Resequencing of 297 melon accessions reveals the genomic history of improvement and loci related to fruit traits in melon.
Resequencing of 297 melon accessions reveals the genomic history of improvement and loci related to fruit traits in melon.
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对 297 个甜瓜种质的重新测序揭示了与甜瓜果实性状相关的基因组改良历史和基因座
DOI：
10.1111/pbi.13434
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发表时间：
2020-12
影响因子：
13.8
通讯作者：
Luan F
中科院分区：
文献类型：
--
作者：
Liu S;Gao P;Zhu Q;Zhu Z;Liu H;Wang X;Weng Y;Gao M;Luan F
驯化和改良是作物进化的两个重要阶段。甜瓜（Cucumis梅洛L.）是一种重要的蔬菜作物，在许多园艺性状上具有广泛的表型多样性，特别是果实大小，果肉厚度和香气，这可能是其进化过程中长期广泛选择的结果。然而，在驯化和改进阶段的选择信号，这些显着的变化仍然不清楚。我们对297份野生、地方品种和改良甜瓜种质进行了重新测序，获得了2 045 412个高质量的SNP。群体结构和遗传多样性分析表明，甜瓜的两个亚种：ssp。梅洛和ssp.在甜瓜育种中的应用在ssp的改良阶段，我们检测到233个（~18.35 Mbp）和159个（~17.71 Mbp）新的潜在选择性信号。Agrestis和spp.梅洛，分别。两个醇酰基转移酶基因（CmAATs）独特的甜瓜基因组相比，其他葫芦科作物可能经历了更强的选择在ssp。与其他瓜类相比，Agrestis具有独特的香气。全基因组关联分析确定了8个果实大小和7个果肉厚度信号与选择性扫描重叠。与薄皮SSP相比。agrestis，厚脸皮的ssp.梅洛经历了一个更强的选择厚肉。在大多数甜瓜品种中，CmCLV 3对心皮数和果实形状具有多效性。这项研究的发现为甜瓜作物进化提供了新的见解，并为推进甜瓜育种提供了新的工具。
Summary Domestication and improvement are two important stages in crop evolution. Melon (Cucumis melo L.) is an important vegetable crop with wide phenotypic diversity in many horticultural traits, especially fruit size, flesh thickness and aroma, which are likely the results of long‐term extensive selection during its evolution. However, selective signals in domestication and improvement stages for these remarkable variations remain unclear. We resequenced 297 wild, landrace and improved melon accessions and obtained 2 045 412 high‐quality SNPs. Population structure and genetic diversity analyses revealed independent and two‐step selections in two subspecies of melon: ssp. melo and ssp. agrestis during melon breeding. We detected 233 (~18.35 Mbp) and 159 (~17.71 Mbp) novel potential selective signals during the improvement stage in ssp. agrestis and spp. melo, respectively. Two alcohol acyltransferase genes (CmAATs) unique to the melon genome compared with other cucurbit crops may have undergone stronger selection in ssp. agrestis for the characteristic aroma as compared with other cucurbits. Genome‐wide association analysis identified eight fruit size and seven flesh thickness signals overlapping with selective sweeps. Compared with thin‐skinned ssp. agrestis, thick‐skinned ssp. melo has undergone a stronger selection for thicker flesh. In most melon accessions, CmCLV3 has pleiotropic effects on carpel number and fruit shape. Findings from this study provide novel insights into melon crop evolution, and new tools to advance melon breeding.
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影响因子：
3.7
作者：
Díaz A;Zarouri B;Fergany M;Eduardo I;Alvarez JM;Picó B;Monforte AJ
通讯作者：
Monforte AJ
影响因子：
56.9
作者：
Boualem, Adnane;Fergany, Mohamed;Bendahmane, Abdelhafid
通讯作者：
Bendahmane, Abdelhafid
影响因子：
7
作者：
Chen, Hua;Patterson, Nick;Reich, David
通讯作者：
Reich, David
影响因子：
2
作者：
Dwivedi, N. K.;Dhariwal, O. P.;Bhandari, D. C.
通讯作者：
Bhandari, D. C.
影响因子：
5.1
作者：
El-Sharkawy, I;Manríquez, D;Pech, JC
通讯作者：
Pech, JC