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首页> 外文期刊>Acta Horticulturae >The effects of hydrogen peroxide and nitric oxide on ion contents and lipid peroxidation levels of pepper callus tissues under salt stress
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The effects of hydrogen peroxide and nitric oxide on ion contents and lipid peroxidation levels of pepper callus tissues under salt stress

机译：过氧化氢和一氧化氮对盐胁迫下辣椒愈伤组织脂质过氧化水平的影响

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摘要

Some chemical compounds such as calcium, hydrogen peroxide (H202), abscisic acid, jasmonic acid, ethylene, salicylic acid, and nitric oxide (NO) have been suggested to be signal molecules or messengers that are required for stimulating specific responses against various biotic and abiotic stresses. In this research, the effects of hydrogen peroxide and nitric oxide on ion contents and lipid peroxidation levels of pepper callus tissues under salt stress were investigated. Hypocotyl explants from 4-week-old pepper seedlings were cultivated with 1:1 mg L1 2,4-D: Kinetin to form callus. Afterward, 100 цМ H2O2,100 uM SNP (NO donor) and their combinations with 150 mM NaCl were applied for 48 h. Changes in ion and MDA (lipid peroxidation) contents were examined in calluses. In salt treated callus, while Na+ contents of tissues were induced, Ca2+ and K+ levels were lowered. Na+ intake was less in H2O2+150 mM NaCl, SNP+150 mM NaCl, and H2O2+SNP+150 mM NaCl treatments when compared with only salt treatmentwhile there was no significant difference in K+ contents. The lowest Na+ content was found in SNP+150 mM NaCl when these 3 groups were compared with each other. The lipid peroxidation levels of pepper calli was increased under salt stress conditions. For the groups that had H2O2 and NO applied, one by one or in combination, it was seen that lipid peroxidation level decreased when compared to the groups that were treated only with salt. When H2O2+150 mM NaCl, SNP+150 mM NaCl, and H2O2+SNP+150 mM NaCl treatments were compared with each other, the lowest MDA content was found in H2O2+SNP+150 mM NaCl treatment. The derived data shows that hydrogen peroxide and nitric oxide is given together with salt have healing effects when applied even one by one or together.
机译：已经提出了一些化合物，如钙，过氧化氢（H202），脱脂酸，茉莉酸，乙烯，水杨酸和一氧化氮（NO）是刺激针对各种生物和各种生物的特定反应所需的信号分子或信使非生物胁迫。在该研究中，研究了过氧化氢和一氧化氮对盐胁迫下的辣椒愈伤组织的离子含量和脂质过氧化水平的影响。 4周龄辣椒幼苗的胚乳外植体用1：1mg L1 2,4-D培养：Kinetin形成愈伤组织。之后，100цH2O2,100MUM SNP（无供体）及其与150mM NaCl的组合施用48小时。在愈伤组织中检查离子和MDA（脂质过氧化）内容物的变化。在盐处理的呼叫中，诱导Na +组织的含量，降低Ca2 +和k +水平。与仅盐处理相比，H2O2 + 150mM NaCl，SNP + 150mM NaCl，SNP + 150mM NaCl和H 2 O 2 + SnP + 150mM NaCl处理中没有显着差异，K +含量没有显着差异。当这些3组彼此比较时，在SNP + 150mM NaCl中发现最低Na +含量。在盐胁迫条件下，辣椒Calli的脂质过氧化水平增加。对于具有H 2 O 2和NO逐个或组合施加的基团，可以看出，与仅与盐处理的基团相比，脂质过氧化水平降低。当H 2 O 2 + 150mM NaCl，SNP + 150mM NaCl和H 2 O 2 + SnP + 150mM NaCl处理相互比较时，在H 2 O 2 + SNP + 150mM NaCl处理中发现最低MDA含量。衍生的数据表明，当甚至一个接一个地或在一起时，将过氧化氢和一氧化氮一起给予盐具有愈合效果。

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