Arid
DOI10.3389/fpls.2021.692494
Heterophylly Quantitative Trait Loci Respond to Salt Stress in the Desert Tree Populus euphratica
Fu, Yaru; Li, Feiran; Mu, Shuaicheng; Jiang, Libo; Ye, Meixia; Wu, Rongling
通讯作者Ye, MX (corresponding author), Beijing Forestry Univ, Coll Biol Sci & Technol, Ctr Computat Biol, Beijing, Peoples R China.
来源期刊FRONTIERS IN PLANT SCIENCE
ISSN1664-462X
出版年2021
卷号12
英文摘要Heterophylly, or leaf morphological changes along plant shoot axes, is an important indicator of plant eco-adaptation to heterogeneous microenvironments. Despite extensive studies on the genetic control of leaf shape, the genetic architecture of heterophylly remains elusive. To identify genes related to heterophylly and their associations with plant saline tolerance, we conducted a leaf shape mapping experiment using leaves from a natural population of Populus euphratica. We included 106 genotypes grown under salt stress and salt-free (control) conditions using clonal seedling replicates. We developed a shape tracking method to monitor and analyze the leaf shape using principal component (PC) analysis. PC1 explained 42.18% of the shape variation, indicating that shape variation is mainly determined by the leaf length. Using leaf length along shoot axes as a dynamic trait, we implemented a functional mapping-assisted genome-wide association study (GWAS) for heterophylly. We identified 171 and 134 significant quantitative trait loci (QTLs) in control and stressed plants, respectively, which were annotated as candidate genes for stress resistance, auxin, shape, and disease resistance. Functions of the stress resistance genes ABSCISIC ACIS-INSENSITIVE 5-like (ABI5), WRKY72, and MAPK3 were found to be related to many tolerance responses. The detection of AUXIN RESPONSE FACTOR17-LIKE (ARF17) suggests a balance between auxin-regulated leaf growth and stress resistance within the genome, which led to the development of heterophylly via evolution. Differentially expressed genes between control and stressed plants included several factors with similar functions affecting stress-mediated heterophylly, such as the stress-related genes ABC transporter C family member 2 (ABCC2) and ABC transporter F family member (ABCF), and the stomata-regulating and reactive oxygen species (ROS) signaling gene RESPIRATORY BURST OXIDASE HOMOLOG (RBOH). A comparison of the genetic architecture of control and salt-stressed plants revealed a potential link between heterophylly and saline tolerance in P. euphratica, which will provide new avenues for research on saline resistance-related genetic mechanisms.
英文关键词heterophylly leaf shape salt stress QTL Populus euphratica
类型Article
语种英语
开放获取类型gold, Green Published
收录类别SCI-E
WOS记录号WOS:000679186900001
WOS关键词ABSCISIC-ACID ; RESISTANCE ; TOLERANCE ; FORMAT ; GROWTH
WOS类目Plant Sciences
WOS研究方向Plant Sciences
来源机构北京林业大学
资源类型期刊论文
条目标识符http://119.78.100.177/qdio/handle/2XILL650/363347
作者单位[Fu, Yaru; Li, Feiran; Mu, Shuaicheng; Jiang, Libo; Ye, Meixia; Wu, Rongling] Beijing Forestry Univ, Coll Biol Sci & Technol, Ctr Computat Biol, Beijing, Peoples R China; [Wu, Rongling] Penn State Univ, Dept Publ Hlth Sci, Ctr Stat Genet, Hershey, PA USA; [Wu, Rongling] Penn State Univ, Dept Stat, Ctr Stat Genet, Hershey, PA USA
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GB/T 7714
Fu, Yaru,Li, Feiran,Mu, Shuaicheng,et al. Heterophylly Quantitative Trait Loci Respond to Salt Stress in the Desert Tree Populus euphratica[J]. 北京林业大学,2021,12.
APA Fu, Yaru,Li, Feiran,Mu, Shuaicheng,Jiang, Libo,Ye, Meixia,&Wu, Rongling.(2021).Heterophylly Quantitative Trait Loci Respond to Salt Stress in the Desert Tree Populus euphratica.FRONTIERS IN PLANT SCIENCE,12.
MLA Fu, Yaru,et al."Heterophylly Quantitative Trait Loci Respond to Salt Stress in the Desert Tree Populus euphratica".FRONTIERS IN PLANT SCIENCE 12(2021).
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