{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,10,31]],"date-time":"2026-10-31T02:33:06Z","timestamp":1793413986794,"version":"4.5.0"},"reference-count":74,"publisher":"Frontiers Media SA","license":[{"start":{"date-parts":[[2026,1,6]],"date-time":"2026-01-06T00:00:00Z","timestamp":1767657600000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by\/4.0\/"}],"content-domain":{"domain":["frontiersin.org"],"crossmark-restriction":true},"short-container-title":["Front. Plant Sci."],"abstract":"<jats:sec>\n                    <jats:title>Introduction<\/jats:title>\n                    <jats:p>Silicon nanoparticles (SiNPs) effectively mitigate drought stress in crops, yet their physiological mechanisms in maize remain unclear.<\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec>\n                    <jats:title>Methods<\/jats:title>\n                    <jats:p>This study conducted field experiments in the arid region of northwest China, setting up three maize genotypes (Zhengdan 958, Zhongdan 2, and MC670), two irrigation methods (full irrigation, FI, and regulated deficit irrigation, RDI), and two exogenous treatments (water as control, and SiNPs application).<\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec>\n                    <jats:title>Results<\/jats:title>\n                    <jats:p>\n                      The RDI increased stomatal density (\n                      <jats:italic>SD<\/jats:italic>\n                      ), intrinsic water use efficiency (iWUE), and water productivity (WP), albeit with a slight reduction in yield. However, the application of SiNPs increased the yield and WP across all three genotypes under both FI and RDI. Additionally, SiNPs notably enhanced SPAD values, stomatal conductance (\n                      <jats:italic>g<\/jats:italic>\n                      <jats:sub>s<\/jats:sub>\n                      ), net photosynthesis rate (\n                      <jats:italic>A<\/jats:italic>\n                      ), leaf area index (LAI), and the fraction of photosynthetically active radiation (\n                      <jats:italic>f<\/jats:italic>\n                      <jats:sub>PAR<\/jats:sub>\n                      ), while reducing the leaf inclination angle (LIA) at the middle ear position. Further analysis revealed the following mechanisms: (1) an increase in SPAD and\n                      <jats:italic>\n                        g\n                        <jats:sub>s<\/jats:sub>\n                      <\/jats:italic>\n                      enhanced\n                      <jats:italic>A<\/jats:italic>\n                      ; (2) enhanced LAI and reduced LIA at the ear-bearing canopy layers significantly improved\n                      <jats:italic>f<\/jats:italic>\n                      <jats:sub>PAR<\/jats:sub>\n                      ; and (3) the combined increase in\n                      <jats:italic>A<\/jats:italic>\n                      and\n                      <jats:italic>f<\/jats:italic>\n                      <jats:sub>PAR<\/jats:sub>\n                      synergistically contributed to increased maize yield. The improvements in WP were more strongly correlated with yield gains than with changes in evapotranspiration.\n                    <\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec>\n                    <jats:title>Discussion<\/jats:title>\n                    <jats:p>The findings demonstrate that SiNPs improve maize productivity and water use efficiency under both full and deficit irrigation by coordinately enhancing photosynthetic performance and optimizing canopy light interception. The results provide physiological insights into how SiNPs alleviate drought-related limitations in maize. These findings offer important theoretical insights and a practical strategy for employing SiNPs as a sustainable crop enhancer under water-limited conditions.<\/jats:p>\n                  <\/jats:sec>","DOI":"10.3389\/fpls.2025.1691443","type":"journal-article","created":{"date-parts":[[2026,1,6]],"date-time":"2026-01-06T06:33:32Z","timestamp":1767681212000},"update-policy":"https:\/\/doi.org\/10.3389\/crossmark-policy","source":"Crossref","is-referenced-by-count":8,"title":["Silicon nanoparticles enhance maize yield and water productivity via regulating photosynthesis and canopy structure under mild regulated deficit irrigation"],"prefix":"10.3389","volume":"16","author":[{"given":"Xukai","family":"Liang","sequence":"first","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Qi","family":"Liao","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Panpan","family":"Guo","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Ziyi","family":"Yang","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Shaozhong","family":"Kang","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Taisheng","family":"Du","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Ling","family":"Tong","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Risheng","family":"Ding","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"1965","published-online":{"date-parts":[[2026,1,6]]},"reference":[{"key":"B1","doi-asserted-by":"publisher","DOI":"10.1016\/j.heliyon.2024.e26077","article-title":"Exogenous application of nano-silicon, potassium sulfate, or proline enhances physiological parameters, antioxidant enzyme activities, and agronomic traits of diverse rice genotypes under water deficit conditions","volume":"10","author":"Abd-El-Aty","year":"2024","journal-title":"Heliyon"},{"key":"B2","doi-asserted-by":"publisher","DOI":"10.1016\/j.agwat.2020.106544","article-title":"Nano-fertilizers improved drought tolerance in wheat under deficit irrigation","volume":"244","author":"Ahmadian","year":"2021","journal-title":"Agric. 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