文献类型：期刊文献

英文题名：The xylem anatomical structure, physiological characteristics and aromatic components analyses explain the difference of fungal solution induced agarwood formation in Aquilaria sinensis

作者：Pang, Shengjiang[1,2] Zhao, Weiwei[3] Huang, Guihua[1] Jiang, Qingbin[1] Zhou, Zaizhi[1] Zhang, Qingqing[4] Tian, Zuwei[2] Zhang, Pei[2] Li, Zhongguo[2] Deng, Shuokun[2] Liu, Shiling[2] Yang, Baoguo[2]

第一作者：庞圣江

通信作者：Zhou, ZZ[1];Tian, ZW[2]

机构：[1]Chinese Acad Forestry, Res Inst Trop Forestry, Guangzhou 510520, Peoples R China;[2]Chinese Acad Forestry, Expt Ctr Trop Forestry, Pingxiang 532600, Peoples R China;[3]Cent South Univ Forestry & Technol, Coll Forestry, Changsha 410018, Peoples R China;[4]Fujian Acad Forestry, Fuzhou 350011, Peoples R China

年份：2025

卷号：39

期号：6

外文期刊名：TREES-STRUCTURE AND FUNCTION

收录：;EI(收录号：20255019682616);Scopus(收录号：2-s2.0-105024067512);WOS:【SCI-EXPANDED(收录号:WOS:001633600400001)】；

基金：The work was supported by Guangxi Natural Science Foundation (2024GXNSFAA010402), and the basic scientific research project of the Chinese Academy of Forestry (CAFYBB2022MB004). The funder had no role in the design of study; in the collection, analyses, or interpretation of data; in the writing of the manuscript; or in the decision to publish the results. Natural Science Foundation of Guangxi Zhuang Autonomous Region,2024GXNSFAA010402,Shengjiang Pang

语种：英文

外文关键词：Agarwood; Anatomical structure; Physiological characteristics; Fungi; Aquilaria sinensis

摘要：Fungi are considered to be an important cause of agarwood formation. However, most of the fungal species used to artificially induce agarwood formation are fungi that are pathogenic on trees. Their improper selection can cause the tree to rot, which seriously affects the yield of agarwood and causes significant economic losses. Research on the production of agarwood induce by fungi antiseptically is highly significant for the innovation and optimization of the techniques to induced agarwood, as well as for the enhancement of its yield and quality. In this study, the existing difference between the anatomical structure of xylem tissues, physiological characteristics, and major aromatic components in agarwood formation was compared using an induction treatment of the Aquilaria sinensis (Lour.) Spreng test with Melanotus flavolivens (M-1, decay fungus), Muscodor sp. (M-2, nonpathogenic fungus) and a mixed solution of both (M-3). After the induction, the M-3 treatment showed the largest area of xylem tissue discoloration and the highest contents of oleaginous substances in month 12. The treatments of M-1, M-2, and M-3 tended to increase and then decrease the activities of superoxide dismutase(SOD), peroxidase (POD) (except for M-1), and catalase(CAT) and the content of malondialdehyde(MDA), as well as the significant enhancement of the activities of terpene synthases(TPS) and polyketide synthases(PKS). M-1, M-2, and M-3 agarwood yield and alcohol-soluble extract reached their maximum values at 27.12%, 22.35%, and 30.08% for the former and 13.46%, 9.02%, and 16.82% for the latter, respectively. The results of gas chromatography-mass spectrometry showed that 58 major aromatic components were identified in the agarwood samples. The total relative contents of aromatic components, M-3 (90.88%) > M-1 (83.39%) > M-2 (76.21%) > CK (33.51%). The terpenes primarily included ( +)-alpha-longipinene, alpha-muurolene, and santalol among others. The most common chromones were 2-(2-phenylethyl)chromone, and the aromatics were benzaldehyde and benzylacetone. The alkanes were hexadecane and 5-(2,3-dimethyltricyclo[2.2.1.02, 6]heptan-3-yl) and pentan-2-one among others. A Mantel's r analysis indicated a significant positive correlation between the terpenes, chromones, aromatics, and alkanes with both the content of alcohol-soluble extracts and the POD activity (P < 0.05), and no significant correlation existed between them and the other physiological indicators (P > 0.05).Briefly, the M-3 induction treatment resulted in a relatively strong response and longer duration of A. sinensis to stress injury, which was the primary reason for the higher production and better quality of agarwood.