Nanoparticle size and coating chemistry control foliar uptake pathways, translocation and leaf-to-rhizosphere transport in wheat (Record no. 52125)

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fixed length control field 02833nam a2200325Ia 4500
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control field MX-MdCICY
005 - DATE AND TIME OF LATEST TRANSACTION
control field 20250625160221.0
040 ## - CATALOGING SOURCE
Transcribing agency CICY
090 ## - LOCALLY ASSIGNED LC-TYPE CALL NUMBER (OCLC); LOCAL CALL NUMBER (RLIN)
Classification number (OCLC) (R) ; Classification number, CALL (RLIN) (NR) B-17965
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245 10 - TITLE STATEMENT
Title Nanoparticle size and coating chemistry control foliar uptake pathways, translocation and leaf-to-rhizosphere transport in wheat
490 0# - SERIES STATEMENT
Volume/sequential designation ACS nano, 13(5), p. 5291-5305, 2019
520 3# - SUMMARY, ETC.
Summary, etc. Nanoenabled foliar-applied agrochemicals can potentially be safer and more efficient than conventional products. However, limited understanding about how nanoparticle properties influence their interactions with plant leaves, uptake, translocation through the mesophyll to the vasculature, and transport to the rest of the plant prevents rational design. This study used a combination of Au quantification and spatial analysis to investigate how size (3, 10, or 50 nm)and coating chemistry (PVP versus citrate)of gold nanoparticles (AuNPs)influence these processes. Following wheat foliar exposure to AuNPs suspensions (?280 ng per plant), adhesion on the leaf surface was increased for smaller sizes, and PVP-AuNPs compared to citrate-AuNPs. After 2 weeks, there was incomplete uptake of citrate-AuNPs with some AuNPs remaining on the outside of the cuticle layer. However, the fraction of citrate-AuNPs that had entered the leaf was translocated efficiently to the plant vasculature. In contrast, for similar sizes, virtually all of the PVP-AuNPs crossed the cuticle layer after 2 weeks, but its transport through the mesophyll cells was lower. As a consequence of PVP-AuNP accumulation in the leaf mesophyll, wheat photosynthesis was impaired. Regardless of their coating and sizes, the majority of the transported AuNPs accumulated in younger shoots (10-30 per cent)and in roots (10-25 per cent), and 5-15 per cent of the NPs <50 nm were exuded into the rhizosphere soil. A greater fraction of larger sizes AuNPs (presenting lower ? potentials)was transported to the roots. The key hypotheses about the NPs physical-chemical and plant physiology parameters that may matter to predict leaf-to-rhizosphere transport are also discussed.
650 14 - SUBJECT ADDED ENTRY--TOPICAL TERM
Topical term or geographic name entry element FOLIAR APPLICATION OF NANOPARTICLES
650 14 - SUBJECT ADDED ENTRY--TOPICAL TERM
Topical term or geographic name entry element UPTAKE PATHWAYS
650 14 - SUBJECT ADDED ENTRY--TOPICAL TERM
Topical term or geographic name entry element IN PLANTA TRANSLOCATION
650 14 - SUBJECT ADDED ENTRY--TOPICAL TERM
Topical term or geographic name entry element ROOT EXUDATION
650 14 - SUBJECT ADDED ENTRY--TOPICAL TERM
Topical term or geographic name entry element AGRICULTURE
650 14 - SUBJECT ADDED ENTRY--TOPICAL TERM
Topical term or geographic name entry element ENHANCED DARK-FIELD MICROSCOPY COUPLED WITH HYPERSPECTRAL IMAGING
650 14 - SUBJECT ADDED ENTRY--TOPICAL TERM
Topical term or geographic name entry element X-RAY
700 12 - ADDED ENTRY--PERSONAL NAME
Personal name Avellan, A.
700 12 - ADDED ENTRY--PERSONAL NAME
Personal name Yun, J.
700 12 - ADDED ENTRY--PERSONAL NAME
Personal name Zhang, Y.
700 12 - ADDED ENTRY--PERSONAL NAME
Personal name Spielman-Sun, E.
700 12 - ADDED ENTRY--PERSONAL NAME
Personal name Unrine, J. M.
700 12 - ADDED ENTRY--PERSONAL NAME
Personal name Thieme, J.
700 12 - ADDED ENTRY--PERSONAL NAME
Personal name Lowry, G. V.
856 40 - ELECTRONIC LOCATION AND ACCESS
Uniform Resource Identifier <a href="https://drive.google.com/file/d/1nwYuOEX19pWPtF9tGiO3RLLFGfkiyfUx/view?usp=drivesdk">https://drive.google.com/file/d/1nwYuOEX19pWPtF9tGiO3RLLFGfkiyfUx/view?usp=drivesdk</a>
Public note Para ver el documento ingresa a Google con tu cuenta: @cicy.edu.mx
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Source of classification or shelving scheme Clasificación local
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  Clasificación local     Ref1 CICY CICY Documento préstamo interbibliotecario 25.06.2025   B-17965 25.06.2025 25.06.2025 Documentos solicitados