Promoting deep-sowing germinability of corn (<i>Z</i><i>ea mays</i>) by seed soaking with gibberellic acid

Binrong, Pan; Zhong, Tailin; Zhao, Guangyao

doi:10.1080/03650340.2016.1268256

Cited by 14 publications

(10 citation statements)

References 35 publications

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“…These two hormones promoted cell elongation by acidifying and relaxing the epidermal cell wall of maize coleoptile and mesocotyl. Similarly, Pan et al (2017) showed that exogenous GA 3 also promoted the elongation of the hypocotyl under deep sowing. In addition, “auxin elongation hypothesis” had been confirmed and extended, and it was reported that auxin binding protein 1 and IAA receptor were involved in auxin/light signal network of maize ( Borucka and Fellner, 2012 ).…”

Section: Discussionmentioning

confidence: 91%

Network Analysis of Different Exogenous Hormones on the Regulation of Deep Sowing Tolerance in Maize Seedlings

Chen

Bai

et al. 2021

Front. Plant Sci.

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The planting method of deep sowing can make the seeds make full use of water in deep soil, which is considered to be an effective way to respond to drought stress. However, deep sowing will affect the growth and development of maize (Zea mays L.) at seedling stage. To better understand the response of maize to deep sowing stress and the mechanism of exogenous hormones [Gibberellin (GA3), Brassinolide (BR), Strigolactone (SL)] alleviates the damaging effects of deep-sowing stress, the physiological and transcriptome expression profiles of seedlings of deep sowing sensitive inbred line Zi330 and the deep-tolerant inbred line Qi319 were compared under deep sowing stress and the conditions of exogenous hormones alleviates stress. The results showed that mesocotyl elongated significantly after both deep sowing stress and application of exogenous hormones, and its elongation was mainly through elongation and expansion of cell volume. Hormone assays revealed no significant changes in zeatin (ZT) content of the mesocotyl after deep sowing and exogenous hormone application. The endogenous GA3 and auxin (IAA) contents in the mesocotyl of the two inbred lines increased significantly after the addition of exogenous GA3, BR, and SL under deep sowing stress compared to deep sowing stress, while BR and SL decreased significantly. Transcriptome analysis showed that the deep seeding stress was alleviated by GA3, BR, and SLs, the differentially expressed genes (DEGs) mainly included cellulose synthase, expansin and glucanase, oxidase, lignin biosynthesis genes and so on. We also found that protein phosphatase 2C and GA receptor GID1 enhanced the ability of resist deep seeding stress in maize by participating in the abscisic acid (ABA) and the GA signaling pathway, respectively. In addition, we identified two gene modules that were significantly related to mesocotyl elongation, and identified some hub genes that were significantly related to mesocotyl elongation by WGCNA analysis. These genes were mainly involved in transcription regulation, hydrolase activity, protein binding and plasma membrane. Our results from this study may provide theoretical basis for determining the maize deep seeding tolerance and the mechanism by which exogenous hormones regulates deep seeding tolerance.

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Section: Discussionmentioning

confidence: 91%

Network Analysis of Different Exogenous Hormones on the Regulation of Deep Sowing Tolerance in Maize Seedlings

Chen

Bai

et al. 2021

Front. Plant Sci.

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“…The advantages of these treatments include increased emergence, enhanced ability to compete with weeds for resources, better development under stress conditions, improved resistance to pathogens, and increased yields 14 . Many studies have demonstrated the beneficial effects of seed pretreatment with GA 3 in different crops, including increased productivity of Triticum aestivum under drought and unstressed conditions 15 , increased water uptake by seeds of Beta vulgaris under saline conditions 16 , shorter emergence time of Glycine max seedlings 17 , and increased plant weight and yield of Helianthus annuus 18 .…”

Section: Introductionmentioning

confidence: 99%

Polymeric nanoparticles as an alternative for application of gibberellic acid in sustainable agriculture: a field study

Pereira

Oliveira

Fraceto

2019

Sci Rep

107

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Nanocarrier systems for the encapsulation of agrochemicals can contribute to sustainable agriculture, but few nanosystems have been developed for plant growth regulators (PGRs). The present study evaluated the effects of seed priming using alginate/chitosan ( nano ALG/CS) and chitosan/tripolyphosphate ( nano CS/TPP) containing GA 3 on the growth and productivity of Solanum lycopersicum cultivated under field conditions. The results demonstrated that nanocarrier systems could improve fruit production, with the productivity increasing almost 4-fold using nano ALG/CS-GA 3 . This pioneering study demonstrates the potential of nanocarrier systems with PGRs for applications in agriculture.

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“…Moreover, auxin‐binding protein (ABP1) was found to actively participate in promoting maize mesocotyl elongation under deep‐sowing (Zhao & Wang, ). Similarly, mesocotyl elongation was promoted by exogenous GA under deep‐sowing (Pan, Zhong, & Zhao, ). BR and GA inhibitors decreased mesocotyl elongation (Hu et al, ).…”

Section: Mesocotyl Growthmentioning

confidence: 99%

Maize mesocotyl: Role in response to stress and deep‐sowing tolerance

Niu

Hao

et al. 2020

Plant Breeding

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Maize (Zea mays L.) is one of the most important crops worldwide and is a model organism among cereal crops. Abiotic and biotic stresses are often present simultaneously and severely influence maize production, causing great yield losses worldwide. Therefore, the selection and cultivation of stress‐tolerant maize lines that adapt to various stresses is instrumental in addressing the problem of yield losses caused by stress. The maize mesocotyl is the crucial organ that pushes shoots out of deep water or soil after seed germination. It has a simple anatomy and exhibits rapid growth in the dark. In this article, we reviewed the studies on the elongation of the maize mesocotyl and the actions of phytohormones, especially under deep‐sowing conditions, and emphasized the role of the maize mesocotyl in response to environmental stress and deep‐sowing tolerance. We propose that the maize mesocotyl can serve as a selection organ for evaluating stress tolerance at the early seedling stage. We also identify future research fields that need further investigation in studies of the maize mesocotyl.

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Promoting deep-sowing germinability of corn (Zea mays) by seed soaking with gibberellic acid

Cited by 14 publications

References 35 publications

Network Analysis of Different Exogenous Hormones on the Regulation of Deep Sowing Tolerance in Maize Seedlings

Network Analysis of Different Exogenous Hormones on the Regulation of Deep Sowing Tolerance in Maize Seedlings

Polymeric nanoparticles as an alternative for application of gibberellic acid in sustainable agriculture: a field study

Maize mesocotyl: Role in response to stress and deep‐sowing tolerance

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