Effects of exogenous proline on rice seedling germination and physiological and biochemical characteristics under stress from different Cr(VI) concentrations.

Qing Zhang, Lijuan Tang, Xiaoyu Wang, Yujuan Lin, Yuxi Feng, Junru Huang

Abstract read

In one paragraph

Article in Scientific reports, 2025. 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

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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.

Molecular mechanisms of peanut root responses to Cd stress regulated by ABC transporter and plant hormone signal transduction pathways.BMC plant biology · 2026
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

6 authors.

Qing ZhangSchool of Environmental Science and Engineering, Guilin University of Technology, Guilin, 541006, China. zhangqing@glut.edu.cn.ORCID http://orcid.org/0000-0003-1473-0592

Lijuan TangSchool of Environmental Science and Engineering, Guilin University of Technology, Guilin, 541006, China.

Xiaoyu WangSchool of Environmental Science and Engineering, Guilin University of Technology, Guilin, 541006, China.

Yujuan LinSchool of Environmental Science and Engineering, Guilin University of Technology, Guilin, 541006, China.

Yuxi FengSchool of Environmental Science and Engineering, Guilin University of Technology, Guilin, 541006, China.

Junru HuangSchool of Environmental Science and Engineering, Guilin University of Technology, Guilin, 541006, China.

Funding

Guangxi Key Research and Development Program Guike AB21220006the Natural Science Foundation of Guangxi 2025GXNSFAA069755

6 · The paper itself

Abstract

Heavy metal stress severely compromises crop productivity, with Cr(VI) being particularly detrimental to seed germination and early seedling development. This study demonstrates that exogenous proline (Pro) application significantly alleviates Cr(VI) toxicity in rice through multifaceted mechanisms. Under Cr(VI) stress (2.0-16.0 mg/L), Pro pretreatment increasing germination potential (GP) by 6.0-28.0% and germination rate (Gr) by 0.8-18.2%, while reducing mean germination time (MGT) by 6.9-14.5%; Pro elevating SOD (up to 287%), CAT (4.6-fold), and GR (1.22-fold) activities, alongside increasing GSH (1.1-fold) and AsA (1.3-fold) levels; Pro reducing MDA content by 85.0-88.2% and enhancing photosynthetic pigments (chlorophyll: 1.2-fold; carotenoids: 1.5-fold); Pro decreasing Cr accumulation in plumules by 17.5-78.5% while increasing grain sequestration. Random forest analysis revealed that Pro-mediated improvements were primarily driven by enhanced chlorophyll content (from 8.5% to 14.6%), CAT (from 13.6% to 16.7%), and SOD (from 5.1% to 8.3%) activities. These results establish Pro as an effective priming agent for improving rice establishment in Cr(VI)-contaminated environments through synergistic regulation of antioxidant systems, metal redistribution, and photosynthetic efficiency. These findings support the potential of Pro as a cost-effective strategy for improving rice establishment in Cr(VI)-contaminated soils.

Indexed as

ChromiumGerminationOryzaProlineSeedlingsStress, PhysiologicalAntioxidantsChlorophyllPhotosynthesisSuperoxide DismutaseAntioxidantsChlorophyllChromiumchromium hexavalent ionProlineSuperoxide DismutaseHexavalent chromiumProlineRiceSeed germinationStress resistance

Identifiers

PMID41253873

DOI10.1038/s41598-025-24201-6

PMCPMC12627736

What OpenQuestion holds

Textmetadata

LicenceCC BY-NC-ND

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.