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利用大气压介质阻挡放电等离子体处理缓解干旱胁迫对小麦种子萌发的不良影响。

Alleviation of adverse effects of drought stress on wheat seed germination using atmospheric dielectric barrier discharge plasma treatment.

机构信息

College of Natural Resources and Environment, Northwest A&F University, Yangling, Shaanxi Province, 712100, P.R. China.

Key Laboratory of Plant Nutrition and the Agri-environment in Northwest China, Ministry of Agriculture, Yangling, Shaanxi, 712100, P.R. China.

出版信息

Sci Rep. 2017 Nov 30;7(1):16680. doi: 10.1038/s41598-017-16944-8.

DOI:10.1038/s41598-017-16944-8
PMID:29192193
原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC5709406/
Abstract

Atmospheric dielectric barrier discharge (DBD) was attempted to improve the resistance of wheat seed to drought stress. Effects of DBD plasma on wheat seed germination, seedling growth, osmotic-adjustment products, lipid peroxidation, reactive oxygen species (ROS), antioxidant enzyme activity, abscisic acid, and drought resistant related genes expression under drought stress were investigated. The changes of the wheat seed coat before and after the DBD plasma treatment were explored. Experimental results showed that the DBD plasma treatment could alleviate the adverse effects of drought stress on wheat seed germination and seedling growth; the germination potential and germination rate increased by 27.2% and 27.6%, and the root length and shoot length of the wheat seedlings also increased. Proline and soluble sugar levels under drought stress were improved after the DBD plasma treatment, whereas the malondialdehyde content decreased. ROS contents under drought stress were reduced after the DBD plasma treatment, whereas the activities of superoxide dismutase, catalase, and peroxidase were promoted. DBD plasma treatment promoted abscisic acid generation in wheat seedlings, and it also regulated functional gene LEA1 and stimulated regulation genes SnRK2 and P5CS to resist drought stress. Etching effect and surface modification occurred on the seed coat after the DBD plasma treatment.

摘要

采用大气压介质阻挡放电（DBD）处理来提高小麦种子对干旱胁迫的抗性。研究了 DBD 等离子体对干旱胁迫下小麦种子萌发、幼苗生长、渗透调节产物、脂质过氧化、活性氧（ROS）、抗氧化酶活性、脱落酸以及与抗旱相关基因表达的影响。探讨了 DBD 等离子体处理前后小麦种皮的变化。实验结果表明，DBD 等离子体处理可以减轻干旱胁迫对小麦种子萌发和幼苗生长的不利影响；发芽势和发芽率分别提高了 27.2%和 27.6%，小麦幼苗的根长和苗长也有所增加。DBD 等离子体处理后，干旱胁迫下脯氨酸和可溶性糖含量提高，丙二醛含量降低。DBD 等离子体处理后，干旱胁迫下 ROS 含量降低，而过氧化物酶、过氧化氢酶和超氧化物歧化酶的活性提高。DBD 等离子体处理促进了小麦幼苗中脱落酸的生成，并调节功能基因 LEA1 以及刺激调节基因 SnRK2 和 P5CS 来抵抗干旱胁迫。DBD 等离子体处理后，种皮发生了刻蚀效应和表面改性。

https://cdn.ncbi.nlm.nih.gov/pmc/blobs/827e/5709406/626bcba5d19e/41598_2017_16944_Fig9_HTML.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/827e/5709406/2cc6167ae8af/41598_2017_16944_Fig1_HTML.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/827e/5709406/977035f979b1/41598_2017_16944_Fig2_HTML.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/827e/5709406/13020570ae99/41598_2017_16944_Fig3_HTML.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/827e/5709406/579a20dc921c/41598_2017_16944_Fig4_HTML.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/827e/5709406/af2c1cdd08fc/41598_2017_16944_Fig5_HTML.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/827e/5709406/8bbb010fee6a/41598_2017_16944_Fig6_HTML.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/827e/5709406/cbc4bafac92b/41598_2017_16944_Fig7_HTML.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/827e/5709406/b972feaa36e7/41598_2017_16944_Fig8_HTML.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/827e/5709406/626bcba5d19e/41598_2017_16944_Fig9_HTML.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/827e/5709406/2cc6167ae8af/41598_2017_16944_Fig1_HTML.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/827e/5709406/977035f979b1/41598_2017_16944_Fig2_HTML.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/827e/5709406/13020570ae99/41598_2017_16944_Fig3_HTML.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/827e/5709406/579a20dc921c/41598_2017_16944_Fig4_HTML.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/827e/5709406/af2c1cdd08fc/41598_2017_16944_Fig5_HTML.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/827e/5709406/8bbb010fee6a/41598_2017_16944_Fig6_HTML.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/827e/5709406/cbc4bafac92b/41598_2017_16944_Fig7_HTML.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/827e/5709406/b972feaa36e7/41598_2017_16944_Fig8_HTML.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/827e/5709406/626bcba5d19e/41598_2017_16944_Fig9_HTML.jpg

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