干旱区生态环境知识资源中心(Arid): Direct foliar uptake of phosphorus from desert dust

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DOI	10.1111/nph.17344
	Direct foliar uptake of phosphorus from desert dust
	Gross, Avner; Tiwari, Sudeep; Shtein, Ilana; Erel, Ran
通讯作者	Gross, A (corresponding author), Ben Gurion Univ Negev, Dept Geog & Environm Dev, IL-8410501 Beer Sheva, Israel. ; Erel, R (corresponding author), Agr Res Org, Inst Soil Water & Environm Sci, Gilat Res Ctr, IL-85820 Tel Aviv, Israel.
来源期刊	NEW PHYTOLOGIST
ISSN	0028-646X
EISSN	1469-8137
出版年	2021
卷号	230 期号:6 页码:2213-2225
英文摘要	Phosphorus (P) scarcity constrains plant growth in many ecosystems worldwide. In P-poor ecosystems, the biogeochemical paradigm links plant productivity with the deposition of P-rich dust originating from desert storms. However, dust P usually has low bioavailability and is thought to be utilized solely via roots. We applied desert dust on the leaf surface of P-deficient and P-sufficient wheat, chickpea and maize to test the feasibility of direct foliar uptake of dust-P and investigate its related acquisition mechanisms. Foliar dust doubled the growth of P-deficient chickpea and wheat, crops originating near the Syrian Desert. P deficiency stimulated several leaf modifications that enabled acquisition of up to 30% of the sparingly soluble dust-P that is conventionally perceived as unavailable. These modifications increased foliar dust capture, acidified the leaf surface and, in chickpea, enhanced exudation of P-solubilizing organic acids. Maize (originating far from deserts) displayed only a marginal response to dust. The dramatic response of chickpea and wheat in comparison to maize suggests that plants that evolved in dust-rich ecosystems adopted specialized utilization strategies. Interestingly, the abovementioned foliar responses are comparable to known P uptake root responses. Given that P limitation is almost universal, a foliar P uptake pathway will have significant ecological and agricultural implications.
英文关键词	desert dust foliar uptake leaf surface organic exudates plant nutrition phosphorus
类型	Article
语种	英语
收录类别	SCI-E
WOS记录号	WOS:000639114200001
WOS类目	Plant Sciences
WOS研究方向	Plant Sciences
来源机构	Ben-Gurion University of the Negev
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/351207
作者单位	[Gross, Avner; Tiwari, Sudeep] Ben Gurion Univ Negev, Dept Geog & Environm Dev, IL-8410501 Beer Sheva, Israel; [Tiwari, Sudeep; Erel, Ran] Agr Res Org, Inst Soil Water & Environm Sci, Gilat Res Ctr, IL-85820 Tel Aviv, Israel; [Shtein, Ilana] Eastern Reg Res & Dev Ctr, IL-40700 Ariel, Israel
推荐引用方式 GB/T 7714	Gross, Avner,Tiwari, Sudeep,Shtein, Ilana,et al. Direct foliar uptake of phosphorus from desert dust[J]. Ben-Gurion University of the Negev,2021,230(6):2213-2225.
APA	Gross, Avner,Tiwari, Sudeep,Shtein, Ilana,&Erel, Ran.(2021).Direct foliar uptake of phosphorus from desert dust.NEW PHYTOLOGIST,230(6),2213-2225.
MLA	Gross, Avner,et al."Direct foliar uptake of phosphorus from desert dust".NEW PHYTOLOGIST 230.6(2021):2213-2225.