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A transcriptomic analysis reveals the adaptability of the growth and physiology of immature tassel to long-term soil water deficit in Zea mays L
- Source :
- Plant Physiology and Biochemistry. 155:756-768
- Publication Year :
- 2020
- Publisher :
- Elsevier BV, 2020.
-
Abstract
- Drought is a key threat to maize growth and yield. Understanding the mechanism of immature tassel (IT) response to long term drought is of paramount importance. Here, the maize inbred line PH6WC was tested under well-watered (CK) and two water deficit treatments (WD1 and WD2). The final IT length in the WD1 and WD2 treatments decreased by nearly 6.2% and 21.2% compared to the CK, respectively, and the average accumulation rate IT dry matter was 1.5-fold and 1.8-fold slower, respectively. Furthermore, RNA sequencing analysis was conducted on the IT sampled at 30 days after the WD treatments. In total, the cellular component in gene ontology (GO) analysis suggested that the differentially expressed genes were significantly enriched in three common terms (apoplast, plant-type cell wall, and anchored component of membrane) among the CK vs WD1, CK vs WD2, and WD1 vs WD2 comparisons. Next, a co-expression network analysis identified 44 modules that contained global expression genes. Finally, by combining the GO analysis with modules, nine genes involved in carbohydrate metabolism and the antioxidant system were screened out, and the six corresponding physiological parameters were all significantly increased under the WD treatments. These results showed that, although the IT length and dry matter decreased, the IT enhanced the adaptation to drought by regulating their own genetic and physiological changes.
- Subjects :
- 0106 biological sciences
0301 basic medicine
Physiology
Tassel
Plant Science
Biology
Carbohydrate metabolism
Zea mays
01 natural sciences
Cell wall
Transcriptome
Soil
03 medical and health sciences
Animal science
Gene Expression Regulation, Plant
Stress, Physiological
Genetics
Dry matter
Inflorescence
Gene
Water
RNA
Apoplast
Droughts
Gene Ontology
030104 developmental biology
010606 plant biology & botany
Subjects
Details
- ISSN :
- 09819428
- Volume :
- 155
- Database :
- OpenAIRE
- Journal :
- Plant Physiology and Biochemistry
- Accession number :
- edsair.doi.dedup.....d85fdd7129bf47d2ac7dc2ee03fe0d54
- Full Text :
- https://doi.org/10.1016/j.plaphy.2020.08.027