Maize (Zea mays L.) genome size indicated by 180-bp knob abundance is associated with flowering time

Abstract Flowering time is considered one of the most important agronomic traits in maize (Zea mays L.), and previous studies have indicated that this trait is correlated with genome size. We observed a significant difference in genome size between tropical and temperate inbred lines and a moderate...

Descripción completa

Guardado en:

Detalles Bibliográficos
Autores principales:	Yinqiao Jian, Cheng Xu, Zifeng Guo, Shanhong Wang, Yunbi Xu, Cheng Zou
Formato:	article
Lenguaje:	EN
Publicado:	Nature Portfolio 2017
Materias:	Medicine R Science Q
Acceso en línea:	https://doaj.org/article/b96f3ce5cc4b4b01827be567664f086e
Etiquetas:	Agregar Etiqueta Sin Etiquetas, Sea el primero en etiquetar este registro!

id	oai:doaj.org-article:b96f3ce5cc4b4b01827be567664f086e
record_format	dspace
spelling	oai:doaj.org-article:b96f3ce5cc4b4b01827be567664f086e2021-12-02T11:52:32ZMaize (Zea mays L.) genome size indicated by 180-bp knob abundance is associated with flowering time10.1038/s41598-017-06153-82045-2322https://doaj.org/article/b96f3ce5cc4b4b01827be567664f086e2017-07-01T00:00:00Zhttps://doi.org/10.1038/s41598-017-06153-8https://doaj.org/toc/2045-2322Abstract Flowering time is considered one of the most important agronomic traits in maize (Zea mays L.), and previous studies have indicated that this trait is correlated with genome size. We observed a significant difference in genome size between tropical and temperate inbred lines and a moderate positive correlation between genome size and 180-bp knob abundance determined by high-throughput sequencing in maize inbred lines in this study. We assembled the reads that were mapped to 180-bp knob sequences and found that the top ten abundant 180-bp knob sequences are highly variable. Moreover, our results indicate that genome size is associated with the flowering time of both male and female flowers, in both tropical and temperate inbred lines and under both tropical and temperate environments. To identify loci associated with genome size, we performed a genome-wide association study. The analysis identified three genomic regions associated with genome size, of which two were novel while the third one is located close to the known knobs K8L1 and K8L2. Overall, our results indicate that selection for breeding materials with earlier flowering times can be assisted by choosing germplasms with smaller genome sizes and that genome size can be determined based on the abundance of 180-bp knobs.Yinqiao JianCheng XuZifeng GuoShanhong WangYunbi XuCheng ZouNature PortfolioarticleMedicineRScienceQENScientific Reports, Vol 7, Iss 1, Pp 1-9 (2017)
institution	DOAJ
collection	DOAJ
language	EN
topic	Medicine R Science Q
spellingShingle	Medicine R Science Q Yinqiao Jian Cheng Xu Zifeng Guo Shanhong Wang Yunbi Xu Cheng Zou Maize (Zea mays L.) genome size indicated by 180-bp knob abundance is associated with flowering time
description	Abstract Flowering time is considered one of the most important agronomic traits in maize (Zea mays L.), and previous studies have indicated that this trait is correlated with genome size. We observed a significant difference in genome size between tropical and temperate inbred lines and a moderate positive correlation between genome size and 180-bp knob abundance determined by high-throughput sequencing in maize inbred lines in this study. We assembled the reads that were mapped to 180-bp knob sequences and found that the top ten abundant 180-bp knob sequences are highly variable. Moreover, our results indicate that genome size is associated with the flowering time of both male and female flowers, in both tropical and temperate inbred lines and under both tropical and temperate environments. To identify loci associated with genome size, we performed a genome-wide association study. The analysis identified three genomic regions associated with genome size, of which two were novel while the third one is located close to the known knobs K8L1 and K8L2. Overall, our results indicate that selection for breeding materials with earlier flowering times can be assisted by choosing germplasms with smaller genome sizes and that genome size can be determined based on the abundance of 180-bp knobs.
format	article
author	Yinqiao Jian Cheng Xu Zifeng Guo Shanhong Wang Yunbi Xu Cheng Zou
author_facet	Yinqiao Jian Cheng Xu Zifeng Guo Shanhong Wang Yunbi Xu Cheng Zou
author_sort	Yinqiao Jian
title	Maize (Zea mays L.) genome size indicated by 180-bp knob abundance is associated with flowering time
title_short	Maize (Zea mays L.) genome size indicated by 180-bp knob abundance is associated with flowering time
title_full	Maize (Zea mays L.) genome size indicated by 180-bp knob abundance is associated with flowering time
title_fullStr	Maize (Zea mays L.) genome size indicated by 180-bp knob abundance is associated with flowering time
title_full_unstemmed	Maize (Zea mays L.) genome size indicated by 180-bp knob abundance is associated with flowering time
title_sort	maize (zea mays l.) genome size indicated by 180-bp knob abundance is associated with flowering time
publisher	Nature Portfolio
publishDate	2017
url	https://doaj.org/article/b96f3ce5cc4b4b01827be567664f086e
work_keys_str_mv	AT yinqiaojian maizezeamayslgenomesizeindicatedby180bpknobabundanceisassociatedwithfloweringtime AT chengxu maizezeamayslgenomesizeindicatedby180bpknobabundanceisassociatedwithfloweringtime AT zifengguo maizezeamayslgenomesizeindicatedby180bpknobabundanceisassociatedwithfloweringtime AT shanhongwang maizezeamayslgenomesizeindicatedby180bpknobabundanceisassociatedwithfloweringtime AT yunbixu maizezeamayslgenomesizeindicatedby180bpknobabundanceisassociatedwithfloweringtime AT chengzou maizezeamayslgenomesizeindicatedby180bpknobabundanceisassociatedwithfloweringtime
_version_	1718395007396741120

Maize (Zea mays L.) genome size indicated by 180-bp knob abundance is associated with flowering time

Ejemplares similares