不同诱导时间下中华水杉木质部生理特性和内生真菌群落的动态变化

IF 4.2 2区 生物学 Q2 MICROBIOLOGY Journal of Fungi Pub Date : 2024-08-09 DOI:10.3390/jof10080562
Qingqing Zhang, Rongrong Li, Yang Lin, Weiwei Zhao, Qiang Lin, Ouyang Lei, Shengjiang Pang, Huahao Zeng
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引用次数: 0

摘要

木质部相关真菌可分泌多种次生代谢产物,帮助水曲柳抵抗各种胁迫,并在促进琼脂木形成方面发挥重要作用。然而,人工诱导后木质部内生真菌的动态尚未得到充分阐述。在使用无机盐溶液诱导前后,包括诱导前(0M)、诱导处理后的第三个月(3M)、第六个月(6M)和第九个月(9M)四个不同时期,研究了内生真菌群落和木质部的物理生化特性。评估了真菌多样性与生理生化指标之间的关系。结果表明,随着诱导时间的延长,超氧化物歧化酶(SOD)和过氧化物酶(POD)活性、丙二醛(MDA)和可溶性糖含量先升高后降低,而淀粉在诱导处理后被大量消耗。诱导处理后内生真菌多样性明显低于诱导处理前,但物种丰富度有所提高。真菌的β-多样性也根据不同时间分为四组。随着诱导时间的推移,核心物种从稀有类群转变为优势类群,网络中物种间的相互作用不断增加,表明真菌群落结构逐渐复杂化。内生真菌的多样性和潜在功能与理化指标密切相关,而理化指标对优势物种的相对丰度影响较小。这些发现有助于评估人工诱导后加快琼脂木形成的微生物调控机制。
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Dynamics of Physiological Properties and Endophytic Fungal Communities in the Xylem of Aquilaria sinensis (Lour.) with Different Induction Times
Xylem-associated fungus can secrete many secondary metabolites to help Aquilaria trees resist various stresses and play a crucial role in facilitating agarwood formation. However, the dynamics of endophytic fungi in Aquilaria sinensis xylem after artificial induction have not been fully elaborated. Endophytic fungi communities and xylem physio-biochemical properties were examined before and after induction with an inorganic salt solution, including four different times (pre-induction (0M), the third (3M), sixth (6M) and ninth (9M) month after induction treatment). The relationships between fungal diversity and physio-biochemical indices were evaluated. The results showed that superoxide dismutase (SOD) and peroxidase (POD) activities, malondialdehyde (MDA) and soluble sugar content first increased and then decreased with induction time, while starch was heavily consumed after induction treatment. Endophytic fungal diversity was significantly lower after induction treatment than before, but the species richness was promoted. Fungal β-diversity was also clustered into four groups according to different times. Core species shifted from rare to dominant taxa with induction time, and growing species interactions in the network indicate a gradual complication of fungal community structure. Endophytic fungi diversity and potential functions were closely related to physicochemical indices that had less effect on the relative abundance of the dominant species. These findings help assess the regulatory mechanisms of microorganisms that expedite agarwood formation after artificial induction.
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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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