Integrative effect of drought and low temperature on litchi (Litchi chinensis Sonn.) floral initiation revealed by dynamic genome-wide transcriptome analysis
| Autor: | Qiusheng Xiao, Houbin Chen, Jiyuan Shen, Chengjie Chen, Haiji Qiu |
|---|---|
| Jazyk: | angličtina |
| Rok vydání: | 2016 |
| Předmět: |
0106 biological sciences
0301 basic medicine Hub genes Locus (genetics) Biology Flowering time 01 natural sciences Genome Article Transcriptome 03 medical and health sciences Combined treatment Litchi Botany Gene Plant Proteins Multidisciplinary Sequence Analysis RNA Gene Expression Profiling fungi food and beverages High-Throughput Nucleotide Sequencing Droughts Gene expression profiling Cold Temperature Plant Leaves 030104 developmental biology RNA Plant Fruit Genome Plant 010606 plant biology & botany Transcription Factors |
| Zdroj: | Scientific Reports |
| ISSN: | 2045-2322 |
| Popis: | Floral induction in litchi is influenced by multiple environment cues including temperature and soil water condition. In the present study, we determined that a combined treatment consisting of 14-day drought imposed prior to exposure to 35-day low temperature (T3) significantly promoted litchi flowering relative to the low temperature alone (T2), suggesting an integrative effect of drought and low temperature on litchi floral initiation. Analysis of transcriptomic changes in leaves from different treatments showed that 2,198 and 4,407 unigenes were differentially expressed in response to drought and low temperature, respectively. 1,227 of these unigenes were expressed in response to both treatments, implying an interaction of drought and low temperature on expression of genes involved in litchi floral initiation. Additionally, 932 unigenes were consistently differentially expressed during floral induction between T2 and T3 plants, which potentially accounts for the difference of flowering time. Thirty-eight transcription factors out of these 932 unigenes were identified as hub genes with central roles in regulation of litchi floral induction. The expression of litchi homologs of well-known flowering genes was also investigated and one Flowering Locus T (FT) homolog may play a crucial role in litchi flowering in responses to drought and low temperature. |
| Databáze: | OpenAIRE |
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