Exploring Birch Salt Tolerance Using Gene Regulatory Network Highlighting Hormone Signaling, Reactive Oxygen Species Scavenging, and Ion Homeostasis.

IF 5.4 2区 生物学 Q1 PLANT SCIENCES
Jingxin Wang, Xiaomeng Sun, Pengyu Wang, Siqi Wu, Yucheng Wang
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引用次数: 0

Abstract

Salt stress presents a formidable challenge for plant survival, yet the intricate regulatory networks dictating salt-tolerant gene expression remain elusive. This research delineates a gene regulatory network (GRN) in birch (Betula platyphylla) under salt stress, utilizing a partial correlation coefficient-based algorithm. The GRN comprises three hierarchical layers: the top layer with 5 transcription factors (TFs), the middle layer with 22 TFs, and the bottom layer encompassing 345 structural genes, totaling 1458 regulatory interactions. Validation through ChIP-PCR and qRT-PCR confirmed approximately 87.5% and 68.7% accuracy of predicted interactions in the top-middle and middle-bottom layers, respectively. The GRN underscores the pivotal roles of abscisic acid (ABA), jasmonic acid (JA), and cytokinin (CK) signaling pathways, emphasizing ROS scavenging and ion homeostasis as critical for salt tolerance. Among the top layer TFs, BpERF105 demonstrated superior salt tolerance, positioning it as a key regulatory element. This study posits that birch's salt tolerance is orchestrated through a regulatory homeostasis mediated by intricate TF-TF and TF-DNA interactions, providing profound insights into the molecular underpinnings of plant salt stress responses.

利用激素信号、活性氧清除和离子稳态等基因调控网络探索桦树耐盐性。
盐胁迫对植物的生存提出了严峻的挑战,但调控耐盐基因表达的复杂调控网络仍然难以捉摸。本研究利用基于偏相关系数的算法,描述了盐胁迫下桦树(Betula platyphylla)基因调控网络。GRN由三层组成:顶层有5个转录因子,中间层有22个转录因子,底层有345个结构基因,共1458个调控相互作用。通过ChIP-PCR和qRT-PCR验证,预测上-中层和中-底层相互作用的准确度分别约为87.5%和68.7%。GRN强调脱落酸(ABA)、茉莉酸(JA)和细胞分裂素(CK)信号通路的关键作用,强调ROS清除和离子稳态对耐盐性至关重要。在顶层TFs中,BpERF105表现出优异的耐盐性,是一个关键的调控元件。本研究认为,桦树的耐盐性是通过复杂的TF-TF和TF-DNA相互作用介导的调节稳态来协调的,为植物盐胁迫反应的分子基础提供了深刻的见解。
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来源期刊
Physiologia plantarum
Physiologia plantarum 生物-植物科学
CiteScore
11.00
自引率
3.10%
发文量
224
审稿时长
3.9 months
期刊介绍: Physiologia Plantarum is an international journal committed to publishing the best full-length original research papers that advance our understanding of primary mechanisms of plant development, growth and productivity as well as plant interactions with the biotic and abiotic environment. All organisational levels of experimental plant biology – from molecular and cell biology, biochemistry and biophysics to ecophysiology and global change biology – fall within the scope of the journal. The content is distributed between 5 main subject areas supervised by Subject Editors specialised in the respective domain: (1) biochemistry and metabolism, (2) ecophysiology, stress and adaptation, (3) uptake, transport and assimilation, (4) development, growth and differentiation, (5) photobiology and photosynthesis.
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