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大豆品种涵盖广泛成熟组的 FT 家族基因的自然变异。

Natural variations of FT family genes in soybean varieties covering a wide range of maturity groups.

机构信息

MARA Key Laboratory of Soybean Biology (Beijing), Institute of Crop Science, the Chinese Academy of Agricultural Sciences, 12 Zhongguancun South Street, Beijing, 100081, China.

出版信息

BMC Genomics. 2019 Mar 20;20(1):230. doi: 10.1186/s12864-019-5577-5.

DOI:10.1186/s12864-019-5577-5
PMID:30894121
原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC6425728/
Abstract

BACKGROUND

Flowering time and maturity are among the most important adaptive traits in soybean (Glycine max (L.) Merill). Flowering Locus T (FT) family genes function as key flowering integrators, with flowering-promoting members GmFT2a/GmFT5a and flowering-inhibiting members GmFT4/GmFT1a antagonistically regulating vegetative and reproductive growth. However, to date, the relations between natural variations of FT family genes and the diversity of flowering time and maturity in soybean are not clear. Therefore, we conducted this study to discover natural variations in FT family genes in association with flowering time and maturity.

RESULTS

Ten FT family genes, GmFT1a, GmFT1b, GmFT2a, GmFT2b, GmFT3a, GmFT3b, GmFT4, GmFT5a, GmFT5b and GmFT6, were cloned and sequenced in the 127 varieties evenly covering all 14 known maturity groups (MG0000-MGX). They were diversified at the genome sequence polymorphism level. GmFT3b and GmFT5b might have experienced breeding selection in the process of soybean domestication and breeding. Haplotype analysis showed that a total of 17 haplotypes had correlative relationships with flowering time and maturity among the 10 FT genes, namely, 1a-H3, 1b-H1, 1b-H6, 1b-H7, 2a-H1, 2a-H3, 2a-H4, 2a-H9, 2b-H3, 2b-H4, 2b-H6, 2b-H7, 3b-H4, 5a-H1, 5a-H2, 5a-H4 and 5b-H1. Based on the association analysis, 38 polymorphic sites had a significant association with flowering time at the level of p < 0.01.

CONCLUSIONS

Some natural variations exist within the 10 FT family genes, which might be involved in soybean adaptation to different environments and have an influence on diverse flowering time and maturity. This study will facilitate the understanding of the roles of FTs in flowering and maturity.

摘要

背景

开花时间和成熟度是大豆（Glycine max (L.) Merill）最重要的适应性特征之一。开花时间基因家族（FT）基因作为关键的开花整合因子，具有促进开花的成员 GmFT2a/GmFT5a 和抑制开花的成员 GmFT4/GmFT1a，它们拮抗调节营养生长和生殖生长。然而，迄今为止，FT 家族基因的自然变异与大豆开花时间和成熟度的多样性之间的关系尚不清楚。因此，我们进行了这项研究，以发现与开花时间和成熟度相关的 FT 家族基因的自然变异。

结果

在均匀涵盖所有 14 个已知成熟组（MG0000-MGX）的 127 个品种中，克隆并测序了 10 个 FT 家族基因，GmFT1a、GmFT1b、GmFT2a、GmFT2b、GmFT3a、GmFT3b、GmFT4、GmFT5a、GmFT5b 和 GmFT6。它们在基因组序列多态性水平上多样化。GmFT3b 和 GmFT5b 可能在大豆驯化和育种过程中经历了育种选择。单倍型分析表明，在 10 个 FT 基因中，共有 17 种单倍型与开花时间和成熟度相关，分别为 1a-H3、1b-H1、1b-H6、1b-H7、2a-H1、2a-H3、2a-H4、2a-H9、2b-H3、2b-H4、2b-H6、2b-H7、3b-H4、5a-H1、5a-H2、5a-H4 和 5b-H1。基于关联分析，在 p < 0.01 水平上，有 38 个多态性位点与开花时间显著相关。

结论

在 10 个 FT 家族基因中存在一些自然变异，这些变异可能参与了大豆对不同环境的适应，并对不同的开花时间和成熟度有影响。本研究将有助于理解 FTs 在开花和成熟中的作用。

https://cdn.ncbi.nlm.nih.gov/pmc/blobs/06aa/6425728/e1018b0ea5e4/12864_2019_5577_Fig13_HTML.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/06aa/6425728/f3bb5122f20f/12864_2019_5577_Fig1_HTML.jpg
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https://cdn.ncbi.nlm.nih.gov/pmc/blobs/06aa/6425728/e1018b0ea5e4/12864_2019_5577_Fig13_HTML.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/06aa/6425728/f3bb5122f20f/12864_2019_5577_Fig1_HTML.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/06aa/6425728/f8957b90657e/12864_2019_5577_Fig2_HTML.jpg
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https://cdn.ncbi.nlm.nih.gov/pmc/blobs/06aa/6425728/1f15d065a20b/12864_2019_5577_Fig5_HTML.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/06aa/6425728/77a994ca69e1/12864_2019_5577_Fig6_HTML.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/06aa/6425728/49379228f5ad/12864_2019_5577_Fig7_HTML.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/06aa/6425728/845a570733fa/12864_2019_5577_Fig8_HTML.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/06aa/6425728/21af62cc7e75/12864_2019_5577_Fig9_HTML.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/06aa/6425728/a027feb46c41/12864_2019_5577_Fig10_HTML.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/06aa/6425728/616785ea57aa/12864_2019_5577_Fig11_HTML.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/06aa/6425728/816edc18bd13/12864_2019_5577_Fig12_HTML.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/06aa/6425728/e1018b0ea5e4/12864_2019_5577_Fig13_HTML.jpg

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