Rare allele of a previously unidentified histone H4 acetyltransferase enhances grain weight, yield, and plant biomass in rice

Song Xian Jun; Kuroha Takeshi; Ayano MadokaFuruta TomoyukiNagai KeisukeKomeda NorioSegami ShuheiMiura KotaroOgawa DaisukeKamura TakumiSuzuki TakamasaHigashiyama TetsuyaYamasaki MasanoriMori HitoshiInukai YoshiakiWu JianzhongKitano HidemiSakakibara HitoshiJacobsen Steven E.Ashikari Motoyuki

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Rare allele of a previously unidentified histone H4 acetyltransferase enhances grain weight, yield, and plant biomass in rice

机译：Rare allele of a previously unidentified histone H4 acetyltransferase enhances grain weight, yield, and plant biomass in rice

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摘要

Grain weight is an important crop yield component; however, its underlying regulatory mechanisms are largely unknown. Here, we identify a grain-weight quantitative trait locus (QTL) encoding a new-type GNAT-like protein that harbors intrinsic histone acetyltransferase activity (OsglHAT1). Our genetic and molecular evidences pinpointed the QTL-OsglHAT1's allelic variations to a 1.2-kb region upstream of the gene body, which is consistent with its function as a positive regulator of the traits. Elevated OsglHAT1 expression enhances grain weight and yield by enlarging spikelet hulls via increasing cell number and accelerating grain filling, and increases global acetylation levels of histone H4. OsglHAT1 localizes to the nucleus, where it likely functions through the regulation of transcription. Despite its positive agronomical effects on grain weight, yield, and plant biomass, the rare allele elevating OsglHAT1 expression has so far escaped human selection. Our findings reveal the first example, to our knowledge, of a QTL for a yield component trait being due to a chromatin modifier that has the potential to improve crop high-yield breeding.

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《Proceedings of the National Academy of Sciences of the United States of America》 |2015年第1期|76-81|共6页
作者
Song Xian Jun; Kuroha Takeshi; Ayano MadokaFuruta TomoyukiNagai KeisukeKomeda NorioSegami ShuheiMiura KotaroOgawa DaisukeKamura TakumiSuzuki TakamasaHigashiyama TetsuyaYamasaki MasanoriMori HitoshiInukai YoshiakiWu JianzhongKitano HidemiSakakibara HitoshiJacobsen Steven E.Ashikari Motoyuki;
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作者单位

Nagoya Univ, Biosci & Biotechnol Ctr, Nagoya, Aichi 4648601, Japan;

Fukui Prefectural Univ, Fac Biotechnol, Fukui 9101195, Japan;

Nagoya Univ, Grad Sch Sci, Nagoya, Aichi 4648601, JapanKobe Univ, Food Resources Educ & Res Ctr, Kasai, Hyogo 6752103, JapanNagoya Univ, Grad Sch Bioagr Sci, Nagoya, Aichi 4648601, JapanRIKEN Ctr Sustainable Resource Sci, Yokohama, Kanagawa 2300045, JapanUniv Calif Los Angeles, Los Angeles, CA 90095 USANatl Inst Agrobiol Sci, Agrogen Res Ctr, Tsukuba, Ibaraki 3058634, Japan;

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收录信息美国《科学引文索引》(SCI);美国《生物学医学文摘》(MEDLINE);美国《化学文摘》(CA);
原文格式 PDF
正文语种英语
中图分类自然科学总论;
关键词
grain size; weight; yield; plant biomass; rice;

Rare allele of a previously unidentified histone H4 acetyltransferase enhances grain weight, yield, and plant biomass in rice

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