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Multiple analysis of root exudates and microbiome in rice (Oryza sativa) under low P conditions.
Archives of Microbiology ( IF 2.8 ) Pub Date : 2021-08-28 , DOI: 10.1007/s00203-021-02539-5
Chisato Matsushima 1 , Matthew Shenton 2, 3 , Ayaka Kitahara 1 , Jun Wasaki 4 , Akira Oikawa 1 , Weiguo Cheng 1 , Kazuho Ikeo 5 , Keitaro Tawaraya 1
Affiliation  

Plants release various metabolites from roots and root exudates contribute to differences in stress tolerance among plant species. Plant and soil microbes have complex interactions that are affected by biotic and abiotic factors. The purpose of this study was to examine the differences in metabolites in root exudates of rice (Oryza sativa) cultivars and their correlation with bacterial populations in the rhizosphere. Two rice cultivars (O. sativa cv. Akamai and O. sativa cv. Koshihikari) were grown in soils fertilized with 0 g P kg-1 (- P) or 4.8 g P kg-1 (+ P). Root exudates and root-attached soil were collected at 13 and 20 days after transplanting (DAT) and their metabolites and bacterial community structure were determined. The exudation of proline, serine, threonine, valine and 4-coumarate were increased under low P conditions in both cultivars. There was a positive correlation between the concentration of pantothenate in root exudates and the representation of members of the genera Clostridium and Sporosarcina, which were negatively correlated with root dry weight. Gracilibacter, Opitutus, Pelotomaculum, Phenylobacterium and Oxobacter were positively correlated with root dry weight and presence of allantoin, 2-aminobtyrate and GlcNac. This study provides new information about the response of plants and rhizosphere soil bacteria to low P conditions.

中文翻译:

低磷条件下水稻 (Oryza sativa) 根系分泌物和微生物组的多重分析。

植物从根部释放各种代谢物,根部分泌物导致植物物种之间的胁迫耐受性差异。植物和土壤微生物具有受生物和非生物因素影响的复杂相互作用。本研究的目的是检查水稻 (Oryza sativa) 品种根系分泌物中代谢物的差异及其与根际细菌种群的相关性。两个水稻品种(O. sativa cv. Akamai 和 O. sativa cv. Koshihikari)在施有 0 g P kg-1 (- P) 或 4.8 g P kg-1 (+ P) 的土壤中生长。在移植后 13 天和 20 天收集根系分泌物和根系土壤 (DAT),并测定它们的代谢物和细菌群落结构。脯氨酸、丝氨酸、苏氨酸的渗出,在低磷条件下,两个品种的缬氨酸和 4-香豆酸都增加了。根系分泌物中泛酸的浓度与梭菌属和孢子八叠球菌属成员的代表性呈正相关,与根干重呈负相关。Gracilibacter、Opitutus、Pelotomaculum、Phenylobacterium 和 Oxobacter 与根干重和尿囊素、2-氨基丁酸盐和 GlcNac 的存在呈正相关。这项研究提供了有关植物和根际土壤细菌对低磷条件响应的新信息。Pelotomaculum、Phenylobacterium 和 Oxobacter 与根干重和尿囊素、2-氨基丁酸盐和 GlcNac 的存在呈正相关。这项研究提供了有关植物和根际土壤细菌对低磷条件响应的新信息。Pelotomaculum、Phenylobacterium 和 Oxobacter 与根干重和尿囊素、2-氨基丁酸盐和 GlcNac 的存在呈正相关。这项研究提供了有关植物和根际土壤细菌对低磷条件响应的新信息。
更新日期:2021-08-28
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