气候变化领域集成服务门户(CCPortal): Recurrent symmetrical bendings cause dwarfing in Hydrangea through spatial molecular regulation of xylem cell walls

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DOI	10.3389/fpls.2023.1268272
	Recurrent symmetrical bendings cause dwarfing in Hydrangea through spatial molecular regulation of xylem cell walls
	Ley-Ngardigal, Bera; Roman, Hanae; Brouard, Nathalie; Huche-Thelier, Lydie; Guerin, Vincent; Leduc, Nathalie
发表日期	2024
ISSN	1664-462X
起始页码	14
卷号	14
英文摘要	Environmental prejudices progressively lead to the ban of dwarfing molecules in agriculture, and alternatives are urgently required. Mechanical stimulation (MS) is a promising, eco-friendly, and economical technique, but some responses to mechanical stimulation vary from one plant species to another. Additionally, as more frequent and violent wind episodes are forecasted under global climate change, knowledge of plant responses to stimuli mimicking wind sways is decisive for agriculture. However, little is known about plant mechanosensitive responses after long-term, recurrent MS. Here, the effects of 3-week, recurrent, symmetrical bendings (1 or 12 per day) in Hydrangea macrophylla stems are examined. Bendings repressed internode elongation and leaf area development, whereas the diametrical growth of the basal internode is increased. Responses were dose-dependent, and no desensitization was observed during the 3 weeks of treatment. MS was almost as efficient as daminozide for plant dwarfing, and it improved stem robustness. Histological and molecular responses to MS were spatially monitored and were concordant with ongoing primary or secondary growth in the internodes. Our molecular data provide the first knowledge on the molecular paths controlled by mechanical loads in Hydrangea and revealed for the first time the involvement of XYP1 in thigmomorphogenetic responses. MS still had a transcriptional impact 48 h after the last bending session, promoting the expression of XYP1, FLA11, and CAD1 while repressing the expression of EXP3 and XTH33 homologs in accordance with xylogenesis, cell wall thickening, and lignin deposition in the xylem of basal internodes. In upper elongating internodes, repression of XYP1, CAD1, SAMS1, and CDC23 homologs is correlated with ongoing primary, even though stunted, growth. For producers, our findings highlight the potential of MS as a sustainable and economical option for controlling plant compactness in Hydrangea and show valuable reinforcement of stem strength.
英文关键词	biomimetics; mechanical stress; non-chemical dwarfing; ornamental; plant compactness; stem flexure; thigmomorphogenesis; wood anatomy
语种	英语
WOS研究方向	Plant Sciences
WOS类目	Plant Sciences
WOS记录号	WOS:001153891600001
来源期刊	FRONTIERS IN PLANT SCIENCE
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/303292
作者单位	INRAE; Institut Agro; Universite d'Angers
推荐引用方式 GB/T 7714	Ley-Ngardigal, Bera,Roman, Hanae,Brouard, Nathalie,et al. Recurrent symmetrical bendings cause dwarfing in Hydrangea through spatial molecular regulation of xylem cell walls[J],2024,14.
APA	Ley-Ngardigal, Bera,Roman, Hanae,Brouard, Nathalie,Huche-Thelier, Lydie,Guerin, Vincent,&Leduc, Nathalie.(2024).Recurrent symmetrical bendings cause dwarfing in Hydrangea through spatial molecular regulation of xylem cell walls.FRONTIERS IN PLANT SCIENCE,14.
MLA	Ley-Ngardigal, Bera,et al."Recurrent symmetrical bendings cause dwarfing in Hydrangea through spatial molecular regulation of xylem cell walls".FRONTIERS IN PLANT SCIENCE 14(2024).