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土壤盐渍化是限制农林业生产的主要非生物胁迫之一。为在盐碱环境中生存，植物需要对根系构型进行适应性重塑，以便更有效地获取水分和养分。在这一过程中，植物激素细胞分裂素（CK）发挥着核心调控作用。研究发现，A类响应因子（Type-A RRs）是调控CK信号的关键负调控元件，与植物的耐盐性密切相关。然而，A类响应因子自身缺乏DNA结合结构域，它们究竟是如何跨越这一结构障碍，实现对下游基因的精准转录调控尚不清楚。

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（图片来源：国家林业和草原局）

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