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鉴定大米对深水耐药性的基因组区域,以减少除草剂的使用,有效地控制杂草

Marina Iwasa¹, Koki Chigira¹, Tomohiro Nomura¹

¹Graduate School of Agriculture, Tokyo University of Agriculture and Technology, 3-5-8 Saiwai-cho, Fuchu, Tokyo, 183-8509, Japan.

Rice (New York, N.Y.)

|November 25, 2023

概括

米的深水管理可以改善杂草控制,但可能会阻碍米的生长. 研究人员确定了OsGA20ox1和NAL1的特定基因,这些基因增强了大米的深水抵抗力和地表生物质.

科学领域:

农业科学农业科学
植物遗传学植物遗传学
农业学是一种农业学.

背景情况:

在大米田中的深水管理 (DW) 提供了有效的杂草控制,减少了除草剂的使用.
然而,长时间的深水,特别是移植后的深水,可以抑制大米的生长,需要提高DW抵抗力.

研究的目的:

为了确定在水中改善深水耐受性的遗传变异.
在DW条件下分析与植物长度 (PL) 和工数 (TN) 相关的基因组区域.

主要方法:

全基因组关联研究 (GWAS) 针对165种温带日本大米品种.
对地表生物质 (AGB),植物长度 (PL) 和耕机号 (TN) 的分析.
基因表达分析和候选基因的识别 (OsGA20ox1,NAL1).

主要成果:

在DW管理后的米品种中观察到AGB的显著遗传变异.
GWAS确定了PL (qPL3) 和TN (qTN4) 的主要QTL,分别涉及OsGA20ox1和NAL1.
在qPL3和qTN4处具有替代基因的米品种表现出明显更高的AGB.

结论:

OsGA20ox1和NAL1是提高大米深水抵抗力的关键基因.
这些基因的遗传变异可以在深水条件下改善水生长和生物质.
针对OsGA20ox1和NAL1提供了一个有前途的策略,用于开发改进的米品种,用于DW管理.

关键词:

在深水中具有抗性.在GWAS中,GWAS就是GWAS.在 NAL1 中,NAL1 是 NAL1 .在OSGA20ox1上减少对除草剂的使用.大米大米大米大米大米抑制杂草抑制杂草抑制杂草

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