globalchange  > 气候变化与战略
DOI: 10.1073/pnas.2005911117
论文题名:
Root angle modifications by the DRO1 homolog improve rice yields in saline paddy fields
作者: Kitomi Y.; Hanzawa E.; Kuya N.; Inoue H.; Hara N.; Kawai S.; Kanno N.; Endo M.; Sugimoto K.; Yamazaki T.; Sakamoto S.; Sentoku N.; Wu J.; Kanno H.; Mitsuda N.; Toriyama K.; Sato T.; Uga Y.
刊名: Proceedings of the National Academy of Sciences of the United States of America
ISSN: 0027-8424
出版年: 2020
卷: 117, 期:35
起始页码: 21242
结束页码: 21250
语种: 英语
英文关键词: Abiotic stress ; Gravitropism ; Oryza sativa L ; Quantitative trait locus (QTL) ; Root trait
Scopus关键词: abiotic stress ; Article ; carboxy terminal sequence ; controlled study ; CRISPR-CAS9 system ; DRO1 gene ; gene expression ; gene frequency ; genetic variability ; genotype ; gravitropism ; limit of quantitation ; loss of function mutation ; molecular cloning ; nonhuman ; paddy soil ; phenotype ; plant gene ; plant root ; priority journal ; qSOR1 ; rice ; root growth angle ; signal transduction ; soil ; soil surface root ; allele ; drought ; genetics ; growth, development and aging ; metabolism ; Oryza ; quantitative trait locus ; Arabidopsis protein ; AT1G72490 protein, Arabidopsis ; indoleacetic acid derivative ; nuclear protein ; Alleles ; Arabidopsis Proteins ; Droughts ; Indoleacetic Acids ; Nuclear Proteins ; Oryza ; Phenotype ; Plant Roots ; Quantitative Trait Loci
英文摘要: The root system architecture (RSA) of crops can affect their production, particularly in abiotic stress conditions, such as with drought, waterlogging, and salinity. Salinity is a growing problem worldwide that negatively impacts on crop productivity, and it is believed that yields could be improved if RSAs that enabled plants to avoid saline conditions were identified. Here, we have demonstrated, through the cloning and characterization of qSOR1 (quantitative trait locus for SOIL SURFACE ROOTING 1), that a shallower root growth angle (RGA) could enhance rice yields in saline paddies. qSOR1 is negatively regulated by auxin, predominantly expressed in root columella cells, and involved in the gravitropic responses of roots. qSOR1 was found to be a homolog of DRO1 (DEEPER ROOTING 1), which is known to control RGA. CRISPR-Cas9 assays revealed that other DRO1 homologs were also involved in RGA. Introgression lines with combinations of gain-of-function and loss-of-function alleles in qSOR1 and DRO1 demonstrated four different RSAs (ultra-shallow, shallow, intermediate, and deep rooting), suggesting that natural alleles of the DRO1 homologs could be utilized to control RSA variations in rice. In saline paddies, near-isogenic lines carrying the qSOR1 loss-of-function allele had soil-surface roots (SOR) that enabled rice to avoid the reducing stresses of saline soils, resulting in increased yields compared to the parental cultivars without SOR. Our findings suggest that DRO1 homologs are valuable targets for RSA breeding and could lead to improved rice production in environments characterized by abiotic stress. © 2020 National Academy of Sciences. All rights reserved.
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/164071
Appears in Collections:气候变化与战略

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作者单位: Kitomi, Y., Institute of Crop Science, National Agriculture and Food Research Organization (NARO), Tsukuba, Ibaraki 305-8518, Japan; Hanzawa, E., Graduate School of Life Sciences, Tohoku University, Sendai, Miyagi 980-8577, Japan; Kuya, N., Institute of Crop Science, National Agriculture and Food Research Organization (NARO), Tsukuba, Ibaraki 305-8518, Japan; Inoue, H., Institute of Agrobiological Sciences, NARO, Tsukuba, Ibaraki 305-8634, Japan, PRESTO, Japan Science and Technology Agency (JST), Kawaguchi, Saitama 332-0012, Japan; Hara, N., Institute of Agrobiological Sciences, NARO, Tsukuba, Ibaraki 305-8634, Japan; Kawai, S., Institute of Crop Science, National Agriculture and Food Research Organization (NARO), Tsukuba, Ibaraki 305-8518, Japan, WDB Co., Ltd., Tsukuba, 305-0032, Japan; Kanno, N., Institute of Crop Science, National Agriculture and Food Research Organization (NARO), Tsukuba, Ibaraki 305-8518, Japan; Endo, M., Institute of Agrobiological Sciences, NARO, Tsukuba, Ibaraki 305-8634, Japan; Sugimoto, K., Institute of Crop Science, National Agriculture and Food Research Organization (NARO), Tsukuba, Ibaraki 305-8518, Japan; Yamazaki, T., Advanced Analysis Center, NARO, Tsukuba, Ibaraki 305-8517, Japan; Sakamoto, S., Bioproduction Research Institute, National Institute of Advanced Industrial Science and Technology (AIST), Tsukuba, Ibaraki 305-8566, Japan; Sentoku, N., Institute of Agrobiological Sciences, NARO, Tsukuba, Ibaraki 305-8634, Japan; Wu, J., Institute of Crop Science, National Agriculture and Food Research Organization (NARO), Tsukuba, Ibaraki 305-8518, Japan; Kanno, H., Graduate School of Agricultural Science, Tohoku University, Sendai, Miyagi 980-8572, Japan; Mitsuda, N., Bioproduction Research Institute, National Institute of Advanced Industrial Science and Technology (AIST), Tsukuba, Ibaraki 305-8566, Japan; Toriyama, K., Graduate School of Agricultural Science, Tohoku University, Sendai, Miyagi 980-8572, Japan; Sato, T., Graduate School of Agricultural Science, Tohoku University, Sendai, Miyagi 980-8572, Japan; Uga, Y., Institute of Crop Science, National Agriculture and Food Research Organization (NARO), Tsukuba, Ibaraki 305-8518, Japan

Recommended Citation:
Kitomi Y.,Hanzawa E.,Kuya N.,et al. Root angle modifications by the DRO1 homolog improve rice yields in saline paddy fields[J]. Proceedings of the National Academy of Sciences of the United States of America,2020-01-01,117(35)
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