Journal article
Early Drought-Responsive Genes Are Variable and Relevant to Drought Tolerance
G3 (Bethesda, Md.), Vol.10(5), pp.1657-1670
05/04/2020
DOI: 10.1534/g3.120.401199
PMID: 32161086
Abstract
Drought stress is an important crop yield limiting factor worldwide. Plant physiological responses to drought stress are driven by changes in gene expression. While drought-responsive genes (DRGs) have been identified in maize, regulation patterns of gene expression during progressive water deficits remain to be elucidated. In this study, we generated time-series transcriptomic data from the maize inbred line B73 under well-watered and drought conditions. Comparisons between the two conditions identified 8,626 DRGs and the stages (early, middle, and late drought) at which DRGs occurred. Different functional groups of genes were regulated at the three stages. Specifically, early and middle DRGs display higher copy number variation among diverse
lines, and they exhibited stronger associations with drought tolerance as compared to late DRGs. In addition, correlation of expression between small RNAs (sRNAs) and DRGs from the same samples identified 201 negatively sRNA/DRG correlated pairs, including genes showing high levels of association with drought tolerance, such as two glutamine synthetase genes,
and
The characterization of dynamic gene responses to progressive drought stresses indicates important adaptive roles of early and middle DRGs, as well as roles played by sRNAs in gene expression regulation upon drought stress.
Details
- Title: Subtitle
- Early Drought-Responsive Genes Are Variable and Relevant to Drought Tolerance
- Creators
- Cheng He - Department of Plant Pathology, Kansas State University, Manhattan, KS 66506Yicong Du - Hunan Agricultural Technology Extension Station, Changsha, Hunan 410000, ChinaJunjie Fu - Institute of Crop Science, China Academy of Agricultural Science, Beijing 100081, ChinaErliang Zeng - University of Iowa, Division of Biostatistics and Computational Biology, University of Iowa, IA 52242Sunghun Park - Department of Horticulture and Natural Resources, Kansas State University, Manhattan, KS 66506Frank White - Department of Plant Pathology, University of Florida, Gainesville, FL 32611Jun Zheng - Institute of Crop Science, China Academy of Agricultural Science, Beijing 100081, China zhengjun02@caas.cn liu3zhen@ksu.eduSanzhen Liu - Department of Plant Pathology, Kansas State University, Manhattan, KS 66506 zhengjun02@caas.cn liu3zhen@ksu.edu
- Resource Type
- Journal article
- Publication Details
- G3 (Bethesda, Md.), Vol.10(5), pp.1657-1670
- DOI
- 10.1534/g3.120.401199
- PMID
- 32161086
- NLM abbreviation
- G3 (Bethesda)
- ISSN
- 2160-1836
- eISSN
- 2160-1836
- Publisher
- United States
- Language
- English
- Date published
- 05/04/2020
- Academic Unit
- Preventive and Community Dentistry; Roy J. Carver Department of Biomedical Engineering; Iowa Neuroscience Institute; Biostatistics; Dental Research
- Record Identifier
- 9984066106302771
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