| 吴会会,邹英宁,吴强盛.干旱胁迫下AMF对枳生长和活性氧代谢的影响[J].中国南方果树,2018,47(2): |
| 干旱胁迫下AMF对枳生长和活性氧代谢的影响 |
| Effects of Arbuscular Mycorrhizal Fungi on Growth and Reactive Oxygen Metabolism of Trifoliate Orange under Drought Stress |
| 投稿时间：2018-01-08 修订日期：2018-01-17 |
| DOI： |
| 中文关键词: 菌根,枳,活性氧,干旱 |
| 英文关键词:mycorrhizas, trifoliate orange, reactive oxygen species, drought |
| 基金项目:湖北省教育厅科学技术研究重点项目(D20171304)；湖北省高等学校优秀中青年科技创新团队计划项目(T201604) |
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| 摘要点击次数: 1990 |
| 全文下载次数: 2280 |
| 中文摘要: |
| 在正常水分和干旱胁迫下,研究丛枝菌根真菌(AMF)Funneliformis mosseae对枳生长和活性氧代谢的影响。结果表明：6 周的干旱处理显著抑制了枳根系菌根侵染率和植株生长。接种AMF能显著增加正常水分和干旱胁迫下枳株高、茎粗、叶片数,也显著降低叶片丙二醛、过氧化氢和超氧阴离子自由基含量,并显著增强叶片超氧化物歧化酶(主要是Mn-SOD和Cu/Zn-SOD)、过氧化物酶和过氧化氢酶的活性。研究揭示了菌根化植株具有更高的抗氧化防御能力,导致较低的氧化伤害,从而增强植物的抗旱性。 |
| 英文摘要: |
| The effects of an arbuscular mycorrhizal fungus (AMF, Funneliformis mosseae) on growth and reactive oxygen metabolism of trifoliate orange were investigated under well watered and drought stress. The results revealed that the 6-week drought stress treatment notably inhibited root mycorrhizal colonization and plant growth performance. AMF seedlings showed significantly higher plant height, stem diameter, and leaf number, regardless of soil water status. AMF inoculation significantly decreased leaf malondialdehyde, superoxide anion radical and hydrogen peroxide contents, whereas significantly increased the activities of leaf superoxide dismutase (mainly Mn-SOD and Cu/Zn-SOD, but not Fe-SOD), guaiacol peroxidase and catalase. Our results therefore suggest that mycorrhizal plants under drought stress represent greater antioxidant protected capacity to modulate lower oxidative damage, thus, enhancing drought tolerance of the host plant. |
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