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来自粳稻品种的LSCHL4与NAL1等位，可提高籼型超级稻93-11的产量。

LSCHL4 from Japonica Cultivar, which is allelic to NAL1, increases yield of indica super rice 93-11.

作者信息

Zhang Guang-Heng, Li Shu-Yu, Wang Li, Ye Wei-Jun, Zeng Da-Li, Rao Yu-Chun, Peng You-Lin, Hu Jiang, Yang Yao-Long, Xu Jie, Ren De-Yong, Gao Zhen-Yu, Zhu Li, Dong Guo-Jun, Hu Xing-Ming, Yan Mei-Xian, Guo Long-Biao, Li Chuan-You, Qian Qian

机构信息

State Key Laboratory of Rice Biology, China National Rice Research Institute, 359 Tiyuchang Road, Hangzhou 310006, Zhejiang, China.

State Key Laboratory of Plant Genomics, National Center for Plant Gene Research, Institute of Genetics and Developmental Biology, Chinese Academy of Sciences, Beijing 100101, China.

出版信息

Mol Plant. 2014 Aug;7(8):1350-1364. doi: 10.1093/mp/ssu055. Epub 2014 May 2.

DOI:10.1093/mp/ssu055
PMID:24795339
原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC4115278/
Abstract

The basic premise of high yield in rice is to improve leaf photosynthetic efficiency and coordinate the source-sink relationship in rice plants. Quantitative trait loci (QTLs) related to morphological traits and chlorophyll content of rice leaves were detected at the stages of heading to maturity, and a major QTL (qLSCHL4) related to flag leaf shape and chlorophyll content was detected at both stages in recombinant inbred lines constructed using the indica rice cultivar 93-11 and the japonica rice cultivar Nipponbare. Map-based cloning and expression analysis showed that LSCHL4 is allelic to NAL1, a gene previously reported in narrow leaf mutant of rice. Overexpression lines transformed with vector carrying LSCHL4 from Nipponbare and a near-isogenic line of 93-11 (NIL-9311) had significantly increased leaf chlorophyll content, enlarged flag leaf size, and improved panicle type. The average yield of NIL-9311 was 18.70% higher than that of 93-11. These results indicate that LSCHL4 had a pleiotropic function. Exploring and pyramiding more high-yield alleles resembling LSCHL4 for super rice breeding provides an effective way to achieve new breakthroughs in raising rice yield and generate new ideas for solving the problem of global food safety.

摘要

水稻高产的基本前提是提高叶片光合效率并协调水稻植株的源库关系。在抽穗至成熟阶段检测了与水稻叶片形态性状和叶绿素含量相关的数量性状基因座（QTL），在以籼稻品种93-11和粳稻品种日本晴构建的重组自交系的两个阶段均检测到一个与剑叶形状和叶绿素含量相关的主效QTL（qLSCHL4）。基于图谱的克隆和表达分析表明，LSCHL4与NAL1等位，NAL1是先前在水稻窄叶突变体中报道的一个基因。用携带日本晴LSCHL4的载体转化的过表达系和93-11的近等基因系（NIL-9311）的叶片叶绿素含量显著增加，剑叶尺寸增大，穗型改善。NIL-9311的平均产量比93-11高18.70%。这些结果表明LSCHL4具有多效性功能。探索并聚合更多类似LSCHL4的高产等位基因用于超级稻育种，为实现水稻产量新突破提供了有效途径，并为解决全球食品安全问题提供了新思路。

https://cdn.ncbi.nlm.nih.gov/pmc/blobs/03c8/4115278/991cb481c27b/mpphys_ssu055_f0008.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/03c8/4115278/15d3aa7ceec0/mpphys_ssu055_f0001.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/03c8/4115278/47bb3907dcb5/mpphys_ssu055_f0002.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/03c8/4115278/508f962c6ef9/mpphys_ssu055_f0003.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/03c8/4115278/d6135c5cb1ad/mpphys_ssu055_f0004.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/03c8/4115278/160146f4fd12/mpphys_ssu055_f0005.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/03c8/4115278/08db99014f5d/mpphys_ssu055_f0006.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/03c8/4115278/45b7c8a7674f/mpphys_ssu055_f0007.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/03c8/4115278/991cb481c27b/mpphys_ssu055_f0008.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/03c8/4115278/15d3aa7ceec0/mpphys_ssu055_f0001.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/03c8/4115278/47bb3907dcb5/mpphys_ssu055_f0002.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/03c8/4115278/508f962c6ef9/mpphys_ssu055_f0003.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/03c8/4115278/d6135c5cb1ad/mpphys_ssu055_f0004.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/03c8/4115278/160146f4fd12/mpphys_ssu055_f0005.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/03c8/4115278/08db99014f5d/mpphys_ssu055_f0006.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/03c8/4115278/45b7c8a7674f/mpphys_ssu055_f0007.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/03c8/4115278/991cb481c27b/mpphys_ssu055_f0008.jpg

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A natural variant of NAL1, selected in high-yield rice breeding programs, pleiotropically increases photosynthesis rate.
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