| Age-related differences in physiological and metabolic responses of Pleione aurita (Orchidaceae) pseudobulbs to drought stress and recovery | |
Zhang, Wei ; Dong, Xiu-Mei; Zhang, Yu-Wen; Fan, Ze-Xin; Zhang, Shi-Bao
| |
| 2023 | |
| Source Publication | PLANT PHYSIOLOGY AND BIOCHEMISTRY
 |
| ISSN | 0981-9428 |
| Volume | 197Issue:xPages:- |
| Abstract | ABS T R A C T The pseudobulb is a storage organ for water and nutrients that plays a crucial role in the growth and survival of epiphytic orchids. However, the role of water and metabolites in pseudobulb during adaptation to environmental stress are rarely detected through control experiments. In the present study, water-related physiological traits and metabolite changes in the pseudobulbs at the flowering stage and full leaf expansion stage for Pleione aurita were investigated after drought stress and recovery treatments. We found that the composition of non-structural carbohydrates (starch vs. soluble sugar) varied over the lifetime of pseudobulbs, and older pseudobulbs stored more water, whereas younger pseudobulbs stored more dry matter. When plants were subjected to drought stress and subsequent recovery, multiple metabolites in the pseudobulbs including non-structural carbohydrates, fla-vonoids, phenolic acids, as well as amino acids and their derivatives responded positively to these water level fluctuations. For those metabolites that differently accumulated in both stress and recovery processes, old pseudobulbs contained a higher number of these key metabolites than did the connected younger pseudobulbs. In addition, young and old pseudobulbs use different metabolic pathways to both respond and recover to drought. These results indicate that orchid pseudobulbs cope with water level fluctuations by mobilizing metabolite re-serves and that pseudobulbs of different ages exhibit different physiological and metabolic responses to drought stress. These findings broadens our understanding of the role pseudobulbs play in the survival of orchids growing in epiphytic habitats. |
| Keyword | SECONDARY METABOLITES WATER-DEFICIT GROWTH ACCUMULATION FLAVONOIDS LEAVES ACID SIZE CARBOHYDRATE MOBILIZATION |
| Subject Area | Plant Sciences |
| DOI | 10.1016/j.plaphy.2023.107655 |
| Indexed By | SCI |
| Language | 英语 |
| WOS ID | WOS:000967954200001 |
| Citation statistics | |
| Document Type | 期刊论文 |
| Identifier | https://ir.xtbg.ac.cn/handle/353005/13461 |
| Collection | 2012年后新成立研究组 |
| Affiliation | 1.[Zhang, Wei 2.Dong, Xiu-Mei 3.Zhang, Yu-Wen 4.Chinese Acad Sci, Kunming Inst Bot, Key Lab Econ Plants & Biotechnol, Kunming 650201, Yunnan, Peoples R China 5.Yunnan Key Lab Wild Plant Resources, Kunming 650201, Yunnan, Peoples R China 6.Chinese Acad Sci, Key Lab Trop Forest Ecol, Xishuangbanna Trop Bot Garden, Mengla 666303, Yunnan, Peoples R China 7.Univ Chinese Acad Sci, Beijing 100049, Peoples R China |
| Recommended Citation GB/T 7714 | Zhang, Wei,Dong, Xiu-Mei,Zhang, Yu-Wen,et al. Age-related differences in physiological and metabolic responses of Pleione aurita (Orchidaceae) pseudobulbs to drought stress and recovery[J]. PLANT PHYSIOLOGY AND BIOCHEMISTRY,2023,197(x):-. |
| APA | Zhang, Wei,Dong, Xiu-Mei,Zhang, Yu-Wen,Fan, Ze-Xin,&Zhang, Shi-Bao.(2023).Age-related differences in physiological and metabolic responses of Pleione aurita (Orchidaceae) pseudobulbs to drought stress and recovery.PLANT PHYSIOLOGY AND BIOCHEMISTRY,197(x),-. |
| MLA | Zhang, Wei,et al."Age-related differences in physiological and metabolic responses of Pleione aurita (Orchidaceae) pseudobulbs to drought stress and recovery".PLANT PHYSIOLOGY AND BIOCHEMISTRY 197.x(2023):-. |
| Files in This Item: | Download All | |||||
| File Name/Size | DocType | Version | Access | License | ||
| Age-related differen（7783KB） | 期刊论文 | 出版稿 | 开放获取 | CC BY-NC-SA | View Download | |
Items in the repository are protected by copyright, with all rights reserved, unless otherwise indicated.
Edit Comment