Deciphering the Genetic Basis of Lodging Resistance in Wild Rice Oryza longistaminata
The abuse of fertilizer results in tall rice plants that are susceptible to lodging and reduced plant yield. Hence, it is important to identify and utilize the quantitative trait loci (QTLs)/genes for lodging resistance breeding. Oryza longistaminata exhibits a strong stem and high biomass productiv...
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2020-05-01
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doaj-f5a1340b52164fa988789f6c270853332020-11-25T03:20:14ZengFrontiers Media S.A.Frontiers in Plant Science1664-462X2020-05-011110.3389/fpls.2020.00628540037Deciphering the Genetic Basis of Lodging Resistance in Wild Rice Oryza longistaminataWeixiong LongDong DanZhengqing YuanYunping ChenJie JinWeilong YangZhihong ZhangNengwu LiShaoqing LiThe abuse of fertilizer results in tall rice plants that are susceptible to lodging and reduced plant yield. Hence, it is important to identify and utilize the quantitative trait loci (QTLs)/genes for lodging resistance breeding. Oryza longistaminata exhibits a strong stem and high biomass productivity, which could be a candidate gene pool for cultivars lodging resistance improvement. Here, a set of 152 BC2F20 lines derived from a cross between a cultivated line 93-11 and O. longistaminata was evaluated for lodging resistance. QTL mapping analysis combined with single-nucleotide polymorphism (SNP) marker derived from high-throughput sequencing identified 12 QTLs for stem diameter (SD), 11 QTLs for stem length (SL), and 3 QTLs for breaking strength (BS). Of which, 14 QTLs were first identified from O. longistaminata. A major QTL, qLR1, which was delimited to a region ∼80 kb on chromosome 1, increased stem diameter, stem length, and breaking strength. Another major QTL, qLR8, that was delimited in an interval ∼120 kb on chromosome 8, significantly enhanced the breaking strength. These results provide evidence that O. longistaminata can be exploited to develop lodging-resistant rice lines.https://www.frontiersin.org/article/10.3389/fpls.2020.00628/fulllodging resistanceQTLsOryza longistaminatawild ricestem diameter |
collection |
DOAJ |
language |
English |
format |
Article |
sources |
DOAJ |
author |
Weixiong Long Dong Dan Zhengqing Yuan Yunping Chen Jie Jin Weilong Yang Zhihong Zhang Nengwu Li Shaoqing Li |
spellingShingle |
Weixiong Long Dong Dan Zhengqing Yuan Yunping Chen Jie Jin Weilong Yang Zhihong Zhang Nengwu Li Shaoqing Li Deciphering the Genetic Basis of Lodging Resistance in Wild Rice Oryza longistaminata Frontiers in Plant Science lodging resistance QTLs Oryza longistaminata wild rice stem diameter |
author_facet |
Weixiong Long Dong Dan Zhengqing Yuan Yunping Chen Jie Jin Weilong Yang Zhihong Zhang Nengwu Li Shaoqing Li |
author_sort |
Weixiong Long |
title |
Deciphering the Genetic Basis of Lodging Resistance in Wild Rice Oryza longistaminata |
title_short |
Deciphering the Genetic Basis of Lodging Resistance in Wild Rice Oryza longistaminata |
title_full |
Deciphering the Genetic Basis of Lodging Resistance in Wild Rice Oryza longistaminata |
title_fullStr |
Deciphering the Genetic Basis of Lodging Resistance in Wild Rice Oryza longistaminata |
title_full_unstemmed |
Deciphering the Genetic Basis of Lodging Resistance in Wild Rice Oryza longistaminata |
title_sort |
deciphering the genetic basis of lodging resistance in wild rice oryza longistaminata |
publisher |
Frontiers Media S.A. |
series |
Frontiers in Plant Science |
issn |
1664-462X |
publishDate |
2020-05-01 |
description |
The abuse of fertilizer results in tall rice plants that are susceptible to lodging and reduced plant yield. Hence, it is important to identify and utilize the quantitative trait loci (QTLs)/genes for lodging resistance breeding. Oryza longistaminata exhibits a strong stem and high biomass productivity, which could be a candidate gene pool for cultivars lodging resistance improvement. Here, a set of 152 BC2F20 lines derived from a cross between a cultivated line 93-11 and O. longistaminata was evaluated for lodging resistance. QTL mapping analysis combined with single-nucleotide polymorphism (SNP) marker derived from high-throughput sequencing identified 12 QTLs for stem diameter (SD), 11 QTLs for stem length (SL), and 3 QTLs for breaking strength (BS). Of which, 14 QTLs were first identified from O. longistaminata. A major QTL, qLR1, which was delimited to a region ∼80 kb on chromosome 1, increased stem diameter, stem length, and breaking strength. Another major QTL, qLR8, that was delimited in an interval ∼120 kb on chromosome 8, significantly enhanced the breaking strength. These results provide evidence that O. longistaminata can be exploited to develop lodging-resistant rice lines. |
topic |
lodging resistance QTLs Oryza longistaminata wild rice stem diameter |
url |
https://www.frontiersin.org/article/10.3389/fpls.2020.00628/full |
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