Nitric oxide in physiological potential and biochemical mechanisms of pea seeds under water deficit

IF 1.1 4区农林科学 Q3 AGRONOMY

Journal of Seed Science Pub Date : 2022-01-01 DOI:10.1590/2317-1545v44258744

Marcelo Coelho Sekita, D. Dias, D. T. Pinheiro, A. Silva, Antônio César Batista Matos, L. J. Silva

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引用次数: 2

Abstract

Abstract: Nitric oxide (NO) has been standing out as a seed germination process stimulator, mainly under stress conditions. This work aimed to evaluate the physiological and biochemical effects of NO on germination and vigor of pea seeds submitted to water deficit. Seeds of cv. Itapuã 600 were sown in moistened substrate with water (control), PEG 6000 solution (-0.15 MPa) and PEG 6000 solution with sodium nitroprusside (SNP) (-0.15 MPa + 50 μM), an NO donor. The germination, vigor (germination speed and seedling development), activity of antioxidant enzymes, reactive oxygen species, lipid peroxidation, and amylase activity were evaluated. Germination and vigor of pea seeds were reduced under water deficit, but the application of SNP was able to improve the physiological and biochemical performance of the seeds under this condition. Water deficit promotes an increase in oxidative stress, but the application of NO promotes greater activity of antioxidative apparatus enzymes and amylases, softening the damage caused by water deficit during seed germination and growth of pea seedlings.

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水分亏缺条件下豌豆种子一氧化氮生理电位及生化机制研究

摘要/ Abstract摘要:一氧化氮(NO)作为种子萌发过程的刺激物一直受到关注，主要是在胁迫条件下。本研究旨在探讨NO对亏水豌豆种子萌发和活力的生理生化影响。cv种子。Itapuã 600株分别播种于有水(对照)、PEG 6000溶液(-0.15 MPa)和PEG 6000含硝普钠(SNP)溶液(-0.15 MPa + 50 μM)和NO供体的湿润基质中。对种子萌发、活力(萌发速度和幼苗发育)、抗氧化酶活性、活性氧活性、脂质过氧化和淀粉酶活性进行了评价。水分亏缺降低了豌豆种子的发芽率和活力，但SNP的施用能提高该条件下豌豆种子的生理生化性能。水分亏缺促进了氧化应激的增加，但NO的施用促进了抗氧化酶和淀粉酶的活性，软化了豌豆种子萌发和幼苗生长过程中水分亏缺造成的损害。

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来源期刊

Journal of Seed Science Agricultural and Biological Sciences-Agronomy and Crop Science

CiteScore

2.00

自引率

30.00%

发文量

审稿时长

12 weeks

期刊介绍： From 2017 the Journal of Seed Science (JSS) will circulate online version only. Original scientific studies and communications, not yet published or submitted to another journal for publication and written in Portuguese or English, will be accepted for publication. For manuscripts submitted in English, the authors should provide an adequated version. The SCIENTIFIC COMMUNICATION is a category of scientific manuscript which describes a technique, an equipment, new species or observations and surveys of limited results. It has the same scientific rigor as the “Scientific Articles” and the same value as a publication. The classification of a manuscript as a SCIENTIFIC COMMUNICATION is based on its content and scientific merit but it can be a preliminary study, simple and not definitive on a certain subject, with publication justified by its uniqueness and contribution to the area. The Editorial Board of the JSS may invite leading authors of recognized reputation to compose specific Review Articles covering topics of their specialization that will convey to the scientific community the state-of-the-art knowledge related to the specific theme.

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