两种丛枝菌根真菌在盐碱胁迫下保护枸杞的不同策略

IF 4.2 2区 生物学 Q2 MICROBIOLOGY Journal of Fungi Pub Date : 2024-08-06 DOI:10.3390/jof10080554
Xu Zheng, Ao Li, Ruining Nie, Chengxu Wu, Xinying Ji, Jiali Tang, Junpei Zhang
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引用次数: 0

摘要

在盐碱梯度环境(0、200、400 mM NaCl: NaHCO3 = 1:1)中进行了一系列盆栽实验。以接种了两种 AMF--Funneliformis mosseae(Fm)和Rhizophagus intraradices(Ri)--的黑枸杞一年生插条为实验材料,对幼苗的生物量、叶绿素含量、抗氧化酶活性和其他重要生理参数进行了全面分析。该研究表明,Fm 和 Ri 都能与枸杞根形成共生关系。值得注意的是,接种 Fm 能明显促进地下部分的生长,同时还能显著清除活性氧(ROS),从而有效减轻胁迫引起的膜氧化损伤。此外,Fm 还能促进脱落酸(ABA)在叶片和根部的积累,促进细胞排除多余的钠离子。Ri 接种主要有助于提高叶绿素 b(Chlb)的含量,而叶绿素 b 对维持光合作用过程至关重要。此外,Ri 还能在胁迫条件下促进磷(P)的吸收,确保必要养分的稳定流入。这些发现表明,Fm 和 Ri 采用了不同的接种策略。为了全面评估各处理组的耐盐碱能力,采用了成员函数分析法,最终将耐盐碱能力排序为 Fm > Ri > 非菌根(NM)对照。这一发现对筛选高抗逆性的枸杞菌株至关重要,并为盐碱土壤的修复提供了宝贵的理论基础和技术指导,有助于在具有挑战性的环境中开展可持续农业实践。
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Differential Strategies of Two Arbuscular Mycorrhizal Fungi Varieties in the Protection of Lycium ruthenicum under Saline–Alkaline Stress
To delve into the growth and physiological adaptations exhibited by the economically vital black wolfberry (Lycium ruthenicum) upon inoculation with arbuscular mycorrhizal fungi (AMF) under varying levels of saline–alkaline stress A series of pot experiments were conducted in a gradient saline–alkaline environment (0, 200, 400 mM NaCl: NaHCO3 = 1:1). One-year-old cuttings of black wolfberry, inoculated with two AMF species—Funneliformis mosseae (Fm) and Rhizophagus intraradices (Ri)—served as the experimental material, enabling a comprehensive analysis of seedling biomass, chlorophyll content, antioxidant enzyme activities, and other crucial physiological parameters. This study demonstrated that both Fm and Ri could form a symbiotic relationship with the root of Lycium ruthenicum. Notably, Fm inoculation significantly bolstered the growth of the underground parts, while exhibiting a remarkable capacity to scavenge reactive oxygen species (ROS), thereby effectively mitigating membrane oxidative damage induced by stress. Additionally, Fm promoted the accumulation of abscisic acid (ABA) in both leaves and roots, facilitating the exclusion of excess sodium ions from cells. Ri Inoculation primarily contributed to an enhancement in the chlorophyll b (Chlb) content, vital for sustaining photosynthesis processes. Furthermore, Ri’s ability to enhance phosphorus (P) absorption under stressful conditions ensured a steady influx of essential nutrients. These findings point to different strategies employed for Fm and Ri inoculation. To holistically assess the saline–alkaline tolerance of each treatment group, a membership function analysis was employed, ultimately ranking the salt tolerance as Fm > Ri > non-mycorrhizal (NM) control. This finding holds paramount importance for the screening of highly resilient Lycium ruthenicum strains and offers invaluable theoretical underpinnings and technical guidance for the remediation of saline–alkaline soils, fostering sustainable agricultural practices in challenging environments.
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来源期刊
Journal of Fungi
Journal of Fungi Medicine-Microbiology (medical)
CiteScore
6.70
自引率
14.90%
发文量
1151
审稿时长
11 weeks
期刊介绍: Journal of Fungi (ISSN 2309-608X) is an international, peer-reviewed scientific open access journal that provides an advanced forum for studies related to pathogenic fungi, fungal biology, and all other aspects of fungal research. The journal publishes reviews, regular research papers, and communications in quarterly issues. Our aim is to encourage scientists to publish their experimental and theoretical results in as much detail as possible. Therefore, there is no restriction on paper length. Full experimental details must be provided so that the results can be reproduced.
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