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Comparative transcript profiling explores differentially expressed genes associated with sexual phenotype in
Ping Tang1, Qiong Zhang1, Xiaohong Yao1
1Key Laboratory of Plant Germplasm Enhancement and Speciality Agriculture, Wuhan Botanical Garden, the Chinese Academy of Sciences, Wuhan, Hubei, China.
Plos One
|July 4, 2017
Summary
Kiwifruit flower gene expression reveals 2,503 differentially expressed unigenes between sexes. This study provides key insights into the molecular mechanisms of sex determination in kiwifruit (Actinidia chinensis).
Area of Science:
- Plant genomics
- Reproductive biology
- Molecular genetics
Background:
- Kiwifruit (Actinidia chinensis) is a dioecious plant with poorly understood sex determination mechanisms.
- Understanding the genetic basis of sexual dimorphism is crucial for kiwifruit breeding and cultivation.
Purpose of the Study:
- To investigate genome-wide gene expression differences between male and female kiwifruit flowers.
- To identify candidate genes involved in kiwifruit sex determination.
Main Methods:
- High-throughput RNA sequencing (RNA-Seq) was employed to analyze flower transcriptomes.
- Bioinformatic analysis identified differentially expressed unigenes (unique genes).
- Real-time quantitative PCR (qRT-PCR) was used for validation of RNA-Seq results.
Main Results:
- A total of 39,040 unique genes were identified from the kiwifruit flower transcriptome.
- 2,503 unigenes showed differential expression between male and female flowers.
- 1,793 genes were upregulated and 710 were downregulated in female flowers compared to male flowers.
- Expression patterns of 17 out of 19 differentially expressed genes were validated by qRT-PCR.
Conclusions:
- This study generated a valuable EST dataset for kiwifruit flower transcriptomes.
- The findings provide a foundation for future functional genomic studies in Actinidia species.
- This research represents a significant initial step towards elucidating genes controlling sex determination in kiwifruit.
