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鉴定控制水薯抗炭疽病的数量性状基因座（）。 （注：原文括号内内容缺失，所以译文括号内也保留原样）

Identification of QTLs Controlling Resistance to Anthracnose Disease in Water Yam ().

作者信息

Agre Paterne Angelot, Darkwa Kwabena, Olasanmi Bunmi, Kolade Olufisayo, Mournet Pierre, Bhattacharjee Ranjana, Lopez-Montes Antonio, De Koeyer David, Adebola Patrick, Kumar Lava, Asiedu Robert, Asfaw Asrat

机构信息

International Institute of Tropical Agriculture (IITA), Ibadan 5320, Nigeria.

Savanna Agricultural Research Institute, Tamale P.O. Box TL 52, Ghana.

出版信息

Genes (Basel). 2022 Feb 14;13(2):347. doi: 10.3390/genes13020347.

DOI:10.3390/genes13020347
PMID:35205389
原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC8872494/
Abstract

Anthracnose disease caused by a fungus is the primary cause of yield loss in water yam (), the widely cultivated species of yam. Resistance to yam anthracnose disease (YAD) is a prime target in breeding initiatives to develop durable-resistant cultivars for sustainable management of the disease in water yam cultivation. This study aimed at tagging quantitative trait loci (QTL) for anthracnose disease resistance in a bi-parental mapping population of Parent genotypes and their recombinant progenies were genotyped using the Genotyping by Sequencing (GBS) platform and phenotyped in two crop cycles for two years. A high-density genetic linkage map was built with 3184 polymorphic Single Nucleotide Polymorphism (NSP) markers well distributed across the genome, covering 1460.94 cM total length. On average, 163 SNP markers were mapped per chromosome with 0.58 genetic distances between SNPs. Four QTL regions related to yam anthracnose disease resistance were identified on three chromosomes. The proportion of phenotypic variance explained by these QTLs ranged from 29.54 to 39.40%. The QTL regions identified showed genes that code for known plant defense responses such as GDSL-like Lipase/Acylhydrolase, Protein kinase domain, and F-box protein. The results from the present study provide valuable insight into the genetic architecture of anthracnose resistance in water yam. The candidate markers identified herewith form a relevant resource to apply marker-assisted selection as an alternative to a conventional labor-intensive screening for anthracnose resistance in water yam.

摘要

由一种真菌引起的炭疽病是水山药（山药的广泛种植品种）产量损失的主要原因。对山药炭疽病（YAD）的抗性是育种计划中的主要目标，旨在培育持久抗性品种，以实现水山药种植中该病害的可持续管理。本研究旨在对一个双亲作图群体中的炭疽病抗性数量性状位点（QTL）进行定位。利用简化基因组测序（GBS）平台对亲本基因型及其重组后代进行基因分型，并在两年的两个作物周期中进行表型分析。构建了一个高密度遗传连锁图谱，其中有3184个多态性单核苷酸多态性（SNP）标记均匀分布在基因组中，总长度为1460.94厘摩。平均每条染色体上定位了163个SNP标记，SNP之间的遗传距离为0.58。在三条染色体上鉴定出四个与山药炭疽病抗性相关的QTL区域。这些QTL解释的表型变异比例在29.54%至39.40%之间。所鉴定的QTL区域显示出编码已知植物防御反应的基因，如GDSL样脂肪酶/酰基水解酶、蛋白激酶结构域和F-box蛋白。本研究结果为水山药炭疽病抗性的遗传结构提供了有价值的见解。此处鉴定出的候选标记形成了一种相关资源，可用于应用标记辅助选择，作为水山药炭疽病抗性传统劳动密集型筛选的替代方法。

https://cdn.ncbi.nlm.nih.gov/pmc/blobs/bf6d/8872494/ca486b2a6571/genes-13-00347-g006.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/bf6d/8872494/58d936782ac7/genes-13-00347-g001.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/bf6d/8872494/33555df2c8cf/genes-13-00347-g002.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/bf6d/8872494/fece371427a2/genes-13-00347-g003.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/bf6d/8872494/58dd6ea072c2/genes-13-00347-g004.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/bf6d/8872494/919ce28763e7/genes-13-00347-g005.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/bf6d/8872494/ca486b2a6571/genes-13-00347-g006.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/bf6d/8872494/58d936782ac7/genes-13-00347-g001.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/bf6d/8872494/33555df2c8cf/genes-13-00347-g002.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/bf6d/8872494/fece371427a2/genes-13-00347-g003.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/bf6d/8872494/58dd6ea072c2/genes-13-00347-g004.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/bf6d/8872494/919ce28763e7/genes-13-00347-g005.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/bf6d/8872494/ca486b2a6571/genes-13-00347-g006.jpg

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