Understanding aquaporin transport system, silicon and other metalloids uptake and deposition in bottle gourd ( Lagenaria siceraria )

文献类型： 外文期刊

第一作者： Kumawat, Surbhi

作者： Kumawat, Surbhi;Khatri, Praveen;Ahmed, Ashique;Vats, Sanskriti;Kumar, Virender;Jaswal, Rajdeep;Mandlik, Rushil;Shivaraj, S. M.;Sonah, Humira;Sharma, Tilak Raj;Deshmukh, Rupesh;Kumawat, Surbhi;Mandlik, Rushil;Ahmed, Ashique;Wang, Ying;Xu, Pei;Deokar, Amit;Sharma, Tilak Raj

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关键词： Aquaporins; Solute specificity; Conserved features; Transcriptome profiling; Silicon uptake; Metalloids

期刊名称：JOURNAL OF HAZARDOUS MATERIALS （ 影响因子：10.588； 五年影响因子：10.129 ）

ISSN： 0304-3894

年卷期： 2021 年 409 卷

页码：

收录情况： SCI

摘要： Aquaporins (AQPs) facilitates the transport of small solutes like water, urea, carbon dioxide, boron, and silicon (Si) and plays a critical role in important physiological processes. In this study, genome-wide characterization of AQPs was performed in bottle gourd. A total of 36 AQPs were identified in the bottle gourd, which were subsequently analyzed to understand the pore-morphology, exon-intron structure, subcellular-localization. In addition, available transcriptome data was used to study the tissue-specific expression. Several AQPs showed tissue-specific expression, more notably the LsiTIP3-1 having a high level of expression in flowers and fruits. Based on the in-silico prediction of solute specificity, LsiNIP2-1 was predicted to be a Si transporter. Silicon was quantified in different tissues, including root, young leaves, mature leaves, tendrils, and fruits of bottle gourd plants. More than 1.3% Si (d.w.) was observed in bottle gourd leaves, testified the in-silico predictions. Silicon deposition evaluated with an energy-dispersive X-ray coupled with a scanning electron microscope showed a high Si accumulation in the shaft of leaf trichomes. Similarly, co-localization of Si with arsenic and antimony was observed. Expression profiling performed with real-time quantitative PCR showed differential expression of AQPs in response to Si supplementation. The information provided in the present study will be helpful to better understand the AQP transport mechanism, particularly Si and other metalloids transport and localization in plants.

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