The soil microbiome modulates the sorghum root metabolome and cellular traits with a concomitant reduction of Striga infection
The soil microbiome modulates the sorghum root metabolome and cellular traits with a concomitant reduction of Striga infection
复制标题
DOI：
10.1016/j.celrep.2024.113971
复制
发表时间：
2024-04-23
期刊：
影响因子：
8.8
通讯作者：
Brady，Siobhan M.
中科院分区：
文献类型：
--
作者：
Kawa，Dorota;Thiombiano，Benjamin;Brady，Siobhan M.
高粱是全球最重要的谷物之一，也是撒哈拉以南非洲小农的主要作物。在非洲，由于根部寄生杂草独脚金的侵染，每年损失大约20%的高粱产量。现有的Striga管理策略并不是特别有效，需要采取综合措施。在这里，我们展示了土壤微生物组抑制高粱中独脚金感染的功能潜力。我们将这种抑制与微生物组介导的根内胚层栓化和通气组织形成的诱导以及吸器诱导因子（Striga感染的初始阶段所需的化合物）的耗尽相关联。我们进一步确定了特定的细菌类群，触发观察到的Striga抑制性状。总的来说，我们的研究描述了土壤微生物组在Striga根感染早期阶段的重要性，并指出了Striga抑制的机制。这些研究结果开辟了途径，以扩大综合Striga管理实践的有效性。
Sorghum bicoloris among the most important cereals globally and a staple crop for smallholder farmers in sub-Saharan Africa. Approximately 20% of sorghum yield is lost annually in Africa due to infestation with the root parasitic weedStriga hermonthica. Existing Striga management strategies are not singularly effective and integrated approaches are needed. Here, we demonstrate the functional potential of the soil microbiome to suppress Striga infection in sorghum. We associate this suppression with microbiome-mediated induction of root endodermal suberization and aerenchyma formation and with depletion of haustorium-inducing factors, compounds required for the initial stages of Striga infection. We further identify specific bacterial taxa that trigger the observed Striga-suppressive traits. Collectively, our study describes the importance of the soil microbiome in the early stages of root infection by Striga and pinpoints mechanisms of Striga suppression. These findings open avenues to broaden the effectiveness of integrated Striga management practices.