Absorption of foliar-applied Zn fertilizers by trichomes in soybean and tomato

Cui Li; Peng Wang; Enzo Lombi; Miaomiao Cheng; Caixian Tang; Daryl L. Howard; Neal W. Menzies; Peter M. Kopittke

doi:10.1093/jxb/ery085

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Absorption of foliar-applied Zn fertilizers by trichomes in soybean and tomato

Journal article

Open access

Peer reviewed

Absorption of foliar-applied Zn fertilizers by trichomes in soybean and tomato

Cui Li, Peng Wang, Enzo Lombi, Miaomiao Cheng, Caixian Tang, Daryl L. Howard, Neal W. Menzies and Peter M. Kopittke

Journal of experimental botany, Vol.69(10), pp.2717-2729

2018

DOI: https://doi.org/10.1093/jxb/ery085

PMCID: PMC5920297

PMID: 29514247

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Abstract

Life Sciences & Biomedicine

Plant Sciences

Science & Technology

The present study investigated the role of trichomes in absorption of foliar-applied zinc fertilizers in soybean and tomato. Using synchrotron-based X-ray fluorescence microscopy for in situ analyses of hydrated leaves, we found that upon foliar application of ZnSO4, Zn accumulated within 15 min in some non-glandular trichomes in soybean, but not in tomato. However, analyses of cross-sections of soybean leaves did not show any marked accumulation of Zn in tissues surrounding trichomes. Furthermore, when near-isogenic lines of soybean differing 10-fold in trichome density were used to compare Zn absorption, it was found that foliar Zn absorption was not related to trichome density. Therefore, it is suggested that trichomes are not part of the primary pathway through which foliar-applied Zn moves across the leaf surface in soybean and tomato. However, this does not preclude trichomes being important in other plant species, as they are known to be highly diverse. We also compared the absorption of Zn when supplied as either ZnSO4, nano-ZnO, or bulk-ZnO, and found that absorption from ZnSO4 was about 10-fold higher than from nano-and bulk-ZnO, suggesting that it was mainly absorbed as soluble Zn. This study improves our understanding of the absorption of foliar-applied nutrients.

Details

Title: Absorption of foliar-applied Zn fertilizers by trichomes in soybean and tomato
Authors/Creators: Cui Li - The University of Queensland
Peng Wang - The University of Queensland
Enzo Lombi - University of South Australia
Miaomiao Cheng - La Trobe University
Caixian Tang - La Trobe University
Daryl L. Howard - Australian Synchrotron
Neal W. Menzies - The University of Queensland
Peter M. Kopittke - The University of Queensland
Publication Details: Journal of experimental botany, Vol.69(10), pp.2717-2729
Publisher: Oxford University Press on behalf of the Society for Experimental Biology.
Number of pages: 13
Grant note: Sonic Essentials LP130100741 / Australian Research Council (ARC); Australian Research Council China Scholarship Council University of Queensland International Scholarship award scheme FT120100277 / ARC Future Fellowship; Australian Research Council
Identifiers: 991005620326707891
Murdoch Affiliation: Centre for Sustainable Farming Systems
Language: English
Resource Type: Journal article

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#12 Responsible Consumption & Production

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84 Times Cited - Web of Science

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Collaboration types: Domestic collaboration; International collaboration
Citation topics: 3 Agriculture, Environment & Ecology; 3.4 Crop Science; 3.4.1474 Micronutrient Interactions
Web Of Science research areas: Plant Sciences
ESI research areas: Plant & Animal Science