生理学和转录组学分析揭示了水生植物多根螺旋藻对营养缺乏的响应机制。

IF 3.8 2区 生物学 Q2 BIOCHEMISTRY & MOLECULAR BIOLOGY
Xuyao Zhao, Xiaozhe Li, Zuoliang Sun, Gaojie Li, Wenjun Guo, Yan Chen, Manli Xia, Yimeng Chen, Xiaoyu Wang, Yixian Li, Kangsheng Luo, Mingfei Ji, Pengfei Duan, Jingjing Yang, Hongwei Hou
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引用次数: 0

摘要

大型植物是淡水生态系统中重要的初级生产者,为支持不断增长的人口提供了潜在的作物资源。它们也被广泛用于缓解富营养化。与陆生植物相比,水生植物适应的环境更加复杂、多变和不稳定,尤其是养分环境的波动。氮(N)和磷(P)是植物的关键营养元素,在不同的生态系统中,它们的生物地球化学循环受到人为活动的显著破坏。然而,目前对水生植物对氮磷胁迫的适应机制还缺乏全面的认识。本研究分析了多根螺旋藻在不同营养条件下的响应机制。在生理水平上,多根参在营养缺乏条件下表现出根系生长加快、Chl含量降低、根茎比和淀粉含量升高等普遍变化。确定了参与营养获取和再动员、碳代谢、转录调节、激素和抗氧化系统的基因。生理和转录变化表明,在营养缺乏条件下,多根草采用了与陆生植物相似的营养获取优先策略。转录后调控网络也强调了非编码rna营养应激反应的关键作用。总体而言,多根参采用综合的生理和分子策略来应对水生环境中的营养缺乏。本研究对其适应性反应提供了全面的认识,并为进一步发现新基因和功能分析提供了宝贵的遗传资源。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Physiological and transcriptomic analysis reveal the response mechanisms to nutrient deficiencies in aquatic plant Spirodela polyrhiza.

Macrophytes are critical primary producers in freshwater ecosystems and offer potential as crop resources to support the growing human population. They are also widely used to mitigate eutrophication. Aquatic plants adapt themselves to the more complicated, changeable, and unstable conditions compared to terrestrial plants, especially the fluctuating nutrient environments. Nitrogen (N) and phosphorus (P) are the key nutrient elements for plants, and their biogeochemical cycles have been significantly disrupted by anthropogenic activities in diverse ecosystems. However, there is still a lack of comprehensive understanding about the adaptive mechanisms of N and P stress in aquatic plants. In this study, the response mechanisms in the macrophyte Spirodela polyrhiza under various nutrient conditions were analyzed. S. polyrhiza showed universal changes under nutrient deficiencies at the physiological level, including enhanced root growth, lower Chl content, higher Root-Frond ratio, and starch content. Genes involved in nutrient acquisition and remobilization, carbon metabolism, transcriptional regulation, hormones, and antioxidant systems were identified. Physiological and transcriptional changes revealed that the macrophyte S. polyrhiza adopts a nutrient acquisition-prioritization strategy under nutrient deficiency conditions, employing strategies similar to those observed in terrestrial plants. Post-transcriptional regulatory networks also highlighted the critical role of non-coding RNAs nutrient stress responses. Overall, S. polyrhiza employs integrated physiological and molecular strategies to cope with nutrient deficiency in aquatic environments. This study provides comprehensive insights into its adaptive responses and offers a valuable genetic resource for further novel gene discovery and functional analysis.

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来源期刊
Plant Molecular Biology
Plant Molecular Biology 生物-生化与分子生物学
自引率
2.00%
发文量
95
审稿时长
1.4 months
期刊介绍: Plant Molecular Biology is an international journal dedicated to rapid publication of original research articles in all areas of plant biology.The Editorial Board welcomes full-length manuscripts that address important biological problems of broad interest, including research in comparative genomics, functional genomics, proteomics, bioinformatics, computational biology, biochemical and regulatory networks, and biotechnology. Because space in the journal is limited, however, preference is given to publication of results that provide significant new insights into biological problems and that advance the understanding of structure, function, mechanisms, or regulation. Authors must ensure that results are of high quality and that manuscripts are written for a broad plant science audience.
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