Natural Variation and Domestication Selection of ZmPGP1 Affects Plant Architecture and Yield-Related Traits in Maize
Natural Variation and Domestication Selection of ZmPGP1 Affects Plant Architecture and Yield-Related Traits in Maize
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ZmPGP1 的自然变异和驯化选择影响玉米植株结构和产量相关性状
DOI：
10.3390/genes10090664
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发表时间：
2019-09-01
期刊：
影响因子：
3.5
通讯作者：
Xu, Chenwu
中科院分区：
文献类型：
--
作者：
Li, Pengcheng;Wei, Jie;Xu, Chenwu
ZmPGP 1参与生长素的极性运输，已被证明与玉米的株高、叶角、产量性状和根系发育相关。为探讨玉米ZmPGP 1基因的自然变异和驯化选择，对349份玉米自交系、68份地方品种和32份大刍草的ZmPGP 1基因进行了重测序。序列多态性，核苷酸多样性和中性测试表明，ZmPGP 1可能在驯化和改进过程中被选择。标记-性状关联分析在自交系中鉴定出11个与4个株型和5个穗部性状显著相关的变异体。SNP 1473是粒长和穗粒重的最显著变异。T等位基因在大刍草中的频率为40.6%，在玉米驯化和改良过程中分别富集到60.3%和89.1%。这一结果表明，ZmPGP 1可以在玉米的驯化和改良过程中进行选择，并且可以利用显著变异开发功能标记来改良玉米的植株结构和穗部性状。
ZmPGP1, involved in the polar auxin transport, has been shown to be associated with plant height, leaf angle, yield traits, and root development in maize. To explore natural variation and domestication selection of ZmPGP1, we re-sequenced the ZmPGP1 gene in 349 inbred lines, 68 landraces, and 32 teosintes. Sequence polymorphisms, nucleotide diversity, and neutral tests revealed that ZmPGP1 might be selected during domestication and improvement processes. Marker-trait association analysis in inbred lines identified 11 variants significantly associated with 4 plant architecture and 5 ear traits. SNP1473 was the most significant variant for kernel length and ear grain weight. The frequency of an increased allele T was 40.6% in teosintes, and it was enriched to 60.3% and 89.1% during maize domestication and improvement. This result revealed that ZmPGP1 may be selected in the domestication and improvement process, and significant variants could be used to develop functional markers to improve plant architecture and ear traits in maize.