气候变化领域集成服务门户(CCPortal): Biostimulants do not affect the performance of urban plant species grown under drought stress

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DOI	10.1007/s11252-024-01521-5
	Biostimulants do not affect the performance of urban plant species grown under drought stress
	Cinantya, Ariningsun; Manea, Anthony; Leishman, Michelle R.
发表日期	2024
ISSN	1083-8155
EISSN	1573-1642
英文摘要	Urban areas often have low soil water availability due to their impervious surfaces reducing rainfall infiltration. These water-limited conditions may be exacerbated by the projected increases in drought events caused by climate change. As a result, plants that grow in urban areas are vulnerable to drought stress. There are a range of practices that can be used to help mitigate drought stress, including the use of biostimulants. This study aimed to determine whether biostimulant application (1) improves plant performance and (2) mitigates the drought stress on urban plant species. To address these aims, we selected six woody and three graminoid plant species that are commonly planted in Australian urban areas and exposed them to different watering (drought-stressed, well-watered) and biostimulant (control, humic acid, protein hydrolysate, seaweed extract) treatments. We then measured their assimilation rate, growth metrics and biomass allocation. We found that drought stress reduced the assimilation rates and shoot growth of the study species. However, this did not translate into a biomass reduction because the drought-stressed plants reallocated resources towards root biomass. We found no evidence to suggest biostimulant application mitigated the impacts of drought stress on plant performance. Further, the only effect biostimulant application had on plant performance irrespective of the watering treatment was that the seaweed biostimulant increased the plant height growth of the woody species. These results show that the biostimulants used in this study will have a limited effect on the performance of plant species commonly planted in Australian urban areas.
英文关键词	Humic substance; Low water availability; Protein hydrolysate; Seaweed extract; Urban greening
语种	英语
WOS研究方向	Biodiversity & Conservation ; Environmental Sciences & Ecology ; Urban Studies
WOS类目	Biodiversity Conservation ; Ecology ; Environmental Sciences ; Urban Studies
WOS记录号	WOS:001163268600001
来源期刊	URBAN ECOSYSTEMS
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/299688
作者单位	Macquarie University
推荐引用方式 GB/T 7714	Cinantya, Ariningsun,Manea, Anthony,Leishman, Michelle R.. Biostimulants do not affect the performance of urban plant species grown under drought stress[J],2024.
APA	Cinantya, Ariningsun,Manea, Anthony,&Leishman, Michelle R..(2024).Biostimulants do not affect the performance of urban plant species grown under drought stress.URBAN ECOSYSTEMS.
MLA	Cinantya, Ariningsun,et al."Biostimulants do not affect the performance of urban plant species grown under drought stress".URBAN ECOSYSTEMS (2024).