for starch accumulation and kernel hardness in sweet corn.

Jianjian Chen, Bin Wang, Xiaolong Chen, Xianwen Zhang, Huabing Lu, Xuegao Lv, Guihua Lv, Ruiqiu Fang

Abstract read
PubMed Full text at PMC Publisher
In one paragraph

Article in Journal of experimental botany, 2026. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 1 paper.

0numbers the graph read from it
0cells of the map it votes in
1citing 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

1 citing paper in PubMed.

  1. 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

8 authors.

Jianjian ChenInstitute of Maize and Featured Upland Crops, Zhejiang Academy of Agricultural Sciences, Dongyang, Zhejiang 322100, China.
Bin WangInstitute of Vegetables, Zhejiang Academy of Agricultural Sciences, Hangzhou, Zhejiang 310021, China.
Xiaolong ChenInstitute of Maize and Featured Upland Crops, Zhejiang Academy of Agricultural Sciences, Dongyang, Zhejiang 322100, China.
Xianwen ZhangInstitute of Virology and Biotechnology, Zhejiang Academy of Agricultural Sciences, Hangzhou, Zhejiang 310021, China.
Huabing LuInstitute of Maize and Featured Upland Crops, Zhejiang Academy of Agricultural Sciences, Dongyang, Zhejiang 322100, China.
Xuegao LvInstitute of Maize and Featured Upland Crops, Zhejiang Academy of Agricultural Sciences, Dongyang, Zhejiang 322100, China.
Guihua LvInstitute of Maize and Featured Upland Crops, Zhejiang Academy of Agricultural Sciences, Dongyang, Zhejiang 322100, China.
Ruiqiu FangInstitute of Maize and Featured Upland Crops, Zhejiang Academy of Agricultural Sciences, Dongyang, Zhejiang 322100, China.ORCID 0000-0003-2026-6976

Funding

Science Technology Project of Zhejiang Province 2024C04003ZAAS Program of Transdisciplinary Research 2024ZDX02Zhejiang Major Scientific and Technological Project of Agricultural 2021C02064-6Zhejiang Provincial Natural Science Foundation LGN22C130014Zhejiang Provincial Natural Science Foundation LTGN23C150002
6 · The paper itself

Abstract

Kernel hardness is an important indicator of quality in sweet corn (Zea mays subsp. saccharata), but the mechanism underlying its regulation remains poorly understood. In this study, we determined that the starch and protein composition of the endosperm was positively correlated with kernel hardness. AGPL2, encoding a subunit of AGPase, was differentially expressed in the endosperm of different cultivars and was responsible for residual AGPase activity and starch biosynthesis. We found that Opaque2 (O2), a key regulatory transcriptional factor for endosperm development, directly binds to the promoter of AGPL2 and activates its expression, resulting in the accumulation of starch. Taken together, our results reveal a novel mechanism whereby the O2-AGPL2 module participates in regulation of kernel hardness in sweet corn.

Indexed as

EndospermGlucose-1-Phosphate AdenylyltransferaseStarchZea maysDNA-Binding ProteinsFruitGene Expression Regulation, PlantPlant ProteinsSpecies SpecificityStarch SynthaseTranscriptional ActivationTranscription FactorsDNA-Binding ProteinsGlucose-1-Phosphate Adenylyltransferaseopaque-2 protein, Zea maysPlant ProteinsStarchStarch SynthaseTranscription FactorsAGPL2kernel hardnessOpaque2starchZea mays subsp. saccharata

Identifiers

PMID41004686
PMCPMC12794222

What Socratic holds

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LicenceCC BY-NC
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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 Socratic graph.