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水光相互作用及其对绒毛幼苗形态生理学的影响。

Water-Light Interaction and Its Effect on the Morphophysiology of Vell. Seedlings.

作者信息

Silverio Juliana Milene, Scalon Silvana de Paula Quintão, Santos Cleberton Correia, Linné Jéssica Aline, Dias Anderson Dos Santos, Bernardes Rodrigo da Silva, Dantas Thaise

机构信息

Faculty of Agricultural Science, Federal University of Grande Dourados, Road Dourados-Itahum Km 1, Dourados 79804970, MS, Brazil.

出版信息

Plants (Basel). 2024 Sep 22;13(18):2654. doi: 10.3390/plants13182654.

DOI:10.3390/plants13182654
PMID:39339629
原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC11434871/
Abstract

Plant responses to different light and water availability are variable among species and their respective phenotypic plasticity, and the combination between these two abiotic factors can alleviate or intensify stressful effects. This study aimed to evaluate the impacts of exposure time of Vell. seedlings to different water and light availability considering natural radiation variations and the interaction of these factors. Seedlings were submitted to combinations of three shading levels-SH (0, 30 and 70%) and three water regimes based on the water holding capacity (WHC) in the substrate, constituting nine cultivation conditions: T1-0% SH + 40% WHC; T2-0% SH + 70% WHC; T3-0% SH + 100% WHC; T4-30% SH + 40% WHC; T5-30% SH + 70% WHC; T6-30% SH + 100% WHC; T7-70% SH + 40% WHC; T8-70% SH + 70% WHC; T9-70% SH + 100% WHC. seedlings are sensitive to water deficit, here represented by 40% WHC, regardless of exposure time, and when cultivated in full sun even though there are variations in radiation, the stressful effects were enhanced, acting in a synergistic manner. The condition that provided better gas exchange performance and greater total dry mass accumulation for seedlings was 30% shading combined with 100% WHC. seedlings have physiological plasticity and resilience to survive under different water and light conditions.

摘要

植物对不同光照和水分可利用性的反应在物种及其各自的表型可塑性之间存在差异，这两个非生物因素之间的组合可以减轻或加剧胁迫效应。本研究旨在考虑自然辐射变化以及这些因素的相互作用，评估Vell.幼苗暴露于不同水分和光照可利用性下的时间影响。幼苗被置于三种遮荫水平-SH（0%、30%和70%）与基于基质持水量（WHC）的三种水分处理的组合中，构成九种栽培条件：T1-0%遮荫+40%WHC；T2-0%遮荫+70%WHC；T3-0%遮荫+100%WHC；T4-30%遮荫+40%WHC；T5-30%遮荫+70%WHC；T6-30%遮荫+100%WHC；T7-70%遮荫+40%WHC；T8-70%遮荫+70%WHC；T9-70%遮荫+100%WHC。幼苗对水分亏缺敏感，这里以40%WHC表示，无论暴露时间如何，并且当在全日照下栽培时，即使辐射存在变化，胁迫效应也会增强，以协同方式起作用。为幼苗提供更好气体交换性能和更大总干物质积累的条件是30%遮荫与100%WHC相结合。幼苗具有生理可塑性和恢复力，能够在不同的水分和光照条件下存活。

https://cdn.ncbi.nlm.nih.gov/pmc/blobs/d619/11434871/df71f1dca7dc/plants-13-02654-g007.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/d619/11434871/79bb6b7a7561/plants-13-02654-g001.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/d619/11434871/01b8c874e85a/plants-13-02654-g002.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/d619/11434871/d13d00c0300b/plants-13-02654-g003.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/d619/11434871/584cf4bf25a7/plants-13-02654-g004.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/d619/11434871/8fb432d3e2a5/plants-13-02654-g005.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/d619/11434871/40275bcb76a6/plants-13-02654-g006.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/d619/11434871/df71f1dca7dc/plants-13-02654-g007.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/d619/11434871/79bb6b7a7561/plants-13-02654-g001.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/d619/11434871/01b8c874e85a/plants-13-02654-g002.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/d619/11434871/d13d00c0300b/plants-13-02654-g003.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/d619/11434871/584cf4bf25a7/plants-13-02654-g004.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/d619/11434871/8fb432d3e2a5/plants-13-02654-g005.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/d619/11434871/40275bcb76a6/plants-13-02654-g006.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/d619/11434871/df71f1dca7dc/plants-13-02654-g007.jpg

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本文引用的文献

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2
Photosynthetic plasticity aggravates the susceptibility of magnesium-deficient leaf to high light in rapeseed plants: the importance of Rubisco and mesophyll conductance.光合作用的可塑性加剧了缺镁叶片对油菜植物高光的敏感性：Rubisco 和叶肉导度的重要性。
Plant J. 2024 Jan;117(2):483-497. doi: 10.1111/tpj.16504. Epub 2023 Oct 30.
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Plasticity of mesophyll cell density and cell wall thickness and composition play a pivotal role in regulating plant growth and photosynthesis under shading in rapeseed.
叶片细胞密度和细胞壁厚度及组成的可塑性在调控油菜受光抑制时的生长和光合作用中起着关键作用。
Ann Bot. 2023 Nov 30;132(5):963-978. doi: 10.1093/aob/mcad140.
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Integration of light and ABA signaling pathways to combat drought stress in plants.整合光和 ABA 信号通路以应对植物干旱胁迫。
Plant Cell Rep. 2023 May;42(5):829-841. doi: 10.1007/s00299-023-02999-7. Epub 2023 Mar 12.
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Light harvesting regulation: A versatile network of key components operating under various stress conditions in higher plants.光捕获调节：高等植物中在各种胁迫条件下运行的关键组分的多功能网络。
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