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首页> 外文期刊>Journal of Experimental Botany >Absorption of foliar-applied Zn fertilizers by trichomes in soybean and tomato
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Absorption of foliar-applied Zn fertilizers by trichomes in soybean and tomato

机译：大豆和番茄中毛细胞吸收叶面涂覆的Zn肥料

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摘要

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.
机译：本研究研究了毛状物在大豆和番茄中吸收叶面涂覆的锌肥的作用。使用基于同步氧化物的X射线荧光显微镜进行水合叶片的原位分析，我们发现在ZnSO4的叶面施用时，在大豆的一些非腺毛状体中累积在15分钟内，但不在番茄中累积。然而，大豆叶片的横截面的分析并未显示在胎儿周围的组织中的任何明显的Zn积累。此外，当使用胎儿密度的近似大豆的近代大豆不同10倍的近似的大豆，发现叶状锌吸收与胎儿密度无关。因此，建议胎儿不是主要途径的一部分，通过该途径通过其在大豆和番茄中穿过叶片表面上移动的主要途径。然而，这并不排除在其他植物物种中重要的毛粒，因为他们已知是高度多样化的。我们还将Zn的吸收与ZnSO4，纳米 - ZnO或Buk-ZnO提供相比，发现从ZnSO 4吸收比纳米和ZnO高约10倍，表明它主要被吸收为可溶性Zn。本研究提高了我们对吸收叶面应用营养素的理解。

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