Evidence map›Paper›PMID 36660817›Full record

ArticlePlant physiology2023

Melatonin-priming enhances maize seedling drought tolerance by regulating the antioxidant defense system.

Ihsan Muhammad, Li Yang, Shakeel Ahmad, Saqib Farooq, Ahmad Khan, Nisar Muhammad, Saif Ullah, Muhammad Adnan, Shamsher Ali, Qing Ping Liang and 1 more

Open access · greenAbstract read
In one paragraph

Article in Plant physiology, 2023. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 47 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
47citing papers in PubMed, 1 pooled it
33.0field-weighted citation impact, top 1% 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

47 citing papers in PubMed, 1 synthesis or guideline pooled it, 83 citations in OpenAlex.

  1. Pooled it
  2. Biochemical Adaptations ofPlant-environment interactions (Hoboken, N.J.) · 2026
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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

11 authors at 2 institutions in 2 countries.

Ihsan MuhammadGuangxi Key Laboratory for Agro-Environment and Agro-Product Safety, Key Laboratory of Crop Cultivation and Physiology, Agricultural College, Guangxi University, Nanning 530004, China.ORCID 0000-0002-3436-6815
Li YangGuangxi Key Laboratory for Agro-Environment and Agro-Product Safety, Key Laboratory of Crop Cultivation and Physiology, Agricultural College, Guangxi University, Nanning 530004, China.
Shakeel AhmadGuangxi Key Laboratory for Agro-Environment and Agro-Product Safety, Key Laboratory of Crop Cultivation and Physiology, Agricultural College, Guangxi University, Nanning 530004, China.ORCID 0000-0001-8232-3396
Saqib FarooqGuangxi Key Laboratory for Agro-Environment and Agro-Product Safety, Key Laboratory of Crop Cultivation and Physiology, Agricultural College, Guangxi University, Nanning 530004, China.ORCID 0000-0002-3722-1224
Ahmad KhanFaculty of Crop Production Sciences, The University of Agriculture, Peshawar 25130, Pakistan.ORCID 0000-0002-9145-7414
Nisar MuhammadFaculty of Crop Production Sciences, The University of Agriculture, Peshawar 25130, Pakistan.
Saif UllahGuangxi Key Laboratory for Agro-Environment and Agro-Product Safety, Key Laboratory of Crop Cultivation and Physiology, Agricultural College, Guangxi University, Nanning 530004, China.ORCID 0000-0002-7237-4138
Muhammad AdnanGuangxi Key Laboratory for Agro-Environment and Agro-Product Safety, Key Laboratory of Crop Cultivation and Physiology, Agricultural College, Guangxi University, Nanning 530004, China.
Shamsher AliFaculty of Crop Production Sciences, The University of Agriculture, Peshawar 25130, Pakistan.
Qing Ping LiangAgricultural Engineering College, Guangxi Vocational University of Agriculture, Nanning 530007, China.ORCID 0000-0002-3139-3762
Xun Bo ZhouGuangxi Key Laboratory for Agro-Environment and Agro-Product Safety, Key Laboratory of Crop Cultivation and Physiology, Agricultural College, Guangxi University, Nanning 530004, China.ORCID 0000-0002-3191-7191
Guangxi University · CNThe University of Agriculture, Peshawar · PK

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Drought stress (DS) challenges sustainable agriculture production by limiting crop growth and development. The objective of the study was to evaluate the effect of melatonin-priming on enzymatic and non-enzymatic antioxidant defense mechanisms and its relation with leaf ultrastructure and stomatal traits in maize (Zea mays L) seedlings under DS (PEG-6000). DS drastically decreased seed germination, plant growth, and leaf chlorophyll content due to excessive reactive oxygen species (ROS) production. Melatonin-priming significantly (P < 0.05) increased seed germination, root length, shoot length, fresh seedling weight, proline content, total soluble protein content, sugar content, chlorophyll content, and stomatal aperture size by 101%, 30%, 133%, 51%, 22%, 59%, 54%, 20%, and 424%, compared to no priming (NP) under DS, respectively. Similarly, priming improved leaf ultrastructure and reduced the amount of chlorophyll loss and oxidative damage in maize seedlings. Melatonin seed priming with 500 µM melatonin (M2) greatly increased superoxide dismutase (SOD), peroxidase (POD), catalase (CAT), glutathione, and ascorbate (AsA) activity, by 65%, 63%, 94%, 41%, and 55% compared to NP under DS and by 0.26%, 8%, 33%, 42%, and 15% under no-stress (NS), respectively. Melatonin-priming also reduced malondialdehyde content, electrolyte leakage, hydrogen peroxide (H2O2) content, and superoxide anion (O2-) content by 26%, 31%, 31%, and 33% compared to NP under DS and by 8%, 18%, 10%, and 11% under NS, respectively. In response to DS, melatonin-priming also stabilized the chloroplast structure, sustained cell expansion, protected cell walls, and greatly improved stomatal traits, including stomatal number, length, and width. Our results suggest that melatonin-priming improves drought tolerance in maize seedlings by alleviating the negative effect of ROS.

Indexed as

AntioxidantsMelatoninChlorophyllDrought ResistanceHydrogen PeroxideReactive Oxygen SpeciesSeedlingsZea maysAntioxidantsChlorophyllHydrogen PeroxideMelatoninReactive Oxygen Species

Identifiers

PMID36660817
PMCPMC10069899
OpenAlexW4317567341

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.