Variation in suppression of black-grass by modern and ancestral cereal root exudates

IF 3.6 3区 生物学 Q1 PLANT SCIENCES Plant Biology Pub Date : 2025-03-26 DOI:10.1111/plb.70010
D. T. Hickman, D. M. Withall, J. C. Caulfield, D. Comont, K. Ritz, P. Neve, A. Rasmussen, M. A. Birkett
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现代和祖先谷物根系分泌物对黑草抑制作用的差异。
本研究旨在确定六倍体小麦(Triticum aestivum)、祖先二倍体小麦(T. monococum)和黑麦(Secale cereale)根系分泌物抑制耕地杂草黑草(Alopecurus myosuroides)的变异性及其对草食性病虫害抗性的变异性。由于苯并恶嗪类化合物被认为在抵抗这些应激源和化感作用中起作用,我们也旨在鉴定根分泌物中的化合物。我们进行了体外和温室生物测定,以确定广泛的粗谷物根分泌物及其成分化合物在无菌和生物活性培养基中抑制黑草的功效。用LC-MS分析了这些分泌物的成分,并分析了六倍体小麦、二倍体小麦和黑麦之间的差异。粗根分泌物对黑麦草根系发育均有不同程度的抑制作用,其中对黑麦草最有效的是黑麦草品种Edmondo和单孢黑麦草MDR037。根系分泌物中苯并恶嗪类化合物的含量各不相同,祖代小麦系和黑麦比六倍体小麦分泌的苯并恶嗪类化合物少,但株系间差异较大。与T. aestivum var.重力共培养显著抑制了黑草幼苗的早期生长和生物量,但在同一体系中,单独的苯并恶嗪类药物对黑草没有影响。这些数据提供了证据,证明谷物与黑草的相互作用受到根系分泌物的影响,但它们的效果不能通过直接施用单个成分化合物来复制。
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来源期刊
Plant Biology
Plant Biology 生物-植物科学
CiteScore
8.20
自引率
2.60%
发文量
109
审稿时长
3 months
期刊介绍: Plant Biology is an international journal of broad scope bringing together the different subdisciplines, such as physiology, molecular biology, cell biology, development, genetics, systematics, ecology, evolution, ecophysiology, plant-microbe interactions, and mycology. Plant Biology publishes original problem-oriented full-length research papers, short research papers, and review articles. Discussion of hot topics and provocative opinion articles are published under the heading Acute Views. From a multidisciplinary perspective, Plant Biology will provide a platform for publication, information and debate, encompassing all areas which fall within the scope of plant science.
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