Identification of quantitative trait loci and candidate genes associated with ABA sensitivity in common wild rice (Oryza rufipogon Griff.)

CAI Wen-yang; TAN Lu-bin; LIU Feng-xia; SUN Chuan-qing

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Identification of quantitative trait loci and candidate genes associated with ABA sensitivity in common wild rice (Oryza rufipogon Griff.)

机译：普通野生稻（Oryza rufipogon Griff。）中与ABA敏感性相关的数量性状基因座和候选基因的鉴定

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Abscisic acid (ABA),as one of the foremost signaling molecules in plants,is an important hormone which plays versatile functions in regulating developmental process and adaptive stress process.A set of introgression lines were previously generated via a backcrossing program using an elite indica cultivar rice Teqing (O.sativa L.) as recipient and an accession of Yuanjiang common wild rice (O.rufipogon Griff.) as donor.In this study,the previously developed introgression lines were evaluated for ABA sensitivity.Here we reported that a total of 14 quantitative trait loci (QTLs) associated with ABA sensitivity were identified.An ABA sensitive introgression line,YIL53,was identified and characterized.Physiological characterization,including chlorophyll content,malondialdehyde content,soluble sugar content,and stomata movement,demonstrated that YIL53 exhibited the characteristics associated with ABA sensitivity.Genotypic analysis revealed that YIL53 harbored one QTL related to ABA sensitivity,qASS1-2,which was located on chromosome 1 within one introgressed segment derived from the Yuanjiang common wild rice.Furthermore,the qASS1-2 was finally narrowed down to a 441-kb region between simple sequence repeats (SSR) marker RM212 and single nucleotide polymorphism (SNP) marker M3 using the segregation population derived from the cross between Teqing and YIL53,and three candidate genes associated with ABA sensitivity were identified using a strategy combined gene expression analysis with QTL mapping.Identification of the QTLs related to ABA sensitivity and characterization of the ABA sensitive line YIL53 would provide a helpful basis for isolating novel genes related to ABA sensitivity.

机译：脱落酸（ABA）是植物中最重要的信号分子之一，是一种重要的激素，在调节发育过程和适应性胁迫过程中起着多种功能。先前通过使用优良in稻品种的回交程序产生了一套渗入系水稻特青（O.sativa L.）为受主，an江普通野生稻（O.rufipogon Griff。）为供体。在本研究中，对先前开发的基因渗入系进行了ABA敏感性评估。鉴定了14个与ABA敏感性相关的数量性状位点（QTL）。鉴定并鉴定了ABA敏感的基因渗入系YIL53。基因型分析表明，YIL53具有一个与ABA敏感性相关的QTL。 ty，qASS1-2，位于源江普通野生稻的一个基因渗入片段的1号染色体上。此外，qASS1-2最终缩小到简单序列重复序列（SSR）标记RM212和SSR之间的441-kb区域。通过结合基因表达分析和QTL定位策略，鉴定了来自特清和YIL53杂交的分离群体的单核苷酸多态性（SNP）标记M3，以及与ABA敏感性相关的三个候选基因。 ABA敏感系YIL53的鉴定和鉴定为分离与ABA敏感相关的新基因提供了有用的基础。

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《农业科学学报（英文版）》 |2017年第11期|2375-2385|共11页
作者
CAI Wen-yang; TAN Lu-bin; LIU Feng-xia; SUN Chuan-qing;
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作者单位

National Center for Evaluation of Agricultural Wild Plants(Rice)/Beijing Key Laboratory of Crop Genetic Improvement/Department of Plant Genetics and Breeding, China Agricultural University, Beijing 100193, P.R.China;

National Center for Evaluation of Agricultural Wild Plants(Rice)/Beijing Key Laboratory of Crop Genetic Improvement/Department of Plant Genetics and Breeding, China Agricultural University, Beijing 100193, P.R.China;

National Center for Evaluation of Agricultural Wild Plants(Rice)/Beijing Key Laboratory of Crop Genetic Improvement/Department of Plant Genetics and Breeding, China Agricultural University, Beijing 100193, P.R.China;

National Center for Evaluation of Agricultural Wild Plants(Rice)/Beijing Key Laboratory of Crop Genetic Improvement/Department of Plant Genetics and Breeding, China Agricultural University, Beijing 100193, P.R.China;

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收录信息中国科学引文数据库(CSCD);中国科技论文与引文数据库(CSTPCD);
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Identification of quantitative trait loci and candidate genes associated with ABA sensitivity in common wild rice (Oryza rufipogon Griff.)

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