A Bivariate Mapping Model Identifies Major Covariation QTLs for Biomass Allocation Between Leaf and Stem Growth of Catalpa bungei
Biomass allocation plays a critical role in plant morphological formation and phenotypic plasticity, which greatly impact plant adaptability and competitiveness. While empirical studies on plant biomass allocation have focused on molecular biology and ecology approaches, detailed insight into the ge...
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Frontiers Media S.A.
2021
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oai:doaj.org-article:d91c59c5a26a4f99b7c3e8748514ce392021-11-18T09:53:42ZA Bivariate Mapping Model Identifies Major Covariation QTLs for Biomass Allocation Between Leaf and Stem Growth of Catalpa bungei1664-802110.3389/fgene.2021.758209https://doaj.org/article/d91c59c5a26a4f99b7c3e8748514ce392021-11-01T00:00:00Zhttps://www.frontiersin.org/articles/10.3389/fgene.2021.758209/fullhttps://doaj.org/toc/1664-8021Biomass allocation plays a critical role in plant morphological formation and phenotypic plasticity, which greatly impact plant adaptability and competitiveness. While empirical studies on plant biomass allocation have focused on molecular biology and ecology approaches, detailed insight into the genetic basis of biomass allocation between leaf and stem growth is still lacking. Herein, we constructed a bivariate mapping model to identify covariation QTLs governing carbon (C) allocation between the leaves and stem as well as the covariation of traits within and between organs in a full-sib mapping population of C. bungei. A total of 123 covQTLs were detected for 23 trait pairs, including six leaf traits (leaf length, width, area, perimeter, length/width ratio and petiole length) and five stem traits (height, diameter at breast height, wood density, stemwood volume and stemwood biomass). The candidate genes were further identified in tissue-specific gene expression data, which provided insights into the genetic architecture underlying C allocation for traits or organs. The key QTLs related to growth and biomass allocation, which included UVH1, CLPT2, GAD/SPL, COG1 and MTERF4, were characterised and verified via gene function annotation and expression profiling. The integration of a bivariate Quantitative trait locus mapping model and gene expression profiling will enable the elucidation of genetic architecture underlying biomass allocation and covariation growth, in turn providing a theoretical basis for forest molecular marker-assisted breeding with specific C allocation strategies for adaptation to heterogeneous environments.Miaomiao ZhangNan LuTianqing ZhuGuijuan YangGuanzheng QuChaozhong ShiYue FeiBingyang LiuWenjun MaJunhui WangFrontiers Media S.A.articlebivariate mapping modelbiomass allocationcovariationquantitative trait locusCatalpa bungeiGeneticsQH426-470ENFrontiers in Genetics, Vol 12 (2021) |
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| topic |
bivariate mapping model biomass allocation covariation quantitative trait locus Catalpa bungei Genetics QH426-470 |
| spellingShingle |
bivariate mapping model biomass allocation covariation quantitative trait locus Catalpa bungei Genetics QH426-470 Miaomiao Zhang Nan Lu Tianqing Zhu Guijuan Yang Guanzheng Qu Chaozhong Shi Yue Fei Bingyang Liu Wenjun Ma Junhui Wang A Bivariate Mapping Model Identifies Major Covariation QTLs for Biomass Allocation Between Leaf and Stem Growth of Catalpa bungei |
| description |
Biomass allocation plays a critical role in plant morphological formation and phenotypic plasticity, which greatly impact plant adaptability and competitiveness. While empirical studies on plant biomass allocation have focused on molecular biology and ecology approaches, detailed insight into the genetic basis of biomass allocation between leaf and stem growth is still lacking. Herein, we constructed a bivariate mapping model to identify covariation QTLs governing carbon (C) allocation between the leaves and stem as well as the covariation of traits within and between organs in a full-sib mapping population of C. bungei. A total of 123 covQTLs were detected for 23 trait pairs, including six leaf traits (leaf length, width, area, perimeter, length/width ratio and petiole length) and five stem traits (height, diameter at breast height, wood density, stemwood volume and stemwood biomass). The candidate genes were further identified in tissue-specific gene expression data, which provided insights into the genetic architecture underlying C allocation for traits or organs. The key QTLs related to growth and biomass allocation, which included UVH1, CLPT2, GAD/SPL, COG1 and MTERF4, were characterised and verified via gene function annotation and expression profiling. The integration of a bivariate Quantitative trait locus mapping model and gene expression profiling will enable the elucidation of genetic architecture underlying biomass allocation and covariation growth, in turn providing a theoretical basis for forest molecular marker-assisted breeding with specific C allocation strategies for adaptation to heterogeneous environments. |
| format |
article |
| author |
Miaomiao Zhang Nan Lu Tianqing Zhu Guijuan Yang Guanzheng Qu Chaozhong Shi Yue Fei Bingyang Liu Wenjun Ma Junhui Wang |
| author_facet |
Miaomiao Zhang Nan Lu Tianqing Zhu Guijuan Yang Guanzheng Qu Chaozhong Shi Yue Fei Bingyang Liu Wenjun Ma Junhui Wang |
| author_sort |
Miaomiao Zhang |
| title |
A Bivariate Mapping Model Identifies Major Covariation QTLs for Biomass Allocation Between Leaf and Stem Growth of Catalpa bungei |
| title_short |
A Bivariate Mapping Model Identifies Major Covariation QTLs for Biomass Allocation Between Leaf and Stem Growth of Catalpa bungei |
| title_full |
A Bivariate Mapping Model Identifies Major Covariation QTLs for Biomass Allocation Between Leaf and Stem Growth of Catalpa bungei |
| title_fullStr |
A Bivariate Mapping Model Identifies Major Covariation QTLs for Biomass Allocation Between Leaf and Stem Growth of Catalpa bungei |
| title_full_unstemmed |
A Bivariate Mapping Model Identifies Major Covariation QTLs for Biomass Allocation Between Leaf and Stem Growth of Catalpa bungei |
| title_sort |
bivariate mapping model identifies major covariation qtls for biomass allocation between leaf and stem growth of catalpa bungei |
| publisher |
Frontiers Media S.A. |
| publishDate |
2021 |
| url |
https://doaj.org/article/d91c59c5a26a4f99b7c3e8748514ce39 |
| work_keys_str_mv |
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