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JIPB丨中国农业大学张永亮课题组发表植物NLR蛋白工程化改造评述文章

  • 2026-02-09 04:25:53
JIPB丨中国农业大学张永亮课题组发表植物NLR蛋白工程化改造评述文章

近年来,病毒引起的植物在全球范围内频发且传播迅速,已成为威胁农业生产和粮食安全的重要因素。传统化学防控措施主要面向真菌、细菌、卵菌和线虫等病原物。而针对病毒引发的植物病害,现有化学防控手段有限,且病毒的快速变异易导致抗性基因失效。核苷酸结合富亮氨酸重复受体 (Nucleotide-binding leucine-rich repeat receptor, NLR) 细胞内免疫核心蛋白,对其进行工程化改造以实现定制识别,已成为抗病育种研究的重要方向之一

近日,中国农业大学张永亮课题组在JIPB发表了题为"From uncontrolled to controllable: A novel approach for nucleotide-binding, leucine-rich repeat bioengineering"的评述文章 (https://doi.org/10.1111/jipb.70046)。该文评述了《Nature》近期发表的一项创新策略——利用融合阻断肽使激活型NLR蛋白能够有效抵御马铃薯Y病毒科病毒。

该文首先系统梳理了NLR工程化改造的代表性策略与关键进展:一是LRR结构域突变,通过理性/随机突变或片段置换,赋予对新效应因子的识别能力 (1A);二是整合结构域的工程化改造,扩展了效应因子的识别范围,包括对HMA整合结构域的改造,或整合纳米抗体形成可编程识别” (Pikobody) (1B);三是感受型辅助型NLR协同转移,在远缘作物中重建免疫响应 (1C);四是本文重点讨论的自激活型NLR (aNLR) 策略:在自激活型NLRN端融合携带病原蛋白酶切割位点 (PCS) 的阻断肽,使自激活型NLR在无病原时关闭”,而病原入侵并切除PCS激活,从而精准触发免疫。该思路已在模式植物本生烟和经济作物大豆中得到验证,可对多种马铃薯Y病毒科病毒实现完全/极端抗性,且不引起生长代;通过串联不同PCS还能进一步扩展病原识别谱 (1D)。评述对比了各策略的优势与短板,强调aNLR病原保守功能免疫触发信号的转换为核心创新,兼具简洁、可移植与拓展潜力。

常见植物NLR工程化改造策略示意图

文章指出,aNLR把受体激活上锁并借病原蛋白酶开锁,在原理上有望外延到同样依赖或分泌蛋白酶的其他病原 (细菌、真菌、卵菌线虫等),并有望CRISPR/Cas结合实现对作物内源NLR基因的精准突变+敲入,从而创制抗病新品种。与此同时,仍需关注不同NLRN端改造的兼容性、病原蛋白酶切位点变异的潜在压力,以及在水稻、小麦和玉米等单子叶作物中应用的可行性田间环境测试。总体而言,本评述简要总结了现有的植物NLR工程化改造策略,尤其凸显aNLR实现强抗性、低代价、易扩展上的应用前景。

中国农业大学生物学院张永亮教授该评述通讯作者中国农业大学生物学院在读博士李依第一作者美国加州大学戴维斯分校的Savithramma P.Dinesh-Kumar教授、中国农大在读博士生晨皓王馨晨和毕业生钟陈辰博士参与了撰写,该研究由国家自然科学基金资助完成。

文章引用:

Li, Y., Ma, C, H., Wang, X, C., Zhong, C, C., Dinesh-Kumar, S, P., Zhang, Y, L. (2025). From uncontrolled to controllable: A novel approach for nucleotide‐binding, leucine‐rich repeat bioengineering. J. Integr. Plant Biol.https://doi.org/10.1111/jipb.70046

域合集:

#Abiotic Stress Responses# 

#Cell and Developmental Biology#

#Functional Omics and Systems Biology# 

#Global Change Biology#

#Gene Editing#

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#Plant Biotic Interactions#   

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#Synthetic Biology# 

物种合集:

#水稻##小麦##大豆##玉米##拟南芥##蔬菜##园艺植物#

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  1. CONNECT:[ UseTime:0.000939s ] mysql:host=127.0.0.1;port=3306;dbname=h_mffb;charset=utf8mb4
  2. SHOW FULL COLUMNS FROM `fenlei` [ RunTime:0.001420s ]
  3. SELECT * FROM `fenlei` WHERE `fid` = 0 [ RunTime:0.002214s ]
  4. SELECT * FROM `fenlei` WHERE `fid` = 63 [ RunTime:0.000726s ]
  5. SHOW FULL COLUMNS FROM `set` [ RunTime:0.001346s ]
  6. SELECT * FROM `set` [ RunTime:0.000648s ]
  7. SHOW FULL COLUMNS FROM `article` [ RunTime:0.001505s ]
  8. SELECT * FROM `article` WHERE `id` = 469644 LIMIT 1 [ RunTime:0.004482s ]
  9. UPDATE `article` SET `lasttime` = 1770700836 WHERE `id` = 469644 [ RunTime:0.003991s ]
  10. SELECT * FROM `fenlei` WHERE `id` = 64 LIMIT 1 [ RunTime:0.000657s ]
  11. SELECT * FROM `article` WHERE `id` < 469644 ORDER BY `id` DESC LIMIT 1 [ RunTime:0.001061s ]
  12. SELECT * FROM `article` WHERE `id` > 469644 ORDER BY `id` ASC LIMIT 1 [ RunTime:0.001021s ]
  13. SELECT * FROM `article` WHERE `id` < 469644 ORDER BY `id` DESC LIMIT 10 [ RunTime:0.032225s ]
  14. SELECT * FROM `article` WHERE `id` < 469644 ORDER BY `id` DESC LIMIT 10,10 [ RunTime:0.017020s ]
  15. SELECT * FROM `article` WHERE `id` < 469644 ORDER BY `id` DESC LIMIT 20,10 [ RunTime:0.024761s ]
0.184629s