Regeneration and Endogenous Phytohormone Responses to High-Temperature Stress Drive Recruitment Success in Hemiepiphytic Fig Species
文献类型：期刊论文
| 作者 | Fang, Chuangwei; Chen, Huayang4; Castillo-Diaz, Diana; Wen, Bin2 ; Cao, Kun-Fang; Goodale, Uromi Manage3,5
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| 刊名 | FRONTIERS IN PLANT SCIENCE
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| 出版日期 | 2021 |
| 卷号 | 12期号:x页码:- |
| 关键词 | heat stress Ficus plant hormones seed and seedling climate change |
| ISSN号 | 1664-462X |
| DOI | 10.3389/fpls.2021.754207 |
| 英文摘要 | Exposure to high-temperature stress (HTS) during early regeneration in plants can profoundly shape seed germination, seedling growth, and development, thereby providing stress resilience. In this study, we assessed how the timing of HTS, which was implemented as 8 h in 40 degrees C, could affect the early regeneration stages and phytohormone concentration of four hemiepiphytic (Hs) and four non-hemiepiphytic (NHs) Ficus species. Their seed germination, seedling emergence, and seedling survival probabilities and the concentrations of three endogenous phytohormones, abscisic acid (ABA), indole-3-acetic acid (IAA), and salicylic acid (SA) were assessed after HTS imposed during imbibition, germination, and emergence. In both groups, seeds were more sensitive to HTS in the early regeneration process; stress experienced during imbibition affected emergence and survival, and stress experienced during germination affected subsequent emergence. There was no effect from HTS when received after emergence. Survival was highest in hemiepiphytes regardless of the HTS treatment. The phytohormones showed growth form- and regeneration stage-specific responses to HTS. Due to the HTS treatment, both SA and ABA levels decreased in non-hemiepiphytes during imbibition and germination; during germination, IAA increased in hemiepiphytes but was reduced in non-hemiepiphytes. Due to the HTS treatment experienced during emergence ABA and IAA concentrations were greater for hemiepiphytes but an opposite effect was seen in the two growth forms for the SA concentration. Our study showed that the two growth forms have different strategies for regulating their growth and development in the early regeneration stages in order to respond to HTS. The ability to respond to HTS is an ecologically important functional trait that allows plant species to appropriately time their seed germination and seedling development. Flexibility in modulating species regeneration in response to HTS in these subtropical and tropical Ficus species could provide greater community resilience under climate change. |
| 学科主题 | Plant Sciences |
| 语种 | 英语 |
| WOS记录号 | WOS:000733647000001 |
| 源URL | [http://ir.xtbg.org.cn/handle/353005/12465]  |
| 专题 | 西双版纳热带植物园_2012年后新成立研究组 |
| 作者单位 | 1.Ctr Integrat Conservat, Chinese Acad Sci, Xishuangbanna Trop Bot Garden, Beijing, Peoples R China 2.Seed Conservat Specialist Grp, Species Survival Commiss, Int Union Conservat Nat, Gland, Switzerland 3.Inst Bot, Chinese Acad Sci, State Key Lab Vegetat & Environm Change, Beijing, Peoples R China 4.Guangxi Univ, Coll Forestry, State Key Lab Conservat & Utilizat Subtrop Agro B, Nanning, Peoples R China 5.Guangxi Univ, Coll Forestry, Guangxi Key Lab Forestry Ecol & Conservat, Nanning, Peoples R China |
| 推荐引用方式 GB/T 7714 | Fang, Chuangwei,Chen, Huayang,Castillo-Diaz, Diana,et al. Regeneration and Endogenous Phytohormone Responses to High-Temperature Stress Drive Recruitment Success in Hemiepiphytic Fig Species[J]. FRONTIERS IN PLANT SCIENCE,2021,12(x):-. |
| APA | Fang, Chuangwei,Chen, Huayang,Castillo-Diaz, Diana,Wen, Bin,Cao, Kun-Fang,&Goodale, Uromi Manage.(2021).Regeneration and Endogenous Phytohormone Responses to High-Temperature Stress Drive Recruitment Success in Hemiepiphytic Fig Species.FRONTIERS IN PLANT SCIENCE,12(x),-. |
| MLA | Fang, Chuangwei,et al."Regeneration and Endogenous Phytohormone Responses to High-Temperature Stress Drive Recruitment Success in Hemiepiphytic Fig Species".FRONTIERS IN PLANT SCIENCE 12.x(2021):-. |
入库方式： OAI收割
来源：西双版纳热带植物园
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