文献类型：期刊文献

英文题名：Physiological characteristics during the formation of aromatic components in xylem of Aquilaria sinensis induced by exogenous substances

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

第一作者：庞圣江;Pang, Shengjiang

通信作者：Tian, ZW[1];Zhou, ZZ[2]

机构：[1]Chinese Acad Forestry, Expt Ctr Trop Forestry, Pingxiang, Peoples R China;[2]Chinese Acad Forestry, Res Inst Trop Forestry, Guangzhou, Peoples R China;[3]Nanjing Forestry Univ, Coll Forestry, Nanjing, Peoples R China;[4]Fujian Acad Forestry, Inst Flower, Fuzhou, Peoples R China

年份：2024

卷号：15

外文期刊名：FRONTIERS IN PLANT SCIENCE

收录：;Scopus(收录号：2-s2.0-85211115372);WOS:【SCI-EXPANDED(收录号:WOS:001368486900001)】；

基金：The author(s) declare that financial support was received for the research, authorship, and/or publication of this article. The work was supported by the basic scientific research project of the Chinese Academy of Forestry (CAFYBB2022MB004), and Guangxi Natural Science Foundation (2024GXNSFAA010402). 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.

语种：英文

外文关键词：agarwood; aromatic components; physiological characteristics; endogenous hormones; enzyme activity; agarwood-induction technique; induction treatment; Aquilaria sinensis

摘要：An inductive combination of plant growth regulators, inorganic salts, and fungi is essential for the formation of aromatic components in the xylem of Aquilaria sinensis. However, the dynamics of xylem physiology and the relationships between physiological properties and aromatic components after artificial induction remain unclear. In this study, the changes in physiological properties of A. sinensis xylem during induction were determined and analyzed under four induction treatments and a control group. The defense hormone contents of jasmonic acid, salicylic acid, aminocyclopropane-1-carboxylic acid, and abscisic acid obtained from the four induction treatments increased significantly. However, the concentrations of gibberellin and indoleacetic acid were decreased compared to the control group. An initially upward and then downward trend was observed in the main antioxidant enzyme activities. Additionally, malonaldehyde content decreased obviously, while proline content tended to increase and then decrease as induction continued. The total and soluble sugar content was evidently reduced after treatment, and the soluble sugar content recovered more rapidly with time. Thirty-three aromatic components were identified in all treatments, and the primary aromatic components were terpenes, aromatics and chromones, the relative contents of which varied among treatments. These results provide new insights for optimization and innovation of agarwood induction techniques by exploring the formation of aromatics in the xylem of A. sinensis and its physiological responses following induction with exogenous substances (ethephon, NaCl, CaCl2 and fungal mixed solution).