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231225s2021 xx |||||o 00| ||eng c |
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|a 10.1111/nph.17344
|2 doi
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|a eng
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|a Gross, Avner
|e verfasserin
|4 aut
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| 245 |
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|a Direct foliar uptake of phosphorus from desert dust
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|c 2021
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|a Text
|b txt
|2 rdacontent
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|a ƒaComputermedien
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|2 rdamedia
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|a ƒa Online-Ressource
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|a Date Completed 04.06.2021
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|a Date Revised 04.06.2021
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|a published: Print-Electronic
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|a Citation Status MEDLINE
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|a © 2021 The Authors New Phytologist © 2021 New Phytologist Foundation.
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|a 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
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|a Journal Article
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|a Research Support, Non-U.S. Gov't
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|a desert dust
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| 650 |
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|a foliar uptake
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| 650 |
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4 |
|a leaf surface
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| 650 |
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4 |
|a organic exudates
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| 650 |
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4 |
|a phosphorus
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| 650 |
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4 |
|a plant nutrition
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| 650 |
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|a Dust
|2 NLM
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| 650 |
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|a Phosphorus
|2 NLM
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| 650 |
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| 700 |
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|a Tiwari, Sudeep
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| 700 |
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|a Shtein, Ilana
|e verfasserin
|4 aut
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| 700 |
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|a Erel, Ran
|e verfasserin
|4 aut
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| 773 |
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|i Enthalten in
|t The New phytologist
|d 1984
|g 230(2021), 6 vom: 01. Juni, Seite 2213-2225
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|x 1469-8137
|7 nnas
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|g volume:230
|g year:2021
|g number:6
|g day:01
|g month:06
|g pages:2213-2225
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|u http://dx.doi.org/10.1111/nph.17344
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