IB-CAS  > 中科院植物分子生理学重点实验室
Comparative transcriptome combined with morpho-physiological analyses revealed key factors for differential cadmium accumulation in two contrasting sweet sorghum genotypes
Feng, Juanjuan; Jia, Weitao; Lv, Sulian; Bao, Hexigeduleng1; Miao, Fangfang; Zhang, Xuan; Wang, Jinhui; Li, Jihong2,3; Li, Dongsheng2,3; Zhu, Cheng1; Li, Shizhong2,3; Li, Yinxin
2018
Source PublicationPLANT BIOTECHNOLOGY JOURNAL
ISSN1467-7644
Volume16Issue:2Pages:558-571
AbstractCadmium (Cd) is a widespread soil contaminant threatening human health. As an ideal energy plant, sweet sorghum (Sorghum bicolor (L.) Moench) has great potential in phytoremediation of Cd-polluted soils, although the molecular mechanisms are largely unknown. In this study, key factors responsible for differential Cd accumulation between two contrasting sweet sorghum genotypes (high-Cd accumulation one H18, and low-Cd accumulation one L69) were investigated. H18 exhibited a much higher ability of Cd uptake and translocation than L69. Furthermore, Cd uptake through symplasmic pathway and Cd concentrations in xylem sap were both higher in H18 than those in L69. Root anatomy observation found the endodermal apoplasmic barriers were much stronger in L69, which may restrict the Cd loading into xylem. The molecular mechanisms underlying these morpho-physiological traits were further dissected by comparative transcriptome analysis. Many genes involved in cell wall modification and heavy metal transport were found to be Cd-responsive DEGs and/or DEGs between these two genotypes. KEGG pathway analysis found phenylpropanoid biosynthesis pathway was over-represented, indicating this pathway may play important roles in differential Cd accumulation between two genotypes. Based on these results, a schematic representation of main processes involved in differential Cd uptake and translocation in H18 and L69 is proposed, which suggests that higher Cd accumulation in H18 depends on a multilevel coordination of efficient Cd uptake and transport, including efficient root uptake and xylem loading, less root cell wall binding, and weaker endodermal apoplasmic barriers.
Keywordcadmium cell wall endodermis sweet sorghum transcriptome transporter
Subject AreaBiotechnology & Applied Microbiology ; Plant Sciences
DOI10.1111/pbi.12795
Indexed BySCI
Language英语
WOS KeywordMETAL HYPERACCUMULATION ; PHLOEM-SAP ; XYLEM SAP ; CELL-WALL ; THLASPI-CAERULESCENS ; CHEMICAL-COMPOSITION ; NONPROTEIN THIOLS ; TRANSPORT ; EXPRESSION ; TOLERANCE
WOS IDWOS:000423542700019
PublisherWILEY
SubtypeArticle
Publication PlaceHOBOKEN
EISSN1467-7652
Funding OrganizationNational Key Research and Development Program of China [2017YFD0801105] ; Science and Technology Program for Public Wellbeing [2013GS460202-X]
Corresponding Author Emailyxli@ibcas.ac.cn
OAGreen Published, hybrid
Citation statistics
Cited Times:53[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.ibcas.ac.cn/handle/2S10CLM1/20496
Collection中科院植物分子生理学重点实验室
Affiliation1.Chinese Acad Sci, Inst Bot, Key Lab Plant Mol Physiol, Beijing, Peoples R China
2.China Jiliang Univ, Coll Life Sci, Hangzhou, Zhejiang, Peoples R China
3.Tsinghua Univ, Inst Nucl & New Energy Technol, Beijing, Peoples R China
4.Tsinghua Univ, Beijing Engn Res Ctr Biofuels, Beijing, Peoples R China
Recommended Citation
GB/T 7714
Feng, Juanjuan,Jia, Weitao,Lv, Sulian,et al. Comparative transcriptome combined with morpho-physiological analyses revealed key factors for differential cadmium accumulation in two contrasting sweet sorghum genotypes[J]. PLANT BIOTECHNOLOGY JOURNAL,2018,16(2):558-571.
APA Feng, Juanjuan.,Jia, Weitao.,Lv, Sulian.,Bao, Hexigeduleng.,Miao, Fangfang.,...&Li, Yinxin.(2018).Comparative transcriptome combined with morpho-physiological analyses revealed key factors for differential cadmium accumulation in two contrasting sweet sorghum genotypes.PLANT BIOTECHNOLOGY JOURNAL,16(2),558-571.
MLA Feng, Juanjuan,et al."Comparative transcriptome combined with morpho-physiological analyses revealed key factors for differential cadmium accumulation in two contrasting sweet sorghum genotypes".PLANT BIOTECHNOLOGY JOURNAL 16.2(2018):558-571.
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